TECHNICAL UNIVERSITY OF LIBEREC

Faculty of Mechanical Engineering Hálkova 6, 461 17 Liberec, Czech Republic

RESEARCH

ACTIVITY REPORT 2002

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TECHNICAL UNIVERSITY OF LIBEREC - FACULTY OF MECHANICAL ENGINEERING, Halkova 6, 46117 Liberec 1, Tel.: 048/5353221, Fax.: 048/5353535, http//www.fs.vslib.cz Dean: Assoc. Prof. Petr LOUDA, M.Sc., Ph.D.

Telephone: +42 - 48 � 5353455 E-Mail: petr.louda@vslib.cz

Vice Deans: Assoc. Prof. Miroslav MALÝ, M.Sc., Ph.D. Assoc. Prof. Jaroslav BERAN, M.Sc., Ph.D.

Telephone: +42 - 48 � 5353246 The Mechanical Engineering Faculty represents an individual high educational institution of University type, having 11 departments of engineering science. The basic and applied research is within areas that represent the departments educational activities in accredited study branches. Research activity in the science of Engineering technology aims at: study of thermal fields of moulds and castings, their influence on character and quality of castings, research of structure and features of cast iron, research of resistance welding of coated metal sheets for deep drawing, study of coating metal materials, research of thin layers, development of composite materials, complex assessment of deep drawing ability of metal sheets and plastics manufacturing optimisation, monitoring of cutting process by acoustic emission, research of materials machinability and tool cutting ability. Research activity in the science of Machines and equipment design and applied mechanics aims at: fluid mechanics (turbulence, visualisation LDA, CTA anemometer), residual heat exploitation from waste media, mass and heat transfer, ecology of running features in mobile vehicles, analysis and synthesis of machine mechanisms, technology process of glass forming, optimisation of glass moulds, analysis of vibration and noise of machines, crack mechanics, mechanics of oscillating systems, vibroisolation of systems and controlled dynamic systems etc. Research activity in the science of Manufacturing systems and automated control systems of manufacturing processes aims at: design of manufacturing system and its simulation, the machine tools drives, computer aided methods in engineering and modelling of static and dynamic processes, application on real data from industry. Research is supported by projects under national basics (GAČR, FRV� ČR, M�MT),

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by international projects (ERASMUS, COPERNICUS, PHARE) and international co-operation projects with other institutions. In research, development and project work there are important long-term open agreements and partial thematic agreements with industrial companies.

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KMP - Department of Mechanics and stress analysis Head: Assoc. Prof. Miroslav �ÍR, M.Sc., Ph.D.

Telephone: +42 - 48 - 5354136 E-Mail: miroslav.sir@vslib.cz

Secretariat: Telephone: +42 - 48 -5354104 E-Mail: marie.safarikova@vslib.cz Fax: +42 - 48 - 5354160

• �klíba J., Svoboda R.: Mathematical Model of Hydraulic Damper with

Active Control of Resulting Force, Institut for Problems on Mechanical Engineering of the Russian Academy of Sciencies, XXX., Sommerschool.Advanced Problems in Mechanics, Russia, 2002.

Subject of the model is a controlled damper eqippedwith a force sensor.Difference between measured and prescribed force history is indicated and used for the damper control in dynamical state.

• Votrubec R.,�klíba J.: Global charakteristics of Mechanical Systems XXX., Sommerschool.Advanced Problems in Mechanics, Russia, 2002.

Elements of vibro-isolating systems, such as springs and damper show, when implemented, additional secondary properties dependent on stroke velocity and acceleration respectively. These global characteristics were defined as functions of two independent variables.

• Marvalová B., Tran Huu Nam: Identification of Material Parametrs and Deformation Analysisof an Inflated Cylindrical Membrane of Composite with Rubber Matrix Reinforced by Textile Cords, Proceding of 9th International Conference Strutex 2002, Technical university of Liberec, Czech republic, 2002, ISBN 80-7083-668-7.

Experimental identification of the coefficients of strain energy function of the hyperelasic orthotropic material of the thin cylindrical air-spring. The components of the deformation are determined from measured displasements of the grid points drawn on the cylindrical surface of the spring.

• �klíba J.: Theoretical and Experimental Research of Driver Seat Dynamical System, In�enýrská mechanika 2002, VUT Brno, FSI, Czech republic, 2002, ISBN 80-214-2109-6. Collection of research results: 2D and 3D mathematical model. Principal and side resonances.Semi-active and active control systém. Implementation of a controlled damper.Rheological model of a foam.

• �klíba J., Svoboda R.: Mathematics Model of Hydraulics Damper with Active Control of Total Force, In�enýrská mechanika 2002, VUT Brno, FSI, Czech Republic, 2002, ISBN 80-214-2109-6. Damper with active control is modeled and influence of time constatnts of regulation circuit during on and off phases of regulation is analysed.

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• Cirkl D., �klíba J.: Thesis on Polyuretan Foam Simulation Model, In�enýrská mechanika 2002, VUT Brno, FSI, Czech Republic, 2002, ISBN 80-214-2109-6. Rheological PU foam model is presented as a hyperelastic material. For simulation of working charakteristik method of neural network was succesfully used.

• Svoboda R., �klíba J.: Transport delay Simulation in Controlled Hydraulic Damper, Výpočtová mechanika 2002, Katedra mechaniky FAV, západočeská univerzita v Plzeni, Plzeň, Česká republika, 2002, ISBN 80-7082-903-6. Controlled hydraulic damper is modeled and influence of transport delay of regulation circuit is simulated. Theoretical and real course of damping force is compared.

• �klíba J., Matějec R., Votrubec R., Zůbek T.: Possibilities of Identification of Magnetorheological Damper Global Charakteristik, Interakce a zpětné vazby 2002, Ústav termomechaniky AV Ř, Praha, Czech Republic, 2002, ISBN 80-85918-75-7. Developed method of global characteristic identification was applied even with controlled damper with magnetorheological fluid.

• Marvalová B., Urban R.: Experimental Analysis of Deformation and Stress of Nonlinear Orthotropic Hyperelastic Membrane, Experimentální analýzy napětí 2002, ČVUT Praha, Faculty of Mechanical Engineering, Czech Republic, 2002, ISBN 80-01-02547-0. Paper presents an experimental method of determination of cylindrical sheet of a cylindrical air-spring and the identification of its nonlinear orthotropic hyperelastic material.

• Marvalová B., Prokop J.: Off Axis Loading of Convoluted Air Súprings with Two Bellows, In�enýrská mechanika 2002, VUT Brno, FSI, Czech Republic, 2002. Experimental exploration of axis and off axis quasistatic loading.

• Prokop J., Marvalová B.: Side Force Effects in Off-axis Loading of Convoluted Air Spring with Two Bellows, Aplikovaná mechanika 2002, V�B - Techical University of Ostrava, Czech Republic, 2002, ISBN 80-248-0079-9. Experimental exploration of load, pressure and geometrical characteristics of convoluted air springs with two bellows which are used as vibrate isolation in cars.

• Urban R., Marvalová B.: Identifikation of Mechanical Properties of Cylindrical Air-spring Sheet and Modeling its Deformation using FEM, V�B - Techical University of Ostrava, Czech Republic, 2002, ISBN 80-248-0079-9. In paper is presentid an attempt to identify experimentally the coefficients of strain energy function of the hyperelastic orthotropic material of the thin cylindrical air-spring.

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• Loudová J., Mevald J., Zůbek T.: Estimation of Force Efects of Spring and Damping Elements of a Seat Mechanism, In�enýrská mechanika 2002, VUT Brno, FSI, Czech Republic, 2002, ISBN 80-214-2109-6. Work publish methods and results of air springs, dampings and silentblocks, which are used in mathematical models of paralelogram type seat mechanism.

• Loudová J., Mevald J.: Modal Analysis of Vibration Stant with Six Degrees of Freedom, 18.mezinárodní vědecká konference kateder částí a mechanizmů strojů 2002, DF TU of Zvolen, Czech Republic, 2002, ISBN 80-228-1174-2. Solving of the nature frekqencis and shapes of the vibration stant described by the construction design.

• Vrzala R., Petríková I.: Transmission of Motion through Frontal Faces of Parallel Axis Friction Disks, Vědecká pojednání. Jubilejní sborník VIII/2002, Akademické koordinační středisko Euroregionu Nisa, Liberec - Zittau - Jelenia Góra, Czech Republic, SRN, Poland, 2002, ISBN 80-7083-628-8. In some technological processes transmission of motion by sliding friction between parallel axis disks is used while these bodies are contact with their frontal faces.

• Pytlík R., Medůna O.: Virtual Prototype of Mobile Robot Classis, Aplikovaná mechanika 2002, V�B - Techical University of Ostrava, Czech Republic, 2002, ISBN 80-248-0079-9. Summary of research results obtained while solving grant project Virtual Prototype of Golfing Robot awarded by the University Development Fund in 2001.

• �ír M.: Upgrade of High-end Computational Laboratory for Applications in Engineering Mechanics.(Summary Report of a Grant Project), research report, TU of OF Liberec, Czech Republic, 2002. Description and documentation of works made in the laboratory while solving grant project of the University Development Fund. New Fuel workstations have been installed and Octane workstations have been upgraded.

• Jágrová J., Hru� T., Cirkl D., Petríková I.: Internet and Teaching Subjects of Mechanics. Unified Base of Texts and Examples, research report, TU of Liberec, Czech Republic, 2002. Development of an unified base for Internet publication of texts and examples. Publication of over fifty solved examples in Mechanics and Elasticity.

• Petríková I.: Dynamic Analysis of Needle Weaving Machine Beat-up Mechanism, research report, TU of Liberec, Czech Republic, 2002. This is drawn up polynomial lifting dependence substituting original dependence considering development of acceleration especially.

• Mevald J., Loudová J.: To the Problems of Driver Seat Vibroizolation Systems Simulations, research report, TU of Liberec, Czech Republic, 2002. In the work are published few approaches to vibroizolation systems simulation. As an Example is the method shown on the paralelogram type drivers seat simulation.

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• Loudová J., Mevald J.: Solving Nature Freqencies and Nature Shapes of the Construktion Design of a Vibrational Stant with Six Degrees of Freedom, research report, TU of Liberec, Czech Republic, 2002. Computer based modal analysis of vibrational stant design using the I-DEAS system.

• Cirkl D.: Possibility of Application of Neural Networks in Mechanics Features of Polyuretan Foam Modelling, Project of Vakuum Chamber, research report, TU of Liberec, Czech Republic, 2002. First part of the reports deals with application of neural networks in mechanics features of polyuretan foam specimen modelling. Second part describes vacuum chamber development for polyuretan foam measurements in vacuum.

• Prokop J., Marvalová B.: Experimental Determination Characteristics of Double-convoluted Air Spring, research report, TU of Liberec, Czech Republic, 2002. Experimental exploration of load and geometrical characteristics of double-convoluted air spring which are used as vibrate isolation systems in cars.

• Prokop J.: Experimental Determination Characteristics of Convoluted Air Spring, research report, TU of Liberec, Czech Republic, 2002. Measurement of convoluted air spring and evaluation characteristics of convoluted air spring.

• �klíba J., Prokop J.: Kinematics and Dynamics Analysis of Ambulance Couch, research report, TU of Liberec, Czech Republic, 2002. Vibration analysis of the ambulance couch suspended on the four air springs and dampers with three-directional kinematics excitation.

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KSP - Department of Engineering metallurgy Head: Prof. Petr LENFELD, M.Sc., Ph.D.

Telephone: +42 - 48 - 5353340 E-Mail: petr.lenfeld@vslib.cz

Secretariat: Telephone: +42 - 48 - 5353341 E-Mail: hana.ryskova@vslib.cz Fax: +42 - 48 - 5353141

• Exner J.: Methods of extrafurnace treatment of molten cast iron, Kurz pro

taviče litin � Brno 2002, Česká slévárenská společnost Brno, Czech Republic, 2002. Methods of extrafurnace treatment of molten cast iron are the most modern matallurgical operations, which make possible to produce very economically thin-wall iron castings and new types of iron sorts with controlled structure and properties, as well.

• Jelínek M., Exner J.: Oxygen activity measuring of molten cast iron in casting production, 46. Giessereifachtagung 2002, Leoben, Verein Österreichischen Giessereifachleute Wien, Austria, 2002. The oxygen activities for occurrence of spheroidal graphite, compacted graphite or both of them together have been defined. The relation between oxygen activity, melt temperature and chemical composition, together with known oxygen activity for formation of spheroidal and compacted graphite can be for graphite type prediction in industrial conditions.

• Nová I.: Simulation copmputations of castings solidification and cooling as an efficient tool of produstion of high quality castings, slévárenství, Praha, 2002, ISSN 0037-6825. The paper brings partial information on possibilities of simulation computations of castings in sand moulds, which have been elaborated the tu in liberec, refer to measuring and simulation of solidification and cooling of simple geometry castings (board, cylinders) using particular material (of castings and moulds) and give instructions how to ensure necessary thermal-physical characteristics of used materials.

• Nová I.: Solution of the processes of solidification and cooling of the castings in sand moulds by means of simulation calculations, Solididification of metals and alloys, Polish academy of sciences depertment, Polsko, 2002, PL ISSN 1642 - 5308. The article deals with study of thermal processes in the casting � sand mould system. The current measuring equipment developed at the depertment of metallurgy was applied for measuring of the thermal conditions in the system iron casting / sand mould. Experimentally measured temperatures in sand mould ( 250 x 250 x 260 mm) and in the thermal axis of the iron casting ( Æ 40 x 200 mm) were compared with temperature field parallel simulated by professional assembled software. At the identical were compared with temperature field parallel simulated by professional assembled software.

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• Nová I., Harazin M.: The evalution of the coating for cast iron moulds, Akademické koordinační středisko euroregionu Nisa, Czech Republic, 2002, ISBN 80-7083-628-8. Příspěvek se zabývá ře�ěním hodnocení vlivu nátěru litinové kokily na součinitel prostupu tepla v systemu odlitek � mezera � forma. Experimentální naměření hodnot a simulační výpočet byl proveden s vlivem součinitele přechodového odporu pro odlitek tvaru desky tlo�ťky 20 mm, z AlSi9Cu3, litinová kokila s definovanou vrstvou nátěru cillolin Al 258 G.

• Nová I.: Follow of the heat proportion in the cast � feeding head system, PRO-TECH-MA, Acta mechanica slovaca, Ko�ice, Slovakia, 2002, ISBN 1335-2393. The article with study of insulation and exotermic materials feeding for feeding heads. The current measuring equipment developed the was applied for measuring of the thermal conditions in the system of aluminium casting -feed head. Experimentally measured solidification periods of metal in casting and feeding head were parallel simulated by professionaly assembled software SIMTEC.

