Fracture analysis of functionally graded coatings: antiplane deformation

✍ Scribed by Gan-Yun Huang; Yue-Sheng Wang; Dietmar Gross

• Publisher: Elsevier Science
• Year: 2002
• Tongue: English
• Weight: 140 KB
• Volume: 21
• Category: Article
• ISSN: 0997-7538
• DOI: 10.1016/s0997-7538(02)01223-8

✦ Synopsis

A new model for approximate analysis of a functionally graded coating with arbitrary variation of properties has been developed. In this model, the coating is divided into several sublayers. In each sublayer the material properties vary in a linear manner along the thickness direction and the material properties are continuous at each subinterface. With this new model, the crack problem of a functionally graded coating bonded to a homogeneous half-plane under static antiplane shearing load is investigated. By using transfer matrix method and Fourier integral transform technique, the problem is reduced to the solution of a Cauchy singular integral equation. Stress intensity factors are calculated. Comparisons are made between the present model and other models. The results show some advantages of the present model.