Validation of micromechanics models including imperfect interfaces for short fiber thermoplastic composites

Yoshinori Inoue, Taiji Ikawa, Tomonaga Okabe

Research output: Contribution to journalArticle

1 Citation (Scopus)

Abstract

Micromechanics models proposed by Nairn et al. and Hashin, which can treat imperfect bonded interfaces between fibers and polymer matrix, are evaluated for use in predicting the equivalent stiffness of a short fiber reinforced thermoplastic composite. Treatment of the imperfect interfaces is fundamentally important to address differences of interface connections that affect the mechanical properties of the composite. We first compare the Nairn–Hashin (NH) models with the Mori–Tanaka (MT) model under the condition of a perfect interface. Elastic moduli calculated from the NH models almost agree with that from the MT model. The NH models are then evaluated using elastic moduli measured for randomly fiber-oriented films of short glass fiber reinforced polypropylene. By considering the imperfect interface parameters estimated from pull-out tests of a single glass fiber embedded in a polypropylene matrix, the NH models predict the measured elastic moduli.

Original languageEnglish
Pages (from-to)625-638
Number of pages14
JournalAdvanced Composite Materials
Volume28
Issue number6
DOIs
Publication statusPublished - 2019 Nov 2

Keywords

  • imperfect bonded interface
  • mechanical property
  • micromechanics model
  • model validation
  • short fiber composite

ASJC Scopus subject areas

  • Ceramics and Composites
  • Mechanics of Materials
  • Mechanical Engineering

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