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Experimental and numerical investigations on fatigue behavior of aluminum alloy 7050-T7451 single lap four-bolted joints
Liu, Xiaomei1; Cui, Hao1; Zhang, Shangzhou1; Liu, Haipo1; Liu, Gaofeng2; Li, Shujun3
Corresponding AuthorZhang, Shangzhou(szzhangyt@163.com)
2018-07-01
Source PublicationJOURNAL OF MATERIALS SCIENCE & TECHNOLOGY
ISSN1005-0302
Volume34Issue:7Pages:1205-1213
AbstractThe fatigue behavior of aluminum alloy 7050-T7451 single lap four-bolted joints was studied by high-frequency fatigue test and finite element (FE) methods. The fatigue test results showed that a better enhancement of fatigue life was achieved for the joints with high-locked bolts by employing the combinations of cold expansion, interference fit, and clamping force. The fractography revealed that fatigue cracks propagated tortuously; more fatigue micro-cliffs, tearing ridges, lamellar structure were observed, and fatigue striation spacing was simultaneously reduced. The evaluation of residual stress conducted by FE methods confirmed the experimental results and locations of fatigue crack initiation. The extension of fatigue lives can be attributed to the evolution of fatigue damage and effect of beneficial compressive residual stresses around the hole, resulting in the delay of crack initiation, crack deflection, and plasticity-induced crack closure. (C) 2017 Published by Elsevier Ltd on behalf of The editorial office of Journal of Materials Science & Technology.
Keyword7050 aluminum alloy Bolted joint Fatigue behavior Finite element analysis Residual stress
Funding OrganizationKey Research and Development Plan of Shandong Province, China ; Natural Science Foundation of Shandong Province, China
DOI10.1016/j.jmst.2017.09.020
Indexed BySCI
Language英语
Funding ProjectKey Research and Development Plan of Shandong Province, China[2017GGX20140] ; Natural Science Foundation of Shandong Province, China[ZR2014JL031]
WOS Research AreaMaterials Science ; Metallurgy & Metallurgical Engineering
WOS SubjectMaterials Science, Multidisciplinary ; Metallurgy & Metallurgical Engineering
WOS IDWOS:000434132800018
PublisherJOURNAL MATER SCI TECHNOL
Citation statistics
Cited Times:4[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.imr.ac.cn/handle/321006/128404
Collection中国科学院金属研究所
Corresponding AuthorZhang, Shangzhou
Affiliation1.Yantai Univ, Sch Environm & Mat Engn, Yantai 264005, Peoples R China
2.Oriental Bluesky Titanium Technol Co LTD, Yantai 264005, Peoples R China
3.Chinese Acad Sci, Inst Met Res, Shenyang 110016, Liaoning, Peoples R China
Recommended Citation
GB/T 7714
Liu, Xiaomei,Cui, Hao,Zhang, Shangzhou,et al. Experimental and numerical investigations on fatigue behavior of aluminum alloy 7050-T7451 single lap four-bolted joints[J]. JOURNAL OF MATERIALS SCIENCE & TECHNOLOGY,2018,34(7):1205-1213.
APA Liu, Xiaomei,Cui, Hao,Zhang, Shangzhou,Liu, Haipo,Liu, Gaofeng,&Li, Shujun.(2018).Experimental and numerical investigations on fatigue behavior of aluminum alloy 7050-T7451 single lap four-bolted joints.JOURNAL OF MATERIALS SCIENCE & TECHNOLOGY,34(7),1205-1213.
MLA Liu, Xiaomei,et al."Experimental and numerical investigations on fatigue behavior of aluminum alloy 7050-T7451 single lap four-bolted joints".JOURNAL OF MATERIALS SCIENCE & TECHNOLOGY 34.7(2018):1205-1213.
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