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Proceedings Paper

Comprehensive process monitoring for laser welding process optimization
Author(s): P. Stritt; M. Boley; A. Heider; F. Fetzer; M. Jarwitz; D. Weller; R. Weber; P. Berger; T. Graf
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Paper 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.

Paper Details

Date Published: 18 March 2016
PDF: 10 pages
Proc. SPIE 9741, High-Power Laser Materials Processing: Lasers, Beam Delivery, Diagnostics, and Applications V, 97410Q (18 March 2016); doi: 10.1117/12.2212814
Show Author Affiliations
P. Stritt, Univ. Stuttgart (Germany)
M. Boley, Univ. Stuttgart (Germany)
A. Heider, Univ. Stuttgart (Germany)
F. Fetzer, Univ. Stuttgart (Germany)
M. Jarwitz, Univ. Stuttgart (Germany)
D. Weller, Univ. Stuttgart (Germany)
R. Weber, Univ. Stuttgart (Germany)
P. Berger, Univ. Stuttgart (Germany)
T. Graf, Univ. Stuttgart (Germany)

Published in SPIE Proceedings Vol. 9741:
High-Power Laser Materials Processing: Lasers, Beam Delivery, Diagnostics, and Applications V
Friedhelm Dorsch; Stefan Kaierle, Editor(s)

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