Fracture analysis on the coating crack perpendicular to the interface of bi-material

被引：0
|
作者：
Su, B. [1 ]
Li, Ch. [1 ]
机构：
[1] Laboratory of Materials' Properties, Beijing Inst. of Aero. Materials, PO Box 81-23, Beijing 100095, China
来源：
Key Engineering Materials | 2000年 / 183卷
关键词：
Crack propagation - Finite element method - Interfaces (materials) - Mechanical properties - Stress intensity factors;
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学科分类号：
摘要：
The objectives of this paper are to study the fracture properties of a coating structure through analysis on the stress intensity factor of a coating crack perpendicular to the interface between the coating-material and the base-material, and arrested in the base-material. The weight function of the coating crack is given and the coefficients of the weight functions are determined. Using this weight function and the finite element method, the analytical expression of the stress intensity factors for the crack is given, and a good agreement between the calculated stress intensity factors by the weight function method and that by the finite element method is reached. The influences of the materials' properties and the geometrical dimensions on the stress intensity factors are analyzed and discussed.
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