Laser Solutions (한국레이저가공학회지)

Korean Society of Laser Processing (한국레이저가공학회)
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Fatigue Characteristics of Laser Welding Part for TB

TB용 레이저 용접부의 피로 특성

  • 오종철 (경창산업(주)) ;
  • 한문식 (계명대학교 기계.자동차공학부) ;
  • 서정 (한국기계연구원 레이저가공연구그룹) ;
  • 이제훈 (한국기계연구원 레이저가공연구그룹)
  • Published : 2002.08.01
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Abstract

As automotive manufacturers have taken a growing more interest in tailored sheet metals for improving the rigidity, weight reduction, crash durability, and cost saving application of the tailored sheet metals to automotive bodies has been resently increased greatly. In this study, we investigated the characteristics of fatigue crack initiation behavior of laser welded sheet use for vehicle body panel. We experimented three types of specimens which were machined of the same base metal : one is 1.4㎜ thick, another is 1.6㎜ thick, the others is laser welded of the 1.4mm thick specimen and 1.6㎜ thick specimen. The results indicated that laser welded metal (1.4＋1.6㎜) is the best one for fatigue strength and fatigue life.

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