Abstract
A structural ceramic analysis and reliability evaluation code has recently been developed encompassing volume and surface flaw induced fracture, modeled by the two‐parameter Weibull probability density function. A segment of the software involves computing the Weibull polydimensional stress state crack density coefficient from uniaxial stress experimental fracture data. The relationship of the polydimensional stress coefficient is derived herein for a shear‐insensitive material with a random surface flaw population. In addition, a critique is made on the derivation of this relationship by Ikeda and Igaki, which appeared in a recent article in the Journal of the American Ceramic Society.
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