INFLUENCE OF SIGNAL-TO-NOISE RATIO ON EDDY CURRENT SIGNALS OF CRACKS IN STEAM GENERATOR TUBES
| Autor: | Hee-Sang Shim, Do Haeng Hur, Deok Hyun Lee, One Yoo, Myung Sik Choi |
|---|---|
| Jazyk: | angličtina |
| Rok vydání: | 2014 |
| Předmět: |
Outer diameter
Materials science Acoustics Boiler (power generation) Eddy Current Test lcsh:TK9001-9401 Sizing law.invention Physics::Geophysics Detectability Sizing Accuracy Amplitude Signal-to-Noise Ratio Nuclear Energy and Engineering law Eddy-current testing mental disorders Electronic engineering Eddy current lcsh:Nuclear engineering. Atomic power Stress Corrosion Crack |
| Zdroj: | Nuclear Engineering and Technology, Vol 46, Iss 6, Pp 883-888 (2014) |
| ISSN: | 1738-5733 |
| Popis: | 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. |
| Databáze: | OpenAIRE |
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