A Caltech Library Service

On the Crack Growth Resistance of Microcracking Brittle Materials

Evans, A. G. and Faber, K. T. (1984) On the Crack Growth Resistance of Microcracking Brittle Materials. In: Fracture in Ceramic Materials: Toughening Mechanisms, Machining Damage, Shock. Noyes Publications , Park Ridge, NJ, pp. 109-136. ISBN 9780815510055.

Full text is not posted in this repository.

Use this Persistent URL to link to this item:


A mechanics model of microcrack toughening has been 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, by virtue of the damaging effect of microcracks on the material ahead of the crack.

Item Type:Book Section
Faber, K. T.0000-0001-6585-2536
Additional Information:© 1984 Noyes Publications.
Record Number:CaltechAUTHORS:20210114-141918270
Persistent URL:
Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:107483
Deposited By: Tony Diaz
Deposited On:14 Jan 2021 22:22
Last Modified:14 Jan 2021 22:22

Repository Staff Only: item control page