Experimental and Numerical Analysis of the Distribution of Residual Stresses Induced by Laser Shock Peening in a 2050-T8 Aluminium Alloy

Abstract:

Laser shock peening (LSP) is an innovative surface treatment technique successfully applied to improving fatigue performance of metallic material. The specific characteristic of (LSP) is the generation of a low work-hardening and a deep compressive residual stresses mechanically produced by a laser-induced shock wave propagating in the material. The aim of this study is to analyse the residual stress distribution induced by laser peening in 2050-T8 aluminium alloy experimentally by the X-ray diffraction technique (method sin²Y) and numerically, by a finite element numerical modelling. A specific focus was put on the residual stress distribution along the surface of the impacted material.

• Periodical: Materials Science Forum (Volume 681)
• Pages: 296-302
• DOI: https://doi.org/10.4028/www.scientific.net/MSF.681.296
• Online since: March 2011
• Authors: Neila Hfaiedh, Patrice Peyre, Ioana Popa, Vincent Vignal, Wilfrid Seiler, V. Ji
• Keywords: Finite Element, Laser Shock Peening, X-Ray Diffraction (XRD)

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