X線CTによる不均質材料中の亀裂開口量評価

• 資料種別: 記事
• タイトル: X線CTによる不均質材料中の亀裂開口量評価
• 著者・編者: 佐藤 晃; 深堀 大介; 澤田 淳 他
• 著者標目: 佐藤 晃; 深堀 大介; 澤田 淳
• タイトル（掲載誌）: 資源と素材 : 資源・素材学会誌
• 巻号年月日等（掲載誌）: 120(6・7) 2004.6・7
• 掲載巻: 120
• 掲載号: 6・7
• 掲載ページ: 365～371
• 掲載年月日（W3CDTF）: 2004
• ISSN（掲載誌）: 0916-1740
• ISSN-L（掲載誌）: 0916-1740
• 出版事項（掲載誌）: 東京 : 資源・素材学会
• 出版地（国名コード）: JP
• 本文の言語コード: jpn
• 件名標目: 画像間差分; 岩石; 不均質製材量; Crack Opening; Image Subtraction; Rock; Heterogeneous Materials; X-ray CT
• NDLC: ZP41
• 対象利用者: 一般
• 所蔵機関: 国立国会図書館
• 請求記号: Z17-315
• 連携機関・データベース: 国立国会図書館 : 国立国会図書館雑誌記事索引; https://ndlsearch.ndl.go.jp
• 書誌ID（NDLBibID）: 7047653; http://id.ndl.go.jp/bib/7047653
• 整理区分コード: 632

• 要約等: An improved crack projection method for the analysis of open crack was introduced by applying image subtraction technique. In order to evaluate crack opening in the heterogeneous materials such as rocks, X-ray CT image subtraction method was introduced in the data processing together with necessary noise reduction method, using the 3-dimensional data given by X-ray CT. This is a promising method to analyze open cracks in the heterogeneous materials from the difference of X-ray CT images. The characteristic point of the method is that the reduction and the elimination of fatal noise related to X-ray CT images are possible and that the accurate image processing is expected. The fundamental formulae of noise reduction technique were firstly described and applicability for the rock sample was discussed. Then, formulae for X-ray CT image subtraction method were introduced as well as the necessary data processing for the crack opening measurement. In this study, artificial cracks were simulated by a couple of semilunar shaped rock samples. In order to verify the applicability of the method to the hetelogeneous materials, the rock samples were made of granite. The subtraction method was applied to the rock samples and the accuracy of the method was discussed. It was found that the influence of noises was clearly eliminated and that the crack opening distribution was accurately evaluated. This technique was also applied to the orthorhombic rock sample and it was also proved that crack opening could be evaluated by the same procedure in the case that tomography and data processing were conducted in the same condition.
• DOI: 10.2473/shigentosozai.120.365
• オンライン閲覧公開範囲: インターネット公開
• 連携機関・データベース: 科学技術振興機構 : J-STAGE; http://www.jstage.jst.go.jp

• 要約等: An improved crack projection method for the analysis of open crack was introduced by applying image subtraction technique. In order to evaluate crack opening in the heterogeneous materials such as rocks, X-ray CT image subtraction method was introduced in the data processing together with necessary noise reduction method, using the 3-dimensional data given by X-ray CT. This is a promising method to analyze open cracks in the heterogeneous materials from the difference of X-ray CT images. The characteristic point of the method is that the reduction and the elimination of fatal noise related to X-ray CT images are possible and that the accurate image processing is expected. The fundamental formulae of noise reduction technique were firstly described and applicability for the rock sample was discussed. Then, formulae for X-ray CT image subtraction method were introduced as well as the necessary data processing for the crack opening measurement. In this study, artificial cracks were simulated by a couple of semilunar shaped rock samples. In order to verify the applicability of the method to the hetelogeneous materials, the rock samples were made of granite. The subtraction method was applied to the rock samples and the accuracy of the method was discussed. It was found that the influence of noises was clearly eliminated and that the crack opening distribution was accurately evaluated. This technique was also applied to the orthorhombic rock sample and it was also proved that crack opening could be evaluated by the same procedure in the case that tomography and data processing were conducted in the same condition.
• DOI: 10.2473/shigentosozai.120.365; https://doi.org/10.2473/shigentosozai.120.365
• 関連情報（URI）: http://id.ndl.go.jp/bib/7047653; https://ndlsearch.ndl.go.jp/books/R000000004-I7047653
• 参照: Analysis of the Tracer Diffusion Phenomena through Cracks in the Porous Media by Means of X-Ray CT; https://cir.nii.ac.jp/crid/1050001337932790656; X線CT法によるベントナイトの膨潤・均質化プロセスの分析; https://cir.nii.ac.jp/crid/1390282680257303424
• 参照: Applications of CAT scanning for oil and gas production; https://cir.nii.ac.jp/crid/1361418518651946624; X線CTによる岩石内部構造の3次元観察: (1) CT値と物体密度の関係式の決定; https://cir.nii.ac.jp/crid/1390001204439523200; Ｘ線ＣＴによる岩石の透水係数の測定; https://cir.nii.ac.jp/crid/1390001206017181824; マイクロフォーカスＸ線ＣＴ装置を用いた堆積物・岩石の内部構造の非破壊観察; https://cir.nii.ac.jp/crid/1390001206235346432; Ｘ線ＣＴによる亀裂開口解析; https://cir.nii.ac.jp/crid/1390282680993916288
• 連携機関・データベース: 国立情報学研究所 : CiNii Research; https://cir.nii.ac.jp/
• 提供元機関・データベース: Japan Link Center; https://japanlinkcenter.org/top; 雑誌記事索引データベース; https://ndlsearch.ndl.go.jp; Crossref; https://www.crossref.org; CiNii Articles; 科学研究費助成事業データベース; https://kaken.nii.ac.jp/ja
• 書誌ID（NDLBibID）: 7047653; http://id.ndl.go.jp/bib/7047653
• NII論文ID: 10013341878