Effect of Cavities on Creep
- 1 March 1983
- journal article
- Published by Wiley in Journal of the American Ceramic Society
- Vol. 66 (3) , C‐36
- https://doi.org/10.1111/j.1151-2916.1983.tb10026.x
Abstract
The formation of cavities during creep increases the creep rate as a result of the combined effects of the decrease in elastic modulus, which results in elastic creep, and the enhanced rate of the basic creep process caused by stress transfer. Analyses of these effects are presented for the special case of cavities in the form of cracks. The net rate of creep can be described by a total of four terms. Permanent crack‐opening displacement resulting from creep deformation of material adjacent to the cracks results in a permanent pore phase following unloading.Keywords
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