Interlaminar Fracture Toughness Behavior of Electron-Beam Cured Carbon-Fiber Reinforced Epoxy–Resin Composites

Giuseppe Spadaro, Giuseppe Pitarresi, Sabina Alessi, Davide Tumino, Andrzej Nowicki

Research output: Contribution to journalArticlepeer-review

20 Citations (Scopus)

Abstract

The work describes the preparation and physicalmechanical characterization of unidirectional CFRP panels manufactured by an electron beam curing technique. Delamination fracture toughness in Mode I and II is investigated in order to evaluate the influence of fiber–matrix adhesion strength, matrix toughness and matrix crosslinking density as determined by the radiation curing process. A matrix system comprising a DGEBA epoxy monomer and an initiator of cationic polymerization have been used, with one batch of resin mixed with a PES monomer in order to enhance matrix toughness. Curing was achieved with a pulsed 10 MeV Electron Beam accelerator. Thermally cured composite systems have also been manufactured and tested for comparison. Results from double cantilever beam and end notched flexure delamination tests have been analyzed and correlated with results from short beam shear, dynamic mechanical thermal analysis tests and SEM micrographs of delaminated surfaces.
Original languageEnglish
Pages (from-to)1529-1542
Number of pages14
JournalPolymer Composites
Volume35
Publication statusPublished - 2014

All Science Journal Classification (ASJC) codes

  • Ceramics and Composites
  • General Chemistry
  • Polymers and Plastics
  • Materials Chemistry

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