| Presentation | 2011-01-24 Non-destructive evaluation of multilayer parallel conductor using an HTS SQUID gradiometer Joji KAWANO, Akira TSUKAMOTO, Seiji ADACHI, Yasuo OSHIKUBO, Tsunehiro HATO, Keiichi TANABE, |
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| Abstract(in Japanese) | (See Japanese page) |
| Abstract(in English) | With the aim of application to non-destructive evaluation (NDE) of electric power equipments with Y-based superconducting tapes or coated conductors, we examined NDE of multilayer parallel conductors using an eddy current method based on high-temperature superconducting SQUID gradiometer. As test samples having structures close to the superconducting power equipments, we fabricated multilayer parallel conductors consisting of two parallel conductor layers of 5 or 10 mm wide, 70μm thick copper tapes and 5 or 10 mm thick intermediate insulating layer, and tried to detect a tape break in the lower parallel conductor. For the case of 10 mm wide copper tapes which are much wider than pickup coils of the gradiometer, the two-dimensional image of detected signals became rather complicated due to periodic signals from the upper parallel conductor layer. By analyzing the profiles of SQUID signals, we successfully detected a tape break in the lower layer below the upper parallel conductor layer and 10 mm thick insulating layer. On the other hand, we could not detect a break in a 5 mm wide copper tape of the lower parallel conductor, possibly due to insufficient amount of eddy current generated by a double-D induction coil. |
| Keyword(in Japanese) | (See Japanese page) |
| Keyword(in English) | Josephson junction / SQUID / Multilayer structure / Non-Destructive Evaluation / parallel conductor |
| Paper # | SCE2010-37 |
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| Conference Information | |
| Committee | SCE |
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| Conference Date | 2011/1/17(1days) |
| Place (in Japanese) | (See Japanese page) |
| Place (in English) | |
| Topics (in Japanese) | (See Japanese page) |
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| Paper Information | |
| Registration To | Superconductive Electronics (SCE) |
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| Language | JPN |
| Title (in Japanese) | (See Japanese page) |
| Sub Title (in Japanese) | (See Japanese page) |
| Title (in English) | Non-destructive evaluation of multilayer parallel conductor using an HTS SQUID gradiometer |
| Sub Title (in English) | |
| Keyword(1) | Josephson junction |
| Keyword(2) | SQUID |
| Keyword(3) | Multilayer structure |
| Keyword(4) | Non-Destructive Evaluation |
| Keyword(5) | parallel conductor |
| 1st Author's Name | Joji KAWANO |
| 1st Author's Affiliation | SRL-ISTEC() |
| 2nd Author's Name | Akira TSUKAMOTO |
| 2nd Author's Affiliation | SRL-ISTEC |
| 3rd Author's Name | Seiji ADACHI |
| 3rd Author's Affiliation | SRL-ISTEC |
| 4th Author's Name | Yasuo OSHIKUBO |
| 4th Author's Affiliation | SRL-ISTEC |
| 5th Author's Name | Tsunehiro HATO |
| 5th Author's Affiliation | SRL-ISTEC |
| 6th Author's Name | Keiichi TANABE |
| 6th Author's Affiliation | SRL-ISTEC |
| Date | 2011-01-24 |
| Paper # | SCE2010-37 |
| Volume (vol) | vol.110 |
| Number (no) | 385 |
| Page | pp.pp.- |
| #Pages | 6 |
| Date of Issue | |