Identification of the scatter in high cycle fatigue from temperature measurements

Cédric Doudard (1) , Sylvain Calloch (1) , François Hild (1) , Philippe Cugy (2) , André Galtier (2)

1 LMT - Laboratoire de Mécanique et Technologie
2 IRSID - IRSID

It is proposed to determine the scatter in a Wöhler diagram by analyzing temperature changes induced by microplasticity. A unified framework is introduced to study both phenomena. The identification procedure is applied to a dual-phase steel.

Mots clés: Fatigue; Microplasticity; Poisson point process; Weibull model

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

Cédric Doudard, Sylvain Calloch, François Hild, Philippe Cugy, André Galtier. Identification of the scatter in high cycle fatigue from temperature measurements. Comptes Rendus Mécanique, 2004, 332, pp.795-801. ⟨10.1016/j.crme.2004.06.002⟩. ⟨hal-00002927⟩