• Nová I.: Programs of simulation for solidification and cooling of the castings, Slévárenská ročenka, Česká slévárenská společnost, Brno, Czech Republic, 2002, ISSN 0231-7087; ISNB 80-238-7653-8. This article demonstrates the development of simulatiing calculation programs. The world are well known simulation calculation programes: MAGMASOFT, SIMTEC, POCAST, NOVACAST. Simulation calculation programs of the solidification and solidification and cooling are in incessant development.

• Nová I.: Solution of the processes of solidification and cooling of the castings in sand mould by means of simulation calculations, SPOLUPRÁCE 2002, TU of Ostrava, Ostrava, Czech Republic, 2002, ISBN 80-248-0088-8. The article summaries information about heat actions between casting and sand mould. It deals with an measuring of temperature field in the casting � sand mould and with simulation of temperatures in sand mould ( 250 x 250 x 260 mm � cylinder casting Æ 40 x 200 mm from cast iron) by meams of software SIMTEC.

• Neumann H.: Dissimilar welded joints between graphitic cast iron and cr ferritic steel, XXV. Dny svařovací techniky, Dům techniky, Pardubice, Czech Republic, 2002, ISBN 80-02-01491-X. Contribution evaluates structure and properties of dissimilar welded joint between cast iron and Cr ferritic steel.

• Neumann H.: Dissimilar welded joints between graphitic cast iron and cr ferritic steel � work experience, XXX. jubilejna celo�tátna konferencia a diskusné fórum �ZVÁRANIE 2002 - Progresívna výroba zvarkov, Bratislava, Slovakia, 2002. Contribution deals with structure description and properties of welded joints between cast iron motor venting and body of catalyst.

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• Neumann H.: Dissimilar welded joints between graphitic cast iron and cr ferritic steel, Dělení, spojování, svařování materiálů., IMAGE INTERIER, s.r.o., Praha, Czech Republic, 2002. Contribution deals with structure description and properties of welded joints between cast iron motor venting and body of catalyst.

• Neumann H.: Kvalita svarových spojů u nádoby fritézy f2l, Techical University of Liberec, Liberec,Czech Republic, 2002. Technická zpráva se zabývá hodnocením kvality bodových odporových svarů nádoby fritézy.

• Neumann H.: Weld joints quality of the frit cooker f2l, Techical University of Liberec, Liberec, Czech Republic, 2002. This technical report deals with quality evaluation of the resistance welded joints of the frit cookers.

• Neumann H.: Welded joints quality of heat shelter, Techical University of Liberec, Liberec, Czech Republic, 2002. This report evaluates welded joints quality of heat shelter.

• Neumann, H.: Weldability verification of iron aluminides, Techical University of Liberec, Liberec, Czech Republic, 2002. This Technical Report deals with the Weldability of Iron Aluminides Fe3Al by using GTA welding process.

• Neumann H.: Aplication of advanced materials and welding technologies in slovak energy industry. (name of the project), slovakia, 2002. Expert�s evaluation of the project for the GA of Slovak republic.

• Lenfeld P.: Increasing of the Plastic Parts Quality by Means of the Temperature Fields Measuring and Simulation, 7th International Conference on Technology of Plasticity, Yokohama, Japonsko, říjen-listopad 2002, s. 1759 � 1764, JSTP Japan, Yokohama, Japonsko, 2002. During injection of the thermoplastics is final injection moulding quality dependent on not only the filling process of the mould cavity but also the velocity and the cooling progress. The cooling process has already begun in time of the injection and followed within the holding pressure till the time of release. Final properties of the injection moulding are affected by used the thermoplastic but also by the design and the mould construction. The last mentioned creates the temperature and the stress fields caused by flowing of the thermoplastic melt and the solidification.

• Lenfeld P.: Injection moulding and measuring of temperature fields, Acta Mechanika Slovaca, TU of Ko�ice, Slovakia, 2002, ISSN 1335-2393. During injection of the thermoplastics is final injection moulding quality dependent on not only the filling process of the mould cavity but also the velocity and the cooling progress. The cooling process has already begun in time of the injection and followed within the holding pressure till the time of release. In the whole cooling process became considerable local processing condition changes of plastics, i. g. pressure, specific volume and temperature. Progress of processing quantities differs from position of the moulding and they are influenced upon its shape, thickness, injection pressure, volume velocity, stress and temperature fields, etc. Understanding to

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temperature fields enable to detect possible defects of the injection moulding. It means changes of their properties, structure and moulding�s dimension.

• Hisem P.: After shrinkage of injection molded parts of thermoplastics, Acta Mechanika Slovaca, TU of Ko�ice, Slovakia, 2002, ISSN 1335-2394. In the present paper is analysed effect of the injection moulding conditions on the moulding shrinkage and after-shrinkage of the thermoplastics. For materials ABS and PP is on test solids analysed effect of wall thickness, packing pressure, melt temperature and mould temperature on the shrinkage, when after-shrinkage is determined after annealing. Annealing time and temperature were approximately corresponding with process of temperature during the painting of injection moulded parts.

• Kolnerová M., Solfronk P.: Evaluation of tribological properties of aluminium sheets metal used in car industry, Mezinárodní konference �PRO � TECH- MA ´02� ,KO�ICE 2002, Acta Mechanica Slovaca, TU of Ko�ice, Slovakia, 2002, ISSN 1335-2393. Coachwork such as the heaviest segment of car is exposed to pressure for reduction of its mass. Effort for coachwork mass reduction result in substitution of commonly used materials i.e. low � carbon steel with new materials e.g. aluminium alloys. Applications of aluminium sheet alloys bring some complications, which are combined with processing technology and their production costs.Experiments were carried out on the tools and by the methodical approach developed at the Department of metal forming and plastics at the Technical University of Liberec. The experiment consists of strip drawing and evaluation of its influence upon substrate, surface tribology and die velocity. Results are presented by means of charts.

• Solfronk P., Kolnerová M.: Utilization of the PAM-STAMP software by finding of limit states during tube bending, Mezinárodní konference �PRO � TECH- MA ´02� ,KO�ICE 2003, Acta Mechanica Slovaca, TU of Ko�ice, Slovakia, 2002, ISSN 1335-2394. In the latest years numerical simulation of technological processes became essential means in preparation of serial production. Advantage is particularly in design of stamping tools and their possible modification in environment of virtual prototypes.

• Kolnerová M., Solfronk P.: Tool temperature effects for the evaluation of tribological properties of metal sheets used for stamping, 6.mezinárodní konference �Nové smery vo výrobnom in�inierstve 2002�, TU of Ko�ice, Pre�ov, Slovakia, 2002, ISBN 80-70099-828-8. During evaluation of tribological conditions of metal sheet formability the complex results of experiments in system: machine - tool � material � lubricant � technology are considered. One of the parameters, which affect the process of stamping is the increase of tool temperature during the sheet stamping. Change of tool temperature substantially increases the coefficient of friction, as well as the properties of lubricants. In the article are presented results of experiments based on drawing of a metal strip through a heated clamping jaw of a device developed at the Department of Metal Forming and Plastics of the Technical University in Liberec.

• Solfronk P., Kolnerová M.: Effect of design model on acccuracy of the simulation of forming limit state by forming of aluminium alloys, TU of Ko�ice, Pre�ov, Slovakia, 2002, ISBN 80-70099-828-8.

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Numerical simulation of the technological processes became essential aid in the preparation of mass production. The possibility to optimize the design of pressing tool and to carry out eventual changes in medium of virtual prototype are especially an advantage . Simulation of the forming process is important by implementation of new materials into the manufacturing.Two design models of programm PAM-STAMP for determination of limit strain by forming of alumium alloys used in motor car industry. are compared in the article. Results of numerical simulation are confronted with the values of forming limit state measured experimentally.

• Běhálek L., Lenfeld P.: Cooling system with highly heat � conductive materials, 9. Mezinárodní konference vstřikování plastů, PLAST FORM SERVICE s.r.o., Praha, Czech Republic, 2002, ISSN 1213-2632. Subscription deals about possibility uniform increasing of enlistment heat out of cavity of injection tool during cooling by means of highly heat-conductive material. This subscription handles disintegration of temperature fields in injection tool during concrete injection and presents to next advantages at using as follows cooling.

• Běhálek L., Lenfeld P.: Cooling system with highly heat � conductive materials, Plasty a kaučuk, POLENG Zlín, Czech Republic, 2002, ISSN 0322-7340. Presented paper deals with possibility of uniform increasing of heat transfer from injection cavity during cooling period by means of highly heat-conductive materials. It also solves lay out of temperature fields at actual injection conditions and point to further advantages resulting from utilization of this new cooling system.

• Kolnerová M., Solfronk P.: Comparison of tribological properties of aluminium and steel sheets used in carcassing of coachwork, 6.mezinárodní konference � FORM 2002�, VUT BRNO, Brno, Czech Republic, 2002, ISBN 80-214-2162-2. Coachwork such as the heaviest segment of car is exposed to pressure for reduction of its mass. Effort for coachwork mass reduction result in substitution of commonly used materials i.e. low � carbon steel with new materials e.g. aluminium alloys. Applications of aluminium sheet alloys bring some complications, which are combined with processing technology and their production costs. Experiments were carried out on the tools and by the methodical approach developed at the Department of metal forming and plastics at the Technical University of Liberec. The experiment consists of strip drawing and evaluation of its influence upon substrate, surface tribology and die velocity. Results are presented by means of charts.

• Solfronk P., Kolnerová M.: Simulation of forming limit state by means of PAM-STAMP software during tube bending, 6.mezinárodní konference � FORM 2002�, VUT BRNO, Brno, Czech Republic, 2002, ISBN 80-214-2162-2. In the latest years numerical simulation of technological processes became essential means in preparation of serial production. Advantage is particularly in design of stamping tools and their possible modification in environment of virtual prototypes.Presented paper introduces identification of limit states during tube bending, which is one of many eventualities that can be utilized in PAM-STAMP software. Results of numerical simulation are compared with experimental measured values of limit states. For simulation and experimental measurement were chosen two different materials i.e. stainless and steel.

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• Kolnerová M., Solfronk P.: Simulation of springing � back of stamping from the high firm sheet by means of software PAM � STAMP, Mezinárodní vědecká konference � FORMING 2002�, TU of Ostrava, Ostrava, Czech Republic, 2002, ISBN 83-910722-6-6. Numerical simulation of the technological processes became a necessary aid by preparing of serial production during the last years. Its advantage consist in the possibility to optimize the design of the stamping tool and to modify it eventually in the medium of virtual prototype. One of the main problems of the stamping technology, which is actual as in the research so in the serial production, namely the springing � back of stamping after flat forming, is discussed in this article. Simulation for an elected part of motor car from two chosen materials was done and consecutively were measured values of springing � back of real stampings.

• Solfronk P., Kolnerová M.: Simulation of forming limit state by means of PAM-STAMP software during tube bending, Mezinárodní vědecká konference � FORMING 2002�, TU of Ostrava, Ostrava, Czech Republic, 2002, ISBN 83-910722-6-6. In the latest years numerical simulation of technological processes became essential means in preparation of serial production. Advantage is particularly in design of stamping tools and their possible modification in environment of virtual prototypes.Presented paper introduces identification of limit states during tube bending, which is one of many eventualities that can be utilized in PAM-STAMP software. Results of numerical simulation are compared with experimental measured values of limit states. For simulation and experimental measurement were chosen two different materials i.e. stainless and steel.

• Lenfeld P., �olcová P.: Annual report of department of engineering technology � department of metal forming and plastics, research report, TU of Liberec, Czech Republic, 2002.

• Lenfeld P.: Annual report of progressing project FRVS 1488 � modernization of plastic materials testing laboratory, research report, TU of Liberec, Czech Republic, 2002.

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KMT - Department of Material science Head: Assoc. Prof. Petr �PATENKA, M.Sc., Ph.D.

Telephone: +42 - 48 - 5353665 E-Mail: petr.spatenka@vslib.cz

Secretariat: Telephone: +42 - 48 -5353115 Fax: +42 - 48 - 5353342

• Hanus P., Klepsa P., �edivá I.: Properties and application posibilities of

intermetallics on basis FeAl, Fe3Al, Vědecká pojednání VIII-1, Techical University of Liberec, Czech Republic, 2002, ISBN 80-7083-628-8. Intermetallics create special group of materials. They are solid solutions or compounds, from the structural viewpoint, at which are single atoms below partricular temeperatur Tc long-distance-ordered . Their existence is mostly conected with narrow range of concentration at regions with simple stochiometric composition. Properties and structure of materials FeAl and Fe3Al. Effect of alloying elements and influencing of properties in connection with brittleness at hot working. Possible applications of these materçial in technical practice.

• Hotař A., Kirsch R., Kratochvíl P.: Application possibilities of iron aluminides Fe28Al4Cr0,02Ce at glass industry, Sklář a keramik, Česká sklářská společnost, Teplice, Czech Republic, 2002, ISSN 0037-637X. The article is dealing with corrosion behavior of iron aluminides on basis Fe3Al in glass melts.

• Hotař A.: The possibility to use iron aluminide Fe28Al4Cr0.1Ce in glass industry, International Conference Junior Euromat, 2002 Lausanne, The Federation of European Materials Societies, Lausanne, �vícarsko, 2002. Fe3Al - based iron aluminides are structural materials characterised by low material cost, low density, and excellent oxidation and sulfidation resistance. Corrosion resistance properties of iron aluminides may enable their use as structural elements in glass making. Already in 1950´s the Fe40Al1C alloy (FeAl type) was tested in Czech Republic for corrosion resistance in molten glass. Results of corrosion resistance were very good, but low room-temperature ductility, bad machinability and big content of carbon stopped further tests. However, recently these disadvantages were improved using other types of iron aluminides (Fe3Al) with low carbon content and suitable alloying (cerium, chromium). Proper hot rolling and thermal treatment is also necessary. Good oxidation and sulfidation resistance opened new possibilities to use this material in glass industry for example as elements for homogenisation of molten glass, elements of recuperators and parts of heat elements. First experiments were carried out concerning the interaction of Fe28Al4Cr0,1Ce alloy with molten glass using static and dynamic corrosion tests in soda-potash glass and in lead crystal (24%PbO). The behaviour was compared with austenitic and ferritic steel.

