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Titolo:
INTEGRATED LOW-TEMPERATURE SUPERCONDUCTOR SQUID GRADIOMETERS FOR NONDESTRUCTIVE EVALUATION
Autore:
KLEIN U; WALKER ME; CARR C; MCKIRDY DM; PEGRUM CM; DONALDSON GB; COCHRAN A; NAKANE H;
Indirizzi:
UNIV STRATHCLYDE,DEPT PHYS & APPL PHYS GLASGOW G4 0NG LANARK SCOTLAND UNIV STRATHCLYDE,DEPT ELECT & ELECT ENGN GLASGOW G1 1XW LANARK SCOTLAND MURORAN INST TECHNOL,DEPT ELECT & ELECT ENGN MURORAN HOKKAIDO 050 JAPAN
Titolo Testata:
IEEE transactions on applied superconductivity
fascicolo: 2, volume: 7, anno: 1997,
parte:, 3
pagine: 3037 - 3039
SICI:
1051-8223(1997)7:2<3037:ILSSGF>2.0.ZU;2-N
Fonte:
ISI
Lingua:
ENG
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Science Citation Index Expanded
Science Citation Index Expanded
Citazioni:
8
Recensione:
Indirizzi per estratti:
Citazione:
U. Klein et al., "INTEGRATED LOW-TEMPERATURE SUPERCONDUCTOR SQUID GRADIOMETERS FOR NONDESTRUCTIVE EVALUATION", IEEE transactions on applied superconductivity, 7(2), 1997, pp. 3037-3039

Abstract

We describe an eddy current nondestructive evaluation system using a low-temperature superconductor magnetic field sensor in an electromagnetically unshielded environment. The sensor comprises a niobium de superconducting quantum interference device (SQUID) integrated with a first-order gradiometric pickup coil to reject spatially uniform interference fields but remain sensitive to flaw induced fields. We demonstrate its use in locating and mapping subsurface flaws in a multilayered aluminum structure using an eddy current excitation field at a frequency of 70 Hz, with no magnetic shielding around the specimen or cryostat.

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Documento generato il 05/04/20 alle ore 06:33:00