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Proceedings Paper

Diagnostic techniques and process monitoring of pulsed laser welding
Author(s): Juergen Griebsch; Peter Berger; Friedrich Dausinger; Helmut Huegel
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Paper Abstract

Different diagnostic techniques were used to investigate melt pool instabilities and droplet generation during the welding process with pulsed lasers. In order to find the causes and the dependencies for these effects, an experimental setup was built up that allows the measurement of three different quantities. The luminosity of the welding plasma together with the instantaneous laser power were recorded by a personal computer. High speed video pictures were taken concurrently and were temporally correlated with the other signals to understand the basic phenomena. The results of experiments, which were done for a variety of several parameters, are discussed and serve as boundary conditions for a theoretical model, which helps us to understand the complex hydrodynamic mechanisms.

Paper Details

Date Published: 4 November 1994
PDF: 10 pages
Proc. SPIE 2246, Laser Materials Processing and Machining, (4 November 1994); doi: 10.1117/12.193112
Show Author Affiliations
Juergen Griebsch, Univ. Stuttgart (Germany)
Peter Berger, Univ. Stuttgart (Germany)
Friedrich Dausinger, Univ. Stuttgart (Germany)
Helmut Huegel, Univ. Stuttgart (Germany)

Published in SPIE Proceedings Vol. 2246:
Laser Materials Processing and Machining
Rolf-Juergen Ahlers; Peter Hoffmann; Hermann Lindl; Ruediger Rothe, Editor(s)

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