{"created":"2023-05-15T15:25:50.258366+00:00","id":13631,"links":{},"metadata":{"_buckets":{"deposit":"e03d1d1d-081a-4dfa-b7b0-d373d0553120"},"_deposit":{"created_by":3,"id":"13631","owners":[3],"pid":{"revision_id":0,"type":"depid","value":"13631"},"status":"published"},"_oai":{"id":"oai:sucra.repo.nii.ac.jp:00013631","sets":["94:426"]},"author_link":["22691","22690"],"item_119_alternative_title_1":{"attribute_name":"タイトル（別言語）","attribute_value_mlt":[{"subitem_alternative_title":"Three-dimensional Fabric Analysis of Microcracks associated with Brittle Failure of Granitic Rocks"}]},"item_119_biblio_info_8":{"attribute_name":"書誌情報","attribute_value_mlt":[{"bibliographicIssueDates":{"bibliographicIssueDate":"2002","bibliographicIssueDateType":"Issued"},"bibliographicIssueNumber":"7","bibliographicPageEnd":"464","bibliographicPageStart":"453","bibliographicVolumeNumber":"108","bibliographic_titles":[{"bibliographic_title":"地質學雜誌"},{"bibliographic_title":"Journal of the Geological Society of Japan","bibliographic_titleLang":"en"}]}]},"item_119_date_31":{"attribute_name":"作成日","attribute_value_mlt":[{"subitem_date_issued_datetime":"2009-09-24","subitem_date_issued_type":"Created"}]},"item_119_description_19":{"attribute_name":"抄録","attribute_value_mlt":[{"subitem_description":"マイクロクラックの構造はステレオロジーとクラックテンソルにより定量的に評価することができる.花崗岩質岩石(稲田花崗岩)の脆性破壊をマイクロクラックの視点から議論するため,クラックテンソル解析を行った.脆性破壊に伴い発生・進展するマイクロクラックは初期マイクロクラックの方向性を維持しており,その多くは石英内クラックである.マイクロクラックの開口幅が封圧に依存していることから,破壊応力時の非弾性体積歪は封圧の増加に伴い減少する傾向にある.一方,破壊応力時のクラック密度F_0 (クラックテンソルの第一不変量)は封圧に依存せず一定であり,脆性破壊はクラック密度がある閾値に到達した時に起こることを示唆している.破壊後に起こるクラック密度の急激な増加は非弾性体積歪みを大きく増加させている原因と考えられる.また,増加するマイクロクラックの多くはクラック密度の高い石英周辺の粒界クラックである.このことより,粒界クラックは断層形成過程において重要な役割を担っていると考えられる.\n\nMicrocracks-related fabric, determined by a stereological method, is represented quantitatively by means of the crack tensor, and brittle failure of granitic rock (Inada granite) is discussed based on the crack tensor analysis. Orientation of stress-induced microcracks does not change much during brittle failure, depending primarily on the orientation of pre-existing microcracks in quartz grains. Inelastic volumetric strain at failure decreases with increasing confining pressure due to the fact that crack opening is controlled by the confining pressure. The crack density F_0 at failure, the first invariant of crack tensor, is independent of the confining pressure. That is, brittle failure starts when F_0 reaches a threshold value. After failure, rapid increase of the crack density takes place with increasing inelastic volumetric strain, and the most of stress-induced microcracks are grain boundary cracks around highly cracked quartz grains. It is suggested, based on the observation, that such grain boundary cracks play an essential role in the subsequent process of deformation such as fault development.","subitem_description_type":"Abstract"}]},"item_119_description_21":{"attribute_name":"注記","attribute_value_mlt":[{"subitem_description":"rights: 日本地質学会\nrights: 本文データは学協会の許諾に基づきCiNiiから複製したものである\nrelation: IsVersionOf: