Stress Heterogeneity Effect on the Strength of Silicon Nitride

François Hild (1) , Elisabeth Amar (1) , Didier Marquis (1)

1 LMT - Laboratoire de Mécanique et Technologie

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.

Domaines: Mécanique des matériaux [physics.class-ph]

François Hild, Elisabeth Amar, Didier Marquis. Stress Heterogeneity Effect on the Strength of Silicon Nitride. Journal of the American Ceramic Society, 1992, 75 (3), pp.700-702. ⟨10.1111/j.1151-2916.1992.tb07861.x⟩. ⟨hal-01635993⟩