A new approach to characterizing and modeling the high cycle fatigue properties of cast materials based on self-heating measurements under cyclic loadings - Laboratoire brestois de mécanique et des systèmes Accéder directement au contenu
Article Dans Une Revue International Journal of Fatigue Année : 2013

A new approach to characterizing and modeling the high cycle fatigue properties of cast materials based on self-heating measurements under cyclic loadings

Anthony Ezanno
  • Fonction : Auteur
Cédric Doudard
MMA
Sylvain Calloch
MMA
Jean-Loup Heuzé
  • Fonction : Auteur

Résumé

The present paper proposes, a new model for high cycle fatigue of metallic cast materials (i.e., containing initial casting micro-flaws). This model is developed in a probabilistic two-scale framework taking into account the presence of a population of initial micro-flaws by an indirect approach. The proposed model not only accounts for the failure of samples under high cycle loadings, but also for the thermal effects during cycling in a unified theoretical framework. Thus, an ad hoc identification procedure, essentially based on self-heating tests under cyclic loadings, is proposed. The performance of the proposed model is estimated by comparing experimental and theoretical results in the case of classical fatigue tests on a cast copper-aluminum alloy. The results are very promising.

Dates et versions

hal-00785005 , version 1 (05-02-2013)

Identifiants

Citer

Anthony Ezanno, Cédric Doudard, Sylvain Calloch, Jean-Loup Heuzé. A new approach to characterizing and modeling the high cycle fatigue properties of cast materials based on self-heating measurements under cyclic loadings. International Journal of Fatigue, 2013, 47, pp.232-243. ⟨10.1016/j.ijfatigue.2012.09.005⟩. ⟨hal-00785005⟩
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