電磁波伝搬特性を用いた金属管内の欠陥検出法

カテゴリ: 論文誌(論文単位)

グループ名: 【D】産業応用部門

発行日: 2016/05/01

タイトル(英語): Defect Detection Method for Metallic Tubes Using Electromagnetic Wave Propagation Characteristics

著者名: 竹内　良（群馬大学大学院理工学府），本島　邦行（群馬大学大学院理工学府），羽賀　望（群馬大学大学院理工学府）

著者名(英語): Ryo Takeuchi (Graduate School of Engineering, Gunma University), Kuniyuki Motojima (Graduate School of Engineering, Gunma University), Nozomi Haga (Graduate School of Engineering, Gunma University)

キーワード: 欠陥検出，金属管，非破壊検査，電磁波伝搬　　defect detection，metallic tube，non-destructive inspection (NDI)，electromagnetic wave propagation

要約(英語): Serious defects may occur in metallic tubes used in factories and power plants owing to long-term usage. Until now, various non-destructive inspection (NDI) methods have been proposed to prevent accidents caused by deformation. However, these conventional methods require longer detection times for very long tubes. Therefore, to overcome this limitation, we propose a new detection method using electromagnetic wave propagation characteristics. In the proposed method, metallic tubes are regarded as waveguides, and we can detect defects based on the propagating electromagnetic waves. To verify this method, we conducted experiments using a vector network analyzer. As a result, we found that the proposed method is effective for detecting defects such as foreign matter and cracks, and for estimating the location and direction of the cracks. Furthermore, the proposed method is effective even if there is a bend or a branch in the metallic tubes.

本誌: 電気学会論文誌D（産業応用部門誌） Vol.136 No.5 （2016）

本誌掲載ページ: 364-372 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/ieejias/136/5/136_364/_article/-char/ja/