Oblique angle laser shock processing

Details Oblique angle laser shock processing Oblique angle laser shock processing

1997-02-25

1999-06-15

Evans, Geoffrey S.

Electric heating

Metal heating

By arc

148525, 21912173, B23K 2600, C21D 109, C21D 706

Patent

active

059118903

ABSTRACT:
A method and apparatus for improving properties of a solid material by providing shockwaves therethrough. The method includes controlling the incident angle .theta. of the laser beam applied to the workpiece so that the required residual stresses are created in the workpiece. Particular methods of control such as lenses, polarizers, and particular transparent overlay geometries are shown. The apparatus includes structure for controlling the position and incident angle of the laser beam then controlling the polarization and/or the shape of the incident impact area, based on such incident angle .theta..

REFERENCES:
patent: 4115683 (1978-09-01), Clark et al.
patent: 4304978 (1981-12-01), Saunders
patent: 4336439 (1982-06-01), Sasnett et al.
patent: 4414038 (1983-11-01), Dausinger et al.
patent: 4547651 (1985-10-01), Maruyama
patent: 5131957 (1992-07-01), Epstein et al.
patent: 5525429 (1996-06-01), Mannava et al.

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