8 July 2003 Monitoring of laser welding process by optical emission spectroscopy
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Proceedings Volume 5036, Photonics, Devices, and Systems II; (2003) https://doi.org/10.1117/12.498245
Event: Photonics, Devices, and Systems II, 2002, Prague, Czech Republic
Technological processes including laser welding that use a laser beam are typically accompanied with the occurrence of laser-induced plasma. This physical phenomenon is investigated by many different monitoring methods and optical emission spectroscopy is the most common. The recent advert of miniature fibre optic spectrometers and relative cheap and powerful computers has provided a very promising tool for on-line spectral analyzing of laser-induced plasma. The contribution deals with the on-line monitoring of a laser-induced plasma during laser beam welding by optical emission spectroscopy. In this study a continuous-wave CO2 laser with output power up to 3 kW was used. Circumstances of partial and full penetration of welded specimen material and the relation with spectroscopic parameters of laser-induced plasma were investigated.
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Jaroslav Bruncko, Frantisek Uherek, and Miroslav Michalka "Monitoring of laser welding process by optical emission spectroscopy", Proc. SPIE 5036, Photonics, Devices, and Systems II, (8 July 2003); doi: 10.1117/12.498245; https://doi.org/10.1117/12.498245


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