Improvement of the trapping capacity of bulk superconductor with resin impregnation

M. Tomita; M. Murakami

doi:10.1109/TASC.2003.812112

Improvement of the trapping capacity of bulk superconductor with resin impregnation

M. Tomita, M. Murakami

Research output: Contribution to journal › Conference article › peer-review

3 Citations (Scopus)

Abstract

We have characterized the mechanical properties of a large-grain Y-Ba-Cu-O 46 mm in diameter using the strain gauges. The electromagnetic stress was imposed on the bulk samples by reducing the external field from 7 T to 0 T at 65 K. The sample without resin was broken during the field-decreasing process with the maximum stress reaching 150 MPa. In contrast, the maximum stress was only 40 MPa for the resin-impregnated sample covered with the carbon fiber fabrics. In order to confirm the improvement of mechanical properties through resin impregnation combined with carbon fiber fabric wrapping, we measured trapped fields at lower temperatures. Resin-impregnated Y-Ba-Cu-O bulk 2.4 cm in diameter Sm-Ba-Cu-O bulk 2.4 cm in diameter wrapped with carbon fiber fabric could trap a field of 13.55 T at 36 K and 13.69 T at 47 K, respectively.

Original language	English
Pages (from-to)	3095-3098
Number of pages	4
Journal	IEEE Transactions on Applied Superconductivity
Volume	13
Issue number	2 III
DOIs	https://doi.org/10.1109/TASC.2003.812112
Publication status	Published - 2003 Jun 1
Externally published	Yes
Event	2002 Applied Superconductivity Conference - Houston, TX, United States Duration: 2002 Aug 4 → 2002 Aug 9

Keywords

Critical current
Epoxy resin
High-T bulk superconductor
Mechanical property

ASJC Scopus subject areas

Electronic, Optical and Magnetic Materials
Condensed Matter Physics
Electrical and Electronic Engineering

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title = "Improvement of the trapping capacity of bulk superconductor with resin impregnation",

abstract = "We have characterized the mechanical properties of a large-grain Y-Ba-Cu-O 46 mm in diameter using the strain gauges. The electromagnetic stress was imposed on the bulk samples by reducing the external field from 7 T to 0 T at 65 K. The sample without resin was broken during the field-decreasing process with the maximum stress reaching 150 MPa. In contrast, the maximum stress was only 40 MPa for the resin-impregnated sample covered with the carbon fiber fabrics. In order to confirm the improvement of mechanical properties through resin impregnation combined with carbon fiber fabric wrapping, we measured trapped fields at lower temperatures. Resin-impregnated Y-Ba-Cu-O bulk 2.4 cm in diameter Sm-Ba-Cu-O bulk 2.4 cm in diameter wrapped with carbon fiber fabric could trap a field of 13.55 T at 36 K and 13.69 T at 47 K, respectively.",

keywords = "Critical current, Epoxy resin, High-T bulk superconductor, Mechanical property",

author = "M. Tomita and M. Murakami",

year = "2003",

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journal = "IEEE Transactions on Applied Superconductivity",

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number = "2 III",

note = "2002 Applied Superconductivity Conference ; Conference date: 04-08-2002 Through 09-08-2002",

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TY - JOUR

T1 - Improvement of the trapping capacity of bulk superconductor with resin impregnation

AU - Tomita, M.

AU - Murakami, M.

PY - 2003/6/1

Y1 - 2003/6/1

N2 - We have characterized the mechanical properties of a large-grain Y-Ba-Cu-O 46 mm in diameter using the strain gauges. The electromagnetic stress was imposed on the bulk samples by reducing the external field from 7 T to 0 T at 65 K. The sample without resin was broken during the field-decreasing process with the maximum stress reaching 150 MPa. In contrast, the maximum stress was only 40 MPa for the resin-impregnated sample covered with the carbon fiber fabrics. In order to confirm the improvement of mechanical properties through resin impregnation combined with carbon fiber fabric wrapping, we measured trapped fields at lower temperatures. Resin-impregnated Y-Ba-Cu-O bulk 2.4 cm in diameter Sm-Ba-Cu-O bulk 2.4 cm in diameter wrapped with carbon fiber fabric could trap a field of 13.55 T at 36 K and 13.69 T at 47 K, respectively.

AB - We have characterized the mechanical properties of a large-grain Y-Ba-Cu-O 46 mm in diameter using the strain gauges. The electromagnetic stress was imposed on the bulk samples by reducing the external field from 7 T to 0 T at 65 K. The sample without resin was broken during the field-decreasing process with the maximum stress reaching 150 MPa. In contrast, the maximum stress was only 40 MPa for the resin-impregnated sample covered with the carbon fiber fabrics. In order to confirm the improvement of mechanical properties through resin impregnation combined with carbon fiber fabric wrapping, we measured trapped fields at lower temperatures. Resin-impregnated Y-Ba-Cu-O bulk 2.4 cm in diameter Sm-Ba-Cu-O bulk 2.4 cm in diameter wrapped with carbon fiber fabric could trap a field of 13.55 T at 36 K and 13.69 T at 47 K, respectively.

KW - Critical current

KW - Epoxy resin

KW - High-T bulk superconductor

KW - Mechanical property

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