Paper
26 October 1989 Model Of Dynamic Behaviour In Laser Beam Welding
W. Gatzweiler, D. Maischner, F. J. Faber, C. Derichs, E. Beyer
Author Affiliations +
Proceedings Volume 1132, High Power Lasers and Laser Machining Technology; (1989) https://doi.org/10.1117/12.961576
Event: 1989 International Congress on Optical Science and Engineering, 1989, Paris, France
Abstract
Processes like plasma development and quenching modulation of the evaporation rate, pressure variation, energy coupling or melt transport and their interdependence determine the welding process. The investigation of these processes with optical and acoustical methods is presented. When measuring the radiation of the luminous phenomenon in different wavelenght ranges, the transition from metal vapour to laser-induced plasma and vice versa as well as plasma density fluctuations in the keyhole are shown. This result is supported by measuring the pressure variations in the enviroment with a microphone. The case of full penetration welding is particularly investigated. In this case the luminous phenomenon below the workpiece and the CO2 radiation, transmitted through the keyhole is measured additionally. All these investigations result in a presented model. The model shows that the variation of the metal vapour density mainly determines the above-mentioned processes like energy coupling, pressure variations and so on, and therefore has a great influence on laser beam welding.
© (1989) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
W. Gatzweiler, D. Maischner, F. J. Faber, C. Derichs, and E. Beyer "Model Of Dynamic Behaviour In Laser Beam Welding", Proc. SPIE 1132, High Power Lasers and Laser Machining Technology, (26 October 1989); https://doi.org/10.1117/12.961576
Lens.org Logo
CITATIONS
Cited by 17 scholarly publications.
Advertisement
Advertisement
RIGHTS & PERMISSIONS
Get copyright permission  Get copyright permission on Copyright Marketplace
KEYWORDS
Plasma

Metals

Laser applications

Photodiodes

Photography

High power lasers

Signal detection

RELATED CONTENT


Back to Top