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• Klepsa F., Rothe R.: Weldabbility of intermetallic compounds Fe3Al, Verlag für Schweissen und verwandte Verfahren DVS-Verlag, Düsseldorf, Germany, 2002, ISSN 0036-7184. Two modfications of intermetallic phase beta1 tof type Fe3Al was laser welded by CO2 laser beam with circular cross section area without an addition and tested for weldability. The trasversional speed was bselected between 1 and 3 m/min , power of laser beam was 2 340 W.

• Kolouch A., �patenka P.: Atmospheric pressure discharges for surface treatment of materials - state of art, Vědecká pojednání VIII-1, Techical University of Liberec, Liberec, Czech Republic, 2002, ISBN 80-7083-628-8. The topic of the article is to give short review about nowadays state of research , perspectives and potential applications of hogh pressure discharges. In the oposite to low pressure charges requiring vacuum environment, that is expensive and operationaly complicated ,is the main advantage of high pressure discharges relativeb simple aparature and from it flowing low price and process expenses.

• Kratochvíl P., Hotař A.: Properties and structure of sheets from aluminide Fe28Al4Cr after warm rolling, Kovové materiály, Ústav materiálov a mechaniky strojov SAV, Bratislava, Slovakia, 2002, ISSN 0023-432X. The properties and microstructure of iron aluminide Fe28al4Cr after hot rolling can be modified by heat treatment at 700 or 800oC and by suitable alloying, for example by cerium. The ductility , hardness and structure of Fe3Al-based alloys with and without cerium addition after hot rolling were determined and compared. The formability of Fe28Al4Cr is compared with steel to find suitable rolling temperature.

• Málek P., Kratochvíl, P., Pe�ička, J., Hanus P. and �edivá, I.: The nature of high temperature deformation of the Fe30Al4Cr iron aluminide modified by TiB2, Intermetallics, Elsevier Science Ltd., Amsterdam, Netherlands, 2002, ISSN 0966-9795. The Fe30Al4Cr iron aluminide modified by TiB2 was strained in tension at temperatures between 600 and 900 °C. The influence of temperature on deformation characteristics and on microstructure evolution was studied. The enhanced ductility and strain rate sensitivity called coarse grained superplasticity was explained on the basis of class 1 solid solution behaviour.

• Hakl J., Vlasak T., Kratochvil P.: High temperature deformation of the Fe28Al4Cr iron aluminide modified with additives, Forschungszentrum Juelich GmbH, Juelich, Germany, 2002, ISBN 3-89336-312-2. The article is dealing with high temperature deformation of the Fe28Al4Cr iron aluminide modified with additives.

• Kroisová D.: Effect of selected hydrocarbons on silicone rubber, Sixth International Conference Inorganic Pigments and Binders, Silchem, s.r.o, Ústí, n.L., Czech Republic, 2002, ISBN 80-238-9507-9. The same elastic active chains of the macreomolecular network kave influence during of the material´s deforming and swelling. This effect is described in literature and shows relations between the swelling and the deformation. The paper describes swelling and the effect of milkiness of the system silicone rubber fumed amorpous silica in benzene.

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• Lednický F., Pientka Z., Hromádková J.: Ultrathin sectioning of polymeric materials for low-voltage transmission electron microscopy II. Relief on ultrathin sections, Marcel Dekker, Inc., New York, USA, 2002, ISSN 0022-2348. Ultrathin sectioning, one of the types of specimen preparations for transmission electron microscopy (TEM), has been considered as the most perfect sectioning techniques leading to the thinnest sections (50�100 nm). Following a study based on a newly developed low-voltage TEM technique, a relief on the ultrathin sections of polymer blends was observed which was ascribed to substantial differences in mechanical properties of the blend constituents (1). In this study, an analogous relief was observed with a blend, the constituents of which are both hard in cutting. The origin of the surface relief on ultrathin sections of polymer blends was sought using low-voltage scanning transmission electron microscopy and atomic force microscopy. Polycarbonate/styrene-co-acrylonitrile blend was examined as a representative of blends with all components well under Tg at room temperature. A distinct surface relief was observed on both ultrathin sections and remaining cut surfaces of the blend for both low-temperature and room-temperature cutting. A rougher surface relief was found on the ultrathin sections than on the remaining cut surfaces. The surface relief was assumed to occur in the course of the cutting when extensive shearing occurs. Correspondence of the surface relief with the phase structure proves the influence of different mechanical behaviour of individual blend components on the resulting morphology.

• Janigová I., Lednický F.: SEM study of LDPE-based composites filled with organic fillers, Česko-slovenská konference "Polymery 2002", Praha, Ústav makromolekulární chemie AV ČR Praha, Praha, Czech Republic, 2002, ISBN 80-85009-45-5. The work is directed to staudy of influence of two modification methods to polymers morphology.of composites LDPE/organic filler (particlewise - wooden powder, milled grass, fibrous - recycled paper, aspen fiber) method SEM.

• Janigová I., Sedláčková M., Lacík I., Lednický F.: SEM study of the effect of compatibilizer on morphology of LDPE-based composites filled with organic fillers, 54. kongres chemických společností, Brno 2002, Česká společnost chemická, Praha, Czech Republic, 2002, ISSN 0009-2770. The aim of this work was SEM study of fracture surfaces of composites on basisLDPE at application EMA copolymer as a compatibilizator. The milled grass besides of wooden powder was used as a filler , as a particlewise fillers the recycled paper and aspen fibers as fillers with fibreous structure. Tough fracture was ivestigated by SEM method (at RT) and brittlefracture (at temperature of liquid nitrogen).

• �loufová I., Vlčková B., Gemperle A., Gemperlová J., Bastl Z., Lednický F.: Preparation and characterization of bimetallic Ag-Au colloids, Konference, Sigma-Aldrich, Velké Meziříčí 2002, Česká společnost chemická, Praha, Czech Republic, 2002, ISSN 0009-2770. Bimetallic colloids, i.e. nanoparticles composed from two various metals are last time in the center of interest of many scientific branches. This work describes preparation, characterization of bimetallic Ag-Au nanonanoparticles (Figure .1) with various molar ratios of these metals. The medium magnitude of as-prepared particles is in the range 10 - 16 nm. Colloids were prepared

16

gradual chemical reduction - the nucleus is created by Ag nanoparticle, on which surface was in the second step reduced Au. Prepared colloids with molar ratio Au 0,5 and greater shows on TEM pictures contrasts nucleus-electrons. These contrasts were still observed only in several works and was not cleared. We are trying in this work to explain not only origin of this effect , but also final composition of nanoparticles. For this purposes was used a set of methods: TEM, electron diffraction from selected region, energy-dispersive X-ray analysis, X-ray photoelectron spectroscopy and PC simulation of TEM pictures. On basis of all obtained results was elucidated structure of colloid nanoparticles Ag nucleus Au/Ag casing. Besides it was stated, that particles casing is enriched on surface by Ag .

• Louda P.: Application of plasmatically created coatings, Projektování a provoz povrchových úprav - 28. konference s mezinárodní účastí, Vladimír Jelínek-PPK, Praha, Czech Republic, 2002. Development of new types of coatings due to their heat resistance widened the application field to machnining with rapid cutting rates and beside it to expressive friction decreasing (esspecially coatings on basis of "hard carbon"). Hard coatings have yet another appliction in medicine, electronics, electrotechnics, optics - in the last time first of all for manufacturing of memory media used at computational technique and like a stable decorative coatings at jewellery. Preparation of layers by vacuum methods considerable decreases inpurities concentration in the layer and by it improves its properties and reproducibility of technology and besides it due to very high energy of impinged particles enables the preparation of thermodynamically non-equilibrium coatings with quite new structure and properties. Becuase of little thickness ( cca 1 - 3 mm ), the coating in the most cases does not influence resulting geometry of tool or machine part and for this reason ic deposition a final manufacturing operation. Reasonable and effective application is conditioned by good tool quality including heat treatment, quality machine-tool, suitable choice of coating and its optimalization for given application and quality of used deposition technology.

• Louda P., Militký J., Nocke G.: The surface modification of textile materials, METAL 2002 11th International Metallurgical and Materials Conference, Tanger, s.r.o., Ostrava, Czech Republic, 2002, ISBN 80-85988-73-9. One of ways to succesfull enhancement of useful value of solid matter is positive influencing of their surface properties. Besides of "conventional" technologies of surface treatment of textile material it starts the assertion of modern plasma technologies of surface treatment. It is dealing first of all coating technologies such as PVD (Physical Vapour Deposition).These technologies can be characterized like quantitative step for some surface properties - e.g. chemical resistance (highly exceeding values for common treatment), thermal and electrical conductivity, which can be quite different in comparison with substrate), high temperature resistance (so called thermal barrier), wear resistance (due to high hardness of coating), colourfulness, appearance etc.

• Louda P., �patenka P., Holstein F.: Physical methods of treatment of textile surface, Textilie na prahu nového tisíciletí, Techical University of Liberec, Liberec, Czech Republic, 2002. New potentional method to succesfull enhancement of useful value of solid matter is positive influencing of their surface properties. Besides of "conventional" technologies of surface treatment of textile material it starts the assertion of modern plasma technologies of surface treatment. It is dealing first of all coating technologies such as PVD (Physical Vapour Deposition).These technologies can be characterized like quantitative step for some surface

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properties - e.g. chemical resistance (highly exceeding values for common treatment), thermal and electrical conductivity, which can be quite different in comparison with substrate), high temperature resistance (so called thermal barrier), wear resistance (due to high hardness of coating), colourfulness, appearance etc.

• Louda P., Militký J., Vik M., Nocke G.: Plasma modification of surface of polymer fibers, NANO '02 - National Conference, Akademické nakladatelství CERM, s.r.o., Brno, Czech Republic, 2002, ISBN 80-7204-258-0. One of ways to succesfull enhancement of useful value of solid matter is positive influencing of their surface properties. Besides of "conventional" technologies of surface treatment of textile material it starts the assertion of modern plasma technologies of surface treatment. It is dealing first of all coating technologies such as PVD (Physical Vapour Deposition). These technologies can be characterized like quantitative step for some surface properties - e.g. chemical resistance (highly exceeding values for common treatment), thermal and electrical conductivity, which can be quite different in comparison with substrate), high temperature resistance (so called thermal barrier), wear resistance (due to high hardness of coating), colourfulness, appearance etc.

• Pospí�il P.: The Use of Iron Aluminides in the Furnace Environment, International Conference Junior Euromat, 2002 Lausanne, The Federation of European Materials Societies, Lausanne, �vícarsko, 2002. The ferrous alloys with high content of aluminium was investigated as potential substitution of Cr or Cr-Ni steels. They are characterized by corrosion resistance in HT environments, by of lower density and low material cost compared to other iron based alloys. The material with trade name PYROFERAL was fabricated from the fifties in the foundry Kdyne. Melt crucibles, grids, paddles, HT lining plates and other furnace accessories were cast from PYROFERAL (czech standard CSN 42 2484).The material contains 30 wt.% Al and 1 wt.% C, the castability is comparable with grey iron. The materials which contains 1. 29,5 hm.% Al 0,92 hm.% C 0,60 hm.% Si 2. 30,1 hm.% Al 0,80 hm.% C 0,20 hm.% Si was tested as holders for carburization furnaces in SKODA - AUTO, Mladá Boleslav (automotiv factory). The holders were cast in CZ Strakonice - Foundry division using 100kg induction furnace. Optical structure and hardness were examined of both unemployed and at high temperatur emploeyd as-cast products. Creep resistance was evaluated as a deformation of holders during loading by charge (drive gear wheel). Pronounced creep is observed at the beginning of the exposure, while during continuing deformation the creep rate decreases and it is comparable to that of other high temperature structural materials. The typical temperature in the furnace is 930 °C in periodical 8-hours cycle. Maximum time of employement is at present about 1000 hours.

• �a�alová M.: Evaluation of climatic resistance of fibre composites, Vědecká pojednání VIII-1, Techical University of Liberec, Liberec, Czech Republic, 2002, ISBN 80-7083-628-8. The article is dealing with climatic resiatance of fibre composites with fiber combinations (carnonaceous, aramides and glasses) and their testing at laboratory conditions.

• �ída D., �ída, V., �edivka, V., Denk, F.: High-Tech bioceramics, Jemná mechanika a optika, Fyzikální ústav AV ČR, Praha, Czech Republic, 2002, ISSN 0447-6441. The article is dealing with material problematics in ceramics. Special attention is directed to knee endoposthesis.

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• �ída D.: Ageing of Zirconia, 2nd Consilium of Scientists, Rouen, Francie, 2002. The contribution is concerned with age hardening of zirconium dioxide in water vapor.

• Skrbek B.: Perspective of non-destructive testing of structure of castings ftom cast irons and aluminium alloys, Defektoskopia 2002: Slovenská konferencia so zahraničnou účasťou, Slovenská spoločnosť pre nede�truktívne testovanie, Bratislava, Slovakia, 2002. The field of non-destructive testing (NDT) has its own organization structure at single nations. Rigid qualification rule for workers able to make testing, definite terminology, requirements for certification of measurement technique and ability of testing institutions and labs in single testing methods is given by 114 national standards.

• Skrbek B., Vrbetský M.: Glass semiproducts for glass refinning, NDT Welding Bulletin, Česká společnost pro nedestruktivní testování, Praha, Czech Republic, 2002, ISSN 1213-3825. The article is dealing with checking of internal deffects of satzrated glass productsusing ultrasound defectoscopy.

• Skrbek B., Staněk M.: Heterogeneity of nodular graphite castings - ultrasound diagnostics, NDT Welding Bulletin, Česká společnost pro nedestruktivní testování, Praha, Czech Republic, 2002. The arcicle is dealing with checking of deffects of castings from cast irons with spheroidal graphite.

• Skrbek B.: Rapid determination of grade of grey cast iron at particular place of casting, Progresívní technologie ve slévárenství, Vědecko-technická společnost západních Čech, Plzeň, Czech Republic, 2002. Reliability of Diesel engine expressed by durabilty in hundred of thousands of run kilometers depends not only on perfect machnining and assembling of parts, but also on optimum mechanical properties and deffects of material of these parts.

• Mores A., Skrbek B.: Checking of modified metal for castings from nodular casting iron, Progresívní technologie ve slévárenství, Vědecko-technická společnost západních Čech, Plzeň, Czech Republic, 2002. The article isd dealing with qualiti checking and NDT of castings from cast iron with speroidal graphite.

• Skrbek B.: Reliability criteria of ultrasound detection of internal defects of cast iron castings, Progresívní technologie ve slévárenství, Vědecko-technická společnost západních Čech, Plzeň, Czech Republic, 2002. Standards and rules for eavluation of internal defects. Differences between ultrasound and tramsmission detection of defects. Possibilities of reliability enhancement and visuality of ultrasound defectoskopy of cast irons.

