103 疲労荷重下におけるアラミド単繊維/エポキシ樹脂の界面はく離進展に及ぼす湿潤環境効果

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タイトル別名
  • Effect of wet environment on propagation of Aramid/Epoxy interfacial debonding under fatigue loading

抄録

The fatigue tests of interfacial debonding were carried out to investigate the influence of a wet environment on the propagation properties of interfacial debonding of Aramid/Epoxy composite. For this purpose a specially designed model composite was developed, where single fiber was embedded in epoxy matrix : the fiber/matrix interface could be observed clearly. In dry air, interfacial debonding propagated faster than in laboratory air, whereas it hardly propagated in wet air. The propagation rate of interfacial debonding slowed down and retarded although a constant fatigue load was applied to the sample. This behavior was considered to be owing to the friction stress on debonded wakes.

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