{"_buckets": {"deposit": "8241ceba-9794-4eeb-9fef-8fa92351b3e3"}, "_deposit": {"id": "28340", "owners": [], "pid": {"revision_id": 0, "type": "depid", "value": "28340"}, "status": "published"}, "_oai": {"id": "oai:niigata-u.repo.nii.ac.jp:00028340", "sets": ["456", "1594"]}, "item_7_alternative_title_1": {"attribute_name": "その他のタイトル", "attribute_value_mlt": [{"subitem_alternative_title": "AEレートプロセス解析を用いたコンクリートの損傷推定に関する研究"}]}, "item_7_biblio_info_6": {"attribute_name": "書誌情報", "attribute_value_mlt": [{"bibliographicIssueDates": {"bibliographicIssueDate": "2011-09", "bibliographicIssueDateType": "Issued"}, "bibliographicIssueNumber": "1", "bibliographicPageEnd": "47", "bibliographicPageStart": "43", "bibliographicVolumeNumber": "64", "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": "The durability of concrete structures decreases easily due to such external effects, as neutralization and freezingthawingprocess. The degree of damage in concrete is, in most cases, evaluated by an unconfined compression test and arebound hammer test. For effective maintenance and management of concrete structures, it is necessary to evaluate notonly the strength of concrete but also the degree of damage. Quantitative damage evaluation of concrete is proposed byapplying acoustic emission (AE) method and damage mechanics.　In this study, damaged concrete samples are examined, based on fracturing behavior under unconfined compression.AE behavior of the concrete under compression is dependent on the degree of damage, and could be approximated, applyingthe rate process analysis. Using Loland\u0027s model, a relationship between stress and strain is modeled, and a relation betweenAE rate and the damage parameter is correlated. By calculating the relative damage from the database based on thisrelation, the initial damage of the concrete in an actual structure is successfully estimated.", "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。実験的検討は、農業水利施設より採取した損傷コンクリートを用いて行った。検討の結果、圧縮応力下でのAE 発生挙動はコンクリート損傷と密接に関連し、AE レートプロセス解析により定量化が可能であることが明らかになった。ローランドモデルにより推定した健全時の弾性係数を用いて現在の弾性係数との相対比を算出した結果、実構造物において相対損傷度が評価可能であることを明らかになった。", "subitem_description_type": "Abstract"}]}, "item_7_full_name_3": {"attribute_name": "著者別名", "attribute_value_mlt": [{"nameIdentifiers": [{"nameIdentifier": "162916", "nameIdentifierScheme": "WEKO"}], "names": [{"name": "山岸, 俊太郎"}]}, {"nameIdentifiers": [{"nameIdentifier": "162917", "nameIdentifierScheme": "WEKO"}], "names": [{"name": "鈴木, 哲也"}]}]}, "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": "Yamagishi, Shuntaro"}], "nameIdentifiers": [{"nameIdentifier": "162914", "nameIdentifierScheme": "WEKO"}]}, {"creatorNames": [{"creatorName": "Suzuki, Tetsuya"}], "nameIdentifiers": [{"nameIdentifier": "162915", "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", "download_preview_message": "", "file_order": 0, "filename": "64(1)_43-47.pdf", "filesize": [{"value": "1.7 MB"}], "format": "application/pdf", "future_date_message": "", "is_thumbnail": false, "licensetype": "license_free", "mimetype": "application/pdf", "size": 1700000.0, "url": {"label": "64(1)_43-47.pdf", "url": "https://niigata-u.repo.nii.ac.jp/record/28340/files/64(1)_43-47.pdf"}, "version_id": "b9350109-8d37-4ff0-9195-186630ed28da"}]}, "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": "concrete damage", "subitem_subject_scheme": "Other"}, {"subitem_subject": "agricultural infrastructure", "subitem_subject_scheme": "Other"}, {"subitem_subject": "AE", "subitem_subject_scheme": "Other"}, {"subitem_subject": "損傷力学", "subitem_subject_scheme": "Other"}, {"subitem_subject": "コンクリート損傷", "subitem_subject_scheme": "Other"}, {"subitem_subject": "農業水利施設", "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 Estimation of Concrete by AE Rate Process Analysis in Core Test", "item_titles": {"attribute_name": "タイトル", "attribute_value_mlt": [{"subitem_title": "Damage Estimation of Concrete by AE Rate Process Analysis in Core Test"}, {"subitem_title": "Damage Estimation of Concrete by AE Rate Process Analysis in Core Test", "subitem_title_language": "en"}]}, "item_type_id": "7", "owner": "1", "path": ["456", "1594"], "permalink_uri": "http://hdl.handle.net/10191/18627", "pubdate": {"attribute_name": "公開日", "attribute_value": "2012-07-02"}, "publish_date": "2012-07-02", "publish_status": "0", "recid": "28340", "relation": {}, "relation_version_is_last": true, "title": ["Damage Estimation of Concrete by AE Rate Process Analysis in Core Test"], "weko_shared_id": null}