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Guian Qian Chengen Zhou Youshi Hong

Abstract

The influence of environmental medias on crack propagation of a structural steel at high and very high-cycle fatigue (VHCF) regimes is investigated based on the fatigue tests performed in air, water and 3.5% NaCl aqueous solution. Crack propagation mechanisms due to different crack driving forces are investigated in terms of fracture mechanics. A model is proposed to study the relationship between fatigue life, applied stress and material property in different environmental medias, which reflects the variation of fatigue life with the applied stress, grain size, inclusion size and material yield stress in high cycle and VHCF regimes. The model prediction is in good agreement with experimental observations.

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    Section
    Miscellanea

    How to Cite

    Qian, G., Zhou, C. and Hong, Y. (2013) “Crack propagation mechanism and life prediction for very-highcycle fatigue of a structural steel in different environmental medias”, Frattura ed Integrità Strutturale, 7(25), pp. Pages 7–14. doi: 10.3221/IGF-ESIS.25.02.

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