Citation
J. Kim et al., Construction and measurements of HTS DC SQUID electronic gradiometer to beused in NDE systems, IEEE APPL S, 9(2), 1999, pp. 4389-4392
Citations number
3
Categorie Soggetti
Apllied Physucs/Condensed Matter/Materiales Science
Journal title
IEEE TRANSACTIONS ON APPLIED SUPERCONDUCTIVITY
ISSN journal
10518223
→ ACNP
Volume
9
Issue
2
Year of publication
1999
Part
3
Pages
4389 - 4392
Database
ISI
SICI code
1051-8223(199906)9:2<4389:CAMOHD>2.0.ZU;2-W
Abstract
We have designed a non-destructive evaluation system by using an electronic
gradiometer constructed with two DC SQUID magnetometers. Typical flux modu
lation of the SQUIDs used in this work was about 30 mu V and the noise at 1
0 Hz was about 14 mu Phi(0)/root Hz. The system includes a non-magnetic sta
inless steel dewar and a set of coaxial exciting coils, which was used to i
nduce an eddy current in the test piece. The sample motion stage and the SQ
UIDs were computer controlled and the output data from the electronic gradi
ometer was obtained by using Labview software.