AXIAL TENSILE, TRANSVERSE COMPRESSIVE AND BENDING STRAIN EXPERIMENTS ON BI(2223) AGMG SINGLE CORE TAPES/

For the technical application of Bi(2223) tapes the use of a dispersio n hardened AgMg sheath, with improved mechanical properties is of most importance, For the characterization of the strain sensitivity of the superconducting properties, the transport currents of the tapes were investigated with applied axial tensile strain, transverse compressive stress and as a function of bending strain applied at T =77 K. The ap plication of dispersion hardened AgMg sheaths led to significantly imp roved mechanical properties of the tape, especially at temperatures be low 77 K, compared to Bi(2223) tapes with pure Ag sheath. Bi(2223)/AgM g tapes are therefore promising for practical application since long l engths up to 102 m and high transport currents up to J(c) = 18 000 A/c m(2) (77 K, 0T) were obtained.