期刊论文

Liao, K

英文

Coatings

2079-6412

2023

13

11

1969-

10.3390/coatings13111969

Conceptualization, J.Z., and K.L.; methodology, J.Z., and J.H.; validation, J.H., and K.L.; formal analysis, J.Z.; investigation, J.Z., and J.H.; resources, J.H., and K.L.; writing—original draft preparation, J.Z.; writing—review and editing, K.L.; supervision, K.L.; project administration, K.L.; funding acquisition, K.L. All authors have read and agreed to the published version of the manuscript. This research was Supported by the National Key Research and Development Program of China (2022YFD2202103); National Natural Science Foundation of China (51475483).

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This study explores the impact of shot peening residual compressive stress on repairing surface cracks in the 7075-T651 aluminum alloy. Two models were developed for crack repair via shot peening and fatigue test finite element modeling. A multi-step numerical simulation introduced shot peening-induced residual stress into the fatigue test model, and subsequent simulations analyzed the crack repair mechanism. The research results indicate that increasing pressure and projectile size improve repair effectiveness, but higher pressure causes material damage, and larger projectiles decrease fatigu...