NOTCH SENSITIVITY AND STRESS REDISTRIBUTION IN 3 CERAMIC-MATRIX COMPOSITES

被引：46
|
作者：
MACKIN, TJ
PURCELL, TE
HE, MY
EVANS, AG
机构：
[1] High Performance Composites Center, Materials Department, College of Engineering, University of California, Santa Barbara, California
[2] United Technologies, Jupiter, Florida
来源：
JOURNAL OF THE AMERICAN CERAMIC SOCIETY | 1995年 / 78卷 / 07期
关键词：
D O I：
10.1111/j.1151-2916.1995.tb08881.x
中图分类号：
TQ174 [陶瓷工业]; TB3 [工程材料学];
学科分类号：
0805 ; 080502 ;
摘要：
Fiber-reinforced ceramic-matrix composites (CMCs) depend upon inelastic mechanisms to diffuse stress concentrations associated with holes, notches, and cracks, These mechanisms consist of fiber debonding and pullout, multiple matrix cracking, and shear band formation. In order to understand these effects, experiments have been conducted on several double-edge-notched CMCs that exhibit different stress redistribution mechanisms, Stresses have been measured and mechanisms identified by using a combination of methods including X-ray imaging, edge replication, and thermoelastic analysis, Multiple matrix cracking was found to be the most effective stress redistribution mechanism.
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页码：1719 / 1728
页数：10
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