Direct three-dimensional imaging of the fracture of fiber-reinforced plastic under uniaxial extension: Effect of adhesion between fibers and matrix

Haruko Saito, Yuko Aoyanagi, Takaaki Mihara, Teruhisa Tanaka, Takeshi Higuchi, Hiroshi Morita, Hiroshi Jinnai

Research output: Contribution to journalArticle

6 Citations (Scopus)

Abstract

The three-dimensional morphology and a mechanical property of a fiber-reinforced plastic (FRP) have been investigated under uniaxial extension. A custom tensile apparatus for X-ray computerized tomography was developed for this purpose. The two FRPs used in the present study consisted of nylon 6 with glass fibers. In one of the FRPs, the fiber surfaces were treated to adhere to the nylon 6. It was observed that the fibers tended to align along the extension axis, and that cavitation occurred simultaneously during the extension. In the case of the FRP with glass fibers without any surface modification (hereafter, referred as “neat” glass fibers), void formation was dominant over the whole extension range. In the case of the FRP with surface treatment, fiber alignment occurred first and was followed by void formation. A numerical simulation was carried out to study the stress concentration around a fiber with such morphological changes during extension. Through quantitative measurements of fiber orientation and void volume, together with predictions from the numerical simulations, the effect of fiber/matrix adhesion on the morphological developments and mechanical properties of the FRPs was discussed.

Original languageEnglish
Pages (from-to)556-564
Number of pages9
JournalPolymer
Volume116
DOIs
Publication statusPublished - 2017 May 5

Keywords

  • Dynamical 3D imaging
  • FRP
  • Fracture process
  • X-ray CT

ASJC Scopus subject areas

  • Organic Chemistry
  • Polymers and Plastics
  • Materials Chemistry

Fingerprint Dive into the research topics of 'Direct three-dimensional imaging of the fracture of fiber-reinforced plastic under uniaxial extension: Effect of adhesion between fibers and matrix'. Together they form a unique fingerprint.

  • Cite this