Electromagnetic microscope for deep pulsed eddy current evaluation of airframes

Walter N. Podney

doi:10.1117/12.259086

14 November 1996 Electromagnetic microscope for deep pulsed eddy current evaluation of airframes

Walter N. Podney

Proceedings Volume 2945, Nondestructive Evaluation of Aging Aircraft, Airports, and Aerospace Hardware; (1996) https://doi.org/10.1117/12.259086
Event: Nondestructive Evaluation Techniques for Aging Infrastructure and Manufacturing, 1996, Scottsdale, AZ, United States

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.

Citation Download Citation

Walter N. Podney "Electromagnetic microscope for deep pulsed eddy current evaluation of airframes", Proc. SPIE 2945, Nondestructive Evaluation of Aging Aircraft, Airports, and Aerospace Hardware, (14 November 1996); https://doi.org/10.1117/12.259086

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