Title :
Analysis of Thermal Residual Stress/Strain in REBCO Coated Conductor Tapes
Author :
Dizon, John Ryan C. ; Nisay, Arman Ray N. ; Dedicatoria, Marlon James A. ; Munoz, Rodrigo C. ; Hyung-Seop Shin ; Sang-Soo Oh
Author_Institution :
Dept. of Mech. Design Eng., Andong Nat. Univ., Andong, South Korea
Abstract :
2G HTS coated conductor (CC) tapes are now used for electric device applications. The residual stress/strain induced in HTS coating films in CC tapes during cool down influences the critical current, Ic, and should be investigated. In this study, the thermal residual stress/strain induced in the REBCO coating film was calculated from deposition temperature (1073 K) to 77 K by thermo-mechanical analysis and numerical simulation. Additionally, the improvement in irreversible strain limit, εirr., with copper electroplating has been investigated.
Keywords :
coatings; critical current density (superconductivity); high-temperature superconductors; internal stresses; HTS coating films; REBCO coated conductor tapes; critical current; mechanical properties; thermal residual stress/strain; Coatings; Copper; Integrated circuits; Residual stresses; Strain; Yttrium barium copper oxide; Critical current; REBCO; mechanical properties; residual strain; stress;
Journal_Title :
Applied Superconductivity, IEEE Transactions on
DOI :
10.1109/TASC.2013.2292746