• Skrbek B., Nosek V.: Quantification of the influence of demagnetisation coefficient at magnetic local structuroscopy, 32nd International Conference and NDT Technique Exposition Defectoscopy 2002, Czech Sciety for

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Nondestructive Testing, Liberec, Czech Republic, 2002, ISBN 80-214-2247-5. Principle of local magnetic structuroscopy; its industrial employment in Czech Republic. Contribution of magnetic polarisation, internal demagnetisation coefficient to measured value "M". Theoretical analysis. Ultimate values of external demagnetisation coefficient. Determination of magnetic model of variations of values of magnetic field intensity on the surface of magnetic local pole for particular geometric situations. Practical utilization. Influence of morphology of structural components to value of internal demagnetisation coefficient - perspective of application ot this influence.

• Täschner Ch., Pácal F., Leonhardt A., �patenka P., Bartsch K., Graff A., Kaltofen R.: Synthesis of Aligned Carbon Nanotubes by dc Plasma-Enhanced Hot Filament CVD, Elsevier Sccience Ltd., Amsterdam, Netherlands, 2002, ISSN 0257-8972.

• Täschner Ch., Pácal F., Leonhardt A., �patenka P., Bartsch K., Graff A., Kaltofen R.: Synthesis of Aligned Carbon Nanotubes by dc Plasma-Enhanced Hot Filament CVD, Elsevier Sccience Ltd., Amsterdam, Netherlands, 2002, ISSN 0257-8972.

• Bla�ek J., �patenka P., Taeschner Ch., Leonhard A.: Use of average value of Langmuir probe characteristic for characterization of pulsed discharges, Contributions to Plasma Physics, WILEY-VCH Verlag GmbH & Co. KgaA, Weinheim, Germany, 2002, ISSN 0863-1042.

• Bla�ek J., �patenka P., Pácal F., Taeschner Ch., Leonhard A.: Influence of the local electric field in DC plasma sheath on the alignment of carbon nanotubes - model calculations, Appl.Phys.Lett., American Institute of Physics, Melville, USA, 2002, ISSN 0003-6951.

• Bla�ek J., �patenka P.: Computer Modeling of Plasma Fluctuations and their Influence on the Probe Characteristic, 16th Europhysics Conference on Atomic and Molecular Physics of Ionized Gases and the 5th International Conference on Reactive Plasmas, University of Grenoble, Grenoble, Francie, 2002. A new method of evaluation of Langmuir probe characteristics with presence of distortion is proposed. Application of this method is demonstrated on the modeled characteristic distorted with sinusoidal or Gausian oscillations of the plasma potential.

• Bla�ek J., �patenka P., Pácal F., Taeschner Ch., Leonhard A.: The role of internal plasma parameters on carbon nanotubes growth in plasma enhanced hot filament CVD, Diamond 2002, Elsevier Science Ltd., Amsterdam, Netherlands, 2002, ISSN 0257-8972. Aligned CNT have been successfully synthesized from methane, argon and hydrogen mixtures by plasma enhanced hot filament CVD on different substrates. In order to inspect the behaviour of the plasma produced with the DC-bias and its role on the aligned growth of the nanotubes, the internal plasma parameters were measured by Langmuir probes and OES techniques. Our experiments confirmed that the presence both of the plasma and the bias are necessary for

20

formation of aligned nanotubes in the dual hot-wire/dc-bias deposition reactor. Several hypotheses about the role of the electrical field on the alignment of the nanotubes will be discussed.

• �patenka P., Knoth P., Pfitzmann A., �erý M.: Optical diagnostic as a simple and cheap tool for process control, 3rd European Advanced Equipment Control /Advanced Process Control Conference, Technologie Zentrum Dresden GmbH, Dresden, Germany, 2002. The application of OES as a tool of analyses of an industrial plan operation conditions has been presented. For control of plasma processes reduction of data produced from OES is necessary. Chromatic monitoring has been proposed as a method for data reduction. Based on The chromatic modulation was successfully used for detection of gas composition changes in the nitrogen/hydrogen mixture, end-point detection during plasma etching in oxygen plasma. An investigation of the sensitivity limit of gas monitoring for process control in a down-stream microwave plasma will be presented. A low-cost robust spectrometer for industrial process control will be introduced. Some results of its operation in control of plasma process were presented.

• Täschner Ch., Pácal F., Leonhardt A., �patenka P.: Investigations of carbon nanotubes deposition in PE-HF-CVD systém, COST 527 MC and JWG Meetings 2002 TURKIYE, Hacettepe University, Cappadocia, Turecko, 2002. Results of the plasma investigations generated in a dual system HF-PECVD of carbon nanotubes was presented.

• Täschner Ch., Pácal F., Leonhardt A., �patenka P., Graff A.: Influence of plasma parameters on growth of carbon nanotubes by plasma enhanced hot filament CVD, 8th Int.Conf.on Plasma Surface Engineering �GaPa, Elsevier Science Ltd., Amsterdam, Netherlands, 2002. Aligned CNT have been successfully synthesized from methan, argon and hydrogen mixtures by plasma enhanced hot filament CVD on different thick permalloy, Co or Ni coated silicon substrates at temperatures between 500 and 800 °C.. The electron energy and density of the H2 plasma measured by Langmuir probe and OES techniques was confirmed to play an important role for formation of special structures of the sputtered metal thin films and therefore for the structure and for the adjustment of CNT�s. During the pretreatment etching process the roughness of the surface changed in dependence on plasma power and pretreatment time. Without plasma it is impossible to prepare aligned tubes. Otherwise the plasma power must reached a critical value for formation of aligned structures. The dependence of the plasma parameters on the growth of tubes have been discussed. First results of field emission measurements are discussed, also.

• Täschner Ch., Pácal F., Leonhardt A., �patenka P., Graff A., Kaltofen A.: Synthesis of aligned carbon nanotubes by DC plasma-enhanced hot filament CVD, Elsevier Science Ltd., Amsterdam, Netherlands, 2002. Aligned structures of carbon nanotubes are promising for electronic and field emission applications. The synthesis can be realized by chemical vapor deposition, namely by catalytic CVD, DC plasma enhanced hot filament CVD, and microwave plasma CVD. Aligned carbon nanotubes have been prepared from different mixtures of methane, hydrogen, argon, and nitrogen on various metal coated silicon substrates between 500 and 800°C by DC plasma enhanced hot filament CVD. In dependence on morphology of the thin metal layer, deposition and plasma

21

parameters different carbon nanostructures have been synthesized. The sputtered metal layer thickness and the hydrogen plasma pretreatment of the metal layer have been influenced the structure, especially tube diameter and the tube morphology. By TEM investigations a tubulare structure of the graphite shells and a tip growth could be found. Furthermore the plasma parameters electron energy and density, measured by Langmuir probe investigations are characteristic values for process observation and were discussed. First results of field emission measurements are presented also.

• Täschner Ch., Pácal F., Leonhardt A., �patenka P., Bla�ek J.: Experimental and theoretical investigation of aligned nanotubes growth, Liberec, Czech Republic, 2002.

• Täschner Ch., Pácal F., Leonhardt A., �patenka P., Bla�ek J.: FEMLAB modeling of electric field and induced electric forces acting on carbon nanotubes in DC plasma sheath, MATLAB 2002, Humusof s.r.o., Praha, Czech Republic, 2002. Carbon nanotubes (CNTs � long cylindrical carbon nanostructures) have attracted much research effort since their discovery in 1991. The mechanism of their oriented growth is not fully understood yet. Our FEMLAB computations support the hypothesis that the CNTs alignment is caused by the electric forces acting on CNTs tips in the DC plasma sheath. To verify the reliability of the 3-D FEMLAB modeling we computed electric characteristics of a conductive sphere placed in a homogeneous electric field and compared them with their theoretical values.

• Steklá P., Daďourek K.: Mathematic model of heating at contact welding by mirror, Vědecká pojednání VIII-1, Techical University of Liberec, Liberec, Czech Republic, 2002. Contact thermal welding of plastics is technology often used in automotive industry. Peguform a.s. uses this method at welding of part of cover of get off box of car AUDI B6. Welded materials are PC/ABS and ABS modified PC. Mathematical model of material heating enables tom determine parameters influencing welding process of plastic. The welding process can be optimized by determination of their values and achived quality welding connection.

• Pospí�il D., Kratochvíl P., Hanzal M.: Iron aluminides as a high temperature structural material, METAL 2002 11th International Metallurgical and Materials Conference, Ostrava, Czech Republic, 2002, ISBN 80-85988-73-9. The ferrous alloys with high content of aluminium was investigated as potential substitution of Cr or Cr-Ni steels. They are characterized by corrosion resistance in HT environments, by of lower density and low material cost compared to other iron based alloys. The material with trade name PYROFERAL was fabricated from the fifties in the foundry Kdyn . Melt crucibles, grids, paddles, HT lining plates and other furnace accessories were cast from PYROFERAL (czech standard Č SN 42 2484).The material contains 30 wt.% Al and 1 wt.% C, the castability is comparable with grey iron. The materials which contains 1. 29,5 wt.% Al 0,92 wt.% C 0,60 wt.% Si 2. 30,1 wt.% Al 0,80 wt.% C 0,20 wt.% Si was tested as holders for carburization furnaces in �KODA � AUTO, Mladá Boleslav (automotiv factory). The holders were cast in Č Z Strakonice � Foundry division using 100kg induction furnace. Optical structure and hardness were examined of both unemployed and at high temperature emploeyd as-cast products. Creep resistance was evaluated as a deformation of holders during loading by charge (drive gear wheel). The typical temperature in the furnace is 930 °C. Maximum time of employement is at present about 1000 hours.

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KEZ - Department of Power engineering equipment Head: Assoc. Prof. Jiří UNGER, M.Sc., Ph.D.

Telephone: +42 - 48 - 5353405 E-Mail: jiri.unger@vslib.cz

Secretariat: Telephone: +42 - 48 - 5353411 E-Mail: drahomira.stejskalova@vslib.cz Fax: +42 - 48 - 5353644

• Adámek K., Karel P.: Aerodynamic weft brake, XIII. mezinárodná vedecká

konferencia, �ilinská univerzita �ilina, SjF, KTHS, �ilina, Slovakia, 2002, ISBN 80-7100-955-5. Paper describes result of theoretical project of gentle aerodynamic braking of a linear body transported by air flow. The basis of design is dynamical model of movement of discrete mass elements system, the kind of realization of supposed force action is given by numerical flow modelling. Teoretical results of such numerical experiments applied in the practice give multiple production increasing in comparison to existing system, in addition with expressive increasing of fabric quality, too.

• Adámek K.: Aerodynamics of continual weft brake (CWB), 24. medzinárodná konferencia, New Management Conferencies, s.r.o. �ilina, �ilina, Slovakia, 2002, ISBN 80-8565-521-7. Paper describes flow numerical modelling in system of CWB, experimental verification of theoretical results and their application on air jet loom.

• Adámek K.: Melt-blown technology (air flows numerical modelling), Kolokvium netkaných textilií, TU of Liberec - předná�ky bez sborníku, Liberec, Czech Republic, 2002. Paper describes possibilities of flow numerical modelling applied in melt-blown technology for yarn spinning.

• Pelant J., Adámek K.: Boundary value conditions for some cases of 3D flows, SCI 2002 - the 6th world multiconference on Systemics, Cybernetics and Informatics, IIIS - Int. Institute of Informatics and Systemics, Orlando, Florida, USA, 2002, ISBN 980-07-8150-1. Paper deals with fluid flow for some 3D axis-symmetrical cases from several branches as for instance aeronautics, air jet weaving etc. Numerical modelling can replace the greatest part of experiments needed for hypothesisi verification, shape optimization etc.

• Pelant J., Adámek K.: Air flow around rotating surfaces of carding machine, Liberec, Czech Republic, 2002.

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Numerical air flow modelling excited by carding drum rotation. • Adámek K.: Pneumatic beat-up solution - feasibility study, 2002.

Feasibility study of a new kind of laid-scrim production by air flow. • Dvořák V.: The ejector of classical construction combined with a slot

nozzle, Apliková mechanika 2002, 4. konference s mezinárodní účastí, Ostrava, ČR, 8.- 11.4., V�B - Techical University of Ostrava, Czech Republic, Ostrava, 2002, ISBN 80-248-0079-9. The article presents results of experiments carried out on an ejector of classical construction and on an ejector with a slot nozzle and compares them with experiments made on ejector of combination construction.

• Dvořák V.: A study of flow structure in the entrance part of the mixing chamber of a 2D supersonic ejector, 21. mezinárodní konference praconíků kateder a ústavů vyučujících mechanku tekutin a termomechaniku, Račkova Dolina - Západní Tatry, SR 5. - 7.6., Slovenská Poľnohospodárska univerzita of Nitra, Slovenská Republika, Nitra, 2002, ISBN 80-8069-037-5. The article deals with a study of mixing processes in the entrance part of the mixing chamber af a two dimensional ejector.

• Dvořák V., �afařík P.: Theoretical research of supersonic flow structure in the entrance part of the mixing chamber of 2D ejector, Colloqium Fluid dynamics 2002, Institute of Thermomechanics AS CR, Prague, 23. - 25.10., Institute of Thermomechanics AS CR, Czech Republic, Praha, 2002, ISBN 80-85918-77-3. The article deals with a theoretical computation of supersonic flow structure in the entrance part of the mixing chamber of two dimensional ejector.

• Dvořák V.: Numerical solution of supersonic flow structure in the entrance part of the mixing chamber of 2D ejector, Výpočtová mechanika 2002, 18. konference s mezinárodní účastí, 29. - 31.10., Západočeská univerzita v Plzeni, Czech Republic, Plzeň, 2002, ISBN 80-7082-903-6. The article deals with a Fluent 5 numerical computation of supersonic flow structure in the entrance part of the mixing chamber of two dimensional ejector.

• Novotný P., Unger J.: Comparison of selection heating systems, 21. mezinárodní konference praconíků kateder a ústavů vyučujících mechanku tekutin a termomechaniku, Račkova Dolina - Západní Tatry, SR 5. - 7.6., Slovenská Poľnohospodárska univerzita of Nitra, Slovenská Republika, Nitra, 2002, ISBN 80-8069-037-5. Central heating system, steam pipe-line and price energy, middle power boilers and price energy, air pollution.

• Novotný P., Unger J.: Central heating system, steam pipe-lines after transformation of industry, Acta mechanica Slovaca, Slovakia, Ko�ice, 2002, ISSN 1335 �2393.

