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

K. Duan; Y. W. Mai; B. Cotterell

doi:10.1007/BF00375239

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

K. Duan, Y. W. Mai, B. Cotterell

Research output: Journal article publication › Journal article › Academic research › peer-review

18 Citations (Scopus)

Abstract

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 Al₂O₃/ZrO₂ ceramic and experimental datA. Unlike the conventional two-parameter Weibull approach, this new analysis is able to predict the non-linearity observed in the lnln 1/(1-P_f) versus In σ_f strength distribution curve. Compared to the untoughened Griffith material, the R-curve material has higher strength and better strength reliability.

Original language	English
Pages (from-to)	1405-1408
Number of pages	4
Journal	Journal of Materials Science
Volume	30
Issue number	6
DOIs	https://doi.org/10.1007/BF00375239
Publication status	Published - Jan 1995
Externally published	Yes

ASJC Scopus subject areas

Ceramics and Composites
Materials Science (miscellaneous)
General Materials Science
Mechanics of Materials
Mechanical Engineering
Polymers and Plastics

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10.1007/BF00375239

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abstract = "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 Al2O3/ZrO2 ceramic and experimental datA. Unlike the conventional two-parameter Weibull approach, this new analysis is able to predict the non-linearity observed in the lnln 1/(1-Pf) versus In σf strength distribution curve. Compared to the untoughened Griffith material, the R-curve material has higher strength and better strength reliability.",

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AU - Mai, Y. W.

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N2 - 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 Al2O3/ZrO2 ceramic and experimental datA. Unlike the conventional two-parameter Weibull approach, this new analysis is able to predict the non-linearity observed in the lnln 1/(1-Pf) versus In σf strength distribution curve. Compared to the untoughened Griffith material, the R-curve material has higher strength and better strength reliability.

AB - 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 Al2O3/ZrO2 ceramic and experimental datA. Unlike the conventional two-parameter Weibull approach, this new analysis is able to predict the non-linearity observed in the lnln 1/(1-Pf) versus In σf strength distribution curve. Compared to the untoughened Griffith material, the R-curve material has higher strength and better strength reliability.

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

Abstract

ASJC Scopus subject areas

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