Abstract
In order to investigate the compressive mechanical characteristics of Sm123 single-grain bulk superconductors fabricated by TSMG method, compressive tests in the direction parallel and perpendicular to the c-axis have been carried out by using small specimens cut from the bulk samples. Stress-strain curves in the direction perpendicular to the c-axis were almost linear. The Young's moduli measured were 155-165 GPa. In the case of loading parallel to the c-axis, the curves were exponential in the low stress region. As the stress increased, they tended to a linear relation. The apparent Young's modulus in this region was 75-110 GPa. These characteristics are mainly ascribed to the closure behavior of pre-existing micro-cracks perpendicular to the c-axis. The average fracture strength in the direction of c-axis, 350-400 MPa, was larger than that perpendicular to it, 235-275 MPa. Specimens in the former were generally broken into great many small pieces while those in the latter were broken into some parts by lateral cracking. The compressive Young's modulus and the fracture strength for each direction were higher than those evaluated by the tensile loading, respectively. The effects of specimen length on the compressive mechanical properties were also discussed.
| Original language | English |
|---|---|
| Pages (from-to) | 1114-1117 |
| Number of pages | 4 |
| Journal | IEEE Transactions on Applied Superconductivity |
| Volume | 14 |
| Issue number | 2 |
| DOIs | |
| Publication status | Published - 2004 Jun |
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Keywords
- Bulk superconductors
- Compressive loading
- Mechanical properties
- Sm123
ASJC Scopus subject areas
- Electrical and Electronic Engineering
- Physics and Astronomy (miscellaneous)
Cite this
Deformation and fracture behavior of Sm123 bulk superconductors by compressive loading at room temperature. / Kan, R.; Katagiri, K.; Murakami, A.; Kasaba, K.; Shoji, Y.; Noto, K.; Sakai, Naomichi; Murakami, Masato.
In: IEEE Transactions on Applied Superconductivity, Vol. 14, No. 2, 06.2004, p. 1114-1117.Research output: Contribution to journal › Article
}
TY - JOUR
T1 - Deformation and fracture behavior of Sm123 bulk superconductors by compressive loading at room temperature
AU - Kan, R.
AU - Katagiri, K.
AU - Murakami, A.
AU - Kasaba, K.
AU - Shoji, Y.
AU - Noto, K.
AU - Sakai, Naomichi
AU - Murakami, Masato
PY - 2004/6
Y1 - 2004/6
N2 - In order to investigate the compressive mechanical characteristics of Sm123 single-grain bulk superconductors fabricated by TSMG method, compressive tests in the direction parallel and perpendicular to the c-axis have been carried out by using small specimens cut from the bulk samples. Stress-strain curves in the direction perpendicular to the c-axis were almost linear. The Young's moduli measured were 155-165 GPa. In the case of loading parallel to the c-axis, the curves were exponential in the low stress region. As the stress increased, they tended to a linear relation. The apparent Young's modulus in this region was 75-110 GPa. These characteristics are mainly ascribed to the closure behavior of pre-existing micro-cracks perpendicular to the c-axis. The average fracture strength in the direction of c-axis, 350-400 MPa, was larger than that perpendicular to it, 235-275 MPa. Specimens in the former were generally broken into great many small pieces while those in the latter were broken into some parts by lateral cracking. The compressive Young's modulus and the fracture strength for each direction were higher than those evaluated by the tensile loading, respectively. The effects of specimen length on the compressive mechanical properties were also discussed.
AB - In order to investigate the compressive mechanical characteristics of Sm123 single-grain bulk superconductors fabricated by TSMG method, compressive tests in the direction parallel and perpendicular to the c-axis have been carried out by using small specimens cut from the bulk samples. Stress-strain curves in the direction perpendicular to the c-axis were almost linear. The Young's moduli measured were 155-165 GPa. In the case of loading parallel to the c-axis, the curves were exponential in the low stress region. As the stress increased, they tended to a linear relation. The apparent Young's modulus in this region was 75-110 GPa. These characteristics are mainly ascribed to the closure behavior of pre-existing micro-cracks perpendicular to the c-axis. The average fracture strength in the direction of c-axis, 350-400 MPa, was larger than that perpendicular to it, 235-275 MPa. Specimens in the former were generally broken into great many small pieces while those in the latter were broken into some parts by lateral cracking. The compressive Young's modulus and the fracture strength for each direction were higher than those evaluated by the tensile loading, respectively. The effects of specimen length on the compressive mechanical properties were also discussed.
KW - Bulk superconductors
KW - Compressive loading
KW - Mechanical properties
KW - Sm123
UR - http://www.scopus.com/inward/record.url?scp=4344662726&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=4344662726&partnerID=8YFLogxK
U2 - 10.1109/TASC.2004.830432
DO - 10.1109/TASC.2004.830432
M3 - Article
AN - SCOPUS:4344662726
VL - 14
SP - 1114
EP - 1117
JO - IEEE Transactions on Applied Superconductivity
JF - IEEE Transactions on Applied Superconductivity
SN - 1051-8223
IS - 2
ER -