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Proceedings Paper

Establishing laser welding parameters to minimize weld-piece distortion by means of multi-line laser profilometry
Author(s): Aleš Gorkic; Matija Jezeršek; Janez Možina; Janez Diaci
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Paper Abstract

The paper presents a new method for on-line acquisition of weld-piece surface topography during pulsed laser welding. The method is based on illumination of the weld-piece surface with multi-line laser projector and imaging of the illuminated surface with a digital camera. The acquired image is processed by a personal computer to get the three-dimensional (3D) weld-piece surface topography. The set-up was applied to minimize weld-piece distortion during laser butt-welding of low-carbon thin steel sheets. Methodology based on Taguchi methods was developed enabling optimization of processing parameters. Root-mean-square (RMS) of surface distortion was used as the scalar parameter quantifying the amount of distortion. The results show that laser pulse duration and welding speed have a major influence on RMS distortion.

Paper Details

Date Published: 26 April 2007
PDF: 8 pages
Proc. SPIE 6346, XVI International Symposium on Gas Flow, Chemical Lasers, and High-Power Lasers, 63461A (26 April 2007); doi: 10.1117/12.738680
Show Author Affiliations
Aleš Gorkic, Univ. of Ljubljana (Slovenia)
Matija Jezeršek, Univ. of Ljubljana (Slovenia)
Janez Možina, Univ. of Ljubljana (Slovenia)
Janez Diaci, Univ. of Ljubljana (Slovenia)


Published in SPIE Proceedings Vol. 6346:
XVI International Symposium on Gas Flow, Chemical Lasers, and High-Power Lasers

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