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Proceedings Paper

Keyhole formation and power deposit law in Nd:YAG laser welding
Author(s): Jean-Marie Jouvard; Olivier Perret; Ph. Naudy
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Paper 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.

Paper Details

Date Published: 25 January 2001
PDF: 4 pages
Proc. SPIE 4184, XIII International Symposium on Gas Flow and Chemical Lasers and High-Power Laser Conference, (25 January 2001); doi: 10.1117/12.414013
Show Author Affiliations
Jean-Marie Jouvard, IUT Le Creusot (France)
Olivier Perret, IUT Le Creusot (France) and CEA (France)
Ph. Naudy, CEA (France)


Published in SPIE Proceedings Vol. 4184:
XIII International Symposium on Gas Flow and Chemical Lasers and High-Power Laser Conference
Antonio Lapucci; Marco Ciofini, Editor(s)

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