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Pulsed Eddy current technology: Characterizing material loss with gap and lift-off variations

Ownership costs of operational aircraft have increased steadily over the years. One of the major cost drivers is structural deterioration due to corrosion. Beyond the economics, finding and characterizing corrosion is essential for the continued airworthiness of aircraft fleets. To this end, the pul...

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Published in:	Research in nondestructive evaluation 2001-09, Vol.13 (3), p.119-129
Main Authors:	GIGUERE, S, LEPINE, B. A, DUBOIS, J. M. S
Format:	Article
Language:	English
Subjects:	Cross-disciplinary physics: materials science rheology Exact sciences and technology Materials science Materials testing Nondestructive testing: electromagnetic testing, eddy-current testing Physics
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creator	GIGUERE, S LEPINE, B. A DUBOIS, J. M. S
description	Ownership costs of operational aircraft have increased steadily over the years. One of the major cost drivers is structural deterioration due to corrosion. Beyond the economics, finding and characterizing corrosion is essential for the continued airworthiness of aircraft fleets. To this end, the pulsed eddy current technique holds the potential of becoming the primary means of detecting corrosion in multilayered structures. Its wide-band frequency spectrum allows the determination of a large number of parameters, such as defect size and location. Pulsed eddy current is still considered an experimental nondestructive technique because of realistic inspection problems (e.g., probe tilting, protrusion of rivets, and thickness variations in adhesive and paint) have not been addressed in the past. Recent advances change this situation and allow pulsed eddy current to be a credible field technique. (Example material: aluminum alloy 2024.)
doi_str_mv	10.1007/s00164-001-0014-x
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subjects	Cross-disciplinary physics: materials science rheology Exact sciences and technology Materials science Materials testing Nondestructive testing: electromagnetic testing, eddy-current testing Physics
title	Pulsed Eddy current technology: Characterizing material loss with gap and lift-off variations
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