Hoop stress test on new high strength alloy laminated Bi-2223 conductor. (15th June 2015)

• Record Type: Journal Article
• Authors: Miyoshi, Y; Nishijima, G; Kitaguchi, H; Chaud, X
• Is Part Of: Superconductor science & technology. Volume 28:Number 7(2015:Jul.)
• Publication Date: 2015-06-15
• Subjects: Bi-2223 -- hoop stress -- stress effect -- one layer coil; Superconductivity -- Periodicals; Superconductors -- Periodicals; 537.623
• DOI: 10.1088/0953-2048/28/7/075013
• Languages: English
• ISSNs: 0953-2048

Abstract

Abstract: Bi-2223, despite its high field transport performance, lacks mechanical strength and relies on lamination technology for applications where both current density and mechanical strength are important. The hoop stress limits of a newly available high-strength Bi-2223 has been measured by two different methods at LNCMI-Grenoble and Tsukuba Magnet Laboratory. The measurements confirm the new conductor's high tensile strength up to 400 MPa. We discuss briefly the role of bending strain with the aid of a supplementary hoop stress measurement with reduced winding diameter.