Accession Number : ADP000273

Title :   Fluid-Dynamical Aspects of Laser-Metal Interaction,


Personal Author(s) : Cantello,M. ; Menin,R. ; Donati,V. ; Garifo,L. ; La Rocca,A. V.

Report Date : JUL 1981

Pagination or Media Count : 7

Abstract : During the interaction of a high-power laser beam with a material surface many fluid-dynamical phenomena arise. The produced flow field interacts with the beam and affects the thermal coupling between the laser energy and the target metal. In this paper the fluid-dynamical aspects of these phenomena are discussed and new experimental results are illustrated. The experiments have been performed in conditions of interest for industrial laser processes with a 15-kW CWC)2 laser. The developing and the motion of bright clouds ignited from metal targets at incident laser power up to 11.6 kW, using an f/18 focusing system, have been studied by high speed photographic records. The properties of the cloud have been examined by spectroscopic analysis and absorption measurements.

Descriptors :   *Continuous wave lasers, *Carbon dioxide lasers, *Metals, *Targets, Interactions, High power, Italy

Distribution Statement : APPROVED FOR PUBLIC RELEASE