{"created":"2023-06-20T15:03:06.005014+00:00","id":32211,"links":{},"metadata":{"_buckets":{"deposit":"44b72d6b-bbab-476e-a878-1f95c7428c9c"},"_deposit":{"created_by":1,"id":"32211","owners":[1],"pid":{"revision_id":0,"type":"depid","value":"32211"},"status":"published"},"_oai":{"id":"oai:jaxa.repo.nii.ac.jp:00032211","sets":["1887:1890","1896:1898:1899:1910"]},"author_link":["407818","407820","407819","407821","407822","407823"],"item_9_alternative_title_2":{"attribute_name":"その他のタイトル（英）","attribute_value_mlt":[{"subitem_alternative_title":"Mechanical Degradation of Aeroplane Materials by Their Fatigue and Its Detection (1 st Report) : Decreasing of The Breaking Strain of 2024-T3 Al Alloy by Its Fatigue"}]},"item_9_biblio_info_10":{"attribute_name":"書誌情報","attribute_value_mlt":[{"bibliographicIssueDates":{"bibliographicIssueDate":"1970-09","bibliographicIssueDateType":"Issued"},"bibliographicIssueNumber":"3_B","bibliographicPageEnd":"728","bibliographicPageStart":"716","bibliographicVolumeNumber":"6","bibliographic_titles":[{"bibliographic_title":"東京大学宇宙航空研究所報告"}]}]},"item_9_description_16":{"attribute_name":"抄録","attribute_value_mlt":[{"subitem_description":"航空機の安全破損(fail-safe)構造では検出可能の欠陥を発見したときその部品を交換するのが立前であるが,欠陥の検出される前の材料は弱化していないのかを,航空材料2024-T3系材料について研究した.測定した(0.534～1.08)σ_y(σ_y:降伏応力)の三つの応力レベルの中,1.08σ_yおよび0.824σ_yの二応力レベルで,n>0.65N(一定の応力レベルSiにおいて,n:繰返し負荷回数,N:疲労破断までの繰返し負荷回数)で,破断伸びε_bの著しい低下と,破断応力σ_bのわずかな低下の起ることが示された.すなわち,常用航空材料において巨視的欠陥が現われる以前において,弱化の始まっている事実が明らかとなったわけで,今後の航空機設計において考慮の必要があろう.","subitem_description_type":"Abstract"}]},"item_9_description_17":{"attribute_name":"抄録（英）","attribute_value_mlt":[{"subitem_description":"Probable variations of the mechanical properties in statical tension, of the specimens previously loaded repeatedly in various grades of n/N at various stress levels, are studied (n : number of repeated loading, N: number of repeated loading at fatigue fracture), for ASP 4-T 3 (2024-T 3 Al alloy). Remarkable decreasing of the breaking strain ε_b in the range of n≧0.65N, at the stress levels of 1.08σ_y and 0.824σ_y, (σ_y : yield stress), and slight decreasing of breaking stress σ_b at the stress levels 1.08σ_y～0.534σ_y, are found. That is, embrittlement is beginning before the appearance of the macroscopic defects and this fact should be considered in the future design of aeroplane structures.","subitem_description_type":"Other"}]},"item_9_description_32":{"attribute_name":"資料番号","attribute_value_mlt":[{"subitem_description":"資料番号: SA0125363000","subitem_description_type":"Other"}]},"item_9_publisher_8":{"attribute_name":"出版者","attribute_value_mlt":[{"subitem_publisher":"東京大学宇宙航空研究所"}]},"item_9_source_id_21":{"attribute_name":"ISSN","attribute_value_mlt":[{"subitem_source_identifier":"0563-8100","subitem_source_identifier_type":"ISSN"}]},"item_9_source_id_24":{"attribute_name":"書誌レコードID","attribute_value_mlt":[{"subitem_source_identifier":"AN00161914","subitem_source_identifier_type":"NCID"}]},"item_9_text_6":{"attribute_name":"著者所属","attribute_value_mlt":[{"subitem_text_value":"東京大学宇宙航空研究所"},{"subitem_text_value":"東京大学宇宙航空研究所"},{"subitem_text_value":"東京大学宇宙航空研究所"}]},"item_9_text_7":{"attribute_name":"著者所属（英）","attribute_value_mlt":[{"subitem_text_language":"en","subitem_text_value":"Institute of Space and Aeronautical Science"},{"subitem_text_language":"en","subitem_text_value":"Institute of Space and Aeronautical Science"},{"subitem_text_language":"en","subitem_text_value":"Institute of Space and Aeronautical Science"}]},"item_creator":{"attribute_name":"著者","attribute_type":"creator","attribute_value_mlt":[{"creatorNames":[{"creatorName":"河田, 幸三"}],"nameIdentifiers":[{}]},{"creatorNames":[{"creatorName":"橋本, 彰三"}],"nameIdentifiers":[{}]},{"creatorNames":[{"creatorName":"本堂, 明"}],"nameIdentifiers":[{}]},{"creatorNames":[{"creatorName":"KAWATA, Kozo","creatorNameLang":"en"}],"nameIdentifiers":[{}]},{"creatorNames":[{"creatorName":"HASHIMOTO, Shozo","creatorNameLang":"en"}],"nameIdentifiers":[{}]},{"creatorNames":[{"creatorName":"HONDO, Akira","creatorNameLang":"en"}],"nameIdentifiers":[{}]}]},"item_files":{"attribute_name":"ファイル情報","attribute_type":"file","attribute_value_mlt":[{"accessrole":"open_date","date":[{"dateType":"Available","dateValue":"2020-01-24"}],"displaytype":"detail","filename":"SA0125363.pdf","filesize":[{"value":"880.0 kB"}],"format":"application/pdf","licensetype":"license_note","mimetype":"application/pdf","url":{"label":"SA0125363.pdf","url":"https://jaxa.repo.nii.ac.jp/record/32211/files/SA0125363.pdf"},"version_id":"c167c2a8-35f0-4f6b-b18d-267ad56c23c0"}]},"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":"departmental bulletin paper","resourceuri":"http://purl.org/coar/resource_type/c_6501"}]},"item_title":"航空材料の疲れによる力学的劣化とその検出(第1報) : A3P4-T3(2024-T3)の疲れによる伸び等の低下","item_titles":{"attribute_name":"タイトル","attribute_value_mlt":[{"subitem_title":"航空材料の疲れによる力学的劣化とその検出(第1報) : A3P4-T3(2024-T3)の疲れによる伸び等の低下"}]},"item_type_id":"9","owner":"1","path":["1890","1910"],"pubdate":{"attribute_name":"公開日","attribute_value":"2015-03-26"},"publish_date":"2015-03-26","publish_status":"0","recid":"32211","relation_version_is_last":true,"title":["航空材料の疲れによる力学的劣化とその検出(第1報) : A3P4-T3(2024-T3)の疲れによる伸び等の低下"],"weko_creator_id":"1","weko_shared_id":-1},"updated":"2023-06-21T00:38:25.731448+00:00"}