Factors Influencing Residual Stresses in Cold Expansion and Their Effects on Fatigue Life-A Review

被引：8

作者：

Su, Ru ^{[1
]}

Huang, Lei ^{[1
]}

Xu, Changzhou ^{[2
]}

He, Peng ^{[3
]}

Wang, Xiaoliang ^{[2
]}

Yang, Baolin ^{[4
]}

Wu, Dayong ^{[1
]}

Wang, Qian ^{[1
]}

Dong, Huicong ^{[1
]}

Ma, Haikun ^{[1
]}

机构：

[1] Hebei Univ Sci & Technol, Sch Mat Sci & Engn, Hebei Key Lab Mat Near Net Forming Technol, Shijiazhuang 050018, Peoples R China

[2] Oriental Bluesky Titanium Technol Co Ltd, Yantai 264670, Peoples R China

[3] China Int Engn Consulting Corp, Beijing 100037, Peoples R China

[4] Shijiazhuang Haishan Ind Dev Corp, Shijiazhuang 050208, Peoples R China

来源：

COATINGS | 2023年 / 13卷 / 12期

关键词：

aircraft structures; split-sleeve cold expansion; fastener hole; residual stress; fatigue life; EXPANDED FASTENER HOLES; ALUMINUM-ALLOY; CRACK-GROWTH; ELEVATED-TEMPERATURE; SPLIT SLEEVE; PERFORMANCE; PREDICTION; PROPAGATION; MICROSTRUCTURE; SIMULATION;

D O I：

10.3390/coatings13122037

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Cold expansion technology has been widely used in aviation industries as an effective method of improving the fatigue performance of fastener holes. It can improve the fatigue life several times over without adding weight, meeting the growing demand for lightweight and durable aircraft structures. In recent years, it has been extensively studied through extensive experiments and finite element simulations to analyze the residual stresses around the fastener hole. Appropriate process parameters lead to the generation of beneficial residual stresses that influence the material microstructure, thereby improving the fatigue life of the component. This paper summarized factors influencing residual stresses in cold expansion and their effects on fatigue life, and the strengthening mechanism, parameter optimization, and effect of anti-fatigue are discussed from the point of view of the residual stress and microstructure. The development of new cold expansion technologies and the research directions that can realize anti-fatigue technology efficiently are proposed.

引用

页数：23

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