Numerical Study of Laser Shock Peening Effects on Alloy 600 Nozzles With Initial Residual Stresses
- Authors
- Kim, Ji-Soo; Nam, Hyun-Suk; Kim, Yun-Jae; Kim, Ju-Hee
- Issue Date
- 8월-2017
- Publisher
- ASME
- Keywords
- laser shock peening; Alloy 600 penetration nozzle; welding residual stress; primary water stress corrosion cracking (PWSCC) mitigation
- Citation
- JOURNAL OF PRESSURE VESSEL TECHNOLOGY-TRANSACTIONS OF THE ASME, v.139, no.4
- Indexed
- SCIE
SCOPUS
- Journal Title
- JOURNAL OF PRESSURE VESSEL TECHNOLOGY-TRANSACTIONS OF THE ASME
- Volume
- 139
- Number
- 4
- URI
- https://scholar.korea.ac.kr/handle/2021.sw.korea/82750
- DOI
- 10.1115/1.4035977
- ISSN
- 0094-9930
- 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-Gruneisen 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.
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Collections - College of Engineering > Department of Mechanical Engineering > 1. Journal Articles
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