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| Presentation | 2012-01-26 10:30 Development of non-destructive evaluation system using an HTS-SQUID gradiometer for magnetized materials Joji Kawano, Akira Tsukamoto, Seiji Adachi, Yasuo Oshikubo, Tsunehiro Hato, Keiichi Tanabe (SRL)  SCE2011-19 Link to ES Tech. Rep. Archives: SCE2011-19 |
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| Abstract | (in Japanese) | (See Japanese page) |
| (in English) | Superconducting Quantum Interference Device (SQUID) sensor is one of the most sensitive magnetometers. Moreover, since SQUID has high magnetic sensitivity even at low frequencies, eddy-current non-destructive evaluation (NDE) using a SQUID sensor is expected to be applied to detection of deep-lying defects in conductive materials. However, in our conventional SQUID-NDE system, the SQUID sensor could not work correctly, when conductive materials have surface magnetization larger than 0.1 mT. In the present study, we have developed a new eddy-current non-destructive evaluation system using an HTS SQUID gradiometer with an external Cu pickup coil. By employing the external pickup coil method, the SQUID sensor can be set away from magnetized material and set inside a magnetic shield made of an HTS material. It makes possible to operate the SQUID correctly and to observe defect-induced magnetic signals from conductive materials with surface magnetization up to 10 mT, although applicable bandwidth will be narrower due to the existence of normal conductivity. This result indicates the new SQUID-NDE system can detect defects located in the ferromagnetic materials that ever seem difficult to be observed. | |
| Keyword | (in Japanese) | (See Japanese page) |
| (in English) | Josephson junction / SQUID / Non-Destructive Evaluation / Magnetized material / / / / | |
| Reference Info. | IEICE Tech. Rep., vol. 111, no. 418, SCE2011-19, pp. 1-6, Jan. 2012. | |
| Paper # | SCE2011-19 | |
| Date of Issue | 2012-01-19 (SCE) | |
| ISSN | Print edition: ISSN 0913-5685 Online edition: ISSN 2432-6380 | |
| Copyright and reproduction |
All rights are reserved and no part of this publication may be reproduced or transmitted in any form or by any means, electronic or mechanical, including photocopy, recording, or any information storage and retrieval system, without permission in writing from the publisher. Notwithstanding, instructors are permitted to photocopy isolated articles for noncommercial classroom use without fee. (License No.: 10GA0019/12GB0052/13GB0056/17GB0034/18GB0034) | |
| Download PDF | SCE2011-19 Link to ES Tech. Rep. Archives: SCE2011-19 |
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| Conference Information | |
| Committee | SCE |
| Conference Date | 2012-01-26 - 2012-01-26 |
| Place (in Japanese) | (See Japanese page) |
| Place (in English) | Kikai-Shinko-Kaikan Bldg. B3-2 |
| Topics (in Japanese) | (See Japanese page) |
| Topics (in English) | Superconducting sensing technologies and their applications, etc. |
| Paper Information | |
| Registration To | SCE |
| Conference Code | 2012-01-SCE |
| Language | Japanese |
| Title (in Japanese) | (See Japanese page) |
| Sub Title (in Japanese) | (See Japanese page) |
| Title (in English) | Development of non-destructive evaluation system using an HTS-SQUID gradiometer for magnetized materials |
| Sub Title (in English) | |
| Keyword(1) | Josephson junction |
| Keyword(2) | SQUID |
| Keyword(3) | Non-Destructive Evaluation |
| Keyword(4) | Magnetized material |
| Keyword(5) | |
| Keyword(6) | |
| Keyword(7) | |
| Keyword(8) | |
| 1st Author's Name | Joji Kawano |
| 1st Author's Affiliation | Superconductivity Reaserch Laboratory (SRL) |
| 2nd Author's Name | Akira Tsukamoto |
| 2nd Author's Affiliation | Superconductivity Reaserch Laboratory (SRL) |
| 3rd Author's Name | Seiji Adachi |
| 3rd Author's Affiliation | Superconductivity Reaserch Laboratory (SRL) |
| 4th Author's Name | Yasuo Oshikubo |
| 4th Author's Affiliation | Superconductivity Reaserch Laboratory (SRL) |
| 5th Author's Name | Tsunehiro Hato |
| 5th Author's Affiliation | Superconductivity Reaserch Laboratory (SRL) |
| 6th Author's Name | Keiichi Tanabe |
| 6th Author's Affiliation | Superconductivity Reaserch Laboratory (SRL) |
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| Speaker | Author-1 |
| Date Time | 2012-01-26 10:30:00 |
| Presentation Time | 25 minutes |
| Registration for | SCE |
| Paper # | SCE2011-19 |
| Volume (vol) | vol.111 |
| Number (no) | no.418 |
| Page | pp.1-6 |
| #Pages | 6 |
| Date of Issue | 2012-01-19 (SCE) |
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