Mechanical and transport characteristic exploration for coated conductors by hoop stress tests

G. Nishijima, S. Awaji, K. Watanabe, K. Shikimachi, N. Hirano, S. Nagaya, A. Ibi, T. Izumi, Y. Shiohara

Research output: Contribution to journalArticlepeer-review

3 Citations (Scopus)

Abstract

The authors have explored mechanical and transport characteristics of coated conductors by hoop stress tests at 4.2 K, 11 T. Two monolayer coils, which were YBa2Cu3O7 (YBCO) and GdBa 2Cu3O7 (GdBCO) coils, and a double-stacked single-pancake coil were tested. The mechanical and electrical behavior of monolayer coils were simple, thus they were well explained by simple forms. The stress and strain were easily evaluated by using BJR relation and strain gauge measurements. On the other hand, the behavior of the pancake coil was not simple. The analytically evaluated azimuthal strain was qualitatively consistent with measured strain. However, the measured radial strain was not explained by analytically because of non-monolithic deformation of the coil. The transport characteristic was influenced by the non-monolithic deformation.

Original languageEnglish
Pages (from-to)1062-1066
Number of pages5
JournalPhysica C: Superconductivity and its applications
Volume471
Issue number21-22
DOIs
Publication statusPublished - 2011 Nov

Keywords

  • Coated conductors
  • High magnetic field
  • Hoop stress
  • Mechanical property

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics
  • Energy Engineering and Power Technology
  • Electrical and Electronic Engineering

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