한국공작기계학회:학술대회논문집 (Proceedings of the Korean Society of Machine Tool Engineers Conference)

한국생산제조학회 (The Korean Society of Manufacturing Technology Engineers)
권호 표지

스페클 간섭법에 의한 Nd:YAG 레이저 용접부의 변형해석

Strain Analysis of Nd:YAG Laser Welding Zone by Speckle Interferometry

  • 김경석 (조선대 기계공학부) ;
  • 김성식 (목포과학대학 컴퓨터응용기계과) ;
  • 정승택 (조선대 대학원) ;
  • 김종수 (조선대 레이저응용신기술개발연구센터)
  • 발행 : 2002.10.01
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초록

This paper used the Laser Speckle Interferometry to present the strain analysis of Nd:YAG Laser welding zone. Previous TIG welding to sheet plate, which welds only high-skilled engineer, produces residual stress nearby welding zone due to thermal effect. However, Laser welding makes sheet pate welding easy and thermal effect minimum. Thermal effect zone is measured by strain analysis of the laser-welding zone by ESPI under tensile testing of sheet plate welded by Nd:YAG laser. The ESPI results, which compared with strain gage method, are agreed within error 3 %.

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