Evaluation of Young's modulus of RE123 bulk superconductors by three point bending tests

T. Sato; K. Katagiri; T. Hokari; Y. Hatakeyama; A. Murakami; A. Nyilas; K. Kasaba; H. Teshima; H. Hirano

doi:10.1016/j.physc.2006.04.029

Evaluation of Young's modulus of RE123 bulk superconductors by three point bending tests

T. Sato, K. Katagiri^*, T. Hokari, Y. Hatakeyama, A. Murakami, A. Nyilas, K. Kasaba, H. Teshima, H. Hirano

^*Corresponding author for this work

Mechanical Engineering

Research output: Contribution to journal › Article › peer-review

6 Scopus citations

Abstract

In order to investigate the evaluation method of the Young's modulus of RE123 single-grain bulk superconductors, 3-point bending tests have been carried out at room and liquid nitrogen temperatures. An attempt to evaluate it from the measurements of deflection of the specimen with 3 mm thickness was made. The consistent stiffness of the test machine including the jig was obtained by using a dummy specimen. For the test of the bulk, increasing repeated load within a level less than the fracture load was applied to stabilize the loading condition. The Young's modulus calculated by using the deflection of the bulk specimen obtained subtracting the machine stiffness coincided with that obtained by the conventional method, where the strain gage was adhered to the specimen. The effects of specimen thickness and the oxygen annealing sequence with respect to specimen cutting were also investigated.

Original language	English
Pages (from-to)	422-426
Number of pages	5
Journal	Physica C: Superconductivity and its Applications
Volume	445-448
Issue number	1-2
DOIs	https://doi.org/10.1016/j.physc.2006.04.029
State	Published - 2006/10/01

Keywords

3-point bending test
Bulk superconductors
DyBaCuO
Young's modulus

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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10.1016/j.physc.2006.04.029

Cite this

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title = "Evaluation of Young's modulus of RE123 bulk superconductors by three point bending tests",

abstract = "In order to investigate the evaluation method of the Young's modulus of RE123 single-grain bulk superconductors, 3-point bending tests have been carried out at room and liquid nitrogen temperatures. An attempt to evaluate it from the measurements of deflection of the specimen with 3 mm thickness was made. The consistent stiffness of the test machine including the jig was obtained by using a dummy specimen. For the test of the bulk, increasing repeated load within a level less than the fracture load was applied to stabilize the loading condition. The Young's modulus calculated by using the deflection of the bulk specimen obtained subtracting the machine stiffness coincided with that obtained by the conventional method, where the strain gage was adhered to the specimen. The effects of specimen thickness and the oxygen annealing sequence with respect to specimen cutting were also investigated.",

keywords = "3-point bending test, Bulk superconductors, DyBaCuO, Young's modulus",

author = "T. Sato and K. Katagiri and T. Hokari and Y. Hatakeyama and A. Murakami and A. Nyilas and K. Kasaba and H. Teshima and H. Hirano",

note = "Funding Information: We appreciate helpful assistance in the experiment by K. Sasaki of Iwate University. This work was partly supported by grant-in-aid for scientific research, Japan Society for Promotion of Science.",

year = "2006",

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day = "1",

doi = "10.1016/j.physc.2006.04.029",

language = "英語",

volume = "445-448",

pages = "422--426",

journal = "Physica C: Superconductivity and its Applications",

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T1 - Evaluation of Young's modulus of RE123 bulk superconductors by three point bending tests

AU - Sato, T.

AU - Katagiri, K.

AU - Hokari, T.

AU - Hatakeyama, Y.

AU - Murakami, A.

AU - Nyilas, A.

AU - Kasaba, K.

AU - Teshima, H.

AU - Hirano, H.

N1 - Funding Information: We appreciate helpful assistance in the experiment by K. Sasaki of Iwate University. This work was partly supported by grant-in-aid for scientific research, Japan Society for Promotion of Science.

PY - 2006/10/1

Y1 - 2006/10/1

N2 - In order to investigate the evaluation method of the Young's modulus of RE123 single-grain bulk superconductors, 3-point bending tests have been carried out at room and liquid nitrogen temperatures. An attempt to evaluate it from the measurements of deflection of the specimen with 3 mm thickness was made. The consistent stiffness of the test machine including the jig was obtained by using a dummy specimen. For the test of the bulk, increasing repeated load within a level less than the fracture load was applied to stabilize the loading condition. The Young's modulus calculated by using the deflection of the bulk specimen obtained subtracting the machine stiffness coincided with that obtained by the conventional method, where the strain gage was adhered to the specimen. The effects of specimen thickness and the oxygen annealing sequence with respect to specimen cutting were also investigated.

AB - In order to investigate the evaluation method of the Young's modulus of RE123 single-grain bulk superconductors, 3-point bending tests have been carried out at room and liquid nitrogen temperatures. An attempt to evaluate it from the measurements of deflection of the specimen with 3 mm thickness was made. The consistent stiffness of the test machine including the jig was obtained by using a dummy specimen. For the test of the bulk, increasing repeated load within a level less than the fracture load was applied to stabilize the loading condition. The Young's modulus calculated by using the deflection of the bulk specimen obtained subtracting the machine stiffness coincided with that obtained by the conventional method, where the strain gage was adhered to the specimen. The effects of specimen thickness and the oxygen annealing sequence with respect to specimen cutting were also investigated.

KW - 3-point bending test

KW - Bulk superconductors

KW - DyBaCuO

KW - Young's modulus

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U2 - 10.1016/j.physc.2006.04.029

DO - 10.1016/j.physc.2006.04.029

M3 - 学術論文

AN - SCOPUS:33748133466

SN - 0921-4534

VL - 445-448

SP - 422

EP - 426

JO - Physica C: Superconductivity and its Applications

JF - Physica C: Superconductivity and its Applications

IS - 1-2

ER -

Evaluation of Young's modulus of RE123 bulk superconductors by three point bending tests

Abstract

Keywords

ASJC Scopus subject areas

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