Micromechanics of Damage Accumulation in a 2.5D Woven C-Fiber/SiC Ceramic Composite

被引：0
|
作者：
N. Jekabsons
J. Varna
机构：
[1] University of Technology,Div. of Polymer Engineering, Luleå
来源：
Mechanics of Composite Materials | 2001年 / 37卷
关键词：
ceramic composite; SiC; damage; microdamage; tensile test; micromechanics;
D O I：
暂无
中图分类号：
学科分类号：
摘要：
The morphology of a C/PyC/SiC ceramic composite is studied and its microdamage mechanisms are revealed. Some models based on the micromechanical fracture mechanics are proposed to describe the possible damage processes. The influence of the observed microdamage on the stiffness reduction is studied. It is shown that the delamination between the layers and the cracks in the coating alone cannot explain the stiffness reduction observed in tests. Debonding between the SiC coating and pyrocarbon is suggested as another mechanism of the stiffness reduction.
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页码：289 / 298
页数：9
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