The effect of elementary fibre variability on bamboo fibre strength

Fang Wang*, Jiaxing Shao, Leon M. Keer, Lu Li, Junqian Zhang

*Corresponding author for this work

Research output: Contribution to journalArticle

28 Scopus citations

Abstract

Tensile strength of brittle fibres exhibits statistical distribution and size dependence. In this work, the average strength of bamboo fibre is found to decrease from 568 to 483. MPa as mean diameter increases from 196.6 to 584.3. μm. The morphologies of bamboo fibres with increasing diameters were investigated through Scanning Electron Microscopy (SEM) to demonstrate variations in the quantity of elementary fibres. The influence of elementary fibre distributions on the fibre strength was also studied. A modified Weibull model based on number of elementary fibres is proposed to perform scaling predictions for the fracture strength of the fibres at different between-fibre diameters. It was shown that the predicted results are in reasonable agreement with experimental data, highlighting the adequacies of the new analytical model for describing the diameter dependence of tensile strength.

Original languageEnglish (US)
Pages (from-to)136-142
Number of pages7
JournalMaterials and Design
Volume75
DOIs
StatePublished - Jun 15 2015

Keywords

  • Fibres
  • Mechanical testing
  • Microstructure
  • Statistical properties
  • Strength

ASJC Scopus subject areas

  • Materials Science(all)
  • Mechanics of Materials
  • Mechanical Engineering

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