Strain fields and damage around notches in ceramic-matrix composites

被引：21
|
作者：
Mackin, TJ
Perry, KE
Epstein, JS
Cady, C
Evans, AG
机构：
[1] EG&G IDAHO INC,IDAHO NATL ENGN LAB,IDAHO FALLS,ID 83415
[2] UNIV CALIF SANTA BARBARA,DEPT MAT,SANTA BARBARA,CA 93106
来源：
JOURNAL OF THE AMERICAN CERAMIC SOCIETY | 1996年 / 79卷 / 01期
关键词：
D O I：
10.1111/j.1151-2916.1996.tb07881.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：
Strain development in several notched ceramic-matrix composites (CMCs) has been monitored over a broad range of load. This was achieved by using phase-shifting moire interferometry, which provides a map of the surface strains. A sequence of fringe patterns was used to chart the evolution of strain redistribution as a function of load. The ensuing strains were related to the micromechanical damage mechanisms. Stress concentrations were estimated from the strains by using stress/strain curves. Implications for the notch sensitivity of CMCs are discussed.
引用
收藏
页码：65 / 73
页数：9
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