Mechanical and Thermomechanical Characterisation of Vacuum-Infused Thermoplastic- and Thermoset-based Composites

Winifred Ogwa Obande, Dimitrios Mamalis, Dipa Ray, Conchur O Brádaigh, Liu Yang

Research output: Contribution to journalArticlepeer-review

Abstract

In this work, a comparative performance study was conducted on glass fibre-reinforced thermoplastic acrylic and thermosetting epoxy laminates produced by vacuum-assisted resin transfer moulding. Mechanical characterisation revealed that the acrylic-based composite had superior transverse tensile strength and mode-I fracture toughness to the epoxy composite, while longitudinal flexural properties and short beam shear strength were found to be comparable. Dissimilar damage evolution behaviour were observed in both materials during tensile testing. The thermomechanical behaviour of the materials has been assessed as a function of temperature. Finally, fractographic investigations of shear and mode-I fracture behaviour revealed distinct fracture mechanisms that complement the findings from mechanical and thermomechanical analyses.
Original languageEnglish
JournalMaterials & Design
Volume175
Early online date3 May 2019
DOIs
Publication statusPublished - 5 Aug 2019

Keywords

  • Thermoplastic Polymer
  • In-Situ Polymerisation
  • Vacuum Infusion
  • Polymer-Matrix Composites (PMCs)
  • Mechanical properties
  • Thermomechanical Properties

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