Stress Heterogeneity Effect on the Strength of Silicon Nitride |
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| Authors: | Franç ois Hild,Elisabeth Amer,Didier Marquis |
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| Affiliation: | Laboratoire de Mécanique et Technologie, E.N.S. Cachan/C.N.R.S./UniversitéParis 6, 94235 Cachan Cedex, France;Renault-Direction de la Recherche, 92109 Boulogne Billancourt, France |
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| Abstract: | The experiments reported in this paper demonstrate the causes of the failure of monolithic ceramics. The specimens are made of silicon nitride and tested at room temperature. The stress field within the specimen is different for each of four series of tests that have been conducted. Fractographic observations have also been made to identify the causes of the failures. A size effect analysis is performed. |
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| Keywords: | silicon nitride failure defects statistics stress |
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