Evans, A. G. and Faber, K. T. (1984) Crack-Growth Resistance of Microcracking Brittle Materials. Journal of the American Ceramic Society, 67 (4). pp. 255-260. ISSN 0002-7820. doi:10.1111/j.1151-2916.1984.tb18842.x. https://resolver.caltech.edu/CaltechAUTHORS:20140908-181331228
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Abstract
A mechanics model of microcrack toughening is presented. The model predicts the magnitude of microcrack toughening as well as the existence of R-curve effects. The toughening is predicated on both the elastic modulus diminution in the microcrack process zone and the dilatation induced by microcracking. The modulus effect is relatively small and process-zone-size-independent. The dilatational effect is potentially more substantial, as well as being the primary source of the R curve. The dilatational contribution is also zone-size-dependent. The analysis demonstrates that microcrack toughening is less potent than transformation toughening.
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| Additional Information: | © 1984 The American Ceramic Society. Received July 26. 1983; revised copy received November 28, 1983; approved December 6, 1983. Support for A. G. Evans was provided by the Office of Naval Research under Contract No. N00014-81-K-0362 and support for K. T. Faber was provided, in part, by the National Science Foundation under Grant No. DMR8305800. | |||||||||
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| Issue or Number: | 4 | |||||||||
| DOI: | 10.1111/j.1151-2916.1984.tb18842.x | |||||||||
| Record Number: | CaltechAUTHORS:20140908-181331228 | |||||||||
| Persistent URL: | https://resolver.caltech.edu/CaltechAUTHORS:20140908-181331228 | |||||||||
| Usage Policy: | No commercial reproduction, distribution, display or performance rights in this work are provided. | |||||||||
| ID Code: | 49457 | |||||||||
| Collection: | CaltechAUTHORS | |||||||||
| Deposited By: | George Porter | |||||||||
| Deposited On: | 11 Sep 2014 18:25 | |||||||||
| Last Modified: | 10 Nov 2021 18:44 |
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