期刊
INTERNATIONAL JOURNAL OF FATIGUE
卷 29, 期 4, 页码 748-757出版社
ELSEVIER SCI LTD
DOI: 10.1016/j.ijfatigue.2006.06.009
关键词
microplasticity; Poisson point process; Weibull model; multiaxial fatigue; thermal measurements
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. (c) 2006 Elsevier Ltd. All rights reserved.
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