Abstract
Numerical results are presented on subsurface stress distributions in bi-layer and graded multilayer coatings on monolithic substrates under plane strain contact conditions (cylinder on flat contact geometry). The case of a coating stiffer than the underlying substrate is considered, with a coating/substrate modulus ratio of 2.44, and a medium ‘generalized thickness’ t *= t ( f) / a=0.5. 4 4 t ( f) /is the absolute coating thickness and a the Hertzian contact half width in cylinder/flat (2D) contact Graded coatings (a stack of 10 individual layers) are considered with moduli progressively increasing from the coating/substrate interface towards the extreme coating surface; this way interface stress discontinuities can be eliminated and stress intensities reduced both in the substrate and in the coating.
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Disclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.