http://ci.nii.ac.jp/naid/110003025113/","subitem_description_type":"Other"}]},"item_119_description_29":{"attribute_name":"資源タイプ","attribute_value_mlt":[{"subitem_description":"text","subitem_description_type":"Other"}]},"item_119_description_30":{"attribute_name":"フォーマット","attribute_value_mlt":[{"subitem_description":"application/pdf","subitem_description_type":"Other"}]},"item_119_other_language_22":{"attribute_name":"その他の言語","attribute_value_mlt":[{"subitem_language":"eng"}]},"item_119_publisher_11":{"attribute_name":"出版者名","attribute_value_mlt":[{"subitem_publisher":"日本地質学会"}]},"item_119_source_id_14":{"attribute_name":"ISSN","attribute_value_mlt":[{"subitem_source_identifier":"00167630","subitem_source_identifier_type":"ISSN"}]},"item_119_text_27":{"attribute_name":"版","attribute_value_mlt":[{"subitem_text_value":"[出版社版]"}]},"item_119_text_3":{"attribute_name":"著者 ローマ字","attribute_value_mlt":[{"subitem_text_value":"Takemura, Takato"},{"subitem_text_value":"Oda, Masanobu"}]},"item_119_text_32":{"attribute_name":"アイテムID","attribute_value_mlt":[{"subitem_text_value":"A1003984"}]},"item_119_text_4":{"attribute_name":"著者 所属","attribute_value_mlt":[{"subitem_text_value":"埼玉大学大学院理工学研究科生産科学専攻"},{"subitem_text_value":"埼玉大学工学部建設工学科"}]},"item_119_text_5":{"attribute_name":"著者 所属(別言語)","attribute_value_mlt":[{"subitem_text_value":"Graduate School of Science and Engineering, Saitama University"},{"subitem_text_value":"Department of civil and Environmental Engineering, Saitama University"}]},"item_119_text_9":{"attribute_name":"年月次","attribute_value_mlt":[{"subitem_text_value":"2002-7"}]},"item_119_version_type_28":{"attribute_name":"著者版フラグ","attribute_value_mlt":[{"subitem_version_resource":"http://purl.org/coar/version/c_970fb48d4fbd8a85","subitem_version_type":"VoR"}]},"item_creator":{"attribute_name":"著者","attribute_type":"creator","attribute_value_mlt":[{"creatorNames":[{"creatorName":"竹村, 貴人"}],"nameIdentifiers":[{}]},{"creatorNames":[{"creatorName":"小田, 匡寛"},{"creatorName":"オダ, マサノブ","creatorNameLang":"ja-Kana"}],"nameIdentifiers":[{}]}]},"item_files":{"attribute_name":"ファイル情報","attribute_type":"file","attribute_value_mlt":[{"accessrole":"open_date","date":[{"dateType":"Available","dateValue":"2018-01-24"}],"displaytype":"detail","filename":"A1003984.pdf","filesize":[{"value":"1.3 MB"}],"format":"application/pdf","licensetype":"license_note","mimetype":"application/pdf","url":{"label":"A1003984.pdf","url":"https://sucra.repo.nii.ac.jp/record/13631/files/A1003984.pdf"},"version_id":"60ef637e-512a-4e24-bf79-45c50301de61"}]},"item_language":{"attribute_name":"言語","attribute_value_mlt":[{"subitem_language":"jpn"}]},"item_resource_type":{"attribute_name":"資源タイプ","attribute_value_mlt":[{"resourcetype":"journal article","resourceuri":"http://purl.org/coar/resource_type/c_6501"}]},"item_title":"マイクロクラックの3次元構造解析による花崗岩質岩石の脆性破壊機構","item_titles":{"attribute_name":"タイトル","attribute_value_mlt":[{"subitem_title":"マイクロクラックの3次元構造解析による花崗岩質岩石の脆性破壊機構"}]},"item_type_id":"119","owner":"3","path":["426"],"pubdate":{"attribute_name":"公開日","attribute_value":"2009-09-24"},"publish_date":"2009-09-24","publish_status":"0","recid":"13631","relation_version_is_last":true,"title":["マイクロクラックの3次元構造解析による花崗岩質岩石の脆性破壊機構"],"weko_creator_id":"3","weko_shared_id":3},"updated":"2023-05-15T19:10:37.009586+00:00"}