Journal
INTERNATIONAL JOURNAL OF FATIGUE
Volume 165, Issue -, Pages -Publisher
ELSEVIER SCI LTD
DOI: 10.1016/j.ijfatigue.2022.107177
Keywords
CFRP; Aluminum alloy; Hybrid joint; Fatigue fracture mechanism; Hygrothermal environment
Funding
- Key National Natural Science Foundation of China [U1864211]
- Natural Science Foundation of Shanghai [21ZR1431500]
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This paper investigates the influence of hygrothermal environment on the fatigue fracture mechanism of Aluminum-CFRP hybrid joints through experimental and simulation researches, and reveals the multi-stage fatigue failure characteristics and competitive mechanism of the joints.
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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