Study on the effect of laser peening with different power densities on fatigue life of fastener hole

被引：29
作者：
Jiang, Y. F. [1 ]
Ji, B. [1 ]
Gan, X. D. [2 ]
Hua, Ch. [3 ]
Li, X. [1 ]
Zhu, H. [1 ]
机构：
[1] Jiangsu Univ, Sch Mech Engn, Zhenjiang 212013, Peoples R China
[2] Chengdu Aircraft Design & Res Inst AVIC, Chengdu 610091, Sichuan, Peoples R China
[3] AVIC Chengdu Aircraft Ind Grp Co Ltd, Chengdu 637199, Sichuan, Peoples R China
来源：
OPTICS AND LASER TECHNOLOGY | 2018年 / 106卷
基金：
中国国家自然科学基金;
关键词：
Laser shock processing; Fastener hole; 7050-T7451 aluminum alloy; Power density; Residual stress; Fatigue life; RESIDUAL-STRESSES; CRACK GROWTH; SPECIMENS; BEHAVIOR; IMPACTS; STEEL; ALLOY;
D O I：
10.1016/j.optlastec.2018.04.025
中图分类号：
O43 [光学];
学科分类号：
070207 ; 0803 ;
摘要：
Laser shock processing can improve the fatigue life of fastener holes. The purpose of this study is to investigate the effect of laser power density on fatigue life and fracture characteristics of 7050-T7451 aluminum alloy fastener hole specimens with 6 mm thickness. ABAQUS software is used to analyze the three-dimensional stress distribution. The fatigue test was carried out and the treated specimens were evaluated by scanning electron microscope. The results show that with the increase of laser power density, the fatigue life gain of fastener hole specimens increases firstly, then decreases, and then increases again. The fatigue life gain of the fastener hole specimen is related to the initiation position of the fatigue crack and the direction of the crack propagation. It is speculated that this is closely related to the three-dimensional stress distribution of the fastener holes after laser shock processing in different laser power density. (C) 2018 Elsevier Ltd. All rights reserved.
引用
收藏
页码：311 / 320
页数：10
相关论文
共 18 条
  • [1] Reverse bending fatigue of shot peened 7075-T651 aluminium alloy: The role of residual stress relaxation
    Benedetti, M.
    Fontanari, V.
    Scardi, P.
    Ricardo, C. L. A.
    Bandini, M.
    [J]. INTERNATIONAL JOURNAL OF FATIGUE, 2009, 31 (8-9) : 1225 - 1236
  • [2] ANALYSIS OF CLOSURE IN FATIGUE CRACK GROWTH
    BUDIANSKY, B
    HUTCHINSON, JW
    [J]. JOURNAL OF APPLIED MECHANICS-TRANSACTIONS OF THE ASME, 1978, 45 (02): : 267 - 276
  • [3] Effect of advancing direction on fatigue life of 316L stainless steel specimens treated by double-sided laser shock peening
    Correa, C.
    Ruiz de Lara, L.
    Diaz, M.
    Gil-Santos, A.
    Porro, J. A.
    Ocana, J. L.
    [J]. INTERNATIONAL JOURNAL OF FATIGUE, 2015, 79 : 1 - 9
  • [4] Numerical studies of welding residual stresses in tubular joints and experimental validations by means of x-ray and neutron diffraction analysis
    Hemmesi, Kimiya
    Farajian, Majid
    Boin, Mirko
    [J]. MATERIALS & DESIGN, 2017, 126 : 339 - 350
  • [5] Assessment of fatigue striation counting accuracy using high resolution scanning electron microscope
    Hershko, Emmanuel
    Mandelker, Nir
    Gheorghiu, George
    Sheinkopf, Haim
    Cohen, Izack
    Levy, Ofer
    [J]. ENGINEERING FAILURE ANALYSIS, 2008, 15 (1-2) : 20 - 27
  • [6] LIGHTWEIGHT MATERIALS FOR AIRCRAFT APPLICATIONS
    IMMARIGEON, JP
    HOLT, RT
    KOUL, AK
    ZHAO, L
    WALLACE, W
    BEDDOES, JC
    [J]. MATERIALS CHARACTERIZATION, 1995, 35 (01) : 41 - 67
  • [7] Fatigue in laser shock peened open-hole thin aluminium specimens
    Ivetic, Goran
    Meneghin, Ivan
    Troiani, Enrico
    Molinari, Gianluca
    Ocana, Jose
    Morales, Miguel
    Porro, Juan
    Lanciotti, Agostino
    Ristori, Vjola
    Polese, Claudia
    Plaisier, Jasper
    Lausi, Andrea
    [J]. MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING, 2012, 534 : 573 - 579
  • [8] Fatigue crack growth in laser-shock-peened Ti-6Al-4V aerofoil specimens due to foreign object damage
    Lin, B.
    Lupton, C.
    Spanrad, S.
    Schofield, J.
    Tong, J.
    [J]. INTERNATIONAL JOURNAL OF FATIGUE, 2014, 59 : 23 - 33
  • [9] The effects of laser peening and shot peening on fretting fatigue in Ti-6Al-4V coupons
    Liu, Kevin K.
    Hill, Michael R.
    [J]. TRIBOLOGY INTERNATIONAL, 2009, 42 (09) : 1250 - 1262
  • [10] Grain refinement mechanism of multiple laser shock processing impacts on ANSI 304 stainless steel
    Lu, J. Z.
    Luo, K. Y.
    Zhang, Y. K.
    Sun, G. F.
    Gu, Y. Y.
    Zhou, J. Z.
    Ren, X. D.
    Zhang, X. C.
    Zhang, L. F.
    Chen, K. M.
    Cui, C. Y.
    Jiang, Y. F.
    Feng, A. X.
    Zhang, L.
    [J]. ACTA MATERIALIA, 2010, 58 (16) : 5354 - 5362
12