DOI QR코드

DOI QR Code

Cold expansion effect on the fatigue crack growth of Al 6082: numerical investigation

  • 투고 : 2012.09.20
  • 심사 : 2013.12.12
  • 발행 : 2014.01.25

초록

Cold expansion is an efficient way to improve the fatigue life of an open hole. In this paper, three finite element models have been established to bind the crack growth from an expanded hole and simulated. Expansion and its degree influence are studied using a numerical analysis. Stress intensity factors are determined and used to evaluate the fatigue life. Residual stress field is evaluated using a nonlinear analysis and superposed with the applied stresses field in order to estimate fatigue crack growth. Experimental tests are conducted under constant loading. Results of this investigation indicate expansion and its degree are beneficial to fatigue life and a good agreement was observed between FEM simulations and experimental results.

키워드

참고문헌

  1. ANSYS (2007), User's Manuals, Revision 11.0.
  2. Amrouche, A., Mesmacque, G., Garcia, S. and Talha, A. (2003), "Cold expansion effect on the initiation and the propagation of the fatigue crack", Int. J. Fatigue, 25, 949-954. https://doi.org/10.1016/S0142-1123(03)00127-0
  3. Amrouche, A., Su, M., Aid, A. and Mesmacque, G. (2008), "Numerical study of the optimum degree of cold expansion: Application for the pre-cracked specimen with the expanded hole at the crack tip", J. Mater. Proce. Technol., 197, 250-254. https://doi.org/10.1016/j.jmatprotec.2007.06.030
  4. Bendouba, M., Aid, A., Benhamena, A. and Benguediab, M. (2012), "Effect of hardening induced by cold expansion on damage fatigue accumulation and life assessment of aluminum alloy 6082 T6", Mater. Res., 15(6), 1-5. https://doi.org/10.1590/S1516-14392011005000103
  5. Bertrand, J. and Fabrice, C. (2005), "Prevision de la fissuration par fatigue en presence de contraintes residuelles", Mec. Indust., 6, 75-88. https://doi.org/10.1051/meca:2005009
  6. Chakherlou, T.N. and Vogwell, J. (2003), "The effect of cold expansion on improving the fatigue life of fastener holes", Eng. Fail. Anal., 10, 13-24. https://doi.org/10.1016/S1350-6307(02)00028-6
  7. Chandawanich, N. and Sharpe, Jr. W.N. (1979), "An experimental study of fatigue crack initiation and growth from cold worked holes", Eng. Fract. Mech., 11, 609-620. https://doi.org/10.1016/0013-7944(79)90122-X
  8. Chobin, M., Anggit, M., Kazuo, K., Yoshiki, I. and Akihide, S. (2009), "Crack growth arrest by redirecting crack growth by drilling stop holes and inserting pins into them", Eng. Fail. Anal., 16, 475-483. https://doi.org/10.1016/j.engfailanal.2008.06.009
  9. De Matos, P.F.P., Moreira, P.M.G.P., Nedbal, I. and de Castro, P.M.S.T. (2005), "Reconstitution of fatigue crack growth in Al-alloy 2024-T3 open-hole specimens using microfractographic techniques", Eng. Fract. Mech., 72, 2232-2246. https://doi.org/10.1016/j.engfracmech.2005.02.005
  10. Fukuda, S. and Tsuruta, Y. (1978), "An experimental study of redistribution of welding residual stress", Trans. JWRI, 7, 67-72.
  11. Gopalakrishna, H.D., Narasimha, M.H.N., Krishna, M., Vinod, M.S. and Suresh, A.V. (2010), "Cold expansion of holes and resulting fatigue life enhancement and residual stresses in Al2024T3 alloy-an experimental study", Eng. Fail. Anal., 17, 361-368. https://doi.org/10.1016/j.engfailanal.2009.08.002
  12. Keith, W.J. and Martin, L.D. (2009), "Predicting fatigue crack growth from a pre-yielded hole", Int. J. Fatigue, 31, 223-230. https://doi.org/10.1016/j.ijfatigue.2008.09.007
  13. Kusko, C.S., DuPont, J.N. and Marder, A.R. (2004), "Influence of stress ratio on fatigue crack propagation behaviour of stainless steel welds", Weld. J., 83, 59-64.
  14. Kujawski, D. (2001), "Enhanced model of partial crack closure for correlation of R-ratio effects in aluminum alloys", Int. J. Fatigue, 23, 95-102. https://doi.org/10.1016/S0142-1123(00)00085-2
