EFFECTS OF HYBRIDIZATION AND PLY THICKNESS ON CARBON/CARBON COMPOSITE LAMINATES STRENGTH AND TOUGHNESS

Federico Danzi, Rodrigo Tavares, José Xavier, Daniele Fanteria, Pedro Ponces Camanho

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

Abstract

This work presents the results of an experimental study performed on carbon/epoxy composite materials manufactured using a ply-level hybridization technique to promote a pseudo-ductile failure and enhance their longitudinal fracture toughness. Three hybrid layup configurations with different total ply thicknesses and expected mechanical responses were selected for the investigation. The experimental campaign included longitudinal and transverse tensile tests together with in-plane shear and double edge notched tensile (DENT) specimens for the characterization of intralaminar longitudinal toughness. Although fracture toughness does not increase appreciably with hybridization, an effect on the failure modes is observed characterized by more widespread damage with distinctive fragmentation and pull-out. The combination of the thicker ply blocks with hybridization resulