塗膜下腐食のテラヘルツ波非接触計測における表面散乱評価

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: 2017/03/01

タイトル(英語): Estimation of Surface Scattering Effect on Terahertz Non-contact Detection of Underfilm Corrosion

著者名: 布施　則一（（一財）電力中央研究所），福地　哲生（（一財）電力中央研究所）

著者名(英語): Norikazu Fuse (Central Research Institute of Electric Power Industry), Tetsuo Fukuchi (Central Research Institute of Electric Power Industry)

キーワード: テラヘルツ波，時間領域分光法，塗膜下腐食，散乱，表面粗さ，デコンボリューション　　terahertz waves，time domain spectroscopy，underfilm corrosion，scattering，surface roughness，deconvolution

要約(英語): Two dimensional reflection intensity distributions of terahertz wave intensity provide a direct transparent image of corrosion beneath opaque anticorrosion paint layers. However, attention needs to be paid to changes in effective reflectivity due to uneven surfaces. This study demonstrates in-situ estimation of surface roughness and reflective index by frequency analysis of the terahertz wave form reflection echoes. Deconvolution technique is applied to resolve the undulation of the waveform to separate the overlapping of the reflections from the front and back surfaces of the paint. Estimated and measured roughness values are in good agreement, to show roughness and refractive index distribution of a service-used transmission tower cross-arm.

本誌: 電気学会論文誌A（基礎・材料・共通部門誌） Vol.137 No.3 （2017）

本誌掲載ページ: 158-164 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/137/3/137_158/_article/-char/ja/