Nuclear Engineering and Technology

  • 제46권6호
  • /
  • Pages.883-888
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  • 2014
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  • 1738-5733(pISSN)
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  • 2234-358X(eISSN)
한국원자력학회 (Korean Nuclear Society)
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INFLUENCE OF SIGNAL-TO-NOISE RATIO ON EDDY CURRENT SIGNALS OF CRACKS IN STEAM GENERATOR TUBES

  • 투고 : 2014.05.09
  • 심사 : 2014.08.15
  • 발행 : 2014.12.25
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초록

This work presents the influence of noise originating from the tube itself on the detectability and sizing accuracy for laboratory-induced outer diameter axial cracks in nuclear steam generator tubes. The variations of signal amplitude and phase angle of the same cracks were analyzed when increasing the signal-to-noise ratio of the tube itself from 9 to 18. It was experimentally verified that the detectability for small cracks was enhanced by increasing the signal-to-noise ratio. The phase angle also rotated to a value representing the actual position and depth of a crack when increasing the signal-to-noise ratio.

키워드

참고문헌

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피인용 문헌

  1. Rényi Entropy Filter for Anomaly Detection With Eddy Current Remote Field Sensors vol.15, pp.11, 2015, https://doi.org/10.1109/JSEN.2015.2450236
  2. Defect localization and characterization in eddy current nondestructive testing by change detection and global optimization vol.37, pp.2, 2018, https://doi.org/10.1108/COMPEL-05-2017-0201