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Thermal Stress Relaxation of Nonhomogeneous Coatings
Author(s): 
Pages: 1353-1357
Year: Issue:  1
Journal: TSINGHUA SCIENCE AND TECHNOLOGY

Keyword:  nonhomogeneous coatingfinite elemen t methodmoire interferencegradient distribution;
Abstract: Nonhomogeneous coatings (NCs) are new type of engineering structures that is not yet fully understood. One important aspect in the mechanical analysis of NCs is to determine the gradient distribution that creates the maximum thermal stress relaxation. This paper employs numerical analysis using the finite element metho d and experimental analysis using moire interference to study the stress distrib ution in NCs. Attention focused on the edge effect stresses in the coating/subst rate structures and their dependence on the different gradient distributions of this new kind of composite structure.
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