{"created":"2021-03-01T06:34:03.798422+00:00","id":28272,"links":{},"metadata":{"_buckets":{"deposit":"2728414b-26c7-41a7-8c8f-36b747a6a8de"},"_deposit":{"id":"28272","owners":[],"pid":{"revision_id":0,"type":"depid","value":"28272"},"status":"published"},"_oai":{"id":"oai:niigata-u.repo.nii.ac.jp:00028272","sets":["453:456","485:872:1583:1587"]},"item_7_alternative_title_1":{"attribute_name":"その他のタイトル","attribute_value_mlt":[{"subitem_alternative_title":"AE法による長期供用したRCアーチ部材の損傷度評価に関する研究"}]},"item_7_biblio_info_6":{"attribute_name":"書誌情報","attribute_value_mlt":[{"bibliographicIssueDates":{"bibliographicIssueDate":"2015-04","bibliographicIssueDateType":"Issued"},"bibliographicIssueNumber":"2","bibliographicPageEnd":"116","bibliographicPageStart":"111","bibliographicVolumeNumber":"67","bibliographic_titles":[{"bibliographic_title":"新潟大学農学部研究報告"},{"bibliographic_title":"新潟大学農学部研究報告","bibliographic_titleLang":"en"}]}]},"item_7_description_4":{"attribute_name":"抄録","attribute_value_mlt":[{"subitem_description":"It is widely reported that durability of concrete decreases readily due to such effects, as salt, chemical attack or freezingthawing\\nprocess. In existing structures, mechanical damage of concrete has been practically inspected from the strength by　a compression test. For effective maintenance of concrete structures, it is necessary to evaluate not only the strength but\\nalso the degree of damage. By the authors, quantitative damage evaluation of structural concrete is proposed by applying　acoustic emission (AE) technique and damage mechanics. In experiments, core-samples were collected from an arch portion of a reinforced concrete road bridge that had been in service for 87 years. Compressive strengths and Young’s moduli were measured during the compression test along with AE monitoring. Dynamic Young’s modulus was also calculated from the longitudinal wave velocity. Thus, the relative damages are quantitatively evaluated from static and dynamic Young’s moduli and compared with results of AE rate-process analysis.","subitem_description_type":"Abstract"},{"subitem_description":"コンクリート構造物に関する耐久性の低下は、外部環境の影響による損傷蓄積により進行する。一般的にコンクリート損傷は圧縮強度などにより評価されるが、より効果的な維持管理には強度特性のみではなく損傷度の推定が不可欠である。本報では、AE（Acoustic Emission）法と損傷力学を用いてコンクリートの定量的損傷度評価を試みた結果を報告する。実験的検討では、竣工後87年が経過したコンクリート道路橋アーチ部材を対象とした。供試したコンクリート・コアの力学特性は、AE計測を導入した圧縮強度試験により評価した。動弾性係数はP波速度より評価した。検討の結果、破壊試験と非破壊試験により評価した相対損傷度はAE発生挙動と密接に関連していることが明らかになった。","subitem_description_type":"Abstract"}]},"item_7_full_name_3":{"attribute_name":"著者別名","attribute_value_mlt":[{"nameIdentifiers":[{"nameIdentifier":"162420","nameIdentifierScheme":"WEKO"}],"names":[{"name":"鈴木, 哲也"}]},{"nameIdentifiers":[{"nameIdentifier":"162421","nameIdentifierScheme":"WEKO"}],"names":[{"name":"稲葉, 一成"}]},{"nameIdentifiers":[{"nameIdentifier":"162422","nameIdentifierScheme":"WEKO"}],"names":[{"name":"山岸, 俊太朗"}]},{"nameIdentifiers":[{"nameIdentifier":"162423","nameIdentifierScheme":"WEKO"}],"names":[{"name":"森井, 