Methods for altering residual stresses using mechanically...

Details Methods for altering residual stresses using mechanically... Methods for altering residual stresses using mechanically...

2006-02-07

2006-02-07

Jones, David B. (Department: 3725)

Metal deforming

By shot-blasting

C029S090700, C072S430000, C072S707000

Reexamination Certificate

active

06993948

ABSTRACT:
A mechanical transducer induces liquid cavitation, causing pressure waves in a liquid which are applied against a metal surface to afford localized elastic and plastic tensile microstrain. The pressure waves alter the surface tensile stresses in the treated metal by reducing the tensile stresses or forming surface compressive stresses. A boot is provided about the operating face of the transducer for confining a liquid through which compression waves are generated and applied to the metal surface, the boot sealing about the transducer and the surface undergoing treatment.

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