Abstract
Evaluation of the fracture toughness of a Y-Ba-Cu-O bulk superconductor with 28.6 mol% Y-211 and 15 wt.% Ag has been investigated by tensile tests at room temperature using specimens with a sharp V-notch. The notch was introduced into the specimens such that its direction of depth was parallel or perpendicular to the c-axis and the loading direction was in the a(b)-axis. Fracture toughness evaluation by three-point bending tests was also carried out. In addition, usual tensile tests and three-point bending tests were also carried out in the specimens without V-notch. The scatter of measured fracture toughness values by the bending tests, 1.6-2.1 MPa m1/2, was less as compared with that by the tensile tests, 1.1-2.5 MPa m1/2. However, the average value in tensile tests 1.9 MPa m1/2 coincided with that in bending tests. The maximum and the average value of bending strength, 109 and 104 MPa, were higher than those of tensile strength, 72 and 56 MPa, respectively.
| Original language | English |
|---|---|
| Pages (from-to) | 628-633 |
| Number of pages | 6 |
| Journal | Physica C: Superconductivity and its Applications |
| Volume | 392-396 |
| Issue number | PART 1 |
| DOIs | |
| Publication status | Published - 2003 Oct |
| Externally published | Yes |
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Keywords
- Bending test
- Fracture toughness
- Tensile test
- Y-Ba-Cu-O bulk
ASJC Scopus subject areas
- Condensed Matter Physics
Cite this
Fracture toughness evaluation of YBCO bulk superconductor. / Okudera, T.; Murakami, A.; Katagiri, K.; Kasaba, K.; Shoji, Y.; Noto, K.; Sakai, Naomichi; Murakami, Masato.
In: Physica C: Superconductivity and its Applications, Vol. 392-396, No. PART 1, 10.2003, p. 628-633.Research output: Contribution to journal › Article
}
TY - JOUR
T1 - Fracture toughness evaluation of YBCO bulk superconductor
AU - Okudera, T.
AU - Murakami, A.
AU - Katagiri, K.
AU - Kasaba, K.
AU - Shoji, Y.
AU - Noto, K.
AU - Sakai, Naomichi
AU - Murakami, Masato
PY - 2003/10
Y1 - 2003/10
N2 - Evaluation of the fracture toughness of a Y-Ba-Cu-O bulk superconductor with 28.6 mol% Y-211 and 15 wt.% Ag has been investigated by tensile tests at room temperature using specimens with a sharp V-notch. The notch was introduced into the specimens such that its direction of depth was parallel or perpendicular to the c-axis and the loading direction was in the a(b)-axis. Fracture toughness evaluation by three-point bending tests was also carried out. In addition, usual tensile tests and three-point bending tests were also carried out in the specimens without V-notch. The scatter of measured fracture toughness values by the bending tests, 1.6-2.1 MPa m1/2, was less as compared with that by the tensile tests, 1.1-2.5 MPa m1/2. However, the average value in tensile tests 1.9 MPa m1/2 coincided with that in bending tests. The maximum and the average value of bending strength, 109 and 104 MPa, were higher than those of tensile strength, 72 and 56 MPa, respectively.
AB - Evaluation of the fracture toughness of a Y-Ba-Cu-O bulk superconductor with 28.6 mol% Y-211 and 15 wt.% Ag has been investigated by tensile tests at room temperature using specimens with a sharp V-notch. The notch was introduced into the specimens such that its direction of depth was parallel or perpendicular to the c-axis and the loading direction was in the a(b)-axis. Fracture toughness evaluation by three-point bending tests was also carried out. In addition, usual tensile tests and three-point bending tests were also carried out in the specimens without V-notch. The scatter of measured fracture toughness values by the bending tests, 1.6-2.1 MPa m1/2, was less as compared with that by the tensile tests, 1.1-2.5 MPa m1/2. However, the average value in tensile tests 1.9 MPa m1/2 coincided with that in bending tests. The maximum and the average value of bending strength, 109 and 104 MPa, were higher than those of tensile strength, 72 and 56 MPa, respectively.
KW - Bending test
KW - Fracture toughness
KW - Tensile test
KW - Y-Ba-Cu-O bulk
UR - http://www.scopus.com/inward/record.url?scp=0042784822&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=0042784822&partnerID=8YFLogxK
U2 - 10.1016/S0921-4534(03)00996-1
DO - 10.1016/S0921-4534(03)00996-1
M3 - Article
VL - 392-396
SP - 628
EP - 633
JO - Physica C: Superconductivity and its Applications
JF - Physica C: Superconductivity and its Applications
SN - 0921-4534
IS - PART 1
ER -