Process monitoring for laser welding using a quality sensor for cutting

Stephan Fazeny; Andreas Penz; Markus Bohrer; Dieter Schuoecker

doi:10.1117/12.308076

12 May 1998 Process monitoring for laser welding using a quality sensor for cutting

Stephan Fazeny, Andreas Penz, Markus Bohrer, Dieter Schuoecker

Proceedings Volume 3268, Gas and Chemical Lasers and Intense Beam Applications; (1998) https://doi.org/10.1117/12.308076
Event: Optoelectronics and High-Power Lasers and Applications, 1998, San Jose, CA, United States

Abstract

In typical optical sensor setups for CO₂ laser material processing there are scraper mirrors or beam selectors used to allow sensor positions, which have an coaxial path for both the laser beam and the monitored visible or near- infrared signal. For the monitoring and controlling of the laser welding process it is of interest to get information on the plasma stability. A two color photodiode sensor which has been successfully tested for quality monitoring of both cutting and ablation has been used for welding in order to find correlations between the sensor signal and the quality of the weld seam. Results and comparisons between cutting and welding will be presented.

Citation Download Citation

Stephan Fazeny, Andreas Penz, Markus Bohrer, and Dieter Schuoecker "Process monitoring for laser welding using a quality sensor for cutting", Proc. SPIE 3268, Gas and Chemical Lasers and Intense Beam Applications, (12 May 1998); https://doi.org/10.1117/12.308076

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