Ultrasonic impact methods for treatment of welded structures

  • US 7,344,609 B2
  • Filed: 12/01/2004
  • Issued: 03/18/2008
  • Est. Priority Date: 09/03/1998
  • Status: Expired due to Term
First Claim
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1. A load bearing work product body of a solid structural material comprising an interior structural zone constructed and arranged by controlled introduction of pulses of energy of ultrasonic waves into said interior structural zone through periodic ultrasonic mechanical impulse impacts normal to an exterior work product body surface providing compression waves providing relaxed residual stress patterns and reformed grain boundary structure in said zone thereby providing a work product body with a strength greater than that present therein prior to said periodic ultrasonic mechanical impulse impacts.

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