Modified model for evaluating fatigue behaviors and lifetimes of notched aluminum-alloys at temperatures of 25 °C and −70 °C
作者： M.D. Liu , J.J. Xiong , J.Z. Liu , B.J. Tian
DOI: 10.1016/J.IJFATIGUE.2016.08.012
关键词: Spectral line 、 Aluminium 、 Composite material 、 Amplitude 、 Materials science 、 Constant (mathematics) 、 Structural engineering 、 Stress ratio
摘要: Abstract A new S - N R surface model accounting for the stress ratio effect is proposed to depict fatigue behavior, and a modified damage accumulative rule considering load interaction presented assess lifetimes under random spectra loading. Fatigue tests were performed on notched aluminum-alloys 2524-T3 7050-T7451 subjected constant amplitude loading at 25 °C room −70 °C cryogenic temperatures, load-environment mechanisms deduced from fractographic analysis. The shows good correlation with experimental results.
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