Experimental investigation on test methods for mode II interlaminar fracture testing of carbon fiber reinforced composites

Wen Xue Wang, Miko Nakata, Yoshihiro Takao, Terutake Matsubara

研究成果: Contribution to journalReview article査読

52 被引用数 (Scopus)

抄録

In this paper, experimental investigation on the test methods for mode II interlaminar fracture testing of carbon fiber reinforced composites are carried out. Mode II interlaminar fracture testing of unidirectional composite of carbon fiber reinforced epoxy (T800/#3631) are conducted using four kinds of test methods, namely end notched flexure (ENF) test, end loaded split (ELS) test, four-point bend end notched flexure (4ENF) test, and over notched flexure (ONF) test. An analytical model based on a point-friction assumption and classical beam theory is proposed to evaluate the effect of friction between crack faces on the mode II interlaminar fracture toughness in the 4ENF and ONF tests. The analytical model is validated by the comparison of analytical results with previous ones obtained from finite element analysis. Experimental results show that the ENF test gives reliable initiation value of fracture toughness with a small scatter and that the average value of fracture toughness obtained from 4ENF test is about 2% higher than that obtained from the ENF test. The effect of friction in the 4ENF test is much lower than that in the ONF test in which the effect of friction increases with the crack growing. It is concluded that the 4ENF test method is an effective test method for the experimental evaluation of mode II propagation interlaminar fracture toughness of carbon fiber reinforced composites.

本文言語英語
ページ(範囲)1447-1455
ページ数9
ジャーナルComposites Part A: Applied Science and Manufacturing
40
9
DOI
出版ステータス出版済み - 9 2009

All Science Journal Classification (ASJC) codes

  • Ceramics and Composites
  • Mechanics of Materials

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