JSME International Journal Series A Solid Mechanics and Material Engineering
Online ISSN : 1347-5363
Print ISSN : 1344-7912
ISSN-L : 1344-7912
An Analysis of Weibull Distribution for Residual and Fracture Strength after Proof Testing of Ceramics
Taketoshi NOJIMA
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1999 Volume 42 Issue 3 Pages 414-420

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Abstract

By assuming that the crack velosity a can be expressed as a power function of the stress intensity K1, a∝Kn1, the degradation of strength during proof test of ceramic materials was analyzed, and Weibull distributions both for residual strength Sr and fracture strength σF after proof testing were analytically formulated. The analytical results show that Weibull curve for the Sr has a slope of about n-2 at low failure probability levels(n;the proof test environments), and also show that the corresponding Weibull curve for the σF has a slope of about(n-2)(N+1)/(N-2)(N;the fracture test environments).

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