俊広"}]}]},"item_7_publisher_7":{"attribute_name":"出版者","attribute_value_mlt":[{"subitem_publisher":"新潟大学農学部"}]},"item_7_select_19":{"attribute_name":"著者版フラグ","attribute_value_mlt":[{"subitem_select_item":"publisher"}]},"item_7_source_id_11":{"attribute_name":"書誌レコードID","attribute_value_mlt":[{"subitem_source_identifier":"AN00183393","subitem_source_identifier_type":"NCID"}]},"item_7_source_id_9":{"attribute_name":"ISSN","attribute_value_mlt":[{"subitem_source_identifier":"03858634","subitem_source_identifier_type":"ISSN"}]},"item_creator":{"attribute_name":"著者","attribute_type":"creator","attribute_value_mlt":[{"creatorNames":[{"creatorName":"Suzuki, Tetsuya"}],"nameIdentifiers":[{"nameIdentifier":"162416","nameIdentifierScheme":"WEKO"}]},{"creatorNames":[{"creatorName":"Inaba, Kazunari"}],"nameIdentifiers":[{"nameIdentifier":"162417","nameIdentifierScheme":"WEKO"}]},{"creatorNames":[{"creatorName":"Yamagishi, Shuntaro"}],"nameIdentifiers":[{"nameIdentifier":"162418","nameIdentifierScheme":"WEKO"}]},{"creatorNames":[{"creatorName":"Morii, Toshihiro"}],"nameIdentifiers":[{"nameIdentifier":"162419","nameIdentifierScheme":"WEKO"}]}]},"item_files":{"attribute_name":"ファイル情報","attribute_type":"file","attribute_value_mlt":[{"accessrole":"open_date","date":[{"dateType":"Available","dateValue":"2019-08-20"}],"displaytype":"detail","filename":"67(2)_111-116.pdf","filesize":[{"value":"1.9 MB"}],"format":"application/pdf","licensetype":"license_note","mimetype":"application/pdf","url":{"label":"67(2)_111-116.pdf","url":"https://niigata-u.repo.nii.ac.jp/record/28272/files/67(2)_111-116.pdf"},"version_id":"3758ef08-e130-4ea9-adcd-ea74c8fcdad1"}]},"item_keyword":{"attribute_name":"キーワード","attribute_value_mlt":[{"subitem_subject":"acoustic emission","subitem_subject_scheme":"Other"},{"subitem_subject":"damage mechanics","subitem_subject_scheme":"Other"},{"subitem_subject":"dynamic Young’s modulus","subitem_subject_scheme":"Other"},{"subitem_subject":"compression test","subitem_subject_scheme":"Other"},{"subitem_subject":"non-destructive testing","subitem_subject_scheme":"Other"},{"subitem_subject":"AE","subitem_subject_scheme":"Other"},{"subitem_subject":"損傷力学","subitem_subject_scheme":"Other"},{"subitem_subject":"動弾性係数","subitem_subject_scheme":"Other"},{"subitem_subject":"圧縮強度試験","subitem_subject_scheme":"Other"},{"subitem_subject":"非破壊検査","subitem_subject_scheme":"Other"}]},"item_language":{"attribute_name":"言語","attribute_value_mlt":[{"subitem_language":"eng"}]},"item_resource_type":{"attribute_name":"資源タイプ","attribute_value_mlt":[{"resourcetype":"departmental bulletin paper","resourceuri":"http://purl.org/coar/resource_type/c_6501"}]},"item_title":"Damage Evaluation of an Historic Concrete Arch Bridge by Acoustic Emission","item_titles":{"attribute_name":"タイトル","attribute_value_mlt":[{"subitem_title":"Damage Evaluation of an Historic Concrete Arch Bridge by Acoustic Emission"},{"subitem_title":"Damage Evaluation of an Historic Concrete Arch Bridge by Acoustic Emission","subitem_title_language":"en"}]},"item_type_id":"7","owner":"1","path":["456","1587"],"pubdate":{"attribute_name":"公開日","attribute_value":"2015-04-20"},"publish_date":"2015-04-20","publish_status":"0","recid":"28272","relation_version_is_last":true,"title":["Damage Evaluation of an Historic Concrete Arch Bridge by Acoustic Emission"],"weko_creator_id":"1","weko_shared_id":null},"updated":"2022-12-15T03:58:11.749462+00:00"}