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Nondestructive Quality Testing of High Temperature Superconducting Bulk Material Used in Electrical Machines and Magnetic Bearings

In: Optimization and Inverse Problems in Electromagnetism

Author

Listed:
  • Ryszard Palka

    (Technical University of Braunschweig, Institute of Electrical Machines, Traction and Drives)

  • Hardo May

    (Technical University of Braunschweig, Institute of Electrical Machines, Traction and Drives)

  • Wolf-Rüdiger Canders

    (Technical University of Braunschweig, Institute of Electrical Machines, Traction and Drives)

Abstract

This paper deals with a non-destructive examination method for high tempera ture superconductors (HTSC’s) based on the scanning of the magnetic field distribution which is trapped by a superconductor. The identification of the positions, dimensions and orientations of sub-domains within the HTSC —which are determining the quality— has been reduced to the determination of the critical current density (JC) distribution within the HTSC using above mentioned measurements. This inverse field problem has been solved by an appropriate numerical algorithm based on extended finite element formulations.

Suggested Citation

  • Ryszard Palka & Hardo May & Wolf-Rüdiger Canders, 2003. "Nondestructive Quality Testing of High Temperature Superconducting Bulk Material Used in Electrical Machines and Magnetic Bearings," Springer Books, in: Marek Rudnicki & Sławomir Wiak (ed.), Optimization and Inverse Problems in Electromagnetism, pages 303-312, Springer.
    • Handle: RePEc:spr:sprchp:978-94-017-2494-4_31
    DOI: 10.1007/978-94-017-2494-4_31
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