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Defect depth estimation using pulsed eddy current with varied pulse width excitation

Lookup NU author(s): Professor Gui Yun TianORCiD, Yong Li

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Abstract

Current industry requirements demand defect quantification rather than simple defect detection. Besides the defect geometrical size, its depth location plays a critical role for the integrity of a structure and the safe life operation of the overall assembly. It has been long known then pulsed eddy current (PEC) non-destructive testing (NDT) for electrically conductive materials has the advantage of gathering different depth information in a Single excitation process. This fact is due to the low frequencies found in the pulse spectrum that is used or the excitation of the driving coil; however, quantifying the defect depth still remains a challenge. This study considers different pulse widths and frequency components as a method of defect depth discrimination with direct applications in the evaluation of corrosion defects in multi-layer aircraft structures. Experimental testing and numerical. modelling approaches are concomitantly discussed as ways of defect depth quantification.


Publication metadata

Author(s): Abidin IZ, Mandache C, Tian GY, Li Y

Publication type: Conference Proceedings (inc. Abstract)

Publication status: Published

Conference Name: Insight: Materials Testing 2008/NDT 2008 Conference

Year of Conference: 2009

Pages: 69-72

ISSN: 1354-2575

Publisher: British Institute of Non-Destructive Testing

URL: http://dx.doi.org/10.1784/insi.2009.51.2.69

DOI: 10.1784/insi.2009.51.2.69

Library holdings: Search Newcastle University Library for this item

ISBN: 17544904


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