Bending Strain Effects on the Critical Current of Bi-2223 Superconducting Tapes by Pure Bending Method
Year: 2007
Type: article
Abstract: . The effects of bending strain on the critical current of 19-filament Ag/Bi-2223 and 121-filament AgMg/Bi-2223 tapes produced by powder-in-tube method have been studied by a pure-bending method at 77K. The Icn(ε) curves are of two regimes, Icn does not decrease until bending strain increases to a limit εirr. The ε0.9 values of 19-filament Ag/Bi-2223 and 121-filament AgMg/Bi-2223 tapes are 0.32 % (negative bending), 0.64 % (positive bending) and 0.30%, respectively. The Icn(ε) curves are fitted by the formulae Icn =1-(ε/a) b, where a and b is the material parameters. The strain dependences of the Icn values for the pure-bending, modified RRT and bending-rig methods were nearly identical up to εirr.
Source: Materials science forum
Institution: Northeastern University
Language: English
Subfield: Electrical and Electronic Engineering
Field: Engineering
Domain: Physical Sciences
Open Access status: hybrid
OpenAlex ID: W2061920296