Experimental study of the test system for HTS Bi2223/Ag tapes under tension

Jinglei Yang; Xiaofang Hu; Xiaoping Wu

doi:10.1117/12.468805

29 May 2002 Experimental study of the test system for HTS Bi2223/Ag tapes under tension

Jinglei Yang, Xiaofang Hu, Xiaoping Wu

Proceedings Volume 4537, Third International Conference on Experimental Mechanics; (2002) https://doi.org/10.1117/12.468805
Event: Third International Conference on Experimental Mechanics, 2002, Beijing, China

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-J_c 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-J_c 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.

Citation Download Citation

Jinglei Yang, Xiaofang Hu, and Xiaoping Wu "Experimental study of the test system for HTS Bi2223/Ag tapes under tension", Proc. SPIE 4537, Third International Conference on Experimental Mechanics, (29 May 2002); https://doi.org/10.1117/12.468805

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