Direct measurement of difference in local deformation and its influence on critical current in Bi2223/Ag/Ag alloy composite tape

The sample location dependence of the critical current I C – applied tensile strain relation of Bi2223 composite tape at 77 K was studied. The I C of the local portions and the overall sample were measured for voltage probe distances of 10 and 40 mm using extensometers couples of 12 and 50 mm, respe...

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Bibliographic Details
Published in:Scripta materialia 2008-08, Vol.59 (4), p.448-450
Main Authors: Shin, J.K., Ochiai, S., Sugano, M., Okuda, H., Nyilas, A., Oh, S.S.
Format: Article
Language:English
Subjects:
Bi2223 composite superconductor
COMPOSITES
Couples
Critical current and strain distribution along sample length
Damage
DEFORMATION
Electric potential
Extensometers
INTEGRATED CIRCUITS
MEASUREMENT
Nylias extensometer
SILVER ALLOYS (50 TO 99 AG)
Silver base alloys
STRAIN
SUPERCONDUCTORS
TAPE
VOLTAGE
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Summary:The sample location dependence of the critical current I C – applied tensile strain relation of Bi2223 composite tape at 77 K was studied. The I C of the local portions and the overall sample were measured for voltage probe distances of 10 and 40 mm using extensometers couples of 12 and 50 mm, respectively. With this method, a difference in the I C–tensile strain relation in local portions was clearly detected, resulting in a big difference in the extent of damage among the local portions.
ISSN:1359-6462
1872-8456
DOI:10.1016/j.scriptamat.2008.04.041