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Wiley InterScience | |||||||||||||||
  Fatigue & Fracture of Engineering Materials & StructuresVolume 30 Issue 2, Pages 115 - 130 Published Online: 12 Jan 2007 © 2010 Blackwell Publishing Ltd.
Abstract | References | Full Text: HTML, PDF (Size: 874K) | Related Articles | Citation Tracking  Laser peening and shot peening effects on fatigue life and surface roughness of friction stir welded 7075-T7351 aluminum Copyright 2007 Journal compilation © 2007 Blackwell Publishing Ltd. KEYWORDS fatigue • friction stir welding • laser peening • shot peening ABSTRACT
The effects of laser peening, shot peening, and a combination of both on the fatigue life of Friction Stir Welds (FSW) was investigated. The fatigue samples consisted of dog bone specimens and the loading was applied in a direction perpendicular to the weld direction. Several laser peening (LP) conditions with different intensities, durations, and peening orders were tested in order to obtain the optimum peening parameters. The surface roughness resulting from various peening techniques was assessed and characterized. The results indicate a significant increase in fatigue life using LP compared to shot peening when tested on their native welded specimens. Received in final form 28 August 2006 | 
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