Abstract
An apparatus to evaluate the strain effect of critical current, Ic, in practical superconducting wires was fabricated. The apparatus was installed in the 16.5 T superconducting magnet of High Field Laboratory for Superconducting Materials, Tohoku University. Total length of a specimen is 44 mm. Each end of it is soldered to a copper grip which also serves as a current terminal. The load is applied by moving the lever arm. The strain is measured by use of a extensometer set between the movable grip and the fixed one. The accuracy is 0.05% strain. The voltage taps are soldered at a distance of 10 mm. The capacities in load and current of the apparatus are 500 N and 200 A, respectively. A good operation is confirmed by comparing results with those in the conventional apparatus. Reasonable agreement with the data obtained at NIST in VAMAS international round robin test samples gave a proof for reliability on the apparatus. Using this apparatus, strain characteristics of a wire fabricated by liquid infiltration method is evaluated.
| Original language | English |
|---|---|
| Title of host publication | Advances in Cryogenic Engineering |
| Publisher | Publ by Plenum Publ Corp |
| Pages | 69-75 |
| Number of pages | 7 |
| Volume | 36 |
| Edition | pt A |
| ISBN (Print) | 0306435985 |
| Publication status | Published - 1990 |
| Event | Proceedings of the 8th International Cryogenic Materials Conference ICMC - Los Angeles, CA, USA Duration: 1989 Jul 24 → 1989 Jul 28 |
Other
| Other | Proceedings of the 8th International Cryogenic Materials Conference ICMC |
|---|---|
| City | Los Angeles, CA, USA |
| Period | 89/7/24 → 89/7/28 |
ASJC Scopus subject areas
- Engineering(all)