TY - JOUR
T1 - Low temperature mechanical properties of Y123 bulk superconductor fabricated by the modified QMG process
AU - Murakami, A.
AU - Katagiri, K.
AU - Kasaba, K.
AU - Noto, K.
AU - Teshima, H.
AU - Sawamura, M.
AU - Sakai, N.
AU - Murakami, M.
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 and Japan Science and Technology Corporation under the Joint-research Project for Regional Intensive in Iwate Prefecture on “Development of practical applications of magnetic field technology for use in the region and in everyday living”.
Copyright:
Copyright 2008 Elsevier B.V., All rights reserved.
PY - 2004/10
Y1 - 2004/10
N2 - The monotonic and the repeated bending tests on the Y123 single grain bulk superconductor sample were carried out. The average Young's modulus at liquid nitrogen temperature (LNT), 148 GPa, was higher than that at room temperature (RT), 132 GPa. The average bending strength at LNT, 90 MPa, was also higher than that at RT, 74 MPa. The Weibull coefficient for the bending strength at RT, 17.6, was significantly larger than that at LNT, 6.1. The specimen cut from the bottom region of the bulk superconductor showed slightly higher value of the Young's modulus and lower value of the bending strength. The fatigue endurance limit for the repeated pulsating loading up to 5×104 cycles at LNT, 70 MPa, was about 80% of the bending strength.
AB - The monotonic and the repeated bending tests on the Y123 single grain bulk superconductor sample were carried out. The average Young's modulus at liquid nitrogen temperature (LNT), 148 GPa, was higher than that at room temperature (RT), 132 GPa. The average bending strength at LNT, 90 MPa, was also higher than that at RT, 74 MPa. The Weibull coefficient for the bending strength at RT, 17.6, was significantly larger than that at LNT, 6.1. The specimen cut from the bottom region of the bulk superconductor showed slightly higher value of the Young's modulus and lower value of the bending strength. The fatigue endurance limit for the repeated pulsating loading up to 5×104 cycles at LNT, 70 MPa, was about 80% of the bending strength.
KW - Bending strength
KW - Bulk superconductor
KW - Cryogenic temperature
KW - Modified QMG
KW - Y123
KW - Young's modulus
UR - http://www.scopus.com/inward/record.url?scp=4644259596&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=4644259596&partnerID=8YFLogxK
U2 - 10.1016/j.physc.2004.01.087
DO - 10.1016/j.physc.2004.01.087
M3 - Article
AN - SCOPUS:4644259596
SN - 0921-4534
VL - 412-414
SP - 673
EP - 677
JO - Physica C: Superconductivity and its Applications
JF - Physica C: Superconductivity and its Applications
IS - SPEC. ISS.
ER -