Effect of resin layer on the thermal stress of bulk superconductors

M. Tomita, M. Murakami

Research output: Contribution to journalConference articlepeer-review

12 Citations (Scopus)


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.

Original languageEnglish
Pages (from-to)493-498
Number of pages6
JournalPhysica C: Superconductivity and its applications
Issue numberPART 1
Publication statusPublished - 2003 Oct
Externally publishedYes
EventProceedings of the 15th International Symposium on Superconduc - Yokohama, Japan
Duration: 2002 Nov 112002 Nov 13


  • Bulk superconductor
  • Epoxy resins
  • FEM
  • Mechanical property
  • Thermal stress

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics
  • Energy Engineering and Power Technology
  • Electrical and Electronic Engineering


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