비파괴검사학회지 (Journal of the Korean Society for Nondestructive Testing)

  • 제25권3호
  • /
  • Pages.189-200
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  • 2005
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  • 1225-7842(pISSN)
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  • 2287-402X(eISSN)
한국비파괴검사학회 (The Korean Society for Nondestructive Testing)
권호 표지

Ultrasonic NDE Classifications with the Gradient Descent Method and Synthetic Aperture Focusing Technique

  • Kim, Dae-Won (Department of Electronics and Computer Engineering, Dankook University)
  • 발행 : 2005.06.30
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초록

Ultrasonic inspection methods are widely used for detecting flaws in materials. One of the more popular methods involves the extraction of an appropriate set of features followed by the use of a neural network for the classification of the signals in the feature space. This paper describes an approach which uses LMS method to determine the coordinates of the ultrasonic probe followed by the use of SAFT to estimate the location of the ultrasonic reflector The method is employed for classifying NDE signals from the steam generator tubes in a nuclear power plant. The classification results using this scheme for the ultrasonic signals from cracks and deposits within steam generator tubes are presented.

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참고문헌

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