TY - JOUR
T1 - Remote field eddy current technique applied to non-magnetic steam generator tubes
AU - Fukutomi, H.
AU - Takagi, T.
AU - Nishikawa, M.
N1 - Funding Information:
This study was supported in part by the Research Committee on the Nondestructive Evaluation Technology by Eddy Current Testing of the Japan Society of Applied Electromagnetics and Mechanics through a grant from 5 PWR utilities and Nuclear Engineering Ltd., and the Grant-in-Aid for COE Research (11CE2003). The authors would like to thank Prof Hiroshi Hoshikawa and Dr Kiyoshi Koyama of Nihon University in Japan for their advice and encouragement for this work.
PY - 2001/1
Y1 - 2001/1
N2 - Unlike the impedance plane analysis form of common eddy current testing (ECT), the remote field eddy current (RFEC) technique is a through-transmission effect that reduces problems such as lift-off normally associated with ECT. In the inspection of steam generator (SG) tubes, the real issue is to detect the minute cracks growing up from the outside. However, using ECT, it is considered infeasible to accurately find them from the inside because of the limitations of penetration of eddy currents. This paper describes a finite-element approach to the solution of time-harmonic electromagnetic fields for the RFEC technique based on a magnetic vector potential and an electric scalar potential. A comparison is made of experimental and finite-element predictions of electromagnetic phenomena under the inspection of non-magnetic tubes. For the cracks outside demanding high sensitive and precise measurements in the SG tube inspection, numerical results are given for parameters to design a RFEC probe.
AB - Unlike the impedance plane analysis form of common eddy current testing (ECT), the remote field eddy current (RFEC) technique is a through-transmission effect that reduces problems such as lift-off normally associated with ECT. In the inspection of steam generator (SG) tubes, the real issue is to detect the minute cracks growing up from the outside. However, using ECT, it is considered infeasible to accurately find them from the inside because of the limitations of penetration of eddy currents. This paper describes a finite-element approach to the solution of time-harmonic electromagnetic fields for the RFEC technique based on a magnetic vector potential and an electric scalar potential. A comparison is made of experimental and finite-element predictions of electromagnetic phenomena under the inspection of non-magnetic tubes. For the cracks outside demanding high sensitive and precise measurements in the SG tube inspection, numerical results are given for parameters to design a RFEC probe.
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U2 - 10.1016/S0963-8695(00)00026-8
DO - 10.1016/S0963-8695(00)00026-8
M3 - Article
AN - SCOPUS:0035157263
SN - 0963-8695
VL - 34
SP - 17
EP - 23
JO - NDT and E International
JF - NDT and E International
IS - 1
ER -