Apparatus for evaluating strain effect of critical current in superconducting wires in magnetic fields up to 16.5 T

K. Katagiri, M. Fukumoto, K. Saito, M. Ohgami, T. Okada, A. Nagata, K. Noto, K. Watanabe

Research output: Chapter in Book/Report/Conference proceedingChapter

35 Citations (Scopus)

Abstract

An apparatus to evaluate the strain effect of critical current, Ic, in practical superconducting wires was fabricated. The apparatus was installed in the 16.5 T superconducting magnet of High Field Laboratory for Superconducting Materials, Tohoku University. Total length of a specimen is 44 mm. Each end of it is soldered to a copper grip which also serves as a current terminal. The load is applied by moving the lever arm. The strain is measured by use of a extensometer set between the movable grip and the fixed one. The accuracy is 0.05% strain. The voltage taps are soldered at a distance of 10 mm. The capacities in load and current of the apparatus are 500 N and 200 A, respectively. A good operation is confirmed by comparing results with those in the conventional apparatus. Reasonable agreement with the data obtained at NIST in VAMAS international round robin test samples gave a proof for reliability on the apparatus. Using this apparatus, strain characteristics of a wire fabricated by liquid infiltration method is evaluated.

Original languageEnglish
Title of host publicationAdvances in Cryogenic Engineering
PublisherPubl by Plenum Publ Corp
Pages69-75
Number of pages7
Volume36
Editionpt A
ISBN (Print)0306435985
Publication statusPublished - 1990 Dec 1
EventProceedings of the 8th International Cryogenic Materials Conference ICMC - Los Angeles, CA, USA
Duration: 1989 Jul 241989 Jul 28

Other

OtherProceedings of the 8th International Cryogenic Materials Conference ICMC
CityLos Angeles, CA, USA
Period89/7/2489/7/28

ASJC Scopus subject areas

  • Engineering(all)

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    Katagiri, K., Fukumoto, M., Saito, K., Ohgami, M., Okada, T., Nagata, A., Noto, K., & Watanabe, K. (1990). Apparatus for evaluating strain effect of critical current in superconducting wires in magnetic fields up to 16.5 T. In Advances in Cryogenic Engineering (pt A ed., Vol. 36, pp. 69-75). Publ by Plenum Publ Corp.