Progress in Superconductivity

한국초전도학회 (The Korean Superconductivity Society)
권호 표지

Design and Construction of an HTS DC SQUID Electronic Gradiometer NDE system

  • Kim, J.Y. (Department of Physics, University of Inchon) ;
  • Han, S.G. (Department of Physics, University of Inchon) ;
  • Kang, J.H. (Department of Physics, University of Inchon) ;
  • Lee, E.H. (Material and Device Sector, Samsung Advanced Institute of Technology) ;
  • Song, I.H. (Material and Device Sector, Samsung Advanced Institute of Technology)
  • 발행 : 2000.02.29
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초록

We designed and constructed a non-destructive evaluation system using an HTS DC SQUID electronic gradiometer. Our DC SQUID electronic gradiometer is composed of two DC SQUID magnetometers. The system included a non-magnetic stainless steel cryostat and a set of coaxial exciting coils, which were used to induce an eddy current in the test piece. We also have calculated the eddy current density produced by an exciting coil in any direction of the testing object. We could compute the eddy current density distribution in 3D. The SQUIDs were computer controlled and the output data from the electronic gradiometer was obtained by using a Labview software.

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