テラヘルツ波の反射解析による誘電体層の剥離検出

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: 2013/08/01

タイトル(英語): Detection of Delamination of Dielectric Layer by Reflection Analysis of Terahertz Waves

著者名: 福地　哲生（電力中央研究所 電力技術研究所），布施　則一（電力中央研究所 電力技術研究所），水野　麻弥（情報通信研究機構 電磁波計測研究所），福永　香（情報通信研究機構 電磁波計測研究所）

著者名(英語): Tetsuo Fukuchi (Central Research Institute of Electric Power Industry), Norikazu Fuse (Central Research Institute of Electric Power Industry), Maya Mizuno (National Institute of Information and Communications Technology), Kaori Fukunaga (National Institute of Information and Communications Technology)

キーワード: テラヘルツ波，多重反射，インパルス応答，誘電体，剥離，非破壊検査　　terahertz wave，multiple reflection，impulse response，dielectric material，delamination，nondestructive testing

要約(英語): Terahertz waves are effective for detection of delamination of dielectric coatings applied onto a metal surface. In most cases, the thickness of the air gap which results from delamination is much smaller than the spatial width of the terahertz pulse, so the reflections from the upper and lower boundaries of the air gap, and the multiple reflections within the air gap are not temporally resolved. The reflection of the terahertz pulse was calculated based on an impulse response model, which included the effects of multiple reflection. The calculation results were compared with the experimental results in the case of reflection from a three-layer structure consisting of a polyethylene plate, air gap, and metal plate. The results showed that an air gap with a thickness of about 30 μm can detected, even when the lower limit of the time-resolved measurement was 120 μm.

本誌: 電気学会論文誌A（基礎・材料・共通部門誌） Vol.133 No.8 （2013）

本誌掲載ページ: 436-444 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/133/8/133_436/_article/-char/ja/