  15. Lacarac, V.D., Smith, D.J. and Pavier, M.J. (2001), "The effect of cold expansion on fatigue crack growth from open holes at room and high temperature", Int. J. Fatigue, 23, 161-170. https://doi.org/10.1016/S0142-1123(01)00125-6
  16. Lam, Y.C and Lian, K.S. (1989), "Effect of residual stress and its redistribution on fatigue crack growth", Theo. Appl. Fract. Mech., 12, 59-66. https://doi.org/10.1016/0167-8442(89)90015-3
  17. LaRue, J.E. (2005), "The influence of residual stress on fatigue crack growth", Master Thesis, Mississippi State University.
  18. LaRue, J.E. and Daniewicz, S.R. (2007), "Predicting the effect of residual stress on fatigue crack growth", Int. J. Fatigue, 29, 508-515. https://doi.org/10.1016/j.ijfatigue.2006.05.008
  19. Liu, Y.S., Shao, Z.J., Liu, J. and Yue, Z.F. (2010), "Finite element method and experimental investigation on the residual stress fields and fatigue performance of cold expansion hole", Mater. Des., 31(3), 1208-1215. https://doi.org/10.1016/j.matdes.2009.09.031
  20. Man, S. (2005), "Etude de l'influence et de l'optimisation du degre d'expansion à froid dans les mecanismes de reamorcage d'une fissure: Etude numerique et experimentale", Doctoral Thesis, Universite des Sciences et Technologies de Lille.
  21. Newman, J.A. (2000), "The effects of load ratio on threshold fatigue crack growth of aluminum alloys", Doctoral Thesis, Virginia University.
  22. Nigrelli, V. and Pasta, S. (2008), "Finite-element simulation of residual stress induced by split-sleeve cold-expansion process of holes", J. Mater. Proc. Technol., 205, 290-296 https://doi.org/10.1016/j.jmatprotec.2007.11.207
  23. Pasta, S. (2007), "Fatigue crack propagation from a cold-worked hole", Eng. Fract. Mech, 74, 1525-1538. https://doi.org/10.1016/j.engfracmech.2006.08.006
  24. Ramesh, N. (2005), "Fatigue crack growth under residual stresses around holes", Master Thesis, Mississippi State University.
  25. Rich, D.L. and Impellizzeri, L.F. (1977), "Fatigue analysis of cold-worked and interference fit fastener holes. Cyclic stress-strain and plastic deformation aspect of fatigue crack growth", Am. Soc. Test Mat., ASTM STP, 637, 153-175.
  26. Stefanescu, D., Santisteban, J.R., Edwards, L. and Fitzpatrick, M.E. (2004), "Residual stress measurement and fatigue crack growth prediction after cold expansion of cracked fastener holes", J. Aerosp. Eng., 17(91), 0893-1321.
  27. Todoroki, A. and Kobayashi, H. (1991), "Prediction of fatigue crack growth rate in residual stress fields", Key Eng. Mat. Fract. Strength, 367, 51-52.
  28. Toparli, M. and Aksoy, T. (1997), "Effect of the residual stresses on the fatigue crack growth behaviour at fastener holes", Mater. Sci. Eng. A, 225, 196-203. https://doi.org/10.1016/S0921-5093(96)10875-3
  29. Underwood, J.H., Pook, L.P. and Sharples, J.K. (1977), "Flaw growth and fracture", Am. Soc. Test Matm, ASTM STP, 631, 112-120.
  30. Wang, Z. and Zhang, X. (2003), "Predicting fatigue crack growth life for cold-worked holes based on existing closed-form residual stress models", Int. J. Fatigue, 25, 1285-1291. https://doi.org/10.1016/S0142-1123(03)00153-1
  31. Zhang, X. and Wang, Z. (2003), "Fatigue life improvement in fatigue-aged fastener holes using the cold expansion technique", Int. J. Fatigue, 25, 1249-1257. https://doi.org/10.1016/S0142-1123(03)00152-X

피인용 문헌

  1. Effect of the indentation process on fatigue life of drilled specimens vol.29, pp.7, 2015, https://doi.org/10.1007/s12206-015-0613-0
  2. Effects of the indentation process on fatigue life of drilled specimens: optimization of the distance between adjacent holes vol.30, pp.3, 2016, https://doi.org/10.1007/s12206-016-0216-4
  3. Effect of laser shock peening and cold expansion on fatigue performance of open hole samples vol.53, pp.5, 2015, https://doi.org/10.12989/sem.2015.53.5.867