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Projection and build �up steam piping in recent times, steam pipe-lines after transformation of industry, reducing energy consumption, cumulative energy losses, necessary changes, rebuilding steam pipe-line.

• Novotný P., Unger J.: Determination heat losses of central heating systém in town Liberec, TU of Liberec KEZ 289/2, Czech Republic, Liberec, 2002. Central heating system, steam pipe-line, cumulative energy losses.

• Olehla P.: Flow of heat through an isolated wall with air enclosure, Improving Human Potencial programme, Plataforma Solar de Almería, Tabernas, Almería, Spain, 2002. The aim of these article is how to solve problems of flow of heat through an isolated wall with air enclosure.

• Olehla P., Olehla J.: Utilization of Fourier transformation in Thermodynamics, 5. international conference Control of power and heating systems 2002 - Automatizace energetických procesů, University TB of Zlín, UTB of Zlín, Czech Republic, 2002, ISBN 80-7318-074-X. Vyu�ití Fourierovy transformace v termodynamice.

• Olehla P., Olehla J.: Computation of regenerative head exchanger, 5. international conference Control of power and heating systems 2002 - Automatizace energetických procesů, University TB of Zlín, Zlín, Czech Republic, 2002. The aim of these article is computation and construction of regenerative head exchanger.

• Olehla P.: Approximation and interpolation by Fourier series and Fourier transformation, 5th International Conference ŘÍP 2002, TU of Pardubice Dlouhé Stráně, TU of Pardubice, Pardubice, Czech Republic, 2002, ISBN 80-7194-452-1. The aim of these article is approximation and interpolation by Fourier series and Fourier transformation.

• Olehla P.: Utilization of Fourier transformation in thermodynamics, Scientific Treaties -Wissenschaftliche Abhandlungen - Práce Naukove, Euroregion Nisa, 2002. TU of Liberec Czech Republic, TH Jelenia Gora Poland, IH Zittau BRD 2002, Liberec, Czech Republic, 2002, ISBN 80-7083-628-8. The aim of these article is how made identification of periodic systems. The artical refer on some errors that can be made not correct interpretation of some terms and are given applicable methods of identification.

• Olehla P., Olehla J.: Standby circuit of photovoltaic cell, XXI. medzinárodná vedecká konferencia kadedier a pracovísk mechaniky tekutín a termomechaniky, SF TU of Ko�iciach, Ko�ice, Slovakia, 2002, ISBN 80-8069-037-5. Its aim is constract standby circuit of photovoltaic cell. The next task was to construct the schemes of the photovoltaic cell and to determine the boundary of some possibilities to improve and enlarge its usage.

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• �ulc J., Havránek V., Murcek V.: Determination of some elements in particulate emissions from Heating Plant Liberec by PIXE method, Rektorát technické univerzity of Liberec, Liberec, Czech Republic, 2002, ISBN 80-7083-628-8. This paper describes application of the PIXEmethod(Proton Induced X-Ray Emission)to the determination of some elements in particulate emission samplesdeposited on a glas filter.It was found that S, V, Fe and Ni elements can be quantitatively determined with acceptable uncertainityup to 10%.Elements with high concentration level in glass fiber material canot be detected in the analysed deposit.

• Skácel D.: What Is Entropy ? Alternativní energie, CEMC, Praha, Czech Republic, 2002, ISBN 1212-1673. Entropy, physical and philosophical meaning.

• Skácel D.: Energy Accumulation, Alternativní energie, CEMC, Praha, Czech Republic, 2002, ISBN 1212-1674. Energy Accumulation, types and problems of the energy accumulation.

• Skácel D.: Low Energy Houses, Alternativní energie, CEMC, Praha, Czech Republic, 2002, ISBN 1212-1675. Basic principles of the low energy building.

• Skácel D.: Solar Systems & What's going on?, Alternativní energie, CEMC, Praha, Czech Republic, 2002, ISBN 1212-1676. Thermal solar systems and their development.

• Urbá�ek J.: Laboratory of flow and of fittings development, XXI.Mezinárodná vedecká konference katedier a pracovísk mechaniky tekutin a termomechanik, Slovenská polnohospodárská univerzita of Nitra, Nitra,Slovakia, 2002. The objectives of Project is building up of new Laboratory of flow and of fittings development for education and industry.

• Unger J., Vít T.: Analysis of layout aerodynamic rate in the gap of frontal automobile mask, Techical University of Liberec, Liberec, Czech Republic, 2002. Identification of turbulent kinetic energy and dissipation in the gap of frontal automobile mask for different technological manufacturing tolerances.

• Unger J., Vít T.: Causes identification of burning up of exchanger "Sahara", Techical University of Liberec, Liberec, Czech Republic, 2002. Analysis of temperature and velocity courses in the heat exchanger flue gases-air with using CFD.

• Unger J., Kopecký V., Svoboda M., Dvořák V., Fraňa K., Vít T., Klauz T., Müller M.: Numerical and experimental study of thermal technical processes, Techical University of Liberec, Liberec, Czech Republic, 2002. Analysis and optimalisation of thermal technical processes in power machines and equipments with using optical anemometrical and numerical methods.

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• Vít T.: Machinery for the study of fluid flow along bented wall at a presence of temperature gradents. identifi-cation of a place of laminar separation of fluid flow, Apliková mechanika 2002, 4. konference s mezinárodní účastí, Ostrava, ČR, 8.- 11.4., V�B - Techical University of Ostrava, Czech Republic, Ostrava, 2002, ISBN 80-248-0079-9. This article describes the construction and realization of experimental equipment for the study of instability in the fluid flow along curved wall at a presence of thermal gradients. The results of static pressure on the surface of cylinder surface for various modes of circulation flow - (various Re and various leak width) - are also mentioned, as well as results of identification of a place of laminar separation of fluid flow.

• Unger J., Novotný P.: Comparison of selection heating systems, KM, Slovenská po'lnohospodárska univerzita of Nitra, Nitra, Slovakia, 2002. Central heating system, steam pipe-line and price energy, middle power boilers and price energy, air pollution.

• Unger J., Vít T.: Analysis of layout aerodynamic rate in the gap of frontal automobile mask, Techical University of Liberec, Liberec, Czech Republic, 2002. Identification of turbulent kinetic energy and dissipation in the gap of frontal automobile mask for different technological manufacturing tolerances.

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KKY - Department of Applied cybernetics Head: Prof. Miroslav OLEHLA, M.Sc., Ph.D.

Telephone: +42 - 48 -5353284 E-Mail: miroslav.olehla@vslib.cz

Secretariat: Telephone: +42 - 48 - 5353283 E-Mail: dana.vasakova@vslib.cz Fax: +42 - 48 - 5105882

• Olehla M., Němeček S.: Basics of Applied Cybernetics, Techical University

of Liberec, Liberec, Czech Republic, 2002, ISBN 80 - 7083 - 652 � 0. Student's Book for students of 3. class of mechanical engineering faculty as a tool and lecture supplement to study the theme "Basic of Aplied Cybernetics".

• Němeček S., Zámi�ová R., Gharazi S. M.: Modernization of teaching cybernetic application in TU of Liberec, Process control 2002, Kouty nad Desnou,9.-12.6.2002, University of Pardubice, Pardubice, Czech Republic, 2002, ISBN-80-7194-452-1. Modernization project of teaching cybernetic application. Its aim is maximum approximation to current state of technical and programm means of automatic control.

• VěchetV., Moučka M.: Writting applications, that use the robust graphics API, 3. Ročník mezinárodní konference "Pedagogický software 2002", České Budějovice, ZFJU České Budějovice, České Budějoviceo, Czech Republic, 2002, ISBN 80-85645-46-7. General - use programming interfaces, which allow the customer to write graphics applications. Use the services of the graphics API in the education.

• Věchet V.: The laboratory equipment on the basis IBM RSI/6000 for the education, IT CAD, 12/2001, CCB, s.r.o., Brno, Czech Republic, 2002, ISSN 0862 - 996X. The laboratory equipment on the basis IBM RSI/6000 for the education.

• Olehla M.: Identification of dynamics systems, Principia Cybernetica, 2. - 4. 9. 2002, Herľany, SR, SF TU of Ko�iciach, Ko�ice, Slovakia, 2002, ISSN 1335 � 2393. The main characteristics of experimental identification is in using data obtained a process by observation, respectiely experimentation. This paper focuses on the identification of linear systems (SISO).

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• �itník, J.: Visualization of industrial networks with using the WWW architecture, Principia Cybernetica, 2. - 4. 9. 2002, Herľany, SR, SF TU of Ko�iciach, Ko�ice, Slovakia, 2002, ISSN 1335 � 2393. This work treats of utilization the Existing WWW architecture to client-server visualization, monitoring the Lonworks industrial network.

• Gharazi S. M., Moučka M.: Make a comparison between the optimal control for LQR and the H2 optimal control, Konference mladých vědeckých pracovníků v oblasti automatizace, Brno, 20.11.2002, VUT in Brno, FSI, Ústav automatizace a informatiky, Technická 2, 616 69 Brno, Czech Republic, 2002, ISBN 80 - 214 - 2255 6. In this paper we tried to show how to use H2 method to design a controller and controll.

• Lenk V.: Some examples from the theory of statistical data proceeding, XIX. International conference: "Long term responsibility for sustainable life", Brno,7.-11. 8. 2002. The paper deals with some examples of utilisation the mathematical statistic in research of natural social problems of sustainable life and presentation ist results and deductions.

• Olehla P., a kol.: Flow of heat through an isolated wall with air enclosure, Improving Human Potential programe, Plataforma Solar de Almeria, Tabernas, USA, ISBN 84-7834-425-x. The aim of these article is how to solve problems of flow of heat through an isolated wall with air enclosure.

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KST - Department of Machine elements Head: Assoc. Prof. Ladislav �EVČÍK, M.Sc., Ph.D.

Telephone: +42 - 48 - 5353316 E-Mail: ladislav.sevcik@vslib.cz

Secretariat: Telephone: +42 - 48 - 5353315 E-Mail: milena.klosova@vslib.cz Fax: +42 - 48 - 5353313

• Pe�ík L.: Vibroisolation of slow- speed machines, Sborník referátov-

XLIII.medzinýárodná vedecká konferencia, TU of Zvolen, Zvolen, Slovakia, 2002, 80-228-1174-2. A lot of machines are during of running a source of dynamic forces, that are transfered into building. Effect of the vibration insulation is to minimize this transfer. The machine is supported by elastic stays, for example constructed as metal or rubber or air springs. They are parallel connected so that have accordant moments of forces to lengthwise and cross axis of the frame of machine. Such elastic lodgment make possible to modulate the oscillation of machine on the frame so as be the dynamic forces into building small and the movement of machine relatively too. For design of the elastic lodgment was created by author computational program, that is disposal at the Technical University of Liberec.

• Pe�ík L, Němeček P.: Dynamic behaviour of couple of weaving machines, Sborník referátov - XLIII. Medzinárodná vedecká konferencia, Zvolen, Slovakia, 2002, 80-228-1174-2. A lot of weaving machines, when running are the source of broad-band noise nad vibrations. One possible way of removing these unfavorable influences on the environment and especially on human beings, is an pneumatic support. Here, air and rubber springs are inserted between the frame of machines and the floor. Under these conditions the transmission of vibration transferred to the floor declines, along with the level of noise. The dynamic characteristics of a machine placed on this elastic base differ somewhat from those of weaving machine fixed to the floor with an usual firm support. For checking of vibratory movement of the couple of weaving machines we use visualization by means of measuring of operation deflection shapes.

• Bure� M., Barbora J.: Board with 6 grades of freedom, Sborník referátov-XLIII.medzinýárodná vedecká konferencia, TU of Zvolen, Zvolen, Slovakia, 2002, 80-228-1174-2. In the paper there is described the device which concept is solved as a space parellelgram suspension of platform with six grades of freedom. Device was designed for research of effects of vibrations to personal organisms during influence in general direction. There is described solution of design of platform. Its positive property is minimazation of corrections that are

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calculated in real time by tranlation movement. It is possible to leave out the corrections in the zone of low amplitudes.

• Mácha A.: The low-cycle fatigue of the staybolt of the steam boiler, Sborník referátov-XLIII.medzinýárodná vedecká konferencia, TU of Zvolen, Zvolen, Slovakia, 2002, 80-228-1174-2. The staybolts connect the plates in the steam boilers. Loadings to this part are very strong and partially variable. It leads to the low-cycle fatigue, crashing this part makes failure of the steam boiler. The Rainflow metrod is used for formulating the loadings.

• Honců J., Pustka Z.: Telescopic semitrailer for logging - running stress and deformation, Sborník referátov-XLIII.medzinýárodná vedecká konferencia, TU of Zvolen, Zvolen, Slovakia, 2002, 80-228-1174-2. Economic logging needs application of recent trasport means and telescopic semitrailer belongs to them. To reach better transport capacity utilization, its overall length may be easily adapted to thinning dimensions. This article deals with determination of deformation and stress distribution in designed and loaded platform using computer calculation.

• �evčík L.: Physical behaviour of virtual computer models, Sborník referátov-XLIII.medzinýárodná vedecká konferencia, TU of Zvolen, Zvolen, Slovakia, 2002, 80-228-1174-2. Physical behaviour of models can be added to the parts and assembly in dependence on input data. These input conditions sould have random type - dimensions, forces, moments, temperature, friction and geometry shapes. Methods include the setting of requirements, combination of requirements, test of feasibility and test of sencibility and optimasation geometry proces. On the basis of user defined demands for geometric and mass optimisation can be realised. Behaviour modelling is a new programme product, which can stay as a part of CAD systems.

• Mácha A.: Determining material properties of rubber, Sborník referátov-XLIII.medzinýárodná vedecká konferencia, TU of Zvolen, Zvolen, Slovakia, 2002, 80-228-1174-2. The article deals with the mechanical properties of rubber and testing methods. Desribes specimens for tensile and pressure testing.

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KOM - Department of Machining and assembly Head: Assoc. Prof. Jan JERSÁK, M.Sc., Ph.D.

Telephone: +42 - 48 - 5353373 E-Mail: jan.jersak@vslib.cz

Secretariat: Telephone: +42 - 48 - 5353361 E-Mail: hana.jenikova@vslib.cz Fax: +42 - 48 - 5353547

• �i�ka, J.: Acoustic Emission During Wear Monitoring of Face-Milling

Cutter, 32. mezinárodní konfernce a výstava NDT techniky - DEFEKTOSKOPIE 2002, ČNDT, Brno, Czech Republic, 2002, 80-214-2247-5. The submited article concerns by experimental investigation of the acoustic emission signal behaviour during the milling in relations with cutting edge wear by means of amplitude analysis of the sensed signal. The results obtained from realized experiments confirm advantages of the using of the acoustic emission method, notwithstanding to difficulties in the course of sensed signal data processing. Acoustic emission appears as very available method for machining process monitoring.

