Upload
buituyen
View
223
Download
0
Embed Size (px)
Citation preview
Coating structure effect on
stress formation
Composites Product Line
VTT Technical Research Centre of Finland
2 22/09/2014 2
Background
Paper rolls, valve spindles, piston rings, gear wheels
Sliding contact
Friction, wear, corrosion
Need for replacement/maintenance
Tackle the challenge with the aid of modelling
Increase understanding of the affecting phenomena
Reduce time from design table to market
Get lifetime estimations
Reduce R&D costs
Improved competitiveness in products and production
3 22/09/2014 3
Background - Modelling
Problem Experiments Conclusions,
case limited First
level
Second
level
Third
level
Fourth
level
Understanding
Theory
Modelling and
simulation Experiments Conclusions,
generic,
prediction
Conclusions,
generic
Characterization
Experiments
Conclusions,
case limited
Validation
Validation
4 22/09/2014 4
VTT ProperTune™
Computational modelling based material design
methodology and a portfolio of software modules that can
be integrated to solve specific material problems
Collection of material modelling tools applied,
incorporated and developed during the last 15 years
Technique to present in digital form industrial materials
and how they behave in real service conditions
Has been used to understand and optimise material
performance especially in the metal industry
Can be applied to a large variety of materials and surface
coatings
5 22/09/2014 5
Pin-on-disc experiment
Pin sliding on a disc
Development of macrolevel
stress during the experiment
Wear can be decreased by
applying a coating on the
material
6 22/09/2014 6
Real SEM and Image Analysis
Based Model
Scanning electron microscope
image of a coating structure
Image analysis model of the
coating structure
Complex structure of the coating affects the behaviour
7 22/09/2014 7
First Principal Stresses in a Composite
WC/CoCr Coating by Macro- and Micro FEM
Modelling
Change in the stress state when the actual
coating structure is taken into account
Development of custom,
safe to operate and high
performance composite
solutions
Tailor composite structures
for specific property-
performance requirements
and costs
8 22/09/2014 8
Advantages of VTT ProperTune™
Increase understanding of the
affecting phenomena
Reduce time-to-market for new
products typically by 50 %
Get lifetime estimations
Reduce R&D costs
Improved competitiveness in
products and production
TECHNOLOGY FOR BUSINESS