Mode-I interlaminar fracture toughness of heat-resistant CFRP at high temperature

Nobuhide Uda, Kousei Ono, Tadashi Nagayasu, Yuichi Hirakawa

研究成果: 書籍/レポート タイプへの寄稿会議への寄与

抄録

In order to develop a High Speed Civil Transport, weight reduction by the use of advanced composite materials is one of the most important technical issues. However, composite laminates have very low interlaminar fracture resistance. Therefore, the interlaminar fracture toughness of composites has consequently become a critical design parameter for the aircraft structures. In this research, mode-I interlaminar fracture behavior of heat-resistant polyimide CFRP was investigated by way of the double-cantilever-beam (DCB) test at high temperature up to 200°C. In the DCB tests at high temperature, fiber cross-over bridging was observed. In order to evaluate the influence of the bridging zone length on the crack growth resistance curve (R-curve), the DCB tests were conducted using specimens with different thicknesses. Fractographic observations of the fracture surface were performed to assess the crack growth behavior. The bridging characteristics were evaluated using a bridging law which describes the relationship between the crack closure traction resulting from the bridging fibers and the local crack opening displacement.

本文言語英語
ホスト出版物のタイトルAdvanced Composites for Efficiency and Environment - The US-Japan Conference on Composite Materials 2008, US-Japan 2008
出版ステータス出版済み - 2008
イベントUS-Japan Conference on Composite Materials 2008, US-Japan 2008 - Tokyo, 日本
継続期間: 6月 6 20086月 7 2008

その他

その他US-Japan Conference on Composite Materials 2008, US-Japan 2008
国/地域日本
CityTokyo
Period6/6/086/7/08

!!!All Science Journal Classification (ASJC) codes

  • セラミックおよび複合材料

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