Abstract
Due to being composed of different materials, Aluminum-CFRP hybrid (riveted/bonded) joints (HJs) exhibit different fatigue failure modes under different loading and environmental conditions. This paper investigates the influence of hygrothermal environment on the fatigue fracture mechanism of HJs through experimental and simulation researches. Experiments demonstrate the multi-stage character of HJs’ fatigue failure with dissimilar failure sequence behavior under different hygrothermal environments and fatigue load conditions. Particularly, through numerical analysis, the competitive mechanism of HJs’ fatigue failure behavior has been first revealed to explain the possible fracture modes of the HJs under different fatigue loading and aging conditions.
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