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Methods and systems for ultrasonic inspection of rotating shafts

  • US 8,028,581 B2
  • Filed: 08/08/2008
  • Issued: 10/04/2011
  • Est. Priority Date: 08/08/2008
  • Status: Active Grant
First Claim
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1. A method of inspecting a rotatable shaft for the presence of defects, the method comprising:

  • propagating an ultrasonic signal along a length of the shaft with an ultrasonic transducer as the shaft is continuously rotated about an axis of rotation under an applied load;

    collecting ultrasonic signals from the shaft as the shaft is rotating; and

    determining if a defect is present in the shaft based on the collected ultrasonic signals, wherein the collected ultrasonic signal is indicative of a defect in the shaft if an amplitude of the collected ultrasonic signal increases and decreases in synchronization with the rotation of the shaft.

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