2D C/C複合材料製ダブテール接合の強度および破壊挙動 Strength and Fracture Behavior of Dovetail Joint Structure Made of 2D Carbon-Carbon Composite

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In a development study of the air-turbo-ramjet (ATR) engine for a space plane, carbon-carbon (C/C) composites are attempted to be applied to the tip-turbine structure mainly taking advantage of high specific strength at elevated temperature. This disk has rather complicated shape and thus the joining structure is expected to be used. For the joint between fan blades and a fan disk, the dovetail joint is appeared to be useful but it is indispensable to maintain sufficient durability against extremely high centrifugal force to design optimally material property as well as the joint geometry. Tensile tests were carried out on simplified dovetail joint models made of three type of two dimensionally reinforced C/C composites. The effect of stacking pattern and various geometrical parameters was examined so as to fined an optimal structure. The result of the tensile test suggests that fracture of the dovetail joint be controlled by the average stress criterion, which implies stress concentration near the shoulder is almost relaxed during failure process of the C/C composites. It is also shown that AE signals are extremely useful to identify durability limit of the dovetail joint especially when the fracture mode is shear.

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 24(6), 222-229, 1998-11-15 

    JAPAN SOCIETY FOR COMPOSITE MATERIALS

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各種コード

  • NII論文ID(NAID)
    10002465743
  • 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
    4600771
  • 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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