Influence of bending and torsion strains on critical currents in YBCO coated conductors

Tomoaki Takao, Tsutomu Iwamura, Yuta Fukasawa, Shigetoshi Minowa, Hidenori Sato, Takashi Asano, Atsushi Ishiyama, Junko Kato, Takato Machi, Koichi Nakao, Yu Shiohara

    Research output: Contribution to journalArticle

    15 Citations (Scopus)

    Abstract

    A YBCO coated conductor is expected to be a next generation high performance superconductor. To design superconducting machines using YBCO conductors, evaluation of not only superconducting properties but also mechanical properties is very important. Hence, we applied bending and torsion to the YBCO conductor and measured degradation of the conductor against the strain. To compare with the YBCO's data, a Bi2223 conductor was also tested under the same experimental condition. From the bending test, degradation of the Bi conductor was faster than that of the YBCO conductor and the critical current gradually decreased with increasing bending strain. The YBCO conductor kept better performance than the Bi conductor, and degradation suddenly occurred. And when the superconducting layer in the YBCO conductor was subjected to compressive strain in the bending test, the critical current hardly decreased at approximately one percent of the bending strain.

    Original languageEnglish
    Pages (from-to)3513-3516
    Number of pages4
    JournalIEEE Transactions on Applied Superconductivity
    Volume17
    Issue number2
    DOIs
    Publication statusPublished - 2007 Jun

    Fingerprint

    Bending (deformation)
    Critical currents
    Torsional stress
    torsion
    critical current
    conductors
    Bending tests
    Degradation
    Superconducting materials
    degradation
    Mechanical properties
    mechanical properties

    Keywords

    • Bending
    • Degradation
    • Mechanical property
    • Torsion
    • YBCO

    ASJC Scopus subject areas

    • Electrical and Electronic Engineering
    • Physics and Astronomy (miscellaneous)

    Cite this

    Takao, T., Iwamura, T., Fukasawa, Y., Minowa, S., Sato, H., Asano, T., ... Shiohara, Y. (2007). Influence of bending and torsion strains on critical currents in YBCO coated conductors. IEEE Transactions on Applied Superconductivity, 17(2), 3513-3516. https://doi.org/10.1109/TASC.2007.899648

    Influence of bending and torsion strains on critical currents in YBCO coated conductors. / Takao, Tomoaki; Iwamura, Tsutomu; Fukasawa, Yuta; Minowa, Shigetoshi; Sato, Hidenori; Asano, Takashi; Ishiyama, Atsushi; Kato, Junko; Machi, Takato; Nakao, Koichi; Shiohara, Yu.

    In: IEEE Transactions on Applied Superconductivity, Vol. 17, No. 2, 06.2007, p. 3513-3516.

    Research output: Contribution to journalArticle

    Takao, T, Iwamura, T, Fukasawa, Y, Minowa, S, Sato, H, Asano, T, Ishiyama, A, Kato, J, Machi, T, Nakao, K & Shiohara, Y 2007, 'Influence of bending and torsion strains on critical currents in YBCO coated conductors', IEEE Transactions on Applied Superconductivity, vol. 17, no. 2, pp. 3513-3516. https://doi.org/10.1109/TASC.2007.899648
    Takao, Tomoaki ; Iwamura, Tsutomu ; Fukasawa, Yuta ; Minowa, Shigetoshi ; Sato, Hidenori ; Asano, Takashi ; Ishiyama, Atsushi ; Kato, Junko ; Machi, Takato ; Nakao, Koichi ; Shiohara, Yu. / Influence of bending and torsion strains on critical currents in YBCO coated conductors. In: IEEE Transactions on Applied Superconductivity. 2007 ; Vol. 17, No. 2. pp. 3513-3516.
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