Compressive intralaminar fracture toughness and residual strength of 2D woven carbon fibre reinforced composites: New developments on using the size effect method

Denis Dalli, Giuseppe Catalanotti, Luis Varandas, Brian Falzon*

*Corresponding author for this work

Research output: Contribution to journalArticle

Abstract

This paper presents new developments in the use of the size effect method for obtaining the compressive fracture toughness of 2D woven carbon fibre composites. A modification of the Double Edge Notch Compression (DENC) specimen geometry is proposed, to fit the Combined Loading Compression (CLC) standard fixture, and shown to reduce peak load dispersion. The notch tip diameter sensitivity on the peak load is also investigated, experimentally and numerically, and shown not to have a significant influence on fracture toughness. The use of the
CLC fixture also allows for the residual compressive strength of the material to be calculated from post-peak crushing.
Original languageEnglish
Article number102487
JournalTheoretical and Applied Fracture Mechanics
Volume106
Early online date10 Jan 2020
DOIs
Publication statusPublished - 15 Jan 2020

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Keywords

  • (A) Carbon fibre
  • (C) Analytical modelling
  • (C) Computational modelling
  • (D) Mechanical testing
  • Compressive intralaminar fracture toughness

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