Mechanical Properties and Stress/Strain Dependence of Critical Current of Practical Superconducting Wires

Abstract

 Practical superconducting (SC) wires are typical composite material consisting of SC layer/filaments together with functional components. In the present article, the commonality among composite microstructures for five kinds of the practical SC wires available in the market was emphasized. Their mechanical characteristics and the stress/strain dependence of critical current have been compared in conjunction of the local strain exerted on the SC component. Finally activity of the international standardization relating to the superconductivity was introduced.