Eddy current examination of steam generator tubes from PHWR power plants using rotating magnetic field transducer
by Raimond Grimberg; Lalita Udpa; Alina Bruma; Rozina Steigmann; Adriana Savin; Satish S. Udpa
International Journal of Microstructure and Materials Properties (IJMMP), Vol. 6, No. 3/4, 2011

Abstract: This paper present the results obtained at examination of steam generator tubes samples made from Incoloy 800, using eddy current transducer with rotating magnetic field. The emission part creates a magnetic rotating field which induces eddy currents in the walls of tubes, the reception being made with an array of sensors. The method presents the advantages of a complete inspection of tube's surface at one passing. To increase the precision of discontinuity localisation, a super resolution algorithm is used. The results are comparables with those obtained at the inspection with rotating probe, being obtained a good correlation, the speed of control being superior in the case of transducer with rotating magnetic field.

Online publication date: Thu, 20-Oct-2011

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