コンクリート診断用マイクロ波回折トモグラフィのための逐次推定法

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: 2017/08/01

タイトル(英語): Successive Estimation Technique in Microwave Tomography for Concrete Diagnosis

著者名: 孟　志奇（福岡大学），圓谷　友紀（福岡大学）

著者名(英語): Zhiqi Meng (Fukuoka University), Tomonori Tsuburaya (Fukuoka University)

キーワード: コンクリート診断，回折トモグラフィ，逐次推定法　　concrete diagnosis，tomography，successive estimation technique

要約(英語): Techniques for concrete diagnosis are needed in construction industry because degradation could occur unseen in concrete. Microwave tomography is one of hopeful techniques for concrete diagnosis. Because usually a target of concrete diagnosis cannot be separated from the concrete structure and taken into a radio wave darkroom for measuring, the time of observing wave scattering has to be limited to eliminate the influence of obstacles outside the computational domain in getting tomography. As a result, a part of the concrete target in the computational domain is un-reconstructable. However, in a concrete diagnosis, the reconstructable zone cannot be recognized in advance, because the velocity of wave propagating through the concrete body is unknown. It is one of the key problems of microwave tomography in concrete diagnosis. This paper proposes a “Successive Estimation Technique” to solve the problem. Successive estimation technique is an iteration method to reconstruct the target part by part, by using “time-divided” information of scattering waves. It is suitable for microwave tomography in concrete diagnosis because the reconstructable and un-reconstructable zones can be distinguished automatically, and good reconstructed images are obtained efficiently, even in a noise contamination case.

本誌: 電気学会論文誌A（基礎・材料・共通部門誌） Vol.137 No.8 （2017） 特集：磁気センサの高機能化と応用技術の新展開

本誌掲載ページ: 497-503 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/137/8/137_497/_article/-char/ja/