極低温タンク構造への適用に向けた樹脂フィルム付きＣＦＲＰ積層板の損傷挙動に関する研究

DOI Web Site 被引用文献2件 参考文献44件
  • 横関 智弘
    東京大学大学院工学系研究科航空宇宙工学専攻
  • 山形 尚司
    青山学院大学大学院理工学研究科
  • 小笠原 俊夫
    宇宙航空研究開発機構 総合技術研究本部 複合材技術開発センター

書誌事項

タイトル別名
  • Research on the Damage Behaviors of CFRP Laminates with Polymer Films for Cryogenic Tank Application
  • キョクテイオン タンク コウゾウ エノ テキヨウ ニ ムケタ ジュシ フィルム ツキ CFRP セキソウバン ノ ソンショウ キョドウ ニ カンスル ケンキュウ

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抄録

Polymer films are expected to be feasible candidates for the liner of cryogenic composite tank structures. This study investigates the damage behaviors of polymer-lined CFRP laminates under tensile loading at room and cryogenic temperatures. Because matrix cracks in CFRP laminates are considered to be more susceptible to formation than polymer film fracture, damage behaviors of polymer films beyond the onset of matrix cracks in layers adjacent to polymer film are the major concerns herein. Specimens consisting of polymer films and cross-ply laminates were prepared by co-curing and subjected to tension load. Penetration of matrix cracks in composite layers into polymer films was observed in the case of thermoplastic polyimide-lined CFRP laminates, while crack deflection into interfaces between CFRP and polymer films was observed in the case of liquid crystalline polymer and polyimide films. Finally, mechanical properties of polymer films and adhesive properties between CFRP and polymer films were measured in order to discuss the crack penetration/deflection behaviors in polymer-lined CFRP laminates. An energetic criterion on crack penetration/deflection including the effects of residual thermal stress was applied to the present experimental results, and suitable polymer characteristics were clarified.

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