Crack Propagation in Structural Ceramics Subjected to Thermal Stress
Final rept. 15 Nov 1975-31 Aug 1977,
LEHIGH UNIV BETHLEHEM PA
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This program was devoted to the thermal fatigue behavior and failure prediction of structural ceramics under thermal stress. The materials investigated include soda-lime-silica glass, silicon nitride, silicon carbide and alumina. Another phase of the program dealt with the self-fatigue in surface compression strengthened glass plates. That the strength of glass plates can be improved by introducing residual stresses into the material is well known. However, brittle glass strengthened in this manner appears to be susceptible to spontaneous fragmentation even during the complete absence of applied loads. The problem was analyzed from the fracture mechanics point of view.
- Ceramics, Refractories and Glass