We studied how the field-trapping capability decays with the number of trapped-field measurements for bulk Y-Ba-Cu-O samples with and without resin impregnation. The field-trapping capability decayed with the number of measurement for a bare bulk superconductor, while no degradation was observed in the bulk impregnated with resin. We then performed numerical simulations for the thermal stresses of such bulk superconductors using the finite-element method. The thermal tensional stress of a bulk Y-Ba-Cu-O without resin reached 224 MPa, while that of the bulk covered with resin 0.5 mm in thickness was only 27 MPa. This was responsible for an improved durability against repetitive thermal cycles in the sample with resin impregnation.
|ジャーナル||Physica C: Superconductivity and its applications|
|出版ステータス||Published - 2003 10|
|イベント||Proceedings of the 15th International Symposium on Superconduc - Yokohama, Japan|
継続期間: 2002 11 11 → 2002 11 13
ASJC Scopus subject areas