INFLUENCE OF SIGNAL-TO-NOISE RATIO ON EDDY CURRENT SIGNALS OF CRACKS IN STEAM GENERATOR TUBES

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...

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Bibliographic Details
Published inNuclear engineering and technology Vol. 46; no. 6; pp. 883 - 888
Main Authors HUR, DO HAENG, CHOI, MYUNG SIK, SHIM, HEE-SANG, LEE, DEOK HYUN, YOO, ONE
Format Journal Article
LanguageEnglish
Published Elsevier B.V 01.12.2014
Elsevier
한국원자력학회
Subjects
Detectability
Eddy Current Test
Signal-to-Noise Ratio
Sizing Accuracy
Stress Corrosion Crack
원자력공학
Detectability
Sizing Accuracy
Stress Corrosion Crack
Eddy Current Test
Signal-to-Noise Ratio
Online AccessGet full text
ISSN1738-5733
2234-358X
DOI10.5516/NET.09.2014.055

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Summary: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.
Bibliography:G704-000135.2014.46.6.009
ISSN:1738-5733
2234-358X
DOI:10.5516/NET.09.2014.055