擬似等方性積層板の応力-ひずみ応答と損傷進展に及ぼす吸湿の影響 Effects of Moisture on Stress-Strain Response and Damage Evolution in Quasi-Isotropic Laminates

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Effects of moisture on the stress-strain response and damage progress of quasi-isotropic CF/ Epoxy laminates ([0°/45°/-45°/90°]s) are presented. Tensile tests are conducted for both dry and wet specimens to compare the stress-strain behavior and the damage processes between them. The transverse cracking and delamination are microscopically observed and quantitatively measured at various loads. Macroscopic residual hygrothermal stresses are calculated by using the classical lamination theory to discuss those effects on damage initiation. The Young's modulus and Poisson's ratio of specimens with edge delamination are predicted on the basis of a modified delamination model and compared with experimental results. From the above experiments and calculations, it is proved that nonlinearity observed in the stress-strain response is attributed to the large scale edge delamination throughout the length of the specimen. The moisture increases the critical stresses for transverse cracking and delamination by reducing the residual stresses, while it decreases the stress of the transverse extension of edge delamination along the width. The modified delamination model gives better agreement with experimental results than the conventional one.

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(1), 20-29, 1998-01-15 

    JAPAN SOCIETY FOR COMPOSITE MATERIALS

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各種コード

  • NII論文ID(NAID)
    10002465311
  • 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
    4377807
  • 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  NDL  J-STAGE 
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