{"created":"2021-03-01T06:14:08.417778+00:00","id":7480,"links":{},"metadata":{"_buckets":{"deposit":"d99c747e-1608-4b39-8de8-d8e48ca42ceb"},"_deposit":{"id":"7480","owners":[],"pid":{"revision_id":0,"type":"depid","value":"7480"},"status":"published"},"_oai":{"id":"oai:nagoya.repo.nii.ac.jp:00007480","sets":["320:321:322"]},"author_link":["20992","20993","20994","20995"],"item_10_alternative_title_19":{"attribute_name":"その他のタイトル","attribute_value_mlt":[{"subitem_alternative_title":"Evaluation of Fracture Toughness of Porous Ceramics","subitem_alternative_title_language":"en"}]},"item_10_biblio_info_6":{"attribute_name":"書誌情報","attribute_value_mlt":[{"bibliographicIssueDates":{"bibliographicIssueDate":"2001-08","bibliographicIssueDateType":"Issued"},"bibliographicIssueNumber":"660","bibliographicPageEnd":"1385","bibliographicPageStart":"1378","bibliographicVolumeNumber":"67","bibliographic_titles":[{"bibliographic_title":"日本機械学會論文集 A編","bibliographic_titleLang":"ja"}]}]},"item_10_description_4":{"attribute_name":"抄録","attribute_value_mlt":[{"subitem_description":"The indentation fracture (IF) method, the single-edge precracked beam (SEPB) method, and the single-edge V-notched beam (SEVNB) method were applied to evaluate the fracture toughness of four kind of porous ceramics of SiC, Al2O3 and Mg2Al4Si5O18 with porosity ranging from 37 to 43％. The microstructures of these materials were composed of ceramics grains, glassy grain boundaries and pores. Each grain was joined together with the glassy grain boundary phase. The IF and SEPB methods were not applicable because both precracks and indenter traces were not visible. On the other hand, the SEVNB method was applicable because the V-notch could be easily machined by grinding. In the case of the SEVNB method, the applied load versus back-face strain plots under four point bending showed nonlinearity prior to the maximum load. The R-curve behavior was estimated from the compliance change of specimens. The fracture toughness of porous ceramics was smaller than that of dense ceramics, and increased with increasing crack extension. Since the stable crack predominantly propagated along glassy grain boundaries, the R-curve behavior depended on the loading rate and matrix grain size. The increment of R-curve by grain briding got bigger for coarser-grain sized ceramics.","subitem_description_language":"en","subitem_description_type":"Abstract"}]},"item_10_identifier_60":{"attribute_name":"URI","attribute_value_mlt":[{"subitem_identifier_type":"HDL","subitem_identifier_uri":"http://hdl.handle.net/2237/9161"}]},"item_10_publisher_32":{"attribute_name":"出版者","attribute_value_mlt":[{"subitem_publisher":"日本機械学会","subitem_publisher_language":"ja"}]},"item_10_relation_43":{"attribute_name":"関連情報","attribute_value_mlt":[{"subitem_relation_type":"isVersionOf","subitem_relation_type_id":{"subitem_relation_type_id_text":"http://ci.nii.ac.jp/naid/110002369940/","subitem_relation_type_select":"URI"}}]},"item_10_rights_12":{"attribute_name":"権利","attribute_value_mlt":[{"subitem_rights":"日本機械学会","subitem_rights_language":"ja"},{"subitem_rights":"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。","subitem_rights_language":"ja"}]},"item_10_select_15":{"attribute_name":"著者版フラグ","attribute_value_mlt":[{"subitem_select_item":"publisher"}]},"item_10_source_id_7":{"attribute_name":"ISSN","attribute_value_mlt":[{"subitem_source_identifier":"0387-5008","subitem_source_identifier_type":"PISSN"}]},"item_10_text_14":{"attribute_name":"フォーマット","attribute_value_mlt":[{"subitem_text_value":"application/pdf"}]},"item_1615787544753":{"attribute_name":"出版タイプ","attribute_value_mlt":[{"subitem_version_resource":"http://purl.org/coar/version/c_970fb48d4fbd8a85","subitem_version_type":"VoR"}]},"item_access_right":{"attribute_name":"アクセス権","attribute_value_mlt":[{"subitem_access_right":"open access","subitem_access_right_uri":"http://purl.org/coar/access_right/c_abf2"}]},"item_creator":{"attribute_name":"著者","attribute_type":"creator","attribute_value_mlt":[{"creatorNames":[{"creatorName":"坂井田, 喜久","creatorNameLang":"ja"}],"nameIdentifiers":[{"nameIdentifier":"20992","nameIdentifierScheme":"WEKO"}]},{"creatorNames":[{"creatorName":"SAKAIDA, Yoshihisa","creatorNameLang":"en"}],"nameIdentifiers":[{"nameIdentifier":"20993","nameIdentifierScheme":"WEKO"}]},{"creatorNames":[{"creatorName":"田中, 啓介","creatorNameLang":"ja"}],"nameIdentifiers":[{"nameIdentifier":"20994","nameIdentifierScheme":"WEKO"}]},{"creatorNames":[{"creatorName":"TANAKA, Keisuke","creatorNameLang":"en"}],"nameIdentifiers":[{"nameIdentifier":"20995","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":"2018-02-19"}],"displaytype":"detail","filename":"JsMecEngA_67-660-1378.pdf","filesize":[{"value":"860.9 kB"}],"format":"application/pdf","licensetype":"license_note","mimetype":"application/pdf","url":{"label":"JsMecEngA_67-660-1378.pdf","objectType":"fulltext","url":"https://nagoya.repo.nii.ac.jp/record/7480/files/JsMecEngA_67-660-1378.pdf"},"version_id":"6fb014e4-4b79-4161-a9b3-eec1e1316d3a"}]},"item_keyword":{"attribute_name":"キーワード","attribute_value_mlt":[{"subitem_subject":"Porous Ceramics","subitem_subject_scheme":"Other"},{"subitem_subject":"Fracture Toughness","subitem_subject_scheme":"Other"},{"subitem_subject":"Indentation Fracture Method","subitem_subject_scheme":"Other"},{"subitem_subject":"Single-edge Precracked Beam Method","subitem_subject_scheme":"Other"},{"subitem_subject":"Single-Edge V-Notched Beam Method","subitem_subject_scheme":"Other"},{"subitem_subject":"R-curve Behavior","subitem_subject_scheme":"Other"}]},"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":"多孔質セラミックスの破壊靭性評価","item_titles":{"attribute_name":"タイトル","attribute_value_mlt":[{"subitem_title":"多孔質セラミックスの破壊靭性評価","subitem_title_language":"ja"}]},"item_type_id":"10","owner":"1","path":["322"],"pubdate":{"attribute_name":"PubDate","attribute_value":"2007-12-17"},"publish_date":"2007-12-17","publish_status":"0","recid":"7480","relation_version_is_last":true,"title":["多孔質セラミックスの破壊靭性評価"],"weko_creator_id":"1","weko_shared_id":-1},"updated":"2023-01-16T03:52:58.871930+00:00"}