Thermal cycling, critical current vs. strain, and finite element modellingof 1, 7, 19 and 37 filament Ag/Bi-Sr-Ca-Cu-O (BSCCO) tapes

Transport critical current, I-c, distribution measurements, thermal cycling experiments and critical current vs. strain (I-c vs. epsilon) experiments were carried out on silver clad 1, 7, 19 and 37 filament Bi-Sr-Ca-Cu-O (BSC CO) tapes. The transport critical current distribution of silver clad Bi-Sr -Ca-Cu-O tapes are measured using a measurement system capable of making 10 mu m steps along 120 mm long tapes. The tapes are subjected to thermal cyc ling add repeat measurements of the I-c are made. The critical current vs. strain experiments are carried out by centre point loading of the tapes. Elastic-Plastic Finite Element Modelling (FEM) of a monocore tape is carrie d out. Our analyses show the variation of the a transverse stress, sigma(yy ), across the width of the tape.