Validation of single-edge V-notch diametral compression fracture toughness test for porous alumina |
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Authors: | J. K. Clobes D. J. Green |
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Affiliation: | (1) Department of Materials Science and Engineering, The Pennsylvania State University, University Park, Pennsylvania 16802, USA |
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Abstract: | The objectives of this study were to validate a single-edge V-notch diametral compression fracture toughness technique for ceramics. Rounded notches and sharpened V-notches were introduced into porous, fine-grained alumina samples, and the fracture toughness results were compared. A theory linking the toughness of the material to the degree of densification fit the fracture toughness results well. The data for the V-notch samples were found to correlate very well with published results for porous alumina. The fracture toughness values were found to be independent of the specimen thickness or notch depth. |
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