Distribution and Optimization of Residual Stress Fields in Titanium Simulated Blade Treated by Laser Shock Peening


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According to the characteristics of mechanical response of titanium alloy, a new constitutive model for ultra-high strain rate deformation in the process of laser shock peening was established. The constitutive model parameters were obtained by the inverse optimization. The propagation characteristic and residual stress-strain distribution under the shock wave were analyzed. The relationship between residual stress and laser power density and laser impacts was indicated via sensitivity analysis of laser parameters. According the above conclusions, the laser shock peening technic on the titanium simulated blades was optimized to obtain the appropriate residual stress distribution. The fatigue test result indicated that the fatigue strength by the optimized technic was improved by 25%, compared to the anterior technic without optimization.



Edited by:

Wen-Pei Sung and Jimmy (C.M.) Kao




S. H. Luo et al., "Distribution and Optimization of Residual Stress Fields in Titanium Simulated Blade Treated by Laser Shock Peening", Applied Mechanics and Materials, Vols. 727-728, pp. 171-176, 2015

Online since:

January 2015




* - Corresponding Author

[1] Wang Zhongguang. Fatigue of structures and materials, National Industrial Press, Beijing, (1999).

[2] D.W. Sokol, A.H. Clauer, R. Ravindranath, Pressure Vessels and Piping Division Conference (ASME/JSME2004). San Diego, (2004).

[3] Fabbro R, Peyre P, Berthe L, et at. Physics and applications of laser-shock processing, Laser Apply. 10 (1998) 265-279.

DOI: https://doi.org/10.2351/1.521861

[4] P. Peyre, R. Fabbro. Laser shock processing: a review of the physics and applications, Opt. Quant. Electron. 27 (1995) 1213-1229.

[5] XiangfanNie, Weifeng He, Liucheng Zhou, Qipeng Li, Xuede Wang. Experiment investigation of laser shock peening on TC6 titanium alloy to improve high cycle fatigue performance,. Materials Science and Engineering A. 594 (2014) 161-167.

DOI: https://doi.org/10.1016/j.msea.2013.11.073

[6] Liucheng Zhou, Yinghong Li, Weifeng He, et al. Deforming TC6 Titanium alloys at ultrahigh strain rates during multiple laser shock peening, Materials Science and Engineering A. 578 (2013) 181-186.

DOI: https://doi.org/10.1016/j.msea.2013.04.070

[7] Yinghong Li, Liucheng Zhou, Weifeng He, et al, The strengthening mechanism of anickel-based alloy after laser shockprocessing at high temperatures, Science and Technology of Advanced Materials. 14 (2013) 055010.

DOI: https://doi.org/10.1088/1468-6996/14/5/055010

[8] K Ding, L Ye. Laser shock peening performance and process simulations, CRC Press, Boca Raton Boston New York Washington, DC, (2009).

[9] William Braisted, Robert Brockman. Finite element simulation of laser shock peening, International Journal of Fatigue. 21 (1999) 719-724.

DOI: https://doi.org/10.1016/s0142-1123(99)00035-3

[10] Khan A.S., Suh Y.S., Kazmi R., Quasi-static and dynamic loading responses and constitutive modeling of titanium alloy, International Journal of Plasticity. 20(12) (2004) 2233-2248.

DOI: https://doi.org/10.1016/j.ijplas.2003.06.005