{"created":"2023-06-20T14:36:11.589214+00:00","id":2505,"links":{},"metadata":{"_buckets":{"deposit":"05f79b94-d581-4aca-beaa-7eab721253dc"},"_deposit":{"created_by":1,"id":"2505","owners":[1],"pid":{"revision_id":0,"type":"depid","value":"2505"},"status":"published"},"_oai":{"id":"oai:jaxa.repo.nii.ac.jp:00002505","sets":["1887:1893","9:1090:1150:1158"]},"author_link":["6817","6816","6818","6815"],"item_3_alternative_title_2":{"attribute_name":"その他のタイトル（英）","attribute_value_mlt":[{"subitem_alternative_title":"Development of a test facility for measuring the mechanical properties　of materials under cryogenic environment: 1st Report uniaxial mechanical property testing"}]},"item_3_biblio_info_10":{"attribute_name":"書誌情報","attribute_value_mlt":[{"bibliographicIssueDates":{"bibliographicIssueDate":"2014-02-28","bibliographicIssueDateType":"Issued"},"bibliographicPageEnd":"36","bibliographicPageStart":"1","bibliographicVolumeNumber":"JAXA-RM-13-014","bibliographic_titles":[{"bibliographic_title":"宇宙航空研究開発機構研究開発資料"},{"bibliographic_title":"JAXA Research and Development Memorandum","bibliographic_titleLang":"en"}]}]},"item_3_description_16":{"attribute_name":"抄録","attribute_value_mlt":[{"subitem_description":"ロケットの打ち上げ能力の向上を考える上で構造重量の大幅な軽量化が必要であり，構造重量の大きな割合を占める極低温推進剤タンク構造への複合材料の適用は大きな効果があると期待されている．これまでの多くの研究開発により，極低温推進剤タンク構造においては複合材料の強度だけでなく，推進剤の漏えい特性も重要であることが明らかとなってきた．系統的な極低温における複合材料の漏えい試験データの測定を目的として，極低温環境二軸力学特性用試験設備の開発がJAXA 航空本部で進められている．最終的には十字型二軸試験に用いることができる極低温環境槽の開発を目指しているが，多くの技術的課題を着実に克服するために，まずは単軸力学特性試験用極低温環境槽の開発を行った．本報告書は，この単軸力学特性試験用極低温環境槽の開発についてまとめたものである．試験片を冷却する冷媒として液体ヘリウムを用いた場合，ヘリウムリークデテクタを用いた漏洩特性の測定が難しい．そのため，この開発における試験片の極低温冷却に，液体ヘリウムを冷媒とした冷却方式ではなく，冷凍機を用いた冷却方式を採用した．冷凍機により冷却された試験片には，二軸試験機を用いて単軸引張負荷を加える．引張試験は，冷凍機と真空断熱により試験片の評定部を極低温とした状態で行われる．真空断熱された極低温環境槽内に評定部がある試験片に対して負荷を加えるインターフェイスの設計が，この開発で最も難しい点であった．また，試験片の破壊による衝撃が環境槽及び冷凍機に損傷を与える恐れがあるため，試験片の破壊による保護機構を設けて，試験片の破壊時に環境槽及び冷凍機が損傷しないようにした．開発した単軸力学特性試験用極低温環境槽の性能確認試験を実施し，-196 C以下の冷却性能および二軸試験機を用いた複合材の極低温破壊試験ができることを確認した．","subitem_description_type":"Abstract"}]},"item_3_description_17":{"attribute_name":"抄録（英）","attribute_value_mlt":[{"subitem_description":"The recent application of composite materials in the cryogenic propellant tanks of a rocket structure is expected to result in significant structural weight reduction, a factor considered essential to the improvement of a rocket’s launch capability. Previous research and development activities have highlighted the importance of propellant leakage in addition to composite material strength during the design of cryogenic propellant composite tanks. The development of a test facility for measuring cryogenic biaxial mechanical properties is currently in progress at JAXA IAT(Institute of Aeronautical Technology) with the aim of developing a data of leakage results for composite materials under cryogenic conditions. Although the final goal is to develop a test facility for cryogenicbiaxial mechanical properties, a cryogenic environmental chamber for uniaxial mechanical property testing has been developed as a first step to overcoming a range of technical challenges. This report summarizes the development of a cryogenic environmental chamber for uniaxial mechanical property testing. In this development, composite specimens were cryogenically cooled using a refrigerator for the specimen instead of liquefied helium as a cryogen due to the difficulties with measuring propellant leakage from helium leak detectors. The specimen cooled by the refrigerator was subjected to uniaxial tensile load by a biaxial testing machine. During tensile testing, thespecimen was maintained at a cryogenic temperature by the refrigerator and vacuum insulation. In this development, it was difficult to design the interface to apply the tensile load to the specimen gauge area, which was positioned inside the cryogenic environmental chamber combined with vacuum insulation. In addition, there was a concern that the reaction of the specimen fracture might give the damage to the cryogenic environmental chamber and the refrigerator. Therefore, the cryogenic