专利名称：Method and apparatus for producing pulse-shaped acoustic waves on a workpiecesurface
发明人：Walter Kaule,Erik Primbsch申请号：US05/856338申请日：19771201公开号：US04144767A公开日：19790320
摘要：A method and apparatus for producing on the surface of a workpiece free ofcontact with a source of energy a pulse shaped ultrasonic shock wave comprise the useof laser means. A plurality of strip-shaped equidistantly spaced surface portions of theworkpiece are pulsed with coherent light from the laser means in time delayed sequence.The angle of propagation of the ultrasonic wave is determined by the center-to- centerdistance between the strip-shaped surface portions illuminated with coherent light, thetime delay between the light pulses and the velocity of propagation of the ultrasonicwave in the workpiece.
申请人：KRAUTKRAMER-BRANSON, INC.
代理人：Ervin B. Steinberg,Philip J. Feig
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