Keyhole formation and power deposit law in Nd:YAG laser welding

Jean-Marie Jouvard; Olivier Perret; Ph. Naudy

doi:10.1117/12.414013

25 January 2001 Keyhole formation and power deposit law in Nd:YAG laser welding

Jean-Marie Jouvard, Olivier Perret, Ph. Naudy

Proceedings Volume 4184, XIII International Symposium on Gas Flow and Chemical Lasers and High-Power Laser Conference; (2001) https://doi.org/10.1117/12.414013
Event: XIII International Symposium on Gas Flow and Chemical Lasers and High-Power Laser Conference, 2000, Florence, Italy

Abstract

The purpose of this work is to understand keyhole formation observed during pulse Nd:YAG laser welding. We determine the power deposit law during laser pulse. We present a calculation of the energy deposit law by Fresnel reflections. The aim is to calculate the ray trajectory in keyhole to deduce the local absorption. A previous study allows to observe keyhole formation using flash X-ray radiography, and determine evolution of keyhole geometry. These results are compared with a previous experimental determination of the interaction efficiency.

Citation Download Citation

Jean-Marie Jouvard, Olivier Perret, and Ph. Naudy "Keyhole formation and power deposit law in Nd:YAG laser welding", Proc. SPIE 4184, XIII International Symposium on Gas Flow and Chemical Lasers and High-Power Laser Conference, (25 January 2001); https://doi.org/10.1117/12.414013

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