WEKO3
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曲率線展開成形の航空機CFRP構造への適用
https://doi.org/10.20637/00047150
https://doi.org/10.20637/00047150c948e7db-3d11-4c32-9583-259c28c93f4d
名前 / ファイル | ライセンス | アクション |
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AA2030006000.pdf (10.5 MB)
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Item type | テクニカルレポート / Technical Report(1) | |||||
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公開日 | 2020-12-02 | |||||
タイトル | ||||||
タイトル | 曲率線展開成形の航空機CFRP構造への適用 | |||||
言語 | ||||||
言語 | jpn | |||||
キーワード | ||||||
言語 | en | |||||
主題Scheme | Other | |||||
主題 | CFRP | |||||
キーワード | ||||||
言語 | en | |||||
主題Scheme | Other | |||||
主題 | Curved surface molding | |||||
キーワード | ||||||
言語 | en | |||||
主題Scheme | Other | |||||
主題 | Lines of curvature | |||||
キーワード | ||||||
言語 | en | |||||
主題Scheme | Other | |||||
主題 | Non-developable surface | |||||
キーワード | ||||||
言語 | en | |||||
主題Scheme | Other | |||||
主題 | Aircraft structures | |||||
資源タイプ | ||||||
資源タイプ識別子 | http://purl.org/coar/resource_type/c_18gh | |||||
資源タイプ | technical report | |||||
ID登録 | ||||||
ID登録 | 10.20637/00047150 | |||||
ID登録タイプ | JaLC | |||||
その他のタイトル(英) | ||||||
その他のタイトル | Application of principal strips for manufacturing of curved aircraft CFRP structures | |||||
著者 |
安岡, 哲夫
× 安岡, 哲夫× 竹澤, 正仁× 平野, 義鎭× 松尾, 宏平× 櫻井, 昭男× YASUOKA, Tetsuo× TAKEZAWA, Masahito× HIRANO, Yoshiyasu× MATSUO, Kohei× SAKURAI, Akio |
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著者所属 | ||||||
宇宙航空研究開発機構航空技術部門構造・複合材技術研究ユニット(JAXA) | ||||||
著者所属 | ||||||
海上・港湾・航空技術研究所海上技術安全研究所 | ||||||
著者所属 | ||||||
宇宙航空研究開発機構航空技術部門構造・複合材技術研究ユニット(JAXA) | ||||||
著者所属 | ||||||
海上・港湾・航空技術研究所海上技術安全研究所 | ||||||
著者所属 | ||||||
海上・港湾・航空技術研究所海上技術安全研究所 | ||||||
著者所属(英) | ||||||
en | ||||||
Structures and Advanced Composite Research Unit, Aeronautical Technology Directorate, Japan Aerospace Exploration Agency (JAXA) | ||||||
著者所属(英) | ||||||
en | ||||||
National Maritime Research Institute, National Institute of Maritime, Port and Aviation Technology | ||||||
著者所属(英) | ||||||
en | ||||||
Structures and Advanced Composite Research Unit, Aeronautical Technology Directorate, Japan Aerospace Exploration Agency (JAXA) | ||||||
著者所属(英) | ||||||
en | ||||||
National Maritime Research Institute, National Institute of Maritime, Port and Aviation Technology | ||||||
著者所属(英) | ||||||
en | ||||||
National Maritime Research Institute, National Institute of Maritime, Port and Aviation Technology | ||||||
出版者 | ||||||
出版者 | 宇宙航空研究開発機構(JAXA) | |||||
出版者(英) | ||||||
出版者 | Japan Aerospace Exploration Agency (JAXA) | |||||
書誌情報 |
宇宙航空研究開発機構研究開発報告 en : JAXA Research and Development Report 巻 JAXA-RR-20-002, p. 1-20, 発行日 2020-12-02 |
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抄録 | ||||||
内容記述タイプ | Abstract | |||||
