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Strain Reduced Critical Current In Bi-2223/Ag Superconductors Under Axial Tension and Compression

  • Bennie ten Haken
  • Arno Godeke
  • Henk-Jan Schuver
  • Herman H. J. ten Kate
Part of the Advances in Cryogenic Engineering Materials book series (ACRE, volume 42)

Abstract

The critical current of Ag sheathed Bi(Pb)SrCaCuO-2223 tape conductors is investigated as a function of various strain components. A reduction of the critical current occurs due to both tensile or a compressive strain. The critical current reduction is qualitatively similar with the results as observed in Bi-2212 conductors. An axial compression leads to an immediate critical current reduction. The critical current in an axially elongated sample remains nearly constant up to a certain limit typically close to 0.3% strain. For a larger elongation the critical current reduces rapidly. A transverse pressure acting on the tape surface leads also to an irreversible critical current reduction. This behaviour is compared with the influence of an axial compression with an effective Young’s modulus. The deformation induced critical current reductions in Bi-2223 conductors can be described by a model that is already proposed for Bi-2212 conductors. This model is based on the irreversible nature of the critical current reduction due to a certain deformation.

Keywords

Axial Strain Compressive Strain Axial Compression Critical Current Strain Dependence 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.

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Copyright information

© Springer Science+Business Media New York 1996

Authors and Affiliations

  • Bennie ten Haken
    • 1
  • Arno Godeke
    • 1
  • Henk-Jan Schuver
    • 1
  • Herman H. J. ten Kate
    • 1
  1. 1.Low Temperature DivisionUniversity of TwenteAE EnschedeThe Netherlands

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