Laser shock peening with tailored multiple laser beams

Details Laser shock peening with tailored multiple laser beams Laser shock peening with tailored multiple laser beams

1997-09-11

1999-06-15

Evans, Geoffrey S.

Electric heating

Metal heating

By arc

148525, B23K 2600

Patent

active

059118911

ABSTRACT:
Method of changing the residual compressive stresses of an area of a workpiece by tailoring multiple laser beams applied to the workpiece. In one embodiment, a relatively long duration laser pulse is applied to the workpiece followed by a relatively short duration laser pulse. Other tailoring embodiments used to increase the total residual compressive stress of workpieces include blending two laser pulses, or splicing them utilizing a first short sliced-type beam combined with a relatively long duration, high powered gaussian laser beam pulse. A third embodiment utilizes two or more laser beams or pulses of different wavelengths.

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Metadex 96(11): 31-3843 Abstract, Dec. 1995.
Metadex 81(10): 56-846 Abstract, Aug. 1980.
Metadex 80(4): 56-305, Feb. 1979.

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