Numerical Study of Laser Shock Peening Effects on Alloy 600 Nozzles with Initial Residual Stresses

Ji Soo Kim, Hyun Suk Nam, Yun-Jae Kim, Ju Hee Kim

Research output: Contribution to journalArticle

5 Citations (Scopus)

Abstract

This paper investigates the effect of initial residual stress and prestrain on residual stresses due to laser shock peening for Alloy 600 using numerical simulation. For simulation, the strain rate dependent Johnson-Cook hardening model with a Mie-Grüneisen equation of state is used. Simulation results are compared with published experimental data, showing good agreement. It is found that the laser shock peening (LSP) process is more effective for higher initial tensile residual stress and for larger initial prestrain in terms of compressive stress at the near surface. However, the effective depth decreases with increasing initial tensile residual stress and initial prestrain.

Original languageEnglish
Article number041406
JournalJournal of Pressure Vessel Technology, Transactions of the ASME
Volume139
Issue number4
DOIs
Publication statusPublished - 2017 Aug 1

Fingerprint

Shot peening
Residual stresses
Nozzles
Lasers
Tensile stress
Compressive stress
Equations of state
Hardening
Strain rate
Computer simulation

Keywords

  • Alloy 600 penetration nozzle
  • Laser shock peening
  • primary water stress corrosion cracking (PWSCC) mitigation
  • welding residual stress

ASJC Scopus subject areas

  • Safety, Risk, Reliability and Quality
  • Mechanics of Materials
  • Mechanical Engineering

Cite this

Numerical Study of Laser Shock Peening Effects on Alloy 600 Nozzles with Initial Residual Stresses. / Kim, Ji Soo; Nam, Hyun Suk; Kim, Yun-Jae; Kim, Ju Hee.

In: Journal of Pressure Vessel Technology, Transactions of the ASME, Vol. 139, No. 4, 041406, 01.08.2017.

Research output: Contribution to journalArticle

@article{26a002e68f2f444a9edd2262c9f85101,
title = "Numerical Study of Laser Shock Peening Effects on Alloy 600 Nozzles with Initial Residual Stresses",
abstract = "This paper investigates the effect of initial residual stress and prestrain on residual stresses due to laser shock peening for Alloy 600 using numerical simulation. For simulation, the strain rate dependent Johnson-Cook hardening model with a Mie-Gr{\"u}neisen equation of state is used. Simulation results are compared with published experimental data, showing good agreement. It is found that the laser shock peening (LSP) process is more effective for higher initial tensile residual stress and for larger initial prestrain in terms of compressive stress at the near surface. However, the effective depth decreases with increasing initial tensile residual stress and initial prestrain.",
keywords = "Alloy 600 penetration nozzle, Laser shock peening, primary water stress corrosion cracking (PWSCC) mitigation, welding residual stress",
author = "Kim, {Ji Soo} and Nam, {Hyun Suk} and Yun-Jae Kim and Kim, {Ju Hee}",
year = "2017",
month = "8",
day = "1",
doi = "10.1115/1.4035977",
language = "English",
volume = "139",
journal = "Journal of Pressure Vessel Technology, Transactions of the ASME",
issn = "0094-9930",
publisher = "American Society of Mechanical Engineers(ASME)",
number = "4",

}

TY - JOUR

T1 - Numerical Study of Laser Shock Peening Effects on Alloy 600 Nozzles with Initial Residual Stresses

AU - Kim, Ji Soo

AU - Nam, Hyun Suk

AU - Kim, Yun-Jae

AU - Kim, Ju Hee

PY - 2017/8/1

Y1 - 2017/8/1

N2 - This paper investigates the effect of initial residual stress and prestrain on residual stresses due to laser shock peening for Alloy 600 using numerical simulation. For simulation, the strain rate dependent Johnson-Cook hardening model with a Mie-Grüneisen equation of state is used. Simulation results are compared with published experimental data, showing good agreement. It is found that the laser shock peening (LSP) process is more effective for higher initial tensile residual stress and for larger initial prestrain in terms of compressive stress at the near surface. However, the effective depth decreases with increasing initial tensile residual stress and initial prestrain.

AB - This paper investigates the effect of initial residual stress and prestrain on residual stresses due to laser shock peening for Alloy 600 using numerical simulation. For simulation, the strain rate dependent Johnson-Cook hardening model with a Mie-Grüneisen equation of state is used. Simulation results are compared with published experimental data, showing good agreement. It is found that the laser shock peening (LSP) process is more effective for higher initial tensile residual stress and for larger initial prestrain in terms of compressive stress at the near surface. However, the effective depth decreases with increasing initial tensile residual stress and initial prestrain.

KW - Alloy 600 penetration nozzle

KW - Laser shock peening

KW - primary water stress corrosion cracking (PWSCC) mitigation

KW - welding residual stress

UR - http://www.scopus.com/inward/record.url?scp=85018637585&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=85018637585&partnerID=8YFLogxK

U2 - 10.1115/1.4035977

DO - 10.1115/1.4035977

M3 - Article

AN - SCOPUS:85018637585

VL - 139

JO - Journal of Pressure Vessel Technology, Transactions of the ASME

JF - Journal of Pressure Vessel Technology, Transactions of the ASME

SN - 0094-9930

IS - 4

M1 - 041406

ER -