Reliability of mechanical properties for bulk superconductors with resin impregnation

被引：25

作者：

Tomita, M

Murakami, M

Katagiri, K

机构：

[1] ISTEC, Superconduct Res Lab, Div 3, Minato Ku, Tokyo 1050023, Japan

[2] Iwate Univ, Fac Engn, Morioka, Iwate 0208551, Japan

来源：

PHYSICA C-SUPERCONDUCTIVITY AND ITS APPLICATIONS | 2002年 / 378卷

关键词：

bulk superconductor; mechanical property; epoxy resins; Weibull coefficient;

D O I：

10.1016/S0921-4534(02)01543-5

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

We have studied the mechanical properties of Y-Ba-Cu-O rods with and without resin impregnation using a threepoint bending test. The reliability of resin impregnation was evaluated using the Weibull distribution function. The Weibull coefficient for the resin-impregnated bulk was 16.03 at 77 K. In order to obtain more reliable data, the bending strengths were converted into the tensile strengths by considering a difference in the effective volume. It was confirmed that the tensile strengths of bulk YBCO could be enhanced by more than four times with resin impregnation. It was also confirmed that resin-impregnated Y-Ba-Cu-O exhibited a high Weibull coefficient and thus a high reliability for practical engineering applications. (C) 2002 Elsevier Science B.V. All rights reserved.

引用

页码：783 / 787

页数：5

共 11 条

[1]

HARADA S, 1991, J MACHINE SOC, V57, P173

[2]

*JIS, 1625 JIS

[3] YBCO bulk of the superconducting bearing for a 10 kWh flywheel [J].

Matsunaga, K ;

Tomita, M ;

Yamachi, N ;

Iida, K ;

Yoshioka, J ;

Murakami, M .

SUPERCONDUCTOR SCIENCE & TECHNOLOGY, 2002, 15 (05) :842-845

[4] PROCESSING AND PROPERTIES OF QMG MATERIALS [J].

MORITA, M ;

SAWAMURA, M ;

TAKEBAYASHI, S ;

KIMURA, K ;

TESHIMA, H ;

TANAKA, M ;

MIYAMOTO, K ;

HASHIMOTO, M .

PHYSICA C, 1994, 235 :209-212

[5] A NEW PROCESS WITH THE PROMISE OF HIGH-JC IN OXIDE SUPERCONDUCTORS [J].

MURAKAMI, M ;

MORITA, M ;

DOI, K ;

MIYAMOTO, K .

JAPANESE JOURNAL OF APPLIED PHYSICS PART 1-REGULAR PAPERS SHORT NOTES & REVIEW PAPERS, 1989, 28 (07) :1189-1194

[6]

NISHIJIMA N, 2001, P 13 S EL DYN, P631

[7] DAMAGE CAUSED BY MAGNETIC PRESSURE AT HIGH TRAPPED FIELD IN QUASI-PERMANENT MAGNETS COMPOSED OF MELT-TEXTURED Y-BA-CU-O SUPERCONDUCTOR [J].

REN, Y ;

WEINSTEIN, R ;

LIU, J ;

SAWH, RP ;

FOSTER, C .

PHYSICA C, 1995, 251 (1-2) :15-26

[8] Improvement of the mechanical properties of bulk superconductors with resin impregnation [J].

Tomita, M ;

Murakami, M .

SUPERCONDUCTOR SCIENCE & TECHNOLOGY, 2000, 13 (06) :722-724

[9] Mechanical persistent current switch made of resin-impregnated bulk superconductors [J].

Tomita, M ;

Murakami, M ;

Nariki, S ;

Sawa, K .

SUPERCONDUCTOR SCIENCE & TECHNOLOGY, 2002, 15 (05) :846-849

[10] Resin-impregnated bulk YBCO current leads for Maglev [J].

Tomita, M ;

Nagashima, K ;

Murakami, M ;

Herai, T .

PHYSICA C-SUPERCONDUCTIVITY AND ITS APPLICATIONS, 2001, 357 (SUPPL. 2) :832-836

← 1 2 →