Effect of resin layer on the thermal stress of bulk superconductors

M. Tomita, Masato Murakami

Research output: Contribution to journalArticle

11 Citations (Scopus)

Abstract

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
Volume392-396
Issue numberPART 1
DOIs
Publication statusPublished - 2003 Oct
Externally publishedYes

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Keywords

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

ASJC Scopus subject areas

  • Condensed Matter Physics

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