Evaluation of the mechanical properties of PMC interface using slice compression test - analysis of transfer mechanism of interfacial shear stress

Norihiko Taniguchi, Kunihiro Toge, Hiroyuki Kawada

Research output: Contribution to journalConference article

2 Citations (Scopus)

Abstract

Properties of the fiber/matrix interface in SiO2/epoxy and SiC/epoxy composite are investigated using the slice compression test (SCT) for the single fiber, where the specimen is loaded and unloaded between a plate which has different mechanical properties. It is found that the interfacial debonding proceeds from the polished surface at a soft plate side and that the fiber protrusion occurs after unloading. The fiber-protrusion length is directly measured at each applied stress level using a scanning electron microscope. Interfacial shear-sliding stress is obtained based on the constant shear-sliding stress analysis employing the obtained protrusion length. It is demonstrated that the value of interfacial shear-sliding stress shows good agreement with that obtained from another technique, the push-out test, on the same system. The relation between the fiber-protrusion length and applied stress is proportional to a certain extent. From this result, it is analytically pointed out that the applied stress has a limiting value in this SCT because of Poisson's effect. Also, two interfacial debonding criteria, which are determined analytically for the PMC, are discussed.

Original languageEnglish
Pages (from-to)349-361
Number of pages13
JournalComposite Interfaces
Volume7
Issue number5-6
DOIs
Publication statusPublished - 2001 Jan 1
Event7th Symposium on Intrfacial Material Science of Composites - Tokyo, Japan
Duration: 1999 Apr 261999 Apr 28

Keywords

  • Debonding
  • Energy release rate
  • Interfacial shear-sliding stress
  • Poisson's effect
  • Slice compression test

ASJC Scopus subject areas

  • Ceramics and Composites
  • Physics and Astronomy(all)
  • Surfaces, Coatings and Films

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