内容記述 | 本研究では,複曲率を有する航空機複合材部材に曲率線に基づく展開成形技術を適用することを提案する.複曲率を有する曲面は伸縮なく平面展開することができない非可展面であるため,2次元の平面形状であるプリプレグテープをレイアップすると,本質的に繊維のしわや,トウのすき間・重なりといった欠陥の発生を避けることができず,これらの欠陥は剛性および強度低下の要因となる.本研究では,曲率線展開成形技術の航空機CFRP構造への適用性について検討した.具体的には,曲率線配置を行い,曲率線を基準線として曲面を2次元平面に展開し,展開平面を用いてオートクレーブ法による成形試作を行いその結果を評価した.非可展面を有する3種類の形状について検討を行った.まず,曲率変化が緩やかな自動車のエンジンフードと,ウィンドシールド周りで急激な曲率変化を有する航空機の機首外板については,曲率線を部材表面に配置することができ,また2次元平面形状に展開することができた.さらに,織物プリプレグシートを展開平面形状に切断し,成形型に積層し,オートクレーブ法により硬化させた結果,しわやボイドもなく高品質に成形することができ,当該技術の有効性を確認できた.また,折れ曲がり部が複曲率の表面となっている曲面フランジを有するスパーについても検討を行った.この部材については,曲率線配置および2次元平面への展開は成功したものの,得られた展開形状は複合材成形に不向きであり,このような折れ曲がり部を有する部材については複合材成形への効果は限定的であると考えられた. | |||||
抄録(英) | ||||||
内容記述タイプ | Other | |||||
内容記述 | In this study, a novel manufacturing technique using orthogonal principal strips based on lines of curvature applicable to aircraft composite parts having double curvature surfaces was proposed. A double curvature surface is non-developable; it is difficult to layup intrinsically two-dimensional prepreg tapes on such a surface without any fiber wrinkles, gaps and laps of tows, which induce stiffness and strength degradation of the resulting product. The applicability of this technique was investigated by arranging the orthogonal nets based on lines of curvature onto non-developable surfaces, unfolding the orthogonal principal strips into the two-dimensional shapes and molding several types of composite parts from those strips. Three types of the parts with non-developable surfaces were considered: an engine hood of automobile, aircraft nose/cockpit skins and a spar with curved surface flanges. The orthogonal nets were successfully arranged on both the engine hood with no steep change of curvature and the aircraft nose/cockpit skins with steep change of curvature around windshield, and unfolded into the two-dimensional shapes. Then the prepreg sheet of woven fabric was cut into the unfolded shapes, stacked onto a mold, and cured with an autoclave process. The resulting composite parts were successfully manufactured with high quality, no wrinkles and voids. In other words, the proposed technique is effective composite manufacturing method. On the other hand, regarding the spar with curved surface flanges, which consisted of developable flange/web surfaces and an undevelopable flange/web joining part surface, the orthogonal net was also successfully arranged on the surfaces and unfolded into the orthogonal strips; however, it was considered that the obtained unfolded strips were not suitable for prepreg tapes cutting and composite molding. It was concluded that the scope of application of the proposed method is limited for this type of surfaces with joining parts. | |||||
内容記述 | ||||||
内容記述タイプ | Other | |||||
内容記述 | 形態: カラー図版あり | |||||
内容記述(英) | ||||||
内容記述タイプ | Other | |||||
内容記述 | Physical characteristics: Original contains color illustrations | |||||
ISSNONLINE | ||||||
収録物識別子タイプ | ISSN | |||||
収録物識別子 | 2433-2216 | |||||
著者版フラグ | ||||||
出版タイプ | VoR | |||||
出版タイプResource | http://purl.org/coar/version/c_970fb48d4fbd8a85 | |||||
資料番号 | ||||||
内容記述タイプ | Other | |||||
内容記述 | AA2030006000 | |||||
レポート番号 | ||||||
内容記述タイプ | Other | |||||
内容記述 | レポート番号: JAXA-RR-20-002 |