Exposicion Material Propertiesgrupo.b

7/26/2019 Exposicion Material Propertiesgrupo.b

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Members of group

JUAN HONORI CHURA

JHON PILCOMAMANI CAXI

ANGEL QUISPE JIMENEZ

ALFREDO MAMANI PERCA

MATERIAL

PROPERTIES



OVER WIELL

This property is most commonly usedmaterials when the materials areexposed to a force of traction andcompression, we see also nowled!eof the properties of the materialsused is of fundamental importance inen!ineerin!" The imperfect nowled!e

of the possi#ilities and limitations ofmaterials can chan!e si!ni$cantly, #utdid not return to the ori!inal %is wayis the elasticity"



A. Tensile

stren!th anddeformation



TE&SILE STRE&'T% A&(

(E)ORMATIO& When materials are exposed to forces, such as

tension (stretching forces ) and compression(crushing forces ), the deform! that is, the

change shape. "he tpe of deformation depends on the tpe of

force that is applied.



A #od is su#$ected to compression if the appliedforces tend to crush it.

*ompressio

n



Extensi%n or elongation

"his is called extension or elon!ation.



&.! Elasticityand

plasticity

+" ELASTI*I(A( - PLASTI*I(A(



ELASTI*IT-

ELASTI*ALL-(E)ORME(

Ru##er is an example of a'er elastic material! itcan #e

It is a considera#lede!ree"

If a material has 'er loelasticit, and is strong,engineers sa it is sti.

)RA*T.RES

(#rea*s, due to tension)'er easil. +lass is anexample of a #rittlematerial.



PLASTI*IT-

A material that can #eplastically deformed #hammering or rolling.

MALLEA+LE

A material that can #edran out (stretched).



*" STA'ES I& ELASTI* A&(

PLASTI* (E)ORMATIO&



PROPORTIO&AL

LIMIT O)

PROPORTIO&ALIT-

to the increase in tension

&eond this point, length#egins to increase at aslightl greater rate thantension.

ELASTI* LIMIT&eond this point, the #arill no longer return to itsoriginal length.

For example, when tension increases by10%, length increases by 10%.



-IEL( POI&T

.LTIMATE TE&SILE

STRE&'T% /.TS0

&eond this point, awaist (a narroer

section))RA*T.RE POI&T here the #ar #rea*s in

to.

Once it yields, it continues toincrease in length, e'en ithout afurther Increase in tension.



1" compression compresi2n

3" tension 4 tension

5" deform 4 deformar , deforma#le

6" extension 4 extensi2n

7" tensile stren!th 4 resistencia a la tracci2n

8O*A+.LAR-



1" compression

3" tension 4

5" deform 4

6" extension 4

7" tensile stren!th 4

8O*A+.LAR-



LET9S PRA*TI*EPART A4

1:"1 *omplete the sentences usin! the words in the #ox" -ou

will need to use one word twice" Loo at A opposite to help you" compression deformation elon!ation extension tensi2n A stretching force is called /////// Tension.0 A crushing force is called /////// *ompression.1 Extension is also called /////// Elon!ation.2 "ension causes /// Elon!ation or Extension3 "ension or compression cause ./// (eformation // .



LET9S PRA*TI*EPART A4

1:"1 *omplete the sentences usin! the words in the #ox" -ou

will need to use one word twice" Loo at A opposite to help you" compression deformation elon!ation extension tensi2n A stretching force is called ......... .............. .0 A crushing force is called .................. .1 Extension is also called ..... ................ .2 "ension causes ................... or .........................3 "ension or compression cause ................................ .



1" Elasticity Elasticidad

3" Elastic 4 El;stica

5" +rittle 4 )r;!il

6" )racturas 4 )racturas

7" Plastic 4 Pl;stico

<" Plasticity 4 Plasticidad

=" Plastically deformed 4 (eformada pl;sticamente

:" Mallea#le 4 Malea#le

8O*A+.LAR-



1" Elasticity

3" Elastic 4

5" +rittle 4

6" )racturas 4

7" Plastic 4

<" Plasticity 4

=" Plastically deformed 4

:" Mallea#le 4

8O*A+.LAR-



LET9S PRA*TI*EPART +4

1 :"3 Match the two parts to mae correct sentences" Loo at +

and * opposite to help you"

If a material is sti44444444444444./*00 If a material is #rittle4444444444444./+01 If a material is plastic4444444444444/A02 If a material ields44444444444444./)0

3 If a material fractures444444444444.../E05 If a material is elasticall deformed444444./(0 a.! it is mallea#le and6or ductile.#.! it has lo elasticit and lo tensile strength.c.! it has lo elasticit and high tensile strength.d.! it has #een extended to a point #efore its elastic limit.e.! it has #een loaded #eond its ultimate tensile strength.f.! it has #een signi7cantl plasticall deformed, #ut not #ro*en.



LET9S PRA*TI*EPART +4

1 :"3 Match the two parts to mae correct sentences" Loo at +

and * opposite to help you"

If a material is sti 0 If a material is #rittle1 If a material is plastic2 If a material ields3 If a material fractures5 If a material is elasticall deformed a.! it is mallea#le and6or ductile.#.! it has lo elasticit and lo tensile strength.c.! it has lo elasticit and high tensile strength.d.! it has #een extended to a point #efore its elastic limit.e.! it has #een loaded #eond its ultimate tensile strength.f.! it has #een signi7cantl plasticall deformed, #ut not #ro*en.



1" Proportional 4 Proporcional

3" Limit 4 L>mite

5" Proportionality 4 Proporcionalidad

6" Elastic limit 4 L>mite el;stico

7" -ield point 4 L>mite de elasticidad

<" .ltimate tensile stren!th 4 Resistencia a la tracci2n

=" )racture point 4 Punto de fractura

8O*A+.LAR-



1" Proportional 4

3" Limit 4

5" Proportionality 4

6" Elastic limit 4

7" -ield point 4

<" .ltimate tensile stren!th 4

=" )racture point 4

8O*A+.LAR-



1:"5 *omplete the ma!a?ine article a#out sprin!s usin! wordsfrom A, + and * opposite"

8o are the springs used in car suspension made spring9 It sounds li*e asill :uestion, #ut thin* a#out it for a moment. In order for a spring tocompress or extend, then return to its original shape, it must #e ().......ELASTI*.................. . &ut springs are made from ire, and ire is made from 'er (0)

...........(.*TILE.............. metal (often cold dran car#on steel). When theire is manufactured, it is not onl stretched #eond its (1) ........ELASTI* LIMIT....... ! meaning it ill no longer return to its original length! #ut also#eond its(2) ................. -IEL( POI&T......... , here signi7cant, irre'ersi#le(3) ......E@TE&SIO&................ occurs.

"he metal from hich springs are made has therefore #een (5)............PLASTI*ALL- ......... deformed and, conse:uentl, needs to ha'e itsspringiness put #ac*.

"o do this, once a spring has #een formed into a coil, it is tempered! aprocess in hich it is heated and *ept at a high temperature for a

sustained period. "his ;resets; the atomic structure of the metal (partl, atleast), so that after tempering, the spring ill #eha'e as it should ! it can

LET9S PRA*TI*E PART*4



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Exposicion Material Propertiesgrupo.b