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Proceedings Paper

Nonstationary hydrodynamics in processes of laser beam-material interaction
Author(s): Vladimir S. Golubev
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Paper Abstract

A qualitative analysis of the latest published result of investigations of deep laser beam-material penetration, with beam intensities in a range of 105-107 W/cm2, is performed. The processes of keyhole formation and of penetration laser welding are considered. A review of some possible hydrodynamical melt surface instabilities is given. Nonlinear stage of these instabilities can be accompanied with melt droplets injection into the beam illuminated volume. A possible mechanism of periodical relaxational melt transfer in the process of keyhole formation and penetration welding is discussed. Vapor bursts generated by intensive evaporation of the melt droplets may be responsible for this mechanism.

Paper Details

Date Published: 20 January 1999
PDF: 11 pages
Proc. SPIE 3688, 6th International Conference on Industrial Lasers and Laser Applications '98, (20 January 1999); doi: 10.1117/12.337493
Show Author Affiliations
Vladimir S. Golubev, NICTL--Laser Research Ctr. (Russia)

Published in SPIE Proceedings Vol. 3688:
6th International Conference on Industrial Lasers and Laser Applications '98
Vladislav Ya. Panchenko; Vladimir S. Golubev, Editor(s)

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