A rapid scatter prediction method for very high cycle fatigue

Abstract : VHCF tests are often performed by a high frequency fatigue test system, such as ultrasonic fatigue test machine. In the article, simple VHCF tests and cumulative fatigue (LCF plus VHCF) tests are performed to investigate the fatigue behavior respectively for a low carbon manganese steel. The test results in Wöhler diagram show a large scatter in VHCF regime. Continuum Damage Mechanics model is extended to VHCF region to estimate the remaining fatigue life. A rapid fatigue failure probability prediction method is applied and extended to VHCF regime in order to evaluate the fatigue dispersion based on multi scales model and fatigue dissipation analysis.
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Zhi Yong Huang, Qing Yuan Wang, Danièle Wagner, Claude Bathias, Jean Louis Chaboche. A rapid scatter prediction method for very high cycle fatigue. Fatigue & Fracture of Engineering Materials & Structures, Wiley-Blackwell, 2013, 36 (5), pp.462-468. ⟨10.1111/ffe.12021⟩. ⟨hal-01686407⟩



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