Measurement of iron-plate thickness using HTS coil

Tomoki Ishida, Teruyoshi Sasayama, Masaaki Matsuo, Keiji Enpuku

研究成果: 著書/レポートタイプへの貢献会議での発言

1 引用 (Scopus)

抄録

Eddy current testing (ECT) has been widely used for the nondestructive evaluation of metallic plates or pipes. One of the methods in ECT is to measure the change of coil impedance that is caused by the metallic plate below the coil. We applied this method to estimate the thickness of an iron plate. In this case, low-frequency measurement is required in order to avoid the skin effect. At low frequencies, however, coil resistance dominates the coil impedance, and it becomes difficult to measure small changes in coil impedance. Therefore, we applied a high-temperature superconducting (HTS) coil in order to realize low coil resistance. In the experiment, changes in inductance L and resistance R of the coil were measured when the iron plate was set at 20 mm below the HTS coil. The range of the measurement frequency was chosen from 2 to 15 Hz, and the thickness of the plate was changed from 6 to 22 mm. It was shown that changes in R were clearly related to the thickness of the iron plate. Therefore, we could determine the thickness of the iron plate. Numerical simulation using the finite element method was also performed to analyze the experimental results.

元の言語英語
ホスト出版物のタイトル2015 15th International Superconductive Electronics Conference, ISEC 2015
出版者Institute of Electrical and Electronics Engineers Inc.
ISBN(電子版)9781467383486
DOI
出版物ステータス出版済み - 1 14 2016
イベント15th International Superconductive Electronics Conference, ISEC 2015 - Nagoya, 日本
継続期間: 7 6 20157 9 2015

その他

その他15th International Superconductive Electronics Conference, ISEC 2015
日本
Nagoya
期間7/6/157/9/15

Fingerprint

Iron
Eddy current testing
Temperature
Skin effect
Inductance
Pipe
Finite element method
Superconducting coils
Computer simulation
Experiments

All Science Journal Classification (ASJC) codes

  • Electrical and Electronic Engineering
  • Electronic, Optical and Magnetic Materials

これを引用

Ishida, T., Sasayama, T., Matsuo, M., & Enpuku, K. (2016). Measurement of iron-plate thickness using HTS coil. : 2015 15th International Superconductive Electronics Conference, ISEC 2015 [7383469] Institute of Electrical and Electronics Engineers Inc.. https://doi.org/10.1109/ISEC.2015.7383469

Measurement of iron-plate thickness using HTS coil. / Ishida, Tomoki; Sasayama, Teruyoshi; Matsuo, Masaaki; Enpuku, Keiji.

2015 15th International Superconductive Electronics Conference, ISEC 2015. Institute of Electrical and Electronics Engineers Inc., 2016. 7383469.

研究成果: 著書/レポートタイプへの貢献会議での発言

Ishida, T, Sasayama, T, Matsuo, M & Enpuku, K 2016, Measurement of iron-plate thickness using HTS coil. : 2015 15th International Superconductive Electronics Conference, ISEC 2015., 7383469, Institute of Electrical and Electronics Engineers Inc., 15th International Superconductive Electronics Conference, ISEC 2015, Nagoya, 日本, 7/6/15. https://doi.org/10.1109/ISEC.2015.7383469
Ishida T, Sasayama T, Matsuo M, Enpuku K. Measurement of iron-plate thickness using HTS coil. : 2015 15th International Superconductive Electronics Conference, ISEC 2015. Institute of Electrical and Electronics Engineers Inc. 2016. 7383469 https://doi.org/10.1109/ISEC.2015.7383469
Ishida, Tomoki ; Sasayama, Teruyoshi ; Matsuo, Masaaki ; Enpuku, Keiji. / Measurement of iron-plate thickness using HTS coil. 2015 15th International Superconductive Electronics Conference, ISEC 2015. Institute of Electrical and Electronics Engineers Inc., 2016.
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