Crack Identification and Strain Evaluation from Displacement Fields Measured Using Digital Image Correlation

• 資料種別: 記事
• タイトル: Crack Identification and Strain Evaluation from Displacement Fields Measured Using Digital Image Correlation
• 著者・編者: Chika FUKUDA; Keisuke IIZUKA; Kenichi SAKAUE; Satoru YONEYAMA
• 著者標目: Chika FUKUDA; Keisuke IIZUKA; Kenichi SAKAUE; Satoru YONEYAMA
• タイトル（掲載誌）: Advanced experimental mechanics / Editorial board for advanced experimental mechanics [編]
• 巻号年月日等（掲載誌）: 10:2025.8
• 掲載巻: 10
• 掲載ページ: 33-39
• 掲載年月日（W3CDTF）: 2025-08
• ISSN（掲載誌）: 2189-4752
• ISSN-L（掲載誌）: 2189-4752
• 出版事項（掲載誌）: Niigata : The Japanese Society for Experimental Mechanics
• 出版地（国名コード）: JP
• 本文の言語コード: eng
• 件名標目: Crack; Digital image correlation; Strain; Displacement; Fracture mechanics
• NDLC: ZM17
• 対象利用者: 一般
• 所蔵機関: 国立国会図書館
• 請求記号: Z63-D560
• 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）: 034429780; http://id.ndl.go.jp/bib/034429780
• 整理区分コード: 632

• 要約等: <p>This paper proposes a data processing method for easily and efficiently determining strains near a crack from the displacement field data obtained using digital image correlation. The displacements within a strain window are approximated by polynomials and the strains are obtained as their derivatives. A crack is detected from the difference between the approximated and measured displacement distributions and the correlation coefficients obtained during the displacement measurement. The strains near the crack are obtained by ensuring that the data at the crack does not overlap with the strain window. The proposed method is applied to several displacement fields obtained using digital image correlation and demonstrates its effectiveness. This method makes it possible to easily obtain the strain distributions near a crack and is expected to be applied to various fracture mechanics studies.</p>
• DOI: 10.11395/aem.25-0004
• 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: <p>This paper proposes a data processing method for easily and efficiently determining strains near a crack from the displacement field data obtained using digital image correlation. The displacements within a strain window are approximated by polynomials and the strains are obtained as their derivatives. A crack is detected from the difference between the approximated and measured displacement distributions and the correlation coefficients obtained during the displacement measurement. The strains near the crack are obtained by ensuring that the data at the crack does not overlap with the strain window. The proposed method is applied to several displacement fields obtained using digital image correlation and demonstrates its effectiveness. This method makes it possible to easily obtain the strain distributions near a crack and is expected to be applied to various fracture mechanics studies.</p>
• DOI: 10.11395/aem.25-0004; https://doi.org/10.11395/aem.25-0004
• 関連情報（URI）: http://id.ndl.go.jp/bib/034429780; https://ndlsearch.ndl.go.jp/books/R000000004-I034429780
• 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
• 書誌ID（NDLBibID）: 034429780; http://id.ndl.go.jp/bib/034429780