Trapped cracks at indentations
Autor: | Robert F. Cook, L. M. Braun |
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Rok vydání: | 1994 |
Předmět: | |
Zdroj: | Journal of Materials Science. 29:2192-2204 |
ISSN: | 1573-4803 0022-2461 |
Popis: | A fracture-mechanics model for indentation cracking in phase-transforming materials is developed, based on the competing interaction of the tensile residual-mismatch field and the compressive contact-induced transformation field. In addition to the usual subthreshold and well-developed cracking ranges, the model predicts the trapping of cracks at indentations, within the transformation zone. As an example, the model is used to describe the dependence of radial crack length on indentation load in a range of yttria-tetragonal zirconia polycrystals (Y-TZP), explicitly addressing the trapping behaviour observed in Part I (...) |
Databáze: | OpenAIRE |
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