光ファイバによるC/C複合材料の面圧破壊モニタリング Bearing Failure Monitoring of C/C Composites with an Attached Optical Fiber

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To realize future transport such as SST (HSCT), HST and space plane, we have to develop drastic technologies for lightening weight and assuring reliability of composite structures. In this connection, authors have studied damage monitoring techniques for composite structures by using fiber optic methods. In this paper, we investigated a possibility of bearing failure monitoring of the bolted joints of C/C composites by detecting the breaking of an attached optical fiber. Results obtained are summarized as follows: (1) Damage cannot be detected unless the plastic coating of optical fibers is stripped. (2) When attaching the stripped optical fiber longitudinally to the loading direction, bearing and net tension failure can be detected though shear-out failure cannot be detected. (3) When attaching the stripped optical fiber transversely to the loading direction, both bearing and shear-out failure can be always detected. There is a proportional correlation between the distance from the optical fiber to hole edge and the pin displacement at optical fiber breaking. This attached type fiber optics is effective to apply to the practical structure monitoring, i.e., not only high temperature composite structures but also some kinds of infrastructures.

収録刊行物

  • 日本複合材料学会誌 = Journal of the Japan Society for Composite Materials  

    日本複合材料学会誌 = Journal of the Japan Society for Composite Materials 23(3), 100-107, 1997-05-15 

    JAPAN SOCIETY FOR COMPOSITE MATERIALS

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各種コード

  • NII論文ID(NAID)
    10002465037
  • NII書誌ID(NCID)
    AN00196748
  • 本文言語コード
    JPN
  • 資料種別
    ART
  • ISSN
    03852563
  • NDL 記事登録ID
    4214798
  • NDL 雑誌分類
    ZM16(科学技術--科学技術一般--工業材料・材料試験)
  • NDL 請求記号
    Z14-655
  • データ提供元
    CJP書誌  CJP引用  NDL  J-STAGE 
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