• �i�ka, J.: Identificaton ot the cutting tool state by means of acoustic emission signal processed by neuronal network, Moderní metody ve strojírenském vývoji, LENAM, Liberec, Czech Republic, 2002. The acoustic emissin method apear as very perspective mainly for the tool wear monitoring, because the fundamental substance is directly connected with a deformation accompanying chip creation. Frpm the realized experiment following, that useing of neuronal networks is well-founded, especially in case of some less claer AE signals. Development of an optimal network and its training can be an active element of both an intelligent cutting tool and/or machinig tool in future.

• �i�ka J., Tomová Z.: Scrutiny of State of Face-Milling Cutter Edge by Means of Acouostic Emission Signal, Strojírenská technoogie, UJEP, Ústí nad Labem, Czech Republic, 2002, 1211-4162. Modern machine tools are developed in direction to full automation, in order to work with minimum part of human service. Therefore it is necessary to deal with detailed study and understanding phenomenona which the process of chip formation accompanying. In the submitted contribution is shown an experimental scrutiny of the acoustic emission signal behaviour during milling by means of a face-mill fitted with the single insert. The results obtained from the realized

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experiments confirm possibility, that the AE signal could be the one from sensed signals. The AE signal can gives sufficiently detailed information about the cutting process state.

• �i�ka J., Prukner V., Ogawa D., Sumiya H., Shiraishi M.: Neuronal Network for Tool Wear Monitoring on the Acoustic Emission Signal Basis, 25th European Conference on Acoustic Emission Testing EWGAE 2002, ČNDT, Brno, Czech Republic, 2002, 80-214-2174-6. The acoustic emission (AE) phenomenon is very often used for the monitoring of cutting tool state. It seems that, the most sensitive and the informative component of the AE signal is its amplitude, because the magnitude of amplitudes carrying information about energetic processes taking place in the area of the chip forming. By the other words, amplitudes of AE signal carrying information from the cutting area where new surface of a machined component just originates. Monitoring of AE signal is important because the quality of the new surface depends before anything else on the cutting edge state and therefore the state of the cutting edge stands in the centre of the interest of research. Previous good experience with the AE signal amplitude distribution into a number of energetic levels for the cutting tool wear monitoring brings to idea to use frequency of occurrence of AE signal impulses from the particular energetic levels for processing these data by a neural network. This approach to use the neuronal network for data processing after prior distribution into ten energetic levels brings promising results.

• Holub L.: Exams of applications of the cutiing materials on the gray cast iron, research report, TU of Liberec, Czech Republic, 2002. A subscribe of the material interspace cilinder and brake barrels.

• Holub L.: Fundamental analysis of the subscribe material interspace cilinders of the block motor �koda Auto - Mladá Boleslav č.d. 03D 103011G, research report, TU of Liberec, Czech Republic, 2002. Analysis of influences of the cutting conditions.

• Holub L.: Verification of the relation traction-hardness Al tubes, research report, TU of Liberec, Czech Republic, 2002. Verification of input dates of intermediates.

• Holub L.: Verification of quaqualities of the cutting oil with modern additivum at along turnibg lathe research report, TU of Liberec, Czech Republic, 2002. Comparing cutting část of modern cutting oils.

• Holub L.: Single-purpose machines and lines, research report, TU of Liberec, Czech Republic, 2002. Analitic-synthetic study for automation of the produce JUS at TU.

• Holub L.: Cutting ceramics I, research report, TU of Liberec, Czech Republic, 2002. Work from the development a new cutting ceramics of Saint-Gobaint.

• Holub L.: Cutting ceramics II, research report, TU of Liberec, Czech Republic, 2002. Continuation of a development of a new cutting ceramics of Saint-Gobaint.

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• Holub L., Jersák J.: Verification of quaqualities of the cutting oil with modern additivum at along turnibg lathe, research report, TU of Liberec, Czech Republic, 2002. Comparing cutting cast of modern cutting oils.

• �i�ka J.: Defectoscopy 2002 review of the furnished abstracts and contribution at the date 8. 10. 2002. Acoustic Emission During Wear Monitoring of Face-Milling Cutter., NDT WELDING Bulletin, Tiret, Praha, Čská republika, 2002, 1213-3825. Abstract of the contribution "Acoustic Emission During Wear Monitoring of Face-Milling Cutter".

• �i�ka, J.: Defectoscopy 2002 Book of Abstracts. Acoustic Emission During Wear Monitoring of Face-Milling Cutter, ČNDT, Brno, Czech Republic, 2002. Abstract of the contribution "Acoustic Emission During Wear Monitoring of Face-Milling Cutter".

• �i�ka J., Řasa J.: Intelligent Cutting Tools, TUL-FS-KOM, research report, TU of Liberec, Czech Republic, 2002. Partial report from solving the grant project "Intelligent Cutting Tools".

• �i�ka, J.: Monitoring and automatic supervision in machining aimed at on line tool state determination, research report, TU of Liberec, Czech Republic, 2002. Final report of realization of the international project "Monitoring and automatic supervision in machining aimed at on line tool state determination".

• Jersák J.: Simulation of a plane grinding, Doc, TU of Liberec, Czech Republic, 2002. In the habilitation work is presented an original simulation model of a plane grinding. Interaction between a tool and a pieceman is suply by the open computing algoritm on PC. Validation of the presented model was detaily verify by experiments. There were achieve good accordance between results from real and simulated grinding.

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KSD - Department of Transport machines Head: Prof. Celestýn SCHOLZ, M.Sc., Ph.D.

Telephone: +42 - 48 - 5353155 E-Mail: celestyn.scholz@vslib.cz

Secretariat: Telephone: +42 - 48 - 5353130 E-Mail: barbora.kovarova@vslib.cz Fax: +42 - 48 - 5353139

• Laurin J.: Natural gas as vehicle motor fuel, Slovenský plynárenský

priemisel, Slovakia, 2002, 1335-3853. The presented article deals with characteristics of natural gas and with motivation of its use as fuel for vehicle engines. Significant technical parameters of vehicles with naturel gas engines.

• Tomeh E.: Identifying Motor Vehicles Mechanical Defects by Vibrodiagnostics Methods, Journal of Middle European Construction and Design of Cars, Czech Republic, 2002, 1214 � 0821. Současné vybavení katedry strojů průmyslové dopravy a fakulty strojní TUL dovoluje značně posílit experimentální části studijního programu a dokazuje, �e měření vibrací na vyrobených motorových vozidel nejsou náročné na čas a peníze.

• Němeček P.: Noise in the inside of the car, Acta Mechanica Slovaca, Slovakia, 2002, ISSN 1335-2393. The paper describes the approach to consideration of the noise level inside of the car. The quantity for to search is the articulation index of speaking. There are two cars valuated.

• Beroun S., + kol.: Department of Transport Machines, Faculty of Mechanical Engineering, Technical University of Liberec, Vědecká pojednání, jubilejní sborník, VII/2002, Liberec, Czech Republic, 2002, ISBN 80-7083-628-8. Specialization and results of research and development activity of Department of Transport Machines.

• Beroun S., Scholz C., Kovář Z., Vrbíková V.: Ecological Effect by Combustion of Hydrogen Fuel in Piston Engine, Vědecká pojednání, jubilejní sborník, VII/2002, Liberec, Czech Republic, 2002, ISBN 80-7083-628-8. Hydrogen as motor fuel, results of research work on laboratory single cylinder engine, codition for achieving of extremly low exhaust emissions.

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• Laurin J.: Prospekts of the employment of natural gas for the drive of buses in the Czech republic, 5. International conference of enviromentally friendly city traffic, Státní fond �ivotního prostředí ČR, Karlovy Vary, Czech Republic, 2002. The article deals with problems and prospects of natural gas use as fuel for vehicle motors, especially for city bus motors.

• Laurin J., Bartoníček L.: Low emission bus engines employng natural gas, 5. International conference of enviromentally friendly city traffic, Státní fond �ivotního prostředí ČR, City bus, Natural gas, Gas engenes, Karlovy Vary, Czech Republic, 2002. The presented contribution deals with the use of natural gas as fuel for bus engines ML637NA and ML637NGS. It presents main construction and operational parameters engines, which were developed at the Technical University of Liberec.

• Laurin J.: Hydrogen as a vehicle motor fuel, 5. Mezinárodne sympózium Motorové palivá 2002, Slovenská společnostÿ priemyselnej chémie, pobočka SLOVNAFT Bratislava, Bratislava, Slovakia, 2002, 80-968011-3-9. The article deals with characteristic and conditions of use of hydrogen as a vehicle motor fuel.

• Beroun S., Scholz C., Kovář Z., Bla�ek J., Drozda H., Salhab Z.: Study of the combustion of hydrogen lean mixture in experimental direct injection SI engine, SATL Helsinki Finland, Helsinki, Finsko, 2002, ISBN 951-9155-15-5. The research of the combustion of very lean hydrogen & air mixtures on the testing single-cylinder engine, the results from the experimental research work, the very low NOX emissions from hydrogen-air mixture combustion are achieved at the air excess rati.

• Beroun S., �imáček P., Bla�ek J., Moc L., �ebor G. Maxa D., Fiedlerová Z., Pospí�il M.: Oxidizing stability, shelf life and emissive characteristics mixed bionaft, REO TRADE Ostrava, V�CHT Praha, Reotrib 2002, Velké Losiny, Czech Republic, 2002, ISBN 80-7080-481-5. Gas engines like ecological alternative of the vehicle drive, characteristic of the individual alternatives of the low emission gas driven vehicle engines employing LPG, ecological effect and the quality of the technical solution of the gas engine.

• Beroun S., Scholz C., Tuček G.: LPG as Fuel for Motor Vehicles � Advantages and Requirements, AEGPL Congress Prague, Paris, Francie, 2002. Gas engines like ecological alternative of the vehicle drive, characteristic of the individual alternatives of the low emission gas driven vehicle engines employing LPG, ecological effect and the quality of the technical solution of the gas engine.

• Beroun S., Scholz C., Bla�ek J.: Combustion process parameters of motor fuels in cylinder engine, Medzinárodné sympózium MOTOROVÉ PALIVÁ 2002, Slovenská společnost priemyselnej chemie, Slovnaft Bratislava, Bratislava, Slovakia, 2002, ISBN 80-968011-3-9.

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Motor fuel and their combustion in piston engine, combustion process parameters, research work and experimental results.

• Beroun S., Scholz C., Tuček G., Bene� K., �ultys M.: Low emissions gaseous supergarged engines ML 636 PB for municipal buses, 5. Mezinárodní konference ekologické městské dopravy, STU� Karlovy Vary, SF�P Praha, Praha, Czech Republic, 2002. Gas bus motor, construction and setting for achievement very low exhaust emissions, operation bus with gas-engine, checking of emissions parameters.

• Beroun S., Scholz C., Tuček G.: Contribution of gas fuelled buses engine for decrease emission injurant to environment at towns Most and Litvínov, VIII. mezinárodní konference Euroregionu Čechy � Sasko � Dolní Slezsko, Český svaz vědeckotechnických společností, Česká společnost pro �ivotní prostředí, Praha, Czech Republic, 2002, ISBN 80-02-01509-6. Load life environment in town from urban buses operation, ecological effect converting diesel buses on gas buses in town Most and Litvinov (Nord czech region).

• Beroun S., Bla�ek J., Belda L.: Influence operational mode of SI turbocharged engine on exchange of cylinder charge, XXXIII. medzinárodná vedecká konferencia katedier KOKA 2002, Slovenská polnohospodárska univerzita of Nitra, Nitra, Slovakia, 2002, ISBN 80-8069-051-0. Influence of back-pressure in exhaust manifold on exchange of cylinder charge in supercharging motor, comparison results from calculation and experiment.

• Beroun S.: Alternative Fuels and the Conditios of their Employment in the Low-emission Piston Engines, 9th International Scientific-Technical Cenference on Internal Combustion Engines, Automobile Technics and Transport, Scietific-Technical Union of Mechanical Engineering in Bulgaria, Sophia, Bulharsko, 2002. Alternative fuels and their properties, the methods of mixture creating and properties of mixture and their burning products. Construction, arrangement and adjustment of piston engine for low emission achievement.

• Beroun S., Tomeh E., Bene� �.: Vibrodiagnostics as a Metod to increase the operating realibility of motor vehicles, Realibility and Diagnostic of transport Structures and Means, University of Pardubice, Pardubice, Czech Republic, 2002, ISBN 80-719-464-5. Utilize methods of technical diagnostics for analyses signal (pressure, noise, vibration) dynamic character to identification technical state motor vehicle and his aggregate.

• Beroun S., �imáček P., Bla�ek J., Moc L., �ebor G. Maxa D., Fiedlerová Z., Pospí�il M.: Emission characteristics of Biodiesel fuels containing rape seed methylesters (RME) or rape seed ethylesters (REE), Medzinárodné sympózium MOTOROVÉ PALIVÁ 2002, Slovenská společnost priemyselnej chemie, Slovnaft Bratislava, Bratislava, Slovakia, 2002, ISBN 80-968011-3-9.

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Results of emission tests of high-speed supercharging vehicle diesel engine on mixed bio-diesel fuels with different content metylester and etylester rape oil.

• Beroun S., �imáček P., Bla�ek J., Moc L., �ebor G. Maxa D., Fiedlerová Z., Pospí�il M.: Emission Properties of Diesel Fuels containing Methyl or Ethyl Esters of Rapeseed Oil, 11th International Symposium Transport and Air Pollution, Graz University of Technology, Graz, 2002, ISBN 3-901351-59-0. Results of emission tests of high-speed supercharging vehicle diesel engine on mixed bio-diesel fuels with different content metylester and etylester rape oil

• Beroun S., Scholz C., Tuček G., Bene� K., �ultys M.: Low emissions gaseous supergarged engines ML 636 PB for municipal buses, 5. Mezinárodní konference ekologické městské dopravy, STU� Karlovy Vary, SF�P Praha, Karlovy Vary, Czech Republic, 2002. Gas bus motor, construction and setting for achievement very low exhaust emissions, operation bus with gas-engine, checking of emissions parameters.

• Bla�ek J.: Research and developing of piston engines with using of process visualization inside engine, MOTOAUTO´02 - PROCEEDINGS - VOLUME I "INTERNAL COMBUSTION ENGINES", Territorial organization of scientific - Technical union - Russe, Bulgaria, 2002, 954-90272-7-9. Solving of many problems in research, development and practise on internal combustion engines is successful by using of visualization methods. This paper presents of examples possible utilization by research and development. Results are showed from resear.

