Comparative analysis of fracture toughness test methods for ceramics and crystals at room and lower temperatures |
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Authors: | G A Gogotsi V I Galenko |
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Affiliation: | (1) Institute for Problems of Strength, National Academy of Sciences of Ukraine, Kyiv, Ukraine |
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Abstract: | Flexural and indentation tests to estimate the fracture toughness of ceramics and crystals were compared. It was demonstrated
that different methods can give reliable estimates in tests of homogeneous ceramics and quite ambiguous in tests of nonhomogeneous
materials. Zirconia ceramics partially stabilized with magnesia were shown to exhibit a low-temperature inelastic-elastic
transition in the temperature range of their fracture toughness variations.
Translated from Problemy Prochnosti, No. 3, pp. 104–118, May–June, 1997. |
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