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Titolo:
Tensile testing methods of Cu/Nb3Sn superconducting wires at room temperature
Autore:
Katagiri, K; Kasaba, K; Hojo, M; Osamura, K; Sugano, M; Kimura, A; Ogata, T;
Indirizzi:
Iwate Univ, Fac Engn, Morioka, Iwate 0208551, Japan Iwate Univ Morioka Iwate Japan 0208551 ngn, Morioka, Iwate 0208551, Japan Kyoto Univ, Sakyo Ku, Kyoto 6068501, Japan Kyoto Univ Kyoto Japan 6068501 yoto Univ, Sakyo Ku, Kyoto 6068501, Japan Furukawa Elect Corp Ltd, Nikko 3211493, Japan Furukawa Elect Corp Ltd Nikko Japan 3211493 rp Ltd, Nikko 3211493, Japan Natl Res Inst Met, Tsukuba, Ibaraki 3050047, Japan Natl Res Inst Met Tsukuba Ibaraki Japan 3050047 a, Ibaraki 3050047, Japan
Titolo Testata:
PHYSICA C
, volume: 357, anno: 2001,
parte:, 2
pagine: 1302 - 1305
SICI:
0921-4534(200108)357:<1302:TTMOCS>2.0.ZU;2-V
Fonte:
ISI
Lingua:
ENG
Keywords:
Cu/Nb3Sn composite; superconducting wire; tensile test; standardization;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Physical, Chemical & Earth Sciences
Citazioni:
4
Recensione:
Indirizzi per estratti:
Indirizzo: Katagiri, K Iwate Univ, Fac Engn, 4-3-5 Ueda, Morioka, Iwate 0208551, Japan Iwate Univ 4-3-5 Ueda Morioka Iwate Japan 0208551 08551, Japan
Citazione:
K. Katagiri et al., "Tensile testing methods of Cu/Nb3Sn superconducting wires at room temperature", PHYSICA C, 357, 2001, pp. 1302-1305

Abstract

Preliminary tests for determining the procedure of round robin test on tensile testing methods of Cu/Nb3Sn composite wires at room temperature have been conducted. Two kinds of bronze processed wires were used. The followingresults were obtained. (1) The initial part of the stress-strain curve was liable to be varied. Beyond the stress level of about 80 MPa, stress-strain behaviors were basically identical regardless of the gripping method and the inter-grip distancealthough shifts in strain axis were inevitable. Pre-loading of about 40 MPa was fairly effective for obtaining a consistent stress-strain behavior for a wire. (2) A reliable modulus of elasticity could be determined using unloading curve regardless of the unloading stress level. (3) The stress-strain curves could be expressed as a simple exponential function, which fitted the experimental data fairly well excepting initial part and was useful to determine the zero strain position of the curves. (4) The 0.2% proof stresses with a coefficient of variance of less than 5%could be obtained using the zero strain position and the modulus of elasticity. (C) 2001 Elsevier Science B.V. All rights reserved.

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Documento generato il 29/03/20 alle ore 15:06:06