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Proceedings Paper

Recent advances in remote field eddy current NDE techniques and their applications in detection, characterization, and monitoring of deeply hidden corrosion in aircraft structures
Author(s): Yushi Sun; Tianhe Ouyang; Satish S. Udpa
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Paper Abstract

The remote field eddy current (RFEC) technique is based on the RFEC phenomenon which is characterized by differences in the energy flow patterns in the near and remote field regions. The energy released by the probe excitation coil traverses the pipe al twice before reaching the pickup coil. The RFEC technique, currently used in metallic tube inspection, is therefore characterized by its equal sensitivity to a flaw irrespective to its location in the tube wall. It can be used for detecting defects located several skin-depths away from the excitation source, since its inspection capacity is limited by the skin-depth of the specimen, but by the signal-to-noise ratio for a particular measurement condition.

Paper Details

Date Published: 28 January 1999
PDF: 11 pages
Proc. SPIE 3586, Nondestructive Evaluation of Aging Aircraft, Airports, and Aerospace Hardware III, (28 January 1999); doi: 10.1117/12.339905
Show Author Affiliations
Yushi Sun, Iowa State Univ. (United States)
Tianhe Ouyang, Iowa State Univ. (United States)
Satish S. Udpa, Iowa State Univ. (United States)

Published in SPIE Proceedings Vol. 3586:
Nondestructive Evaluation of Aging Aircraft, Airports, and Aerospace Hardware III
Ajit K. Mal, Editor(s)

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