Comprehensive process monitoring for laser welding process optimization

P. Stritt; M. Boley; A. Heider; F. Fetzer; M. Jarwitz; D. Weller; R. Weber; P. Berger; T. Graf

doi:10.1117/12.2212814

18 March 2016 Comprehensive process monitoring for laser welding process optimization

P. Stritt, M. Boley, A. Heider, F. Fetzer, M. Jarwitz, D. Weller, R. Weber, P. Berger, T. Graf

Proceedings Volume 9741, High-Power Laser Materials Processing: Lasers, Beam Delivery, Diagnostics, and Applications V; 97410Q (2016) https://doi.org/10.1117/12.2212814
Event: SPIE LASE, 2016, San Francisco, California, United States

Abstract

Fundamental process monitoring is very helpful to detect defects formed during the complex interactions of capillary laser welding process. Beside the monitoring and diagnostics of laser welding process enlarges the process knowledge which is essential to prevent weld defects. Various studies on monitoring of laser welding processes of aluminum, copper and steel were performed. Coaxial analyses in real-time with inline coherent imaging and photodiode based measurements have been applied as well as off-axis thermography, spectroscopy, online X-Ray observation and highspeed imaging with 808 nm illumination wavelength. The presented diagnostics and monitoring methods were appropriate to study typical weld defects like pores, spatters and cracks. Using these diagnostics allows understanding the formation of such defects and developing strategies to prevent them.

Citation Download Citation

P. Stritt, M. Boley, A. Heider, F. Fetzer, M. Jarwitz, D. Weller, R. Weber, P. Berger, and T. Graf "Comprehensive process monitoring for laser welding process optimization", Proc. SPIE 9741, High-Power Laser Materials Processing: Lasers, Beam Delivery, Diagnostics, and Applications V, 97410Q (18 March 2016); https://doi.org/10.1117/12.2212814

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