Measuring the intralaminar crack resistance curve of fibre reinforced composites at extreme temperatures

R. F. Pinto, G. Catalanotti, P. P. Camanho*

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

6 Citations (Scopus)
259 Downloads (Pure)

Abstract

This work focuses on the development of methods to measure the intralaminar fracture toughness of IM7/8552 CFRP at extreme temperatures. The size effect law of scaled double-edge-notched (DEN) specimens is used to obtain the crack resistance curves associated with longitudinal failure of polymer composites. The compressive and tensile crack resistance curves are determined and compared to those measured at room temperature. Scanning electron microscopy is used to analyse the fracture surface of tensile DEN specimens as a means to understand the damage mechanisms involved and their dependence on temperature variations. It is shown that the methods proposed enable the measurement of the crack resistance curve under different environment conditions. The results obtained can be used in analytical models to evaluate the integrity of composite structures at extreme temperatures.

Original languageEnglish
Pages (from-to)145-155
Number of pages11
JournalComposites Part A: Applied Science and Manufacturing
Volume91
Issue number1
Early online date05 Oct 2016
DOIs
Publication statusPublished - Dec 2016

Keywords

  • Elastic properties
  • Fibre reinforced materials
  • Fracture mechanics
  • Intralaminar fracture toughness
  • Material characterisation
  • R-curve
  • Scanning electron microscopy
  • Size effect
  • Temperature

ASJC Scopus subject areas

  • Ceramics and Composites
  • Mechanics of Materials

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