Grain‐Size Dependence of Fracture Energy in Ceramics
- 1 January 1982
- journal article
- Published by Wiley in Journal of the American Ceramic Society
- Vol. 65 (1) , C‐14-C‐16
Abstract
A simple model incorporating thermal elastic anisotropy stresses is used to calculate the microcrack zone size around cracks in Al 2 O 3 . It is found that the ratio of microcrack zone size to grain size is almost constant for notched beam tests, but increases with grain size for double cantilever beam data. It is suggested that notched‐beam ratios of fracture toughness are related to crack initiation, whereas double cantilever beam values are related to propagation and reflect R‐curve behavior of the material.Keywords
This publication has 17 references indexed in Scilit:
- A Critical Evaluation of Indentation Techniques for Measuring Fracture Toughness: II, Strength MethodJournal of the American Ceramic Society, 1981
- Grain‐Size Dependence of Fracture Energy in Ceramics: II, A Model for Noncubic MaterialsJournal of the American Ceramic Society, 1981
- Grain‐Size Dependence of Fracture Energy in Ceramics: I, ExperimentJournal of the American Ceramic Society, 1981
- A Treatment of Inelastic Deformation Around a Crack Tip due to MicrocrackingJournal of the American Ceramic Society, 1980
- Microfracture from thermal expansion anisotropy—I. Single phase systemsActa Metallurgica, 1978
- Cause of the Discrepancy Resulting from Testing Methods in the Relation of Grain Size and Fracture Energy in Al 2 O 3Journal of the American Ceramic Society, 1975
- Discrepancy Arising from Measurement of Grain–Size Dependence of Fracture Energy of Al 2 O 3Journal of the American Ceramic Society, 1973
- Effect of Microstructure on Measurements of Fracture Energy of Al 2 O 3Journal of the American Ceramic Society, 1973
- Factor Analysis of Fracture-Toughness Test Parameters for Al2O3Journal of the American Ceramic Society, 1971
- Observations and mechanisms of fracture in polycrystalline aluminaEngineering Fracture Mechanics, 1969