Sensitivity Analyses of Finite Element Parameters of Laser Shock Peening for Improving Fatigue Life of Metalic components

금속 재료 피로수명 향상을 위한 LSP 유한요소 변수 민감도 해석

  • Kim, Ju-Hee (Dept. of Mechanical Engineering, Korea Univ.) ;
  • Kim, Yun-Jae (Dept. of Mechanical Engineering, Korea Univ.)
  • Received : 2010.05.07
  • Accepted : 2010.10.26
  • Published : 2010.12.01


Laser shock peening(LSP) is an innovative surface treatment technique, and it has been successfully used to improve the fatigue performance of metallic components. It is widely known, that cracks caused by metal fatigue occur only at the location where the metal is subject to tension, and not at the location where the metal is subjected to compression. Therefore, LSP can be employed to improve fatigue life because it generates a high-magnitude compressive residual stress on the surface and interior of metallic components. In this study, we analyzed the applicability of the LSP method in improving fatigue performance and evaluated the various parameters that influence the compressive residual stress. Further, we analyzed the change in the mechanical properties such as surface dynamic stress and the compressive residual stress on the surface and interior of metallic components.


FE Analysis;LSP(Laser Shock Peening);SP(Shot Peening);Ablative Layer;Water Tamping Layer;Transparent Layer;Plasma;Dynamic Yield Stress;Infinite Element


  1. Ding, K. and Ye, L., 2006, Laser Shock Peening Performance and Process Simulation, CRC Press, pp. 47-98.
  2. Braisted, W., Brockman, R., 1999, “Finite Element Simulation of Laser Shock Peening,” International Journal of Fatigue, 21, pp. 719-724.
  3. Ling, X., Peng, W. and Ma, G., 2008, “Influence of Laser Peening Parameters on Residual Stress Field of 304 Stainless Steel,” Journal of Pressure Vessel Technology, Vol. 130, pp. 021201-1-8.
  4. Ding, K. and Ye, L., 2006, “Simulation of Multiple Laser Shock Peening of a 35CD4 Steel Alloy,” Journal of Materials Processing Technology 178, pp. 162-169.
  5. Ballard, P., Fournier, J., Fabbro, R. and Frelat, J., “Residual Stresses Induced by Laser-Shocks,” Journal de Physique IV, C3, 1991, pp. 487-581.
  6. Peyre, P. and Fabbro, R., 1995, “Laser Shock Processing : A Review of the Physics and Applications,” Optical and Quantum Electronics 27, pp. 1213-1229.
  7. Masse,J.-E. and Barreau, G., 1995, “Laser Generation of Stress Waves in Metal,” Surface and Coating Technology 70, pp. 231-234.
  8. Yang, C., Hodgson, P. D., Qianchu and Ye, L., 2008, “Geometrical Effects on Residual Stresses in 7050- T7451 Aluminum Alloy Rods Subject to Laser Shock Peening,” Journal of Material Processing Technology 201, pp. 303-309.
  9. Bang, B., Son, S., Kim, J. and Cho, C., 2009, “Residual Stress Prediction in LSP Surface Treatment by Using FEM,” Trans. Of the KSME, A, pp. 776-772.
  10. 2008, ABAQUS Version 6.7, User’s manual, Dassault Systemes,

Cited by

  1. Study on Effect of LSP Process Parameters Using Dimensionless Analysis vol.37, pp.9, 2013,