CRACK-TIP-BRIDGING STRESSES IN CERAMIC MATERIALS

被引：55

作者：

HU, XZ

LUTZ, EH

SWAIN, MV

机构：

[1] Advanced Materials Technology Center, Mechanical Engineering Department, University of Sydney, New South Wales

来源：

JOURNAL OF THE AMERICAN CERAMIC SOCIETY | 1991年 / 74卷 / 08期

关键词：

CRACK TIP; BRIDGING; STRESS; CALCULATIONS; TOUGHNESS;

D O I：

10.1111/j.1151-2916.1991.tb07795.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：

A simple approach is presented for the determination of crack-tip-bridging stresses in ceramic materials. The technique utilizes the difference in compliance predicted for a crack of known size and that measured. The bridging stresses for an alumina material that displays considerable R-curve behavior are calculated from measured compliance and crack-length observations. The results are almost identical with those recently reported in the literature. Additional measurements on a more complex "duplex" ceramic that exhibits a very substantial R-curve due to a crack-branching chain reaction are also presented.

引用

页码：1828 / 1832

页数：5

共 27 条

[21] INCREASE OF CRACK RESISTANCE DURING SLOW CRACK-GROWTH IN AL2O3 BEND SPECIMENS [J].