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Edge Detection on Eddy Current Image to Increase Defect Characterization

Abstract : As the nuclear yard ages, the control of steam generator tubes (SGT) must deal with new problems. In fact new defects appear, especially in the area of the tube sheet, of the tube support or at the U-bend area. Eddy current testing using Rotating Probe Coil (absolute mode) gives a better resolution. These measurements allow smaller defects to be detected along different orientations, especially defects along the circumference in the rolling transition. Signals collected during the exploration of the tube internal wall with this coil contain the useful information which is represented in the form of a cartography (or image) for each of the signal complex components.
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Submitted on : Tuesday, June 9, 2020 - 12:45:56 PM
Last modification on : Wednesday, June 10, 2020 - 3:37:02 AM

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Bruno Benoist, P. Attaoui, Remy La, Régis Lengellé, Paul Gaillard, et al.. Edge Detection on Eddy Current Image to Increase Defect Characterization. Review of Progress in Quantitative Nondestructive Evaluation, Springer US, pp.829-836, 1996, ⟨10.1007/978-1-4613-0383-1_108⟩. ⟨hal-02862180⟩

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