Influence of the Nonsingular Stress Terms on Small‐Scale Supercritical Transformation Toughness
作者:
Antonios E. Giannakopoulos,
Mårten Olsson,
期刊:
Journal of the American Ceramic Society
(WILEY Available online 1992)
卷期:
Volume 75,
issue 10
页码: 2761-2764
ISSN:0002-7820
年代: 1992
DOI:10.1111/j.1151-2916.1992.tb05501.x
出版商: Blackwell Publishing Ltd
数据来源: WILEY
摘要:
In the present paper we examine the influence of the secondorder term of the asympotic stress solution for mode‐I, steady‐state, plane‐strain, quasi‐static crack growth in a supercritically trasforming material. It was found that the second‐order term can affect the toughness, not always in a positive way. The second‐order term includes the effects of the loading, of the overall geometry, and of the crack length. The findings can be used for the evaluation of the purely material resistance curves of small‐scale transforming ceramics, as well as for the toughness predictions of these materials. The results may be useful for unifying different test results, and for a better understanding of the strength‐tou
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