Auto-focus Control and Weld Process Monitoring of Laser Welding using Chromatic Filtering of Thermal Radiation

Proceedings of SPIE - The International Society for Optical Engineering

Volumn 3550, Issue , 1998, Pages 388-398

  Kim, Cheol Jung ^a   Baik, Sung Hoon ^a   Kim, Min Suk ^a   Chung, Chin Man ^a  

^a Korea Atomic Energy Research Institute   (South Korea)

Author keywords

Auto focus control; Chromatic aberration; Weld inspection; Weld monitoring

Indexed keywords

DEFECTS; ELECTRIC WELDING; HEAT RADIATION; LASER BEAM WELDING; LASER MATERIALS PROCESSING; NEODYMIUM LASERS; PROCESS MONITORING; PULSED LASERS; WELDS; YTTRIUM ALUMINUM GARNET;

AUTO FOCUS; CHROMATIC ABERRATION; LOCAL VARIATIONS; PULSED ND:YAG LASER WELDING; SINGLE ELEMENT DETECTORS; SPECTROSCOPIC SIGNALS; TRANSMITTANCE CURVES; WELD INSPECTION;

ABERRATIONS;

EID: 85076780095     PISSN: 0277786X     EISSN: 1996756X     Source Type: Conference Proceeding    
DOI: 10.1117/12.317954     Document Type: Conference Paper

References (6)

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3. D.Hand, F.Haran, C.Peters and J.Jones, "Full penetration detection in Nd:YAG laser welding by analysis of oscillatory optical signals:application to overlap weld seam tracking, " SPIE Proceedings Vol.3092, 534-537, (1997).
4. C-J Kim, S-H Baik, M-S Kim and C-M Chung, " Remote optical power and focus monitoring in pulsed Nd:YAG laserwelding, " Proc. of XI International Symposium on Gas Flow and Chemical Lasers and High-Power Laser Conference, SPIE Proceedings Vol.3092, 538-541, (1997).
5. C-J Kim, M-S Kim and C-M Chung, " Auto-focus Control with Optical Monitoring Using Chromatic Aberration of Focusing Optics in Laser Welding, " Proceedings of ICALEO '97, 75-84, (1998).
6. C-J Kim, M-S Kim and K-S Kim, " Size Variation Monitoring of an extended thermal radiation Source by Chromatic Filtering, " Optics Communications, Vol.152, Nos.4-6, 239-242, (1998).