CRACK INITIATION IN UNIDIRECTIONAL BRITTLE-MATRIX COMPOSITES

被引：112

作者：

KIM, RY ^{[1
]}

PAGANO, NJ ^{[1
]}

机构：

[1] USAF,WRIGHT LAB,MAT DIRECTORATE,WRIGHT PATTERSON AFB,OH 45433

来源：

JOURNAL OF THE AMERICAN CERAMIC SOCIETY | 1991年 / 74卷 / 05期

关键词：

CRACKS; COMPOSITES; FIBERS; MATRIX; ACOUSTIC EMISSION;

D O I：

10.1111/j.1151-2916.1991.tb04346.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：

This paper describes the initiation of matrix cracking for glass and glass-ceramic matrix composites reinforced with small-diameter silicon carbide and carbon fibers under uniaxial tensile loading. Acoustic emission, replication, and optical microscopy in conjunction with stress-strain curves are employed to detect the initiation of matrix cracking. The proportional limit of the stress-strain curve is found to overestimate the initiation of matrix cracking in the material systems studied. The matrix cracking initiates at axial strains from 0.07% to 0.15%. The ACK model overestimates the initiation of the matrix cracking for the material systems studied in this paper.

引用

页码：1082 / 1090

页数：9