Title :
Compressive stress-strain-Ic properties of Bi-2223 superconducting tapes
Author :
Viouchkov, Y. ; Schwartz, J.
Author_Institution :
Nat. High Magnetic Field Lab., Florida State Univ., Tallahassee, FL, USA
fDate :
3/1/2001 12:00:00 AM
Abstract :
Superconducting coil windings are subject to complex strain states due to fabrication and operation, particularly when wound in a complex geometry. Although there has been significant study of the effects of longitudinal tension and bending on Ag/Bi-Sr-Ca-Cu-O conductors, there has been little attention to the effects of longitudinal compression. Here we report a method to apply pure longitudinal compression on tape conductors without bending or buckling. Measurements on short Bi-2223 samples include stress-strain relationships at room temperature and 77 K, and the effects of compression on Ic
Keywords :
bismuth compounds; calcium compounds; critical currents; high-temperature superconductors; stress-strain relations; strontium compounds; superconducting tapes; 293 K; 77 K; Bi2Sr2Ca2Cu3O; complex strain states; critical currents; longitudinal compression; stress-strain relationships; superconducting coil windings; superconducting tapes; Conductors; Fabrication; High temperature superconductors; Magnetic field induced strain; Mechanical factors; Mechanical variables measurement; Shape control; Stress measurement; Superconducting films; Testing;
Journal_Title :
Applied Superconductivity, IEEE Transactions on
