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예방 용접 Overlay가 원전 가압기 이종금속용접부 잔류응력 완화에 미치는 영향Effect of Preemptive Weld Overlay on Residual Stress Mitigation for Dissimilar Metal Weld of Nuclear Power Plant Pressurizer
- Other Titles
- Effect of Preemptive Weld Overlay on Residual Stress Mitigation for Dissimilar Metal Weld of Nuclear Power Plant Pressurizer
- Issue Date
- 2008
- Publisher
- 대한기계학회
- Keywords
- 예방 용접 오버레이; 일차수 응력부식균열; 용접잔류응력; 이종금속용접; Preemptive Weld Overlay; PWSCC; Welding Residual Stress; Dissimilar Metal Weld; Preemptive Weld Overlay; PWSCC; Welding Residual Stress; Dissimilar Metal Weld
- Citation
- 대한기계학회논문집 A, v.32, no.10, pp.873 - 881
- Indexed
- SCOPUS
KCI
- Journal Title
- 대한기계학회논문집 A
- Volume
- 32
- Number
- 10
- Start Page
- 873
- End Page
- 881
- ISSN
- 1226-4873
- Abstract
- Weld overlay is one of the residual stress mitigation methods which arrest crack initiation and crack growth. Therefore weld overlay can be applied to the region where cracking is likely to be. An overlay weld used in this manner is termed a preemptive weld overlay(PWOL). In pressurized water reactor(PWR) dissimilar metal weld is susceptible region for primary water stress corrosion cracking(PWSCC). In order to examine the effect of PWOL on residual stress mitigation, PWOL was applied to a specific dissimilar metal weld of Kori nuclear power plant by finite element analysis method. As a result, strong compressive residual stress was made in PWSCC susceptible region and PWOL was proved effective preemptive repair method for weldment
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Collections - College of Engineering > Department of Mechanical Engineering > 1. Journal Articles
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