End-notched flexure testing and analysis of model II interlaminar fracture behavior of glass-cloth/epoxy laminates at cryogenic temperatures

Katsumi Horiguchi, Yasuhide Shindo, Hiroyuki Kudo, Susumu Kumagai

Research output: Contribution to journalArticlepeer-review

24 Citations (Scopus)

Abstract

This paper presents results from an analytical and experimental study of the effect of temperature and geometrical variations on the Mode II interlaminar fracture toughness in glass-cloth/epoxy laminates. The end-notched flexure (ENF) test geometry was used for Mode II experiments, which were performed at room temperature (R.T.), liquid nitrogen temperature (77 K), and liquid helium temperature (4 K). The fracture surfaces were also examined by scanning electron microscopy to verify the fracture mechanisms. A finite element model was further used to perform the delamination crack analysis. Critical load levels, and the geometric and material properties of the test specimens were input data for the analysis, which evaluated the Mode II energy release rate at onset of delamination crack propagation. The results of the finite element analysis are used to supplement the experimental data.

Original languageEnglish
Pages (from-to)239-245
Number of pages7
JournalJournal of Composites Technology and Research
Volume24
Issue number4
DOIs
Publication statusPublished - 2002 Oct
Externally publishedYes

Keywords

  • Cryomechanics
  • End-notched flexure testing
  • Finite element analysis
  • Glass-cloth/epoxy laminates
  • Interlaminar fracture toughness

ASJC Scopus subject areas

  • Ceramics and Composites
  • Polymers and Plastics
  • Materials Chemistry

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