Cohesive failure of multilayer composite films

被引：0
|
作者：
Gutkin, MY [1 ]
Ovid'ko, IA [1 ]
Romanov, AE [1 ]
Sheinerman, AG [1 ]
机构：
[1] Russian Acad Sci, Inst Problems Mech Engn, St Petersburg 199178, Russia
来源：
FOURTH INTERNATIONAL WORKSHOP ON NONDESTRUCTIVE TESTING AND COMPUTER SIMULATIONS IN SCIENCE AND ENGINEERING | 2001年 / 4348卷
关键词：
D O I：
10.1117/12.417664
中图分类号：
TP301 [理论、方法];
学科分类号：
081202 ;
摘要：
A theoretical model is proposed for the cohesive failure of multilayer composite systems. A general formula is derived which relates values of structural and geometrical parameters at which crack generation is energetically favourable in such composite systems. For one-layer film/substrate systems, the critical thickness is found above which the cohesive fracture of films is energetically favourable. Nucleation of an intermediate layer due to diffusion across a film/substrate interphase boundary is considered. It is shown that the generation and the growth of the diffusion layer may result in the spontaneous cracking of the film.
引用
收藏
页码：297 / 303
页数：7
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