Crack propagation mechanism and life prediction for very-highcycle fatigue of a structural steel in different environmental medias
作者： Guian Qian , Chengen Zhou , Youshi Hong
关键词: Fatigue testing 、 Fracture mechanics 、 Stress intensity factor 、 Crack closure 、 Grain size 、 Model prediction 、 Structural engineering 、 Stress concentration 、 Stress (mechanics) 、 Materials science 、 Mechanical engineering 、 Mechanics of Materials
摘要: The influence of environmental medias on crack propagation a structural steel at high and veryhigh- cycle fatigue (VHCF) regimes is investigated based the tests performed in air, water 3.5% NaCl aqueous solution. Crack mechanisms due to different driving forces are terms fracture mechanics. A model proposed study relationship between life, applied stress material property medias, which reflects variation life with stress, grain size, inclusion size yield VHCF regimes. prediction good agreement experimental observations.
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