Sensitivity analyses of finite element parameters of laser shock peening for improving fatigue life of metalic components

Ju Hee Kim, Yun Jae Kim

Research output: Contribution to journalArticle

5 Citations (Scopus)

Abstract

Laser shock peening(LSP) is an innovative surface treatment technique, and it has been successfully used to improve the fatigue performance of metallic components. It is widely known, that cracks caused by metal fatigue occur only at the location where the metal is subject to tension, and not at the location where the metal is subjected to compression. Therefore, LSP can be employed to improve fatigue life because it generates a high-magnitude compressive residual stress on the surface and interior of metallic components. In this study, we analyzed the applicability of the LSP method in improving fatigue performance and evaluated the various parameters that influence the compressive residual stress. Further, we analyzed the change in the mechanical properties such as surface dynamic stress and the compressive residual stress on the surface and interior of metallic components.

Original languageEnglish
Pages (from-to)1821-1828
Number of pages8
JournalTransactions of the Korean Society of Mechanical Engineers, A
Volume34
Issue number12
DOIs
Publication statusPublished - 2010 Dec

Keywords

  • Ablative layer
  • Dynamic yield stress
  • Fe analysis
  • Infinite element
  • LSP(Laser shock peening)
  • Plasma
  • SP(Shot peening)
  • Transparent layers
  • Water tamping layer

ASJC Scopus subject areas

  • Mechanical Engineering

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