Mechanical behaviour of circular and triangular glass fibres and their composites

Ian Bond*, Martyn Hucker, Paul Weaver, Stephen Bleay, Sajad Haq

*Corresponding author for this work

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

34 Citations (Scopus)


Single fibre testing of circular (CircGF) and triangular (TriGF) glass fibres of equivalent cross-section has shown the TriGF to have a 25% higher average tensile strength compared to CircGF. Micro-composite compression testing (using resin bonded tows of 12-15 filaments) has revealed the TriGF to have a compression strength 60% greater than CircGF. Some of the increase can be attributed to an effective increase in second moment of area for the TriGF specimens due to imperfect packing. However, allowing for this effect there still appears to be an underlying significant improvement in compressive strength performance attributable to the inherent fibre shape. Mechanical testing under tensile load has shown that the triangular glass fibre reinforced plastic (TriGFRP) performs marginally better (20%) than that manufactured using circular fibre (CirGFRP) for equivalent fibre volume fractions. Similarly, under compressive loading the TriGFRP outperforms CircGFRP by a significant margin of 40%. Interlaminar shear testing has also indicated that TriGFRP may offer a performance advantage of approximately 5%, although this needs further verification to be conclusive. © 2002 Elsevier Science Ltd. All rights reserved.

Translated title of the contributionMechanical behaviour of circular and triangular glass fibres and their composites
Original languageEnglish
Pages (from-to)1051-1061
Number of pages11
JournalComposites Science and Technology
Issue number7-8
Publication statusPublished - 1 Jun 2002

Bibliographical note

Publisher: Elsevier


  • A. Fibres
  • A. Polymer-matrix composites
  • B. Mechanical properties
  • Novel shape


Dive into the research topics of 'Mechanical behaviour of circular and triangular glass fibres and their composites'. Together they form a unique fingerprint.

Cite this