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Ultrasonic non-destructive evaluation of thin specimens

  • US 5,305,239 A
  • Filed: 10/04/1989
  • Issued: 04/19/1994
  • Est. Priority Date: 10/04/1989
  • Status: Expired due to Fees
First Claim
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1. A method for non-destructively evaluating a material, comprising the steps of:

  • transmitting an ultrasonic wave having a frequency within a predetermined frequency range into said material;

    receiving said ultrasonic wave from said material;

    measuring a frequency response of said material at frequencies within said predetermined frequency range from said received ultrasonic wave; and

    determining a frequency-dependent normalized wavenumber in said material from said frequency response.

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