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A method for evaluating the time-dependent failure characteristics of brittle materials — and its application to polycrystalline alumina

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Abstract

A simple method for evaluating stress intensity factor, crack velocity (K, V) diagrams is described. The method is evaluated for the glass/water system and is shown to generate data that are entirely consistent with data obtained on the same system using other techniques. The method is applied to the alumina/water system and the K, V diagrams are used to predict times to failure (Ψ) and effects of strain-rate on strength (σ f). The calculated Ψ and σ f, are in excellent agreement with available data.

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Authors and Affiliations

  1. Materials Department, School of Engineering and Applied Science, University of California, Los Angeles, California, USA

    A. G. Evans

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  1. A. G. Evans
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Evans, A.G. A method for evaluating the time-dependent failure characteristics of brittle materials — and its application to polycrystalline alumina. J Mater Sci 7, 1137–1146 (1972). https://doi.org/10.1007/BF00550196

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  • DOI: https://doi.org/10.1007/BF00550196

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