多重化FBG光ファイバセンサの動ひずみ計測によるCFRPフォームコアサンドイッチ構造の衝撃同定 Impact Identification for CFRP Foam-Core Sandwich Structures Using Dynamic Strain Measurement by Multiplexed FBG Sensors

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This study established a fiber-optic-based impact identification technique for carbon fiber reinforced plastic (CFRP) foam-core sandwich structures. Multiplexed fiber Bragg grating (FBG) sensors were embedded between the CFRP facesheet and the foam core, and measured dynamic strain values were utilized for predicting impact location and load history. In general, low-velocity impact loading, inducing barely visible impact damage (BVID) in practical application, has long impact duration. Thus a straightforward identification technique was proposed based on an assumption that the deformation of the impacted structure can be considered quasi-static. This study began by evaluating measurement accuracy of multipoint dynamic strain sensing system consisting of the multiplexed FBG sensors and an arrayed waveguide grating (AWG) filter. Impact identification test was then conducted using a CFRP foam core sandwich panel, confirming that impact location and force history can be predicted with satisfactory accuracy by using the proposed fiber-optic-based technique.

収録刊行物

  • 日本航空宇宙学会論文集 = Journal of the Japan Society for Aeronautical and Space Sciences

    日本航空宇宙学会論文集 = Journal of the Japan Society for Aeronautical and Space Sciences 59(691), 212-221, 2011-08-05

    一般社団法人 日本航空宇宙学会

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各種コード

  • NII論文ID(NAID)
    10030274829
  • NII書誌ID(NCID)
    AA11307372
  • 本文言語コード
    JPN
  • 資料種別
    ART
  • ISSN
    13446460
  • NDL 記事登録ID
    11212379
  • NDL 雑誌分類
    ZN25(科学技術--運輸工学--航空機・ロケット)
  • NDL 請求記号
    Z74-B503
  • データ提供元
    CJP書誌  CJP引用  NDL  J-STAGE 
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