The effect of fibre volume fraction on the onset of fracture in laminar materials with an array of coplanar interface cracks

Bartlomiej Winiarski, Igor Guz

Research output: Contribution to journalArticle

8 Citations (Scopus)

Abstract

The onset of fracture process in a layered composite with coplanar interface cracks under compression along layers is studied within the scope of 3-D theory of stability using the model of piecewise-homogeneous medium. Each layer consists of a matrix reinforced by continuous parallel fibres and is modelled by a compressible, linear elastic, transversely isotropic material. The eigenvalue problem with respect to the controlled parameters, namely, the crack length, the crack spacing and the 0 degrees-plies layer volume fraction is solved for the shear and the extensional modes utilizing the finite element analysis by commercially available FE code. The results are obtained for 0 degrees-plies volume fraction V-0 degrees = 0. 1... 0.9 for the typical dispositions of cracks. The effect of the crack length, the crack spacing and the 0 degrees-plies volume fraction on the critical microbuckling strain in the composite was determined. (C) 2007 Elsevier Ltd. All rights reserved.

Original languageEnglish
Pages (from-to)2367-2375
Number of pages9
JournalComposites Science and Technology
Volume68
Issue number12
DOIs
Publication statusPublished - Sep 2008

Keywords

  • Layered structures
  • Interlaminar defects
  • Fracture
  • Buckling
  • Finite element analysis (FEA)
  • Layered composites
  • Compressive failure
  • Residual-stresses
  • Thermoplastic composites
  • Instability
  • Mechanisms
  • Adhesion
  • Bounds

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