Effects of temperature on mode II fracture toughness of multidirectional CFRP laminates

Hyoung Soo Kim, Wen Xue Wang, Yoshihiro Takao, Goichi Ben

Research output: Contribution to journalArticlepeer-review

4 Citations (Scopus)

Abstract

End notched flexure (ENF) tests were performed to investigate the effects of temperature and fiber orientation on Mode II interlaminar fracture behavior, GIIC (GII at the crack initiation), of carbon fiber-reinforced epoxy composites, T800H/#3631. The values of GIIC for three kinds of laminates, [012//012], [22.5/-22.5/08/-22.5/22.5//-22.5/22.5/08/22.5/-22.5] and [45/-45/08/-45/45//-45/45/08/45/-45], with a pre-cracked interface, that is // in each laminate, were obtained at three temperatures, i.e. -100°C, 25°C and 150°C. It is shown that GIIC is obviously affected by the temperature and fiber orientation. The scanning electron microscope (SEM) observation was also carried out to investigate the fracture surface. SEM analysis suggested that the decreased Mode II interlaminar fracture toughness for all kinds of specimens at high temperature could be attributed to temperature-induced matrix property change or fiber-matrix interfacial weakening.

Original languageEnglish
Pages (from-to)1717-1723
Number of pages7
JournalInternational Journal of Modern Physics B
Volume17
Issue number8-9 II
DOIs
Publication statusPublished - Apr 10 2003

All Science Journal Classification (ASJC) codes

  • Statistical and Nonlinear Physics
  • Condensed Matter Physics

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