ガタ信号を抑制する上置型渦電流探傷プローブの最適設計

カテゴリ: 論文誌(論文単位)

グループ名: 【E】センサ・マイクロマシン部門

発行日: 2024/08/01

タイトル(英語): Optimizing Surface Type Eddy Current Probe Design with Dual Induction for Wobble Noise Suppression

著者名: 小林　孝行（職業能力開発総合大学校），小坂　大吾（職業能力開発総合大学校），熊倉　裕二（テックス理研(株)）

著者名(英語): Takayuki Kobayashi (Polytechnic University), Daigo Kosaka (Polytechnic University), Yuji Kumakura (Tex Riken Co., Ltd.)

キーワード: 二重誘導，渦電流探傷，非破壊検査，表面検査，振動信号抑制　　dual induction，eddy current testing (ECT)，non-destructive testing (NDT)，surface inspection，vibration signal suppression

要約(英語): In eddy current testing, probe lift-off and probe wobble noise is detected, as well as the flaw signal, and the noise is often larger than the flaw signal. In order to suppress this noise, signal processing and probe design have been devised. In this paper, surface eddy current probe with dual induction is proposed and its noise suppression effect is explained using numerical analysis and experimental results. The novelty lies in the application of the dual induction method to surface eddy current probe and the use of phase shifters during the optimal design of the coil geometry. The paper begins with a numerical analysis that shows the effect of the dual induction method on the noise suppression of the probe, which has not been observed in the encircling probe. The paper first confirms the characteristic of the phase shifter, and clarifies the necessity of the phase shifter since the phase is not 180° symmetrical when the intensity ratio becomes the most constant. The optimal design obtained by numerical analysis was used to make a probe, and it was clarified that the optimal design showed a suppression effect of up to 94% in actual measurements.

本誌: 電気学会論文誌E（センサ・マイクロマシン部門誌） Vol.144 No.8 （2024）

本誌掲載ページ: 225-230 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/ieejsmas/144/8/144_225/_article/-char/ja/