トンネル磁気抵抗センサを用いた打磁試験法の開発

カテゴリ: 論文誌(論文単位)

グループ名: 【A】基礎・材料・共通部門

発行日: 2024/08/01

タイトル(英語): Development of Magnetic Hammering Test using Tunnel Magneto-resistive Sensor

著者名: 伊藤　淳（東北大学大学院工学研究科），五十嵐　祐大（東北大学大学院工学研究科），大兼　幹彦（東北大学大学院工学研究科／東北大学先端スピントロニクス研究開発センター）

著者名(英語): Jun Ito (Graduate School of Engineering, Tohoku University), Yudai Igarashi (Graduate School of Engineering, Tohoku University), Mikihiko Oogane (Graduate School of Engineering, Tohoku University/CSIS, Tohoku University)

キーワード: トンネル磁気抵抗効果，磁気センサ，非破壊検査，打磁試験　　tunnel magneto-resistance effect，magnetic sensor，nondestructive inspection，magnetic hammering test

要約(英語): We have developed a novel nondestructive inspection technique for infrastructures using spintronics technologies. Since the tunnel magneto-resistance (TMR) effect has become dramatically more sensitive in recent years, TMR sensors can be applied to the highly sensitive nondestructive inspection named magnetic hammering test (MHT). The proposed MHT technique is based on the principle of detecting slight fluctuations in the spatial magnetic field caused by the vibration of steel materials. Since the fluctuations in the magnetic field occur with the natural vibration frequency of the steel materials, their condition can be detected from the change of natural frequency using highly sensitive TMR sensors. In this work, we have demonstrated that the size of steel plates was determined with high accuracy using the MHT technique.

本誌: 電気学会論文誌A（基礎・材料・共通部門誌） Vol.144 No.8 （2024） 特集：磁気センサと機械学習の活用技術の新展開

本誌掲載ページ: 325-330 p

原稿種別: 論文／日本語

電子版へのリンク: https://www.jstage.jst.go.jp/article/ieejfms/144/8/144_325/_article/-char/ja/