Effect of mechanical loading on the I-c degradation behavior of Bi-2223 tapes
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Data
2005-06-01
Autores
Baldan, C. A.
Shigue, C. Y.
Ruppert, E.
Oliveira, U. R.
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Título de Volume
Editor
Institute of Electrical and Electronics Engineers (IEEE)
Resumo
During the winding process of HTS coils the tapes of Bi-2223 are subjected to the influence of bending strain, axial strain, compressive force and torsional deformation resulting in I-c degradation. In the literature the effects of the individual strain components are separately analyzed in spite of during coil winding and energizing the strain-stress effects are combined. In this work using commercial tapes of Bi-2223 Ag/AgMg with and without stainless steel reinforcement several samples were wound on cylindrical FRP G-10 holder in which different combined strains are applied. Measurements of I - V characteristic curves are done to determine the degree of critical current degradation and the operational limits. The results are compared with the I, values of short samples and other specimens subjected to deformation generated by loading types such as tensile and bending strain.
Descrição
Palavras-chave
Bi-2223 tapes, critical current, HTS coils, I-c, degradation, stress-strain
Como citar
IEEE Transactions on Applied Superconductivity. Piscataway: IEEE-Inst Electrical Electronics Engineers Inc., v. 15, n. 2, p. 3552-3555, 2005.