Diagnostic techniques and process monitoring of pulsed laser welding

Juergen Griebsch; Peter Berger; Friedrich Dausinger; Helmut Huegel

doi:10.1117/12.193112

4 November 1994 Diagnostic techniques and process monitoring of pulsed laser welding

Juergen Griebsch, Peter Berger, Friedrich Dausinger, Helmut Huegel

Proceedings Volume 2246, Laser Materials Processing and Machining; (1994) https://doi.org/10.1117/12.193112
Event: Optics for Productivity in Manufacturing, 1994, Frankfurt, Germany

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.

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Juergen Griebsch, Peter Berger, Friedrich Dausinger, and Helmut Huegel "Diagnostic techniques and process monitoring of pulsed laser welding", Proc. SPIE 2246, Laser Materials Processing and Machining, (4 November 1994); https://doi.org/10.1117/12.193112

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