EVALUATION OF BRIDGING PARAMETERS IN ALUMINAS FROM R-CURVES BY USE OF THE FRACTURE-MECHANICAL WEIGHT FUNCTION

被引：43

作者：

FETT, T ^{[1
]}

MUNZ, D ^{[1
]}

THUN, G ^{[1
]}

BAHR, HA ^{[1
]}

机构：

[1] MAX PLANCK GESELL,ARBEITSGRP MECH HETEROGENER FESTKORPER,D-01069 DRESDEN,GERMANY

来源：

JOURNAL OF THE AMERICAN CERAMIC SOCIETY | 1995年 / 78卷 / 04期

关键词：

D O I：

10.1111/j.1151-2916.1995.tb08420.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：

Coarse-grained Al2O3 shows an R-curve behavior which is characterized by an increase in crack growth resistance with increasing crack extension. In case of alumina, this effect is caused by crack-border interactions in the wake of the advancing crack. In the first part of the paper, the weight function method for the determination of bridging stresses from controlled fracture tests is described. In the second part, this procedure is applied for the evaluation of our own experimental results as well as results available in the literature.

引用

页码：949 / 951

页数：3

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