DocumentCode
1542711
Title
Development of an electromagnetic microscope using HTS SQUIDs
Author
Podney, W.N.
Author_Institution
SQM Technol. Inc., La Jolla, CA, USA
Volume
9
Issue
2
fYear
1999
fDate
6/1/1999 12:00:00 AM
Firstpage
3483
Lastpage
3486
Abstract
Superconductive quantum interference devices (SQUIDS) offer new technology for eddy current evaluation of materials. Their high resolution at low frequencies enables arrays of small pickup loops that can give images of millimeter fatigue cracks, corrosion, and inclusions deep inside materials and structures, nondestructively. 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 evaluation of materials.
Keywords
SQUIDs; eddy current testing; electromagnetic devices; high-temperature superconductors; microscopes; HTS SQUID; corrosion; eddy current testing; electromagnetic microscope; fatigue crack; hand-held instrument; high temperature superconductor; inclusion; nondestructive evaluation; pickup loop array; Eddy currents; Frequency; High temperature superconductors; Image resolution; Instruments; Interference; Microscopy; SQUIDs; Superconducting materials; Superconductivity;
fLanguage
English
Journal_Title
Applied Superconductivity, IEEE Transactions on
Publisher
ieee
ISSN
1051-8223
Type
jour
DOI
10.1109/77.783780
Filename
783780
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