금속시편의 잔류응력 개선을 위한 레이저 단조효과

• 영문명: The Laser Peening Effect for Residual Stress Improvement on the Metal Surface
• 발행기관: 한국레이저가공학회
• 저자명: 정진만 백성훈 김정수
• 간행물 정보: 『한국레이저가공학회 학술대회 논문집』2008년도 춘계학술발표대회 논문집, 216~221쪽, 전체 6쪽
• 주제분류: 공학 > 기계공학
• 파일형태: PDF
• 발행일자: 2008.06.30

영문 초록

The effect of residual stress improvement on Ni-base Alloy 600 laser surface shock peening by a second harmonic Nd:YAG laser beam were investigated with a hole drill equipment. High pressure plasma with high density laser pulses can make plastic deformation on material surface, it means to change the characteristic of metal face with compressed residual stress. Compresses residual stress on specimen surface improved the metal fatigue and stress corrosion cracking. This is the useful method for residual stress improvement of all material surface in aero and nuclear plant components.

키워드

laser peening residual stress improvement