Journal
INTERNATIONAL JOURNAL OF SOLIDS AND STRUCTURES
Volume 44, Issue 16, Pages 5272-5288Publisher
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.ijsolstr.2006.12.035
Keywords
functionally graded material; coating; three-dimensional elasticity theory
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Funding
- Engineering and Physical Sciences Research Council [GR/A10031/01] Funding Source: researchfish
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The concept of functionally graded material (FGM) is actively explored in coating design for the purpose of eliminating the mismatch of material properties at the coating/substrate interface, typical for conventional coatings, which can lead to cracking, debonding and eventual functional failure of the coating. In this paper, an FGM coating/substrate system of finite thickness subjected to transverse loading is analysed within the context of three-dimensional elasticity theory. The Young's modulus of the coating is assumed to vary exponentially through the thickness, and the Poisson's ratio is assumed to be constant. A comparative study of FGM versus homogeneous coating is conducted, and the dependence of stress and displacement fields in the coating substrate/system on the type of coating, geometry and loading is examined and discussed. (c) 2007 Elsevier Ltd. All rights reserved.
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