Numerical Analysis of Laser Shock Peening as a Process for Generation of Compressive Residual Stresses in Open Hole Specimens

Abstract:

A numerical analysis of Laser Shock Peening (LSP) process is illustrated, applied to an open hole specimen. This specimen is representative of a section of an aircraft fuselage lap joint, typically prone to fatigue crack nucleation at the rivet holes. The effect of the residual stress field induced by LSP on the fatigue life of open hole specimens is investigated. The results show that significant compressive residual stresses can be introduced in fatigue sensitive areas using LSP, postponing fatigue crack nucleation.

• Periodical: Materials Science Forum (Volume 681)
• Pages: 267-272
• DOI: https://doi.org/10.4028/www.scientific.net/MSF.681.267
• Online since: March 2011
• Authors: Goran Ivetic, Ivan Meneghin, Enrico Troiani
• Keywords: Fatigue Nucleation, FEM Analysis, Laser Shock Peening, Open-Hole Specimen

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