Effect of a Microheterogeneous Structure on the Fracture Toughness of Glasses
- 1 May 1980
- journal article
- Published by Wiley in Journal of the American Ceramic Society
- Vol. 63 (5-6) , 286-288
- https://doi.org/10.1111/j.1151-2916.1980.tb10721.x
Abstract
A model is presented that describes the variation of the critical stress intensity factor,Kk., of glasses as a function of composition. It is based on a microheterogeneous structure that produces nonannealable stresses in the material. The effect of these internal stresses on the measured values ofKICis expressed as a function of the mechanical and thermal parameters of the material. Application to several borosilicate glasses is presented and discussed.Keywords
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