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Proceedings Paper

Laser shock processing with small impacts
Author(s): Patrice Peyre; Remy Fabbro; Laurent Berthe; Xavier Scherpereel; A. Le Cornec
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Paper Abstract

Surface effects induced by small laser impacts on a 55C1 steel were investigated in terms of the compressive residual stresses, the surface geometries and the work hardenings generated by the process. it was demonstrated that laser shock processing with 1-2 mm spot-size range could provide at least as beneficial surface effects as larger ones but limited to about 0.8 mm in depth where as large impacts affected more than 1.2 mm at the same power densities. This latter point was ascribed to differences in the chock propagation mode: shock decay was shown to occur earlier in the case of small impacts because of 2D attenuations as confirmed by Lagrangian simulations.

Paper Details

Date Published: 23 September 1996
PDF: 8 pages
Proc. SPIE 2789, High-Power Lasers: Applications and Emerging Applications, (23 September 1996); doi: 10.1117/12.251170
Show Author Affiliations
Patrice Peyre, Lab. d'Applications des Lasers de Puissance/ETCA (France)
Remy Fabbro, Lab. d'Applications des Lasers de Puissance/ETCA (France)
Laurent Berthe, Lab. d'Applications des Lasers de Puissance/ETCA (France)
Xavier Scherpereel, Lab. d'Applications des Lasers de Puissance/ETCA (France)
A. Le Cornec, ETCA/CREA (France)


Published in SPIE Proceedings Vol. 2789:
High-Power Lasers: Applications and Emerging Applications
Georges Sayegh; Michael R. Osborne, Editor(s)

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