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Proceedings Paper

Experimental study of the test system for HTS Bi2223/Ag tapes under tension
Author(s): Jinglei Yang; Xiaofang Hu; Xiaoping Wu
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Paper Abstract

A test system of fiber optic displacement sensor (FODS) was developed and applied to measure Ag clad multi-core (formula available in paper) (Bi2223/Ag) superconductor tape at liquid nitrogen temperature (77K). A method intensity compensation was used to eliminate the fluctuation in light source and fiber attenuation. The sensor's transmission characteristics and calibration function were obtained at 77K. The stress-strain curve of the multi-core Bi2223/Ag tape was presented, and its stress-Jc relationship provided a useful reference to the application of the tape. The obtained result reveal that: (1) this sensor system can normally work at 77K; (2) its linear operating range is up to 1.6mm; (3) multi-core Bi2223/Ag tape's stress-stain relationship and stress-Jc relationship can be measured real time; and (4) it overcomes the weaknesses that cryogenic strain gauges can only measure the surface deformation of these kinds of composite tapes.

Paper Details

Date Published: 29 May 2002
PDF: 4 pages
Proc. SPIE 4537, Third International Conference on Experimental Mechanics, (29 May 2002); doi: 10.1117/12.468805
Show Author Affiliations
Jinglei Yang, Univ. of Science and Technology of China (China)
Xiaofang Hu, Univ. of Science and Technology of China (China)
Xiaoping Wu, Univ. of Science and Technology of China (China)

Published in SPIE Proceedings Vol. 4537:
Third International Conference on Experimental Mechanics
Xiaoping Wu; Yuwen Qin; Jing Fang; Jingtang Ke, Editor(s)

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