Bio-inspired laminate design exhibiting pseudo-ductile (graceful) failure during flexural loading

Rob Malkin, Mehdi Yasaee, Richard S. Trask, Ian P. Bond*

*Corresponding author for this work

Research output: Contribution to journalArticle (Academic Journal)peer-review

37 Citations (Scopus)
387 Downloads (Pure)

Abstract

Discontinuous reinforcement phases are often observed in high toughness natural materials, for example, nacre. The aim of this study is to introduce a degree of 'pseudo-ductility' to fibre reinforced polymer materials by exploiting such discontinuities. The work presented aims to take a simple concept of discrete material sections and apply it in the form of ply cuts in a carbon fibre reinforced polymer. A variety of specimen types which encompass the principles inspired by the architecture of nacre were tested in four point bend flexure and the failure processes investigated. Finite element analysis was also carried out to understand stress conditions around ply cuts and their role in the observed failure. It was observed that ply cut spacing and ply cut density were important parameters in achieving 'pseudo-ductile' failure. (C) 2013 Elsevier Ltd. All rights reserved.

Original languageEnglish
Pages (from-to)107-116
Number of pages10
JournalComposites Part A: Applied Science and Manufacturing
Volume54
Early online date20 Jul 2013
DOIs
Publication statusPublished - Nov 2013

Keywords

  • Carbon fibre
  • Laminates
  • Damage tolerance
  • Stress concentrations
  • MECHANICAL-PROPERTIES
  • DISCONTINUOUS PLIES
  • NACRE
  • DELAMINATION
  • STRENGTH
  • MOTHER
  • PEARL
  • BONE
  • KEY

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