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Cold expansion and interference fitting are two efficient methods for improving the fatigue life of open-hole structures. However, their combined effect on the fatigue behavior of aluminum-lithium lugs has barely been investigated. Therefore, this study aims to improve the fatigue life of 2297-T87 aluminum-lithium alloy lugs by utilizing cold expansion, interference fitting, and their combination,...
Cold expansion and interference fitting both can improve the fatigue life of 7075-T6 aluminum alloy single plates. To study the combination effect of the two techniques on fatigue life improvement, a numerical analysis method was employed to simulate the specimens with different cold expansion and interference fit degrees. Finite element methods were conducted to capture the residual stress, and the...
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