THE ROLE OF ELASTIC PROPERTY MISMATCH IN THE FAILURE OF CERAMIC COMPOSITES

被引:9
作者
HUANG, JL
LIN, CJ
机构
[1] Department of Materials Engineering, National Cheng-Kung University, Tainan
关键词
D O I
10.1007/BF00400895
中图分类号
T [工业技术];
学科分类号
08 ;
摘要
Numerical analysis was undertaken to simulate a modification of the normalized stress-intensity factor applicable when the crack tip is in the vicinity of an interface separating materials of differing elastic properties. It is predicted that when the initial crack is subcritically extended to the interface, the strength of the sample is greater than if the failure occurred from the initial crack, without arrest at the interface. The fracture behaviour of microcracking on a polished WC/Si3N4 sample was examined. Crack branching, deviation and arrest were observed to depend on the instantly released energy.
引用
收藏
页码:1074 / 1080
页数:7
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