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

Par Conseil national de recherches du Canada

DOITrouver le DOI : https://doi.org/10.1784/insi.2009.51.2.69
AuteurRechercher : 1; Rechercher : 2; Rechercher : 2; Rechercher : 2
Affiliation
  1. Conseil national de recherches du Canada. Institut de recherche aérospatiale du CNRC
  2. Newcastle University, UK
FormatTexte, Article
ConférenceThe British Institute of Non-Destructive Testing 2008 Conference, september 15-18, 2008, Cheshire, UK
Sujetpulse eddy current; metal-loss; corrosion; pulse width; duty cycle
Résumé
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 that 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 for 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.
Date de publication
Maison d’éditionThe British Institute of Non-Destructive Testing
Condition d’accès
  • available
  • unclassified
  • unlimited
Dans
  • Insight - Non-Destructive Testing and Condition Monitoring 51, nº 2 (1 février 2009) : 69–72.
Langueanglais
Publications évaluées par des pairsOui
Numéro du CNRCSMPL-2008-0139
Numéro NPARC8926710
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Identificateur de l’enregistrement8cc44cb7-d7b8-40bd-8588-475cd43ae312
Enregistrement créé2009-04-23
Enregistrement modifié2023-04-19
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