Effects of static and cyclic fatigue at high temperature upon reaction bonded silicon nitride

Michel Boussuge (1) , Jacques Lamon

1 CDM - Centre des Matériaux

The effects of static fatigue and cyclic fatigue upon Reaction Bonded Silicon Nitride (RBSN) were compared using the statistical distributions of residual strengths measured in tension. The strength-controlling flaws are highly dependent upon frequency. It was found that low frequency cyclic and short-term static loadings blunted surface flaws, whereas high frequency cyclic fatigue affects internal flaw populations. This situation is attributed to oxidation related mechanisms.

Domaines: Articles anciens

Michel Boussuge, Jacques Lamon. Effects of static and cyclic fatigue at high temperature upon reaction bonded silicon nitride . Journal de Physique Colloques, 1986, 47 (C1), pp.C1-557-C1-562. ⟨10.1051/jphyscol:1986184⟩. ⟨jpa-00225615⟩