초록 ▼

A method of laser shock peening a metallic part by firing a laser on a laser shock peening surface of the part which has been adhesively covered by tape having an ablative medium, preferably a self adhering tape with an adhesive layer on one side of an ablative layer, while flowing a curtain of wate

A method of laser shock peening a metallic part by firing a laser on a laser shock peening surface of the part which has been adhesively covered by tape having an ablative medium, preferably a self adhering tape with an adhesive layer on one side of an ablative layer, while flowing a curtain of water over the surface upon which the laser beam is firing. Continuous movement is provided between the part and the laser beam while continuously firing the laser beam, which repeatably pulses between relatively constant periods, on a laser shock peening surface of the part. Using a laser beam with sufficient power to vaporize the ablative medium so that the pulses form laser beam spots on the surface and a region having deep compressive residual stresses imparted by the laser shock peening process extending into the part from the surface.

대표청구항 ▼

A method of laser shock peening a metallic workpiece, said method comprising the following steps: forming a taped surface by adhesively covering a laser shock peening surface on the workpiece with a self adhering tape having an ablative medium and an adhesive layer, continuously firing a laser beam,

A method of laser shock peening a metallic workpiece, said method comprising the following steps: forming a taped surface by adhesively covering a laser shock peening surface on the workpiece with a self adhering tape having an ablative medium and an adhesive layer, continuously firing a laser beam, which repeatably pulses between relatively constant periods, on the taped surface of the workpiece while providing continuous movement between the laser beam and the metallic workpiece, firing the laser beam with sufficient power to vaporize the ablative medium of the tape with the pulses and forming laser beam spots on the tape and forming a region in the workpiece having deep compressive residual stresses imparted by the laser beam pulsing such that the region extends into the workpiece from the laser shock peening surface, and flowing a fluid curtain over the tape upon which the laser beam is firing to form a pattern of overlapping laser beam spots while the relative movement is being provided.