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This study develops a frequency feature based pulsed eddy current method. A frequency feature, termed frequency to zero, is proposed for subsurface defects and metal loss quantification in metallic specimens. A curve fitting method is also employed to generate extra frequency components and improve the accuracy of the proposed method. Experimental validation is carried out. Conclusions and further work are derived on the basis of the studies. (C) 2014 AIP Publishing LLC.
Author(s): Tian SL, Chen K, Bai LB, Cheng YH, Tian LL, Zhang H
Publication type: Article
Publication status: Published
Journal: Review of Scientific Instruments
Online publication date: 27/06/2014
Acceptance date: 09/06/2014
ISSN (print): 0034-6748
ISSN (electronic): 1089-7623
Publisher: American Institute of Physics
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