• Scholz C., Bla�ek J., Drozda H.: Visualization of combustion process and fuel injection, XXXIII. Medzinárodná konferencia katedier a pracovísk spaľovacích motorov slovenských a českých vysokých �kôl, konanej v rámci osláv 40. Výročia zalo�enia odboru mechanizácie poľnohospodárstva. Zborník z medzinárodnej vedeckej konferencie, KV a TZ SPU of Nitra, Slovakia, 2002, 80-8069-051-0. By solving of many problems in the development and in practice is it possible with the high efficiency to use of visualization methods. Examples of possible utilization by research and development of combustion engines. This article presents VisioScope fr.

• Bla�ek J.: Behavioral of breaking of joint bus, Sborník anotací předná�ek XXVII. Semináře (CD - Sborník předná�ek XXVII. Semináře), VYSOKÁ �KOLA BÁŇSKÁ - Technical University of Ostrava, Ostrava, Czech Republic, 2002, 80-248-0155-8. The paper show the question of the bus braking. The theoretical part deals with utilitě of adhezion � EHK no.13 and with determination of braaking distance. Next is describe a brief description of the program autobus.xls.

• Brabec P., Malý M., Vo�enílek R.: Calculation of disk brake caliper, Moderní metody ve strojírenském vývoji - Seznam anotací příspěvků konference, Janov n. Nisou, Czech Republic, 2002.

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The theme of paper is optimalization of shape disk brake. The optimalization was made to minimize deformations and tensions of disk brake. The softwares ProENGINEER and ProMECHANICA were used for solution this problem.

• Brabec P., Vo�enílek R.: Single-track and two-track model of vehicle, VYSOKÁ �KOLA BÁŇSKÁ - Technical University of Ostrava, Sborník anotací předná�ek XXVII. Semináře (CD - Sborník předná�ek XXVII. Semináře), Czech Republic, 2002, 80-248-0155-8. The report occupies by simulation of a steering system for the rear wheels of a vehicle. The simulation was done for single-track and two-track model of vehicle. The MATLAB was used for solution this problem.

• Brabec P., Vo�enílek R., Kefurt P., Scholz C.: Calculation of stationary engine case, XXXIII. Medzinárodná konferencia katedier a pracovísk spaľovacích motorov slovenských a českých vysokých �kôl, konanej v rámci osláv 40. Výročia zalo�enia odboru mechanizácie poľnohospodárstva. Zborník z medzinárodnej vedeckej konferencie, KV a TZ SPU of Nitra, Nitra, Slovakia, 2002, ISBN 80-8069-051-0. The theme of paper is optimalization of shape engine case. The optimalization was made to minimize deformations and tensions of engine case. The softwares ProENGINEER and ProMECHANICA were used for solution this problem.

• Beroun S., Scholz C., Bla�ek J., Drozda H.: Hydrogen - fuel for the SI - engines., Auto Sympo 2002, ČAS � ČSVTS, Praha, Czech Republic, 2002, 81-02-01500-2. The research was realised in the laboratory at the Department of Industrial Conveying Machines on a single cylinder test motor, which had been modified in its construction and equipped with special accessories for operations using hydrogen fuel.

• Tomeh E.: Diagnostics of Machine tools drives and the display of their defects in vibration spectra., DIAGO 2002, TU of Ostrava, Ostrava, Czech Republic, 2002, 80-248-0045-4. The methods and means of vibration spectra measurement and analysis are instruments in the modern way of machine tools quality control and identification of mechanical defects and their influence over the products quality.

• Tomeh E.: Measuring of vibration as a tool for Maitenance of Printing Machines, AGROTECH NITRA 2002, Slovenská plnohospodářská univerzita of Nitra, Nitra, Slovakia, 2002, 80-8069-097-9. This report allows to outline the advantages of using technical diagnostics methods on printing machines. These methods are an instrument in the modern way of controlling maintenance quality of machines and equipment.

• Tomeh E., Beroun S., Bene� �.: Vibrodiagnostics as a method to increase the operating reliability of motor vehicles, Reliability and diagnostics of Transport Structures and Means 2002, University of Pardubice, Pardubice, Czech Republic, 2002, 80-7194-464-5.

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It is necessary to have a deep understanding of mechanical systems and motor vehicles construction, when designing and developing new equipment and also when solving problems of noise and vibration of vehicles in operation.

• Pe�ík L., Němeček P.: Dynamic behaviour of couple of weaving machines, XLIII. Mezinárodná vedecká konferencia katedier častí a mechanizmov strojov, Drevárska fakulta Technickej univeerzity vo Zvolene a Drevársky kongres, Zvolen, Slovakia, 2002, ISBN 80-228-1174-2. A lot of weaving machines, when running are the source of broad-band noise and vibrations. One possible way of removing these unfavorable influences on the environment, and especially on human beings, is an pneumatic support.

• Němeček P.: Identification of dynamic quality of hood car, Zborník z medzinárodnej vedeckej konferencie KOKA 2002, Slovanská poľnohospodárska univerzita of Nitra, Mechanizačná fakulta, Nitra, Slovakia, 2002, ISBN 80-8069-051-0. Thesis is occupied with description of dynamic behaviour of hood motor lpace car, into 2 different practicable hood, they are differentiated in type guard grille.

• Novák J., Němeček P.: Operation deflection shapes in technical diagnostics, Reliability and Diagnostics of transport Structures and Means 2002, University of Pardubice, Pardubice, Czech Republic, 2002, 80-7194-464-5. The disadvantage of many diagnostic methods is their relative complexity, understandability to only in-group operators and limited possibilities to address the lay public.This disadvantage is removed by vibration method called " Operation deflection shape.

• Bene� �.: Problems classification infasoun and low frequency noise in environment, Diagnostika 2002, Vojenská akademie Brno, Brno, Czech Republic, 2002, 80-248-0045-4. Effects infrasound on man. Limit values for infrasound in CR. Measured values in Provodin are exceeding recommeded values to DIN 45 680.

• Beroun S.,Vorel V., Bla�ek J.: The adaptation of the SI engines � 1,4 MPI and ML 636 NG for visualization of processes inside engine cylinder, research report, TU of Liberec, Czech Republic, 2002. Technical report describes the adaptation of the cylinder head of the gasoline engine S 1,4 MPI and gas-engine ML 636 NG for location of the engine visioscop to visualization of processes inside cylinder engine.

• Beroun S., �techr V., Bla�ek J.: Production NO at combustion process in SI Engine, research report, TU of Liberec, Czech Republic, 2002. Technical report describes computational solving the formation of NO in the combustion mixture at SI engine and result confronts with meassured value of NO in exhaust gases.

• Bla�ek J., Drozda H., Scholz C.: Modification of engine �-A for visualization of the injection, research report, TU of Liberec, Czech Republic, 2002.

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The technical paper describes to adjustment designed and implementation on the intake manifold gasoline engine �KODA 1.4 MPI for visualization of action in the intake manifold by the help of system AVL Engine Videoscope.

• Bla�ek J., Scholz C.: Modification of engine �-A for visualization of the injection, research report, TU of Liberec, Czech Republic, 2002. The technical paper describes to adjustment designed and implementation on the intake manifold gasoline engine �KODA 1.4 MPI for visualization of action in the intake manifold by the help of system AVL Engine Videoscope.

• Brabec P., Vo�enílek R., Scholz C.: Combustion-force proportioning, research report, TU of Liberec, Czech Republic, 2002. This report is continuation of the contributions (Crankcase stiffness of internal combustion engines (1.stage and 2.stage)), which occupy by an engine block. The engine block was pressed by static and dynamic loads. It sets itself an aim define of combust.

• Brabec P., Vo�enílek R., Malý M.: Disk brake kos, research report, TU of Liberec, Czech Republic, 2002. The report sets itself an aim optimalization of shape disk brake. The optimalization was made to minimize deformations and tensions of disk brake. The softwares ProENGINEER and ProMECHANICA were used for solution this problem.

• Tomeh E., Korous K.: The analysis of FCV gearbox vibration - Appreciation of the technical state, research report, TU of Liberec, Czech Republic, 2002. The research discusses large variance of results from SKODA stand from the analysis of measured vibration spectra. There are described the main causes of vibration detected by SKF analyzer.

• Tomeh E.: Identification of gearbox mechanical defects in Skoda automobile by vibration measurement, research report, TU of Liberec, Czech Republic, 2002. The technical report shows methods and results of vibration measurement on the gearbox of SKODA vehicle MQ 200, with the aim of detecting the sources of vibration and appreciating the efficiency and repetition of measurement on SKODA stand.

• Tomeh E., Korous K.: Vibration analysis in FQE gearbox. Appreciation of bearings technical state, research report, TU of Liberec, Czech Republic, 2002. The research mentions probable causes of increased noisiness signalized by the results of production vibration measurement on the stands in hall M6.

• Novák J.: Visualization noise in industrial interior, research report, TU of Liberec, Czech Republic, 2002. The aim of this article is basic divide the method for calculation noise in the industry. The article is depicting computing metod and software for easy solution the noise in the industrial interior.

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KSK - Department of Glass and Ceramics machines Head: Assoc. Prof. Franti�ek NOVOTNÝ, M.Sc., Ph.D.

Telephone: +42 - 48 - 5354103 E-Mail: frantisek.novotny@vslib.cz

Secretariat: Telephone: +42 - 48 - 5354102 E-Mail: jarmila.herzigova@vslib.cz Fax: +42 - 48 - 5354157

• Horák M., Novotný F.: Numerical Model of Contact Compliant Gripping

Element with an Object of Handling, Conference ICCC´2002, V�B - Techical University of Ostrava, Malenovice, Czech Republic, 2002, 80-248-0089-6. The paper deals with the problem of numerical simulation of contact between compliant gripping element and rigid object of handling.

• Horák M.: Computer Simulation of Robotic Manipulation with a Glass Products, 11. Česká konference o skle, V�CHT � Praha, Praha, Czech Republic, 2002, 80-02-01480-4. Práce presentuje mo�nosti počítačového modelování dynamických sil při ře�ení manipulačních úloh v oblasti robotizované manipulace.

• Hotař V., Novotný F., Chrpová E., Lang M.: Application of Fractal Geometry In Glass Industry � Overview, ISQVPFD 2002, University of Ljublana, Bled, Slovinsko, 2002, 961-6238-58-2. The article describes applications of fractal geometry in on-line control of a window glass production process and application in off-line describing of some defects in glass and other possibilities.

• Hotař V.: Application of Fractal Geometry In Glass Industry, 11. Česká konference o skle, V�CHT � Praha, Praha, Czech Republic, 2002, 80-02-01480-4. A presentation of fractal geometry and previews of application possibilities for describing data from glass productions.

• Hotař V., Novotný F.: Possibilities of Fractal Geometry Application in Glass Industry, Glass Odyssey, University of Montpellier II, Montpellier, Francie, 2002.

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The article presents a theoretical background of application possibilities for monitoring and control of production process and products in glass industry by the fractal geometry.

• Matou�ek I.: Numerical Simulation and Optimisation of Glass Forming Cycle, Proceedings of the 2nd International Colloquim, Universitaires de Valenciennes, Valenciennes, Francie, 2002. Paper deals with the problem of numerical simulation of glass forming process, possibilities of glass forming optimisation and results verification.

• Matou�ek I.: Numerical Simulation of Glass Forming, 11. Česká konference o skle, V�CHT � Praha, Praha, Czech Republic, 2002, 80-02-01480-4. Paper deals with the problem of numerical simulation of glass forming process; attention is paid to the problem of identification of technological problems in the pre-manufacture stage and possibilities of glass forming optimisation.

• Matou�ek I., Steklý J.: Numerical Simulation of Press-blow Process of Glass, Sklář a keramik, Česká sklářská společnost, Teplice, Czech Republic, 2002, 0037-637 X. Possibilities of practical use of numerical simulation tools are demonstrated on analysis of crystal glass forming cycle.

• Novotný F., Horák M.: Stability of Gripping of the Object by Means of Vacuum Gripper, ROBTEP 2002, Strojnícka fakulta TU of Ko�iciach, Ko�ice, Slovakia, 2002, 80-7099-826-1. Paper deals with the problems of the stable gripping of objects by means of vacuum grippers. Results of numerical simulation of contact problem are presented and progress history of deformation of vacuum gripper under loading of gripped body is analysed.

• Chrpová E., Hotař V.: Monitoring And Control of Textile Processes, ISQVPFD 2002, University of Ljublana, Bled, Slovinsko, 2002, 961-6238-58-2. The work was intended to develop a suitable software toolbox, complete with hardware equipment, measurements of production processes, and analyses of the measurements from a carding process, a weaving process, a paper production process and others.

• Chrpová E., Hotař V.: Application of Fractal Geometry in Paper Producing Process, XIII. mezinárodní konference: Papír a celulóza 2002, Svaz průmyslu papírů a celulózy, Brno, Czech Republic, 2002. In the project NOVISCAM a modular system for monitoring, measurement and control of a production process in real time was developed. The system was also developed for a paper production process. The system includes own software, which used statistic tools, fractal dimension and colorimetry.

• Novotný F., Matou�ek I., Horák M., Hotař V.: Application of Computer Modelling in the Glass Manufacture, Vědecké pojednání, Liberec, Zittau, Jelenia Góra 2002, V�P, ES Liberec, Liberec, Czech Republic, 2002, 80-7083-628-8. Paper is focused on three fundamental directions of numerical simulation used for the solution of technical problems in glass industry, as follows: numerical simulation of glass forming process, computer modelling of robotics manipulation and principles of fractal geometry.

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• Chrpová E., Hotař V.: A Fast Image Processing Method For Quality Control of Textile, 1st International conference on advantage technologies for developing countries, Slovonský Brod, Slovinsko, 2002, 3-901509-32-1. Our research work focuses on the development and application of the means for computer image analysis of dynamic processes. The goal is to affect the quality of the products.

• Matou�ek I.: The International Conference about Numerical Simulation of Glass Forming Process, Sklář a keramik, Česká sklářská společnost, Teplice, Czech Republic, 2002, 0037-637 X. The paper is about a course of conference.

• Matou�ek I.: TC 25 "Glass Forming" and International Commision on glass, Sklář a keramik, Česká sklářská společnost, Teplice, Czech Republic, 2002, 0037-637 X. Paper inform about activities technical committee TC 25 that deals with a problem of development and application of numerical methods for simulation of glass forming processes.

