Journal of the Korean Society of Manufacturing Technology Engineers (한국생산제조학회지)

The Korean Society of Manufacturing Technology Engineers (한국생산제조학회)
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A Study on the Monitoring of Laser Welding for S45C Steel Sheets Using Nd:YAG Laser with Continuous Waves

연속파형 Nd:YAG레이저를 이용한 S45C 강판의 레이저 용접 모니터링에 관한 연구

  • 김도형 (조선대학교 광응용공학과) ;
  • 신호준 (전남도립대학교 조선기계과) ;
  • 유영태 (조선대학교 메카트로닉스공학과)
  • Received : 2012.07.31
  • Accepted : 2012.09.13
  • Published : 2012.10.15
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Abstract

Fluctuation of light intensity from the keyhole becomes more significant in full penetration welding than partial penetration welding, since the plasma produced in the keyhole can escape from the rear side of the keyhole. The plasma optical radiation emitted during Nd:YAG laser welding of S45C steel samples has been detected with a Photodiode and analyzed under different process conditions. As the results, the BOP was performed for welding, behavior of plasma, spatter or plume was monitored to determine the reference signal. Then, random combination was made for comparison with the reference signal, which aimed at verifying reliability of the welding monitoring system that this study intended to develop.

Keywords

References

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