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Improvement mechanism and bending strain tolerance for reinforced Bi2223 superconducting tapes

Improvement mechanism and bending strain tolerance for reinforced Bi2223 superconducting tapes
Improvement mechanism and bending strain tolerance for reinforced Bi2223 superconducting tapes
Comprehensive mechanical characterisation of stainless steel reinforced Bi2223 superconducting tapes was conducted using purpose built rigs. This included the effect of axial (tensile and compressive) and bending strain on the critical current (Ic) of reinforced Bi2223 tape. In addition, the axial tensile and transverse compressive stress properties of the tape were measured and evaluated. It was found that the Ic bending strain characteristic of the tape was improved as a result of sheath reinforcement, compared to an identical tape without reinforcement. A mechanism for this improvement based on the homogenising effect of the reinforcement on strain is porposed. To avoid Ic degredation, the maximum axial stress on the reinforced tape should not exceed 350 MPa, or the tensile strain should be less than 0.65 percent. Furthermore, no Ic degradation was observed for transverse compressive stresses up to 100 MPa, while an axial compressive strain of about 0.3 percent causes about 10 percent drop in the critical current.
1742-6588
543-546
Al-Mosawi, M.K.
650b2475-f20f-4d8f-948c-1e28863b10dc
Xu, B.
0dbc6d06-8855-489e-8b0a-7aea092b1705
Beduz, C.
2cbc6ece-3e8b-454b-86d6-3960596bd234
Yang, Y.
4cac858a-e0c0-4174-a839-05ca394fc51f
Stephen, N.G.
af39d0e9-b190-421d-86fe-28b793d5bca3
Al-Mosawi, M.K.
650b2475-f20f-4d8f-948c-1e28863b10dc
Xu, B.
0dbc6d06-8855-489e-8b0a-7aea092b1705
Beduz, C.
2cbc6ece-3e8b-454b-86d6-3960596bd234
Yang, Y.
4cac858a-e0c0-4174-a839-05ca394fc51f
Stephen, N.G.
af39d0e9-b190-421d-86fe-28b793d5bca3

Al-Mosawi, M.K., Xu, B., Beduz, C., Yang, Y. and Stephen, N.G. (2006) Improvement mechanism and bending strain tolerance for reinforced Bi2223 superconducting tapes. Journal of Physics: Conference Series, (43), 543-546. (doi:10.1088/1742-6596/43/1/134).

Record type: Article

Abstract

Comprehensive mechanical characterisation of stainless steel reinforced Bi2223 superconducting tapes was conducted using purpose built rigs. This included the effect of axial (tensile and compressive) and bending strain on the critical current (Ic) of reinforced Bi2223 tape. In addition, the axial tensile and transverse compressive stress properties of the tape were measured and evaluated. It was found that the Ic bending strain characteristic of the tape was improved as a result of sheath reinforcement, compared to an identical tape without reinforcement. A mechanism for this improvement based on the homogenising effect of the reinforcement on strain is porposed. To avoid Ic degredation, the maximum axial stress on the reinforced tape should not exceed 350 MPa, or the tensile strain should be less than 0.65 percent. Furthermore, no Ic degradation was observed for transverse compressive stresses up to 100 MPa, while an axial compressive strain of about 0.3 percent causes about 10 percent drop in the critical current.

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Published date: 2006

Identifiers

Local EPrints ID: 41990
URI: http://eprints.soton.ac.uk/id/eprint/41990
ISSN: 1742-6588
PURE UUID: 8c14fa82-a415-42c6-96de-1e7324b89b11
ORCID for Y. Yang: ORCID iD orcid.org/0000-0002-3874-6735

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Date deposited: 25 Oct 2006
Last modified: 20 Jul 2019 01:21

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