The fracture analysis of a graded coating/substrate system of finite thickness with arbitrary spatial variations of coating properties: Plane deformation

被引：8
|
作者：
Wang, YS
Huang, GY
Gross, D
机构：
[1] No Jiaotong Univ, Inst Engn Mech, Beijing 100044, Peoples R China
[2] Tsing Hua Univ, Dept Engn Mech, Beijing 100081, Peoples R China
[3] Tech Univ Darmstadt, Inst Mech, D-64289 Darmstadt, Germany
来源：
ENGINEERING FRACTURE MECHANICS | 2005年 / 72卷 / 12期
关键词：
fracture; crack; functionally graded material; coating; stress intensity factor;
D O I：
10.1016/j.engfracmech.2004.09.012
中图分类号：
O3 [力学];
学科分类号：
08 ; 0801 ;
摘要：
A new multi-layered model for functionally graded materials (FGMs) with continuously varying elastic properties is developed. The model divides the FGM into multiple layers. In each layer the material properties vary linearly and are continuous on the sub-interfaces. With this new multi-layered model, we solve the crack problems of an FGM coated strip under the in-plane deformation. The method employs the Fourier integral transform technique and singular integral equation theory. The stress intensity factors are calculated. Comparisons between the present model and other existing models show some advantages of the new model: (i) it involves no discontinuities of the material properties at the sub-interfaces; and (ii) it can be used to analyze the crack problems of FGMs with properties of arbitrary variations. (c) 2005 Elsevier Ltd. All rights reserved.
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页码：1942 / 1953
页数：12
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