Propagation of Delamination Fatigue Cracks in CFRP in Water

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概要

• 論文の詳細を見る

• The effect of a water environment on the near-threshold growth of delamination fatigue cracks was investigated with unidirectional laminates made from Ciba Geigy prepregs 914 C (T300/914) and from Toray prepregs P305 (T300/#2500). Tests were carried out under mode I opening loading using double cantilever beam specimens. The crack growth rate was correlated to the equivalent stress intensity range regardless of the stress ratio. For the 914 C laminate, the crack growth rate in water was about one tenth of that in air in the power-law region. For the P305 laminate, the effect of a water environment was small in the power-law region. Near the threshold, the crack grew slower in water than in air for both laminates. When the 914 C laminate specimen was moisture-conditioned, the growth rate in water was about 300 times faster than that of the specimen in water without conditioning. These environmental effects were explained on the bases of fractography and fracture mechanisms.

• 一般社団法人日本機械学会の論文
• 1989-04-15

著者

• Gustafson Claes-goran

  Swedish Plastics And Rubber Institute

• Hayashi Ryuichi

  Industrial Products Research Institute

• Tanaka Keisuke

  Department Of Cardiovascular Surgery Nagoya Daini Red Cross Hospital

• HOJO Masaki

  Industrial Products Research Institute

• Tanaka Keisuke

  Department Of Biochemistry Faculty Of Veterinary Medicine Hokkaido University

• Tanaka Keisuke

  Department Of Applied Chemistry Waseda University

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