Topic
Peening
About: Peening is a research topic. Over the lifetime, 5538 publications have been published within this topic receiving 73073 citations.
Papers published on a yearly basis
Papers
More filters
TL;DR: In this article, a model for material deformation processes induced by laser-generated shock waves was developed for laser peen forming (LPF) and laser shock peening of metals.
Abstract: A model was developed for material deformation processes induced by laser-generated shock waves. The processes include laser peen forming (LPF) and laser shock peening (LSP) of metals. Numerical solutions of the model using finite element method were implemented in two steps: (1) explicit step, devoted to shock wave propagation, and (2) implicit step, calculating relaxation of material. A series of LPF and LSP experiments was conducted to validate the model. The residual stress measurements by synchrotron x-ray diffraction and deformation measurements by profilometry showed that the experimental and numerical results were in good agreement. It is the first time to numerically and experimentally study the novel process of micro-scale LPF. An important aspect of the work is that the numerical results were further analytically explored to gain improved understanding of wave-solid interaction including shock wave attenuation and shock velocity variation.
85 citations
TL;DR: In this paper, the results of laser peening without coating on low carbon austenitic stainless steel 316L were discussed, and the dependence of laser pulse density on properties such as surface roughness, surface residual stress, microhardness, and corrosion behavior of LPwC specimen were investigated.
85 citations
25 Mar 2008-Materials Science and Engineering A-structural Materials Properties Microstructure and Processing
TL;DR: In this article, the authors report on the high-cycle fatigue performance of 7085-T7651 aluminum treated with combinations of laser peening and anodization, and show that laser-peened specimens exhibited significantly improved fatigue performance, with non-anodized specimens having a factor of 5-14 improvement in fatigue life.
Abstract: This study reports on the high-cycle fatigue performance of 7085-T7651 aluminum treated with combinations of laser peening and anodization Stress-life fatigue data were generated in a high humidity environment using smooth (Kt = 1) specimens tested at a stress ratio R = 01 and a range of maximum stress Tests were performed in the as-machined (untreated), anodized, laser peened, and laser peened then anodized conditions The results show that laser-peened specimens exhibited significantly improved fatigue performance, with non-anodized specimens having a factor of 5–14 improvement in fatigue life (depending on stress level) and anodized specimens having a factor of 8–9 improvement in fatigue life Without laser peening, anodized specimens had reduced fatigue life at all stress levels With laser peening, anodized and non-anodized specimens had similar lives at high stress (life
84 citations
TL;DR: In this article, a series of notched cylindrical specimens, peened by using different parameters, was fatigue tested, being the aim to determine the improvement of the fatigue limit of the treated specimens.
84 citations
TL;DR: In this article, notched specimens with a stress concentration factor common in many structural components have been subjected to severe shot peening process and the results indicate a very significant fatigue strength improvement for severely shot peened specimens in spite of their very high surface roughness.
84 citations