A numerical study on the application of the Weibull theory to brittle materials

被引：100

作者：

Fok, SL

Mitchell, BC

Smart, J ^{[1
]}

Marsden, BJ

机构：

[1] Univ Manchester, Manchester Sch Engn, Manchester M13 9PL, Lancs, England

[2] AEA Technol, Warrington WA3 6AT, Cheshire, England

来源：

ENGINEERING FRACTURE MECHANICS | 2001年 / 68卷 / 10期

基金：

英国工程与自然科学研究理事会;

关键词：

brittle materials; ceramics; Weibull theory;

D O I：

10.1016/S0013-7944(01)00022-4

中图分类号：

O3 [力学];

学科分类号：

08 ; 0801 ;

摘要：

In this paper, the effects of assuming that a brittle material can be modelled by the two-parameter Weibull distribution, if the true representation of the material behaviour is actually a three-parameter distribution, are examined. It is shown that if data from a material characterisation test is used to predict the failure of a component and the stressed surface areas are very different, then this can lead to major discrepancies in the predicted failure stress. It is also shown that if the three-parameter model is a true representation of the material behaviour, then the Weibull modulus for the two-parameter approximation will vary with surface area. (C) 2001 Elsevier Science Ltd. All rights reserved.

引用

页码：1171 / 1179

页数：9

共 13 条

[1]

[Anonymous], P ROYAL SWEDISH ACAD

[2] ON THE ESTIMATION OF THE WEIBULL MODULUS [J].