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Proceedings Paper

Electromagnetic microscope for deep pulsed eddy current evaluation of airframes
Author(s): Walter N. Podney
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Paper Abstract

Superconductive quantum interference devices, patterned in copper oxide superconductor, offer new technology for eddy current evaluation of airframes, using pulsed currents. Their high sensitivity at low frequencies, with minute pickup loops, enables arrays that can give scanned images of millimeter fatigue cracks and corrosion hidden in underlayers of airframes, without disassembly. High temperature superconductors can bring the arrays into common use. They enable packaging them in a hand-held, refrigerated instrument without cryogenic encumbrances. The instrument would be a hand-held, electromagnetic microscope for eddy current inspection of airframes.

Paper Details

Date Published: 14 November 1996
PDF: 13 pages
Proc. SPIE 2945, Nondestructive Evaluation of Aging Aircraft, Airports, and Aerospace Hardware, (14 November 1996); doi: 10.1117/12.259086
Show Author Affiliations
Walter N. Podney, SQM Technology, Inc. (United States)

Published in SPIE Proceedings Vol. 2945:
Nondestructive Evaluation of Aging Aircraft, Airports, and Aerospace Hardware
Raymond D. Rempt; Alfred L. Broz, Editor(s)

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