Discrimination of multiaxiality criteria with the Brazilian disc test

被引：30

作者：

BrucknerFoit, A ^{[1
]}

Fett, T ^{[1
]}

Munz, D ^{[1
]}

Schirmer, K ^{[1
]}

机构：

[1] RES CTR KARLSRUHE,IMF 2,D-76021 KARLSRUHE,GERMANY

来源：

JOURNAL OF THE EUROPEAN CERAMIC SOCIETY | 1997年 / 17卷 / 05期

关键词：

D O I：

10.1016/S0955-2219(96)00085-4

中图分类号：

TQ174 [陶瓷工业]; TB3 [工程材料学];

学科分类号：

0805 [材料科学与工程]; 080502 [材料学];

摘要：

A fixture was developed which allows us to test circular discs of high strength ceramic materials under diametral compression. This so-called Brazilian disc test can be used to determine the failure behaviour of natural flaws contained in ceramic materials under multiaxial loading, as a stress state with both negative and positive principal stresses is induced in a disc during the test. The results of the test series performed with low and high strength ceramics are analysed using the multiaxial Weibull theory. Comparison of the Weibull distributions of the fracture stresses obtained with the Brazilian disc test and the outcome of the other test series clearly shows that a shear-insensitive failure criterion is more suitable to determine the critical flaw size under mixed mode loading than a shear-sensitive criterion. (C) 1997 Elsevier Science Limited. All rights reserved.

引用

页码：689 / 696

页数：8

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