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Proceedings Paper

CO2 laser tailored blank welding: process monitoring
Author(s): Giuseppe D'Angelo; Elena Borello; Nereo Pallaro
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Paper Abstract

Tailored blank welding has been a rapidly growing segment of the automotive industry over the last five years. It allows to choose the optimal thickness of the sheets for different zones taking into account different mechanical stresses, vehicle safety reinforcement. Through the elimination of extra reinforcement parts, the use of tailored blanks allows to produce lighter car bodies and to simplify the production cycle. As more laser welding systems are being installed in industry, in order to increase the productivity and maintain constant quality of the products, the demand for the development of process monitoring systems increases. In this paper a monitoring system, based on the measurement of the radiation from the plasma plume during the CO2 tailored blanks laser welding, is presented. Using an appropriate combination of optical components, detectors and a special software, a complete apparatus has been developed. The signals were found to be correlated to weld quality parameters including the defects such as holes, overlapping and open butts.

Paper Details

Date Published: 23 September 1996
PDF: 7 pages
Proc. SPIE 2789, High-Power Lasers: Applications and Emerging Applications, (23 September 1996); doi: 10.1117/12.251198
Show Author Affiliations
Giuseppe D'Angelo, Ctr. Ricerche Fiat (Italy)
Elena Borello, Ctr. Ricerche Fiat (Italy)
Nereo Pallaro, Ctr. Ricerche Fiat (Italy)

Published in SPIE Proceedings Vol. 2789:
High-Power Lasers: Applications and Emerging Applications
Georges Sayegh; Michael R. Osborne, Editor(s)

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