A comprehensive experimental and numerical study on redistribution of residual stresses by shot peening

Mahmoudi, A. H.; Ghasemi, A.; Farrahi, G. H.; Sherafatnia, K.

Abstract

Shot peening is one of the most effective surface strengthening treatment technologies in which compressive residual stresses are induced beneath the specimen surface. Effects of various factors on the distribution of residual stress profile induced by shot peening have been investigated by many researchers. However, initial residual stresses are one of the important factors which affect the shot peening residual stress.

This study is aimed to present comprehensive numerical and experimental study on the effect of initial residual stresses on the shot peened specimen. Initial residual stresses were induced using a four-point bending rig and grinding. Incremental center hole drilling (ICHD) technique was employed to measure residual stresses on bent, ground, shot peened, bent plus shot peened and ground plus shot peened specimens. Numerical analyses of these processes were performed to provide quantitative comparison of different combinations of residual stresses. The comparison with experimental results helped to have a better understanding on how shot peening residual stresses were redistributed. Furthermore, the surface hardness was measured for all specimens.

• Journal Article Type: Article
• Acceptance Date: Oct 31, 2015
• Online Publication Date: Nov 11, 2015
• Publication Date: Jan 15, 2016
• Deposit Date: Jul 11, 2024
• Journal: Materials & Design
• Print ISSN: 0264-1275
• Electronic ISSN: 1873-4197
• Publisher: Elsevier
• Peer Reviewed: Peer Reviewed
• Volume: 90
• Pages: 478-487
• DOI: https://doi.org/10.1016/j.matdes.2015.10.162
• Public URL: https://uwe-repository.worktribe.com/output/12101884
• Additional Information: This article is maintained by: Elsevier; Article Title: A comprehensive experimental and numerical study on redistribution of residual stresses by shot peening; Journal Title: Materials & Design; CrossRef DOI link to publisher maintained version: https://doi.org/10.1016/j.matdes.2015.10.162; Content Type: article; Copyright: Copyright © 2015 Elsevier Ltd. All rights reserved.