• Stehlík, J.: Stress Analysis of Steel Structures. Buckling Load of Compact Bars, TU of Liberec, Liberec, Czech Republic, 2002. Text book for checking the plane and lateral-torsion buckling of compact bars according to ČSN 731401.

• Klebsa V.: Glass Technology for HF, TU of Liberec, Liberec, Czech Republic, 2002. Principles of glass manufacture are described in this university mimeographed. Chapters are sorted according to basic terms, properties of silica glasses, batching, melting, feeding, forming, annealing and refining.

• Hotař V., Novotný F.: Possibilities of Quantitative Definition of Pressings Surface Roughness and Stung Hole Study, research report, TU of Liberec, Liberec, Czech Republic, 2002. The report is intended to a quantitative definition of surface roughness stung holes of glass costume jewellery using statistic tools and fractal geometry.

• Hotař V., Novotný F.: Operating Variable Time Series Description and Evaluation of Using Fractal Geometry and Statistic Analyses Methods, research report, TU of Liberec, Liberec, Czech Republic, 2002. A methodology of a data description and of theirs correlation searching was developed. The methodology, which used fractal geometry, statistic tools, attractors, etc., was applied to data sample from glass production line: Float.

• Novotný F., Horák M.: Study of Sorting Operation and Manipulation with Presswork from Press G12 on Exit from Cooling Foundry, research report, TU of Liberec, Liberec, Czech Republic, 2002. This work shows possibilities of automatic sorting and described basic principles of non-destruction manipulation with mouldings in all product range.

• Matou�ek I., Cibulka J.: The Analysis of Temperature Fields in Glass-press Plunger, research report, TU of Liberec, Liberec, Czech Republic, 2002.

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Research study deals with the analysis of temperature fields in glass-press plunger with complicated shape and possible ways of their optimisation.

• Cibulka J., Matou�ek I.: Glass Forming, research report, TU of Liberec, Liberec, Czech Republic, 2002. This paper described non-contact measurement of temperature of glass press moulds.

• Klebsa V.: Study of a New Way Chandelier Arms Forming, research report, TU of Liberec, Liberec, Czech Republic, 2002. Present mode of moulding chandeliers arm presents gas ring fomentation and a manual twisting. This work shows a new design of automation this operation (conveyance, manipulation and twisting).

• Novotný F.: Machines Optimalization for Glass Forming with Sequential Link to the Manipulation with Products, research report, TU of Liberec, Liberec, Czech Republic, 2002. In paper the results in the year 2002 are described. Report summaries process and results of working on numerical simulation of glass process moulding with an accent into 3D modelling of feeding glass process and sequencing automatic manipulation.

• Stehlík J.: Stress Analysis of the Turning Complex OK 96-57, research report, TU of Liberec, Liberec, Czech Republic, 2002. There is stress analysis of the mechanism with two turning booms and hangers for medical apparatures.

• Stehlík J.: The Stress Analysis and Checking the Buckling of the Thin Wall Steel Beam, research report, TU of Liberec, Liberec, Czech Republic, 2002. There is stress analysis and checking the buckling of the thin wall steel beam.

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KTS - Department of Textile and clothing machines Head: Assoc. Prof. Jaroslav BERAN, M.Sc., Ph.D.

Telephone: +42 - 48 - 5353171 E-Mail: jaroslav.beran@vslib.cz

Secretariat: Telephone: +42 - 48 - 5353173 E-Mail: jana.dvorakova@vslib.cz Fax: +42 - 48 - 5353514

• Exner P.: Analysis device for regulation the tension forces of assembled

yarns, Aplikovaná mechanika 2002, V�B of Ostrava, Ostrava, Czech Republic, 2002, 80-248-0079-9. The thesis is aimed at irregularity of the tension forces of assembled yarns on the automatic winding machine. If the problem is not eliminate than at follow up twisting can become at looping of assembled yarn. In the experimental part the measuring of tension forces during the unwinding of yarn from pattern is accomplished. Analysis device for regulation with view to attain difference of tension forces of assembled yarns was the main target. It was executed several possible solutions. Each design has its own mathematical model for the entry tension forces calculation. When composing the model, the values obtained in the experimental part were used for the marginal conditions. Every variants was followed on achievement minimum difference between the output tension forces behind regulation device and it was devised optimum solution.

• Beran J.,Kracík V.,Tuma L.: Dynamic Model of Yarn Unwinding on the Automatic Winding Machine, International Conference on Structural Dynamics Modelling, International Conference on Structural Dynamics Modelling, Madeira Island, Portugal, 2002, 621-628. In this paper the mathematical model of the unwinding process in nonstationary balloon is investigated. This model describes the whole unwinding process from starting of yarn motion up to stationary motion. The yarn is represented by a chain made up of small straight segments having equal length connected at the ends by spherical joints. Lagrange�s equations of yarn motion are derived with following assumptions. The yarn is perfectly flexible and the yarn mass per unit length is constant throughout its length. The air drag is assumed to act in the direction opposite to the component of the yarn velocity normal to the threadline. The air drag coefficient is assumed to be constant along the whole length of the ballooning yarn. Model is used for the development of computer program and enables computer simulation.

• Mrázek J.: Dynamics of the Shedding Mechanism of Weaving Looms, International Conference on Structural Dynamics Modelling, International

46

Conference on Structural Dynamics Modelling, Madeira Island, Portugal, 2002, 621-620. The present study is concerned with the dynamic analysis of the shedding mechanism that consists of a relatively long kinematic chain including a number of non-linearities that bring about undesirable impacts in the mechanism.The study presents a shedding mechanism of a new principle, eliminating the lateral shift guiding of the healds, and with a rectilinear movement of the healds provided by direct joint guiding.

• Beran J.: Optimization of Device for the Regulation of the Tensile Forces in Doubled Yarns, 4.Mezinárodní konference TRANSFER 2002, TU of Trenčín, Trenčín, Slovakia, 2002, ISBN 80-88914-75-2. In this article a computational model for optimisation of the device for the regulation of the tensile forces in doubled yarns during the winding process on automatic cross-winding machines is described. The devised equipment makes use of two comb tensioners, interconnected mechanically. The stationary mathematical model of this device is used for predicting design characteristic. The optimisation is aimed to achieve approximately equal values of the tensile forces in the two doubled yarns on the output of tensioners with satisfying geometrical and technological restrictions . The theoretical results have been verified on a real mechanism using measuring of lengths of the doubled yarns, which were winding on the package.

• Mrázek J.: The dynamics of the Knitting Machine Device Drive, 4.Mezinárodní konference TRANSFER 2002, TU of Trenčín, Trenčín, Slovakia, 2002, ISBN 80-88914-75-2. The contribution deals with the mechanical stress of the device driving mechanism of the ANGE12 low-diameter knitting machine. The dynamic analysis is carried out with the help of the mathematic model constructed with the help of the Lagrange equation of the 2nd kind. The designed model respects the influence of tooth clearances, the flexible bindings between the individual wheels, the weight parameters, the different character of system start-up and the influence of the needle and slider systems. The as the outcome we obtained the behaviours of kinematic quantities as well as moments of force at individual system elements, which are used for stress determination and dynamic behaviour of the system.

• Bílek M.: Decreasing of the Dynamic Stress on the Shedding Mechanism through the Optimisation of the Shape of the Heald, 4.Mezinárodní konference TRANSFER 2002, TU of Trenčín, Trenčín, Slovakia, 2002, ISBN 80-88914-75-2. The study is concerned with an analysis of the influence of the mass of the system of healds upon the behaviour of the weaving loom. A special attention is given to the analysis of the load exerted upon the shedding mechanism. The present study solves the problems in question in the theoretical field � devising a mathematical model able to describe the problems to be solved adequately. The study shows the way how to lower the overall dynamic load upon the individual parts of the weaving loom by reducing the weight of the heald. The reduction is achieved by the mass optimisation of the shape of the heald, in order to obtain a more suitable shape of this component, but observing the submitted optimisation criteria.

• Kaniok J., Bílek M.: Method of the Calculation of the Gear Transmissions for the Winding Machines Manufacturing Thick Cords, with a Precise Cross-Wound Package, 4.Mezinárodní konference TRANSFER 2002, TU of Trenčín, Trenčín, Slovakia, 2002, ISBN 80-88914-75-2. The study is concerned with the problem of finding an optimum winding ratio for the bobbin upon which thick cords are to be wound, and the proposal and calculation of the gear transmissions

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for the winding unit with a precise cross-wound package, in order to achieve the best possible filling of the capacity of the bobbin in the winding process.

• Prá�il V., Vítámvás Z.: Electromagnetic thread tensioner and thread unwinder for textile machines, research report, TU of Liberec, Liberec, Czech Republic, 2002.

• Bílek M.: Analysis of Unwinding and Winding Process in Weaving, research report, TU of Liberec, Liberec, Czech Republic, 2002.

• Mrázek J.: Optimisation and innovation of textile machine systems and their influence in textile processes, research report, TU of Liberec, Liberec, Czech Republic, 2002.

• Beran J.: Optimisation of weaving and spinning machines in view of their outputs and reliability of their mechanical systems, research report, TU of Liberec, Liberec, Czech Republic, 2002.

• Kaniok J.: Analysis and optimisation of the winding of sewing thread, research report, TU of Liberec, Liberec, Czech Republic, 2002.

• Beran J., Exner P., Prá�il V., Vítámvás Z.: Optimisation of the equipment for the regulation of tensile forces in doubled yarns on winding machines, research report, TU of Liberec, Liberec, Czech Republic, 2002.

• Bílek M., Kopal J., Mrázek J., Novotný P., Vítámvás Z.: Control mechanisms analysis and optimisation of knitting machines for higher power output, research report, TU of Liberec, Liberec, Czech Republic, 2002.

• Bílek M., Čikl Z., Dubový L., Mrázek J., Vítámvás Z.: Testing stand projection and realisation for dynamic analysis healdshaft frame of weaving machines, shedding mechanisms and dobby mechanisms, research report, TU of Liberec, Liberec, Czech Republic, 2002.

• Čikl Z., Konečný M.: Dynamics optimisation of sewing machine, research report, TU of Liberec, Liberec, Czech Republic, 2002.

• Beran J., Malý M., Tůma L.: Digital Prototype Laboratory, research report, TU of Liberec, Liberec, Czech Republic, 2002.

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KVS - Department of Manufacturing systems Head: Assoc. Prof. Přemysl POKORNÝ, M.Sc., Ph.D.

Telephone: +42 - 48 - 5353354 E-Mail: premysl.pokorny@vslib.cz

Secretariat: Telephone: +42 - 48 - 5353364 E-Mail: hana.vyvleckova@vslib.cz Fax: +42 - 48 - 5353656

• Skalla J.: Electric servodrives, MM Průmyslové spektrum, Czech Republic,

2002, ISSN 1212-2572. General survey of electric servodrives.

• Skalla J.: Dynamical error of the linear electrical feed drive of NC machine tools, 47. Internationales wissenschaftliches Kolloquium, Technische Universität Ilmenau, Germany, 2002, ISSN 0943-7207. The paper shows survey of the dynamic error at interpolation and standard methods of its compensation (velocity and acceleration feedforward). Besides of that standard method the effect of setting velocity regulator is discussed. The results were generated from computer simulation in Matlab/Simulink and verified by measuring on CNC vertical machining centre with electric linear motors.

• Skalla J.: The quadrant error at circular interpolation, Elektrické pohony a výkonová elektronika EPVE 2002, FEI VUT in Brno, Brno, Czech Republic, 2002, ISBN 80-214-2246-7. The friction in servomechanisms of NC machine tool axis causes the contour error in the quadrants of circle and its compensation is relatively difficult. The paper shows origins, dependence on servo parameters and possibility of compensation of this error. The results were generated by computer simulation of electrical linear drive in Matlab � Simulink.

• Mendřický R.: The influence of backlash and stiffness on the characteristic of servodrive of nc machine tool axis, Elektrické pohony a výkonová elektronika EPVE 2002, FEI VUT in Brno, Brno, Czech Republic, 2002, ISBN 80-214-2246-7. The article deals with the elaboration of the simulation model of the servodrive with positional rotational motor of NC machine tool axis. Special attention is given to nonlinear elements and analysis of backlash, friction and stiffness and its influence on generation of non-linear oscillation.

• Manlig F., Urban P., Havlík R.: Modern methods of the design of simulation experiments and their optimalization, Vědecká

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pojednání/Wissenschaftliche Abhandlungen/Práce naukowe, Jubilejní sborník VIII/2002, Akademické koordinační středisko v Euroregionu Nisa, Liberec/Zittau/Jelenia Góra 2002, Liberec, Czech Republic, 2002, ISBN 80-7083-628-8. This paper summarized implemented computer simulation in of teaching and of manufacturing company.

• Kretschar G., Kolbe D., Manlig F.: Improving the quality of teaching of manufacturing systems the use of computer simulation, Vědecká pojednání/Wissenschaftliche Abhandlungen/Práce naukowe, Jubilejní sborník VIII/2002, Akademické koordinační středisko v Euroregionu Nisa, Liberec/Zittau/Jelenia Góra 2002, Liberec, Czech Republic, 2002, ISBN 80-7083-628-8. This paper summarized implemented computer simulation in of teaching and of manufacturing company.

• Manlig F.: Effective teaching of manufacturing systems with use computer, Strojírenská technologie, Czech Republic, 2002, ISSN 1211-4162. This paper summarized implemented computer simulation in of teaching and of dynamic manufacturing systems.

• Pokorný P., Pavlů J., Korner J.: Patern of Heat Distribution in PUR Mould, research report, Modelárna LIAZ, Liberec, Czech Republic, 2002. Rapid Tooling and a composit influence on the temperature distribution in mould.

• Pokorný P., Korner J.: Rapid prototyping, research report, TU of Liberec, Liberec, Czech Republic, 2002. Paterns and rapid prototyping by FDM method.

• Rach P., Pokorný P.: Conception of Machine Tool for Fast Manufacture of Large Paterns, research report, TU of Liberec, Liberec, Czech Republic, 2002. Conception of Machine Tool for Fast Manufacture of Large Paterns.

• Zelený P.: The design of universal 3D drive systém II, research report, TU of Liberec, Liberec, Czech Republic, 2002. This report is focused on design of 3D drive system from linear drive systems.

• Cerha J.: Flow Forces, research report, TU of Liberec, Liberec, Czech Republic, 2002. This report is focused on the flow forces generaly (steady-state flow force, damping length)

• Keller P.: The 2D non-contact measurement error analysis, research report, TU of Liberec, Liberec, Czech Republic, 2002. This report is focused on error analysis of 2d non-contact measurement by digital camera and theirs minimization.