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Proceedings Paper

On-Line Plasma Diagnostics For Process-Control In Welding With CO[sub]2[/sub] Lasers
Author(s): W. Gatzweiler; D. Maischner; E. Beyer
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Paper Abstract

During laser beam welding, a laser induced metal vapour plasma is formed. The plasma shows strong fluctuations combined with sound emission. The origin of these fluctuations is discussed. On-line control of the welding process is possible by measuring and analyzing the plasma emission with a photodiode and the sound emission with a microphone. Optical diagnostic methods are compared with acoustical methods. The results show that both diagnostic methods yield complementary information on the process. On-line control of the welding process is demonstrated for the influence of the process gas, hole formation in the seam and welding through.

Paper Details

Date Published: 24 March 1989
PDF: 7 pages
Proc. SPIE 1020, High Power CO2 Laser Systems and Applications, (24 March 1989); doi: 10.1117/12.950058
Show Author Affiliations
W. Gatzweiler, Fraunhofer Institut fur Lasertechnik (FRG)
D. Maischner, Fraunhofer Institut fur Lasertechnik (FRG)
E. Beyer, Fraunhofer Institut fur Lasertechnik (FRG)

Published in SPIE Proceedings Vol. 1020:
High Power CO2 Laser Systems and Applications
A. Quenzer, Editor(s)

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