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Frequency feature based quantification of defect depth and thickness

Lookup NU author(s): Hong Zhang

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Abstract

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.


Publication metadata

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

Year: 2014

Volume: 85

Issue: 6

Online publication date: 27/06/2014

Acceptance date: 09/06/2014

ISSN (print): 0034-6748

ISSN (electronic): 1089-7623

Publisher: American Institute of Physics

URL: http://dx.doi.org/10.1063/1.4884518

DOI: 10.1063/1.4884518


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Funding

Funder referenceFunder name
61102141National Natural Science Foundation of China
ZYGX2012YB029Fundamental Research Funds for the Central Universities

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