DETERMINATION OF AN HCF CRITERION BY THERMAL MEASUREMENTS UNDER BIAXIAL CYCLIC LOADING

Abstract : A probabilistic two-scale model was recently developed to describe high-cycle fatigue (HCF) properties of steels associated with an identification method of the scatter based on thermal measurements. Up to now, this theoretical framework was used for uniaxial load histories. It is proposed to modify the probabilistic two-scale model to account for the effect of a multiaxial and proportional load histories on HCF properties. This modification consists in the introduction of an equivalent activation stress in the process controlling the plasticity kinetics. Thermal measurements are performed under biaxial tension-compression load histories to identify and validate an HCF criterion.
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Submitted on : Tuesday, September 16, 2008 - 11:53:04 PM
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Cédric Doudard, Martin Poncelet, Sylvain Calloch, Christine Boué, François Hild, et al.. DETERMINATION OF AN HCF CRITERION BY THERMAL MEASUREMENTS UNDER BIAXIAL CYCLIC LOADING. International Journal of Fatigue, Elsevier, 2007, 29, pp.748-757. ⟨10.1016/j.ijfatigue.2006.06.009⟩. ⟨hal-00322198⟩

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