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R-curve effect on strength and reliability of toughened ceramic materials

โœ Scribed by K. Duan; Y. -W. Mai; B. Cotterell

Publisher
Springer
Year
1995
Tongue
English
Weight
410 KB
Volume
30
Category
Article
ISSN
0022-2461

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โœฆ Synopsis

An improved theoretical analysis is presented for the strength and mechanical reliability of ceramic materials with an R-curve characteristic. There is good agreement between the predicted flexural strength distribution of an AI2OJZr02 ceramic and experimental data. Unlike the conventional two-parameter Weibull approach, this new analysis is able to predict the non-linearity observed in the Inln 1/(1-Pf) versus In of strength distribution curve. Compared to the untoughened Griffith material, the R-curve material has higher strength and better strength reliability.

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