environmental chamber was equipped with protection mechanisms to avoid the damage to chamber and the refrigerator from the shock of the specimen fracture. The results of the performance tests reveal that the environmental chamber has the capability to cool the specimen below -196 C and enables the cryogenic fracture tensile testing of the composite materials with a biaxial testing machine.","subitem_description_type":"Other"}]},"item_3_description_18":{"attribute_name":"内容記述","attribute_value_mlt":[{"subitem_description":"形態: カラー図版あり","subitem_description_type":"Other"}]},"item_3_description_19":{"attribute_name":"内容記述（英）","attribute_value_mlt":[{"subitem_description":"Physical characteristics: Original contains color illustrations","subitem_description_type":"Other"}]},"item_3_description_32":{"attribute_name":"資料番号","attribute_value_mlt":[{"subitem_description":"資料番号: AA0062267000","subitem_description_type":"Other"}]},"item_3_description_33":{"attribute_name":"レポート番号","attribute_value_mlt":[{"subitem_description":"レポート番号: JAXA-RM-13-014","subitem_description_type":"Other"}]},"item_3_publisher_8":{"attribute_name":"出版者","attribute_value_mlt":[{"subitem_publisher":"宇宙航空研究開発機構(JAXA)"}]},"item_3_publisher_9":{"attribute_name":"出版者（英）","attribute_value_mlt":[{"subitem_publisher":"Japan Aerospace Exploration Agency (JAXA)"}]},"item_3_source_id_21":{"attribute_name":"ISSN","attribute_value_mlt":[{"subitem_source_identifier":"1349-1121","subitem_source_identifier_type":"ISSN"}]},"item_3_source_id_24":{"attribute_name":"書誌レコードID","attribute_value_mlt":[{"subitem_source_identifier":"AA11983593","subitem_source_identifier_type":"NCID"}]},"item_3_text_6":{"attribute_name":"著者所属","attribute_value_mlt":[{"subitem_text_value":"宇宙航空研究開発機構航空本部構造技術研究グループ(JAXA)"},{"subitem_text_value":"宇宙航空研究開発機構航空本部構造技術研究グループ(JAXA)"}]},"item_3_text_7":{"attribute_name":"著者所属（英）","attribute_value_mlt":[{"subitem_text_language":"en","subitem_text_value":"Structures Research Group, Institute of Aeronautical Technology, Japan Aerospace Exploration Agency (JAXA)"},{"subitem_text_language":"en","subitem_text_value":"Structures Research Group, Institute of Aeronautical Technology, Japan Aerospace Exploration Agency (JAXA)"}]},"item_creator":{"attribute_name":"著者","attribute_type":"creator","attribute_value_mlt":[{"creatorNames":[{"creatorName":"熊澤, 寿"}],"nameIdentifiers":[{}]},{"creatorNames":[{"creatorName":"高戸谷, 健"}],"nameIdentifiers":[{}]},{"creatorNames":[{"creatorName":"Kumazawa, Hisashi","creatorNameLang":"en"}],"nameIdentifiers":[{}]},{"creatorNames":[{"creatorName":"Takatoya, Takeshi","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":"2020-01-15"}],"displaytype":"detail","filename":"62267000.pdf","filesize":[{"value":"6.0 MB"}],"format":"application/pdf","licensetype":"license_note","mimetype":"application/pdf","url":{"label":"62267000.pdf","url":"https://jaxa.repo.nii.ac.jp/record/2505/files/62267000.pdf"},"version_id":"a75807fd-aaad-4a99-9c9c-cde204fcdc27"}]},"item_keyword":{"attribute_name":"キーワード","attribute_value_mlt":[{"subitem_subject":"cryogenic propellant tank","subitem_subject_language":"en","subitem_subject_scheme":"Other"},{"subitem_subject":"cryogenic mechanical test","subitem_subject_language":"en","subitem_subject_scheme":"Other"},{"subitem_subject":"CFRP","subitem_subject_language":"en","subitem_subject_scheme":"Other"},{"subitem_subject":"leakage property","subitem_subject_language":"en","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":"technical report","resourceuri":"http://purl.org/coar/resource_type/c_18gh"}]},"item_title":"極低温環境力学特性用試験設備の開発: その1 単軸力学特性試験","item_titles":{"attribute_name":"タイトル","attribute_value_mlt":[{"subitem_title":"極低温環境力学特性用試験設備の開発: その1 単軸力学特性試験"}]},"item_type_id":"3","owner":"1","path":["1158","1893"],"pubdate":{"attribute_name":"公開日","attribute_value":"2015-03-26"},"publish_date":"2015-03-26","publish_status":"0","recid":"2505","relation_version_is_last":true,"title":["極低温環境力学特性用試験設備の開発: その1 単軸力学特性試験"],"weko_creator_id":"1","weko_shared_id":-1},"updated":"2023-06-21T09:21:11.745754+00:00"}