Effect of laser shock peening simulation parameters on residual stress of inconel alloy 600 steel

Ju Hee Kim, Yun Jae Kim, Joung Soo Kim

Research output: Contribution to journalArticle

2 Citations (Scopus)

Abstract

The effects of parameters related to the finite element simulation of the laser shock peening(LSP) process on the residual stresses of Inconel alloy 600 steel are discussed. In particular, we focus on the maximum pressure, pressure pulse duration, laser spot size, and number of shots. It is found that certain ranges of the maximum pressure and pulse duration can produce the maximum compressive residual stresses near the surface, and thus proper choices of these parameters are important. The residual stresses are not affected by the laser spot size, provided it is larger than a certain size. The magnitudes of the compressive residual stresses and the plastically affected depths are found to increase with an increasing number of shots, but this effect is less pronounced for more shots.

Original languageEnglish
Pages (from-to)43-50
Number of pages8
JournalTransactions of the Korean Society of Mechanical Engineers, A
Volume36
Issue number1
DOIs
Publication statusPublished - 2012 Jan

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Keywords

  • Ablative layer
  • Dynamic yield strength
  • FE analysis
  • Infinite element
  • LSP(Laser Shock Peening)
  • Plasma
  • SP(Shot Peening)
  • Water tamping layer

ASJC Scopus subject areas

  • Mechanical Engineering

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