PERIODIC CRACKING OF FUNCTIONALLY GRADED COATINGS

被引：89

作者：

ERDOGAN, F

OZTURK, M

机构：

[1] Department of Mechanical Engineering and Mechanics, Lehigh University, Bethlehem

来源：

INTERNATIONAL JOURNAL OF ENGINEERING SCIENCE | 1995年 / 33卷 / 15期

基金：

美国国家科学基金会;

关键词：

D O I：

10.1016/0020-7225(95)00065-6

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

The antiplane elasticity problem for a functionally; graded coating bonded to a homogeneous half space is considered, The coating is assumed to contain periodic cracks perpendicular to the surface. The problem is formulated in terms of an integral equation with strongly singular kernels. Three dimensionless parameters representing the crack depth, the material nonhomogeneity and the crack periodicity are identified. In addition to the mode III stress intensity factor calculated by varying these three parameters, the results presented include a qualitative discussion of the question of fracture instability, the effect of periodic cracking on the relaxation of stresses on the coating surface, and the comparison of the total strain energy released as a result of surface cracking with that assumed in a simple stress relaxation model.

引用

页码：2179 / 2195

页数：17

共 22 条

[11] ON THE SOLUTION OF INTEGRAL-EQUATIONS WITH A GENERALIZED CAUCHY KERNEL [J].