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Bore probe for tube inspection with guided waves and method therefor

  • US 5,734,588 A
  • Filed: 06/24/1996
  • Issued: 03/31/1998
  • Est. Priority Date: 01/17/1995
  • Status: Expired due to Fees
First Claim
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1. A system of using guided ultrasonic waves for inspection of defects in tubing using a transducer for generating the guided waves at any one of several parameters of phase velocity, Cph and frequency, f, to operate at a specific point on a dispersion curve of a specific ultrasonic guided wave mode within said tubing, said transducer being tuned to a said phase velocity, by:

  • providing as a part of said transducer an annular array of radiating elements substantially concentric with and spaced from each other along the same direction as the direction of propagation of said guided waves;

    means for generating by said elements of said transducer a said guided wave of any selected one of said several parameters of phase velocity;

    whereby the structure of said wave may be readily changed for effective detection, location analysis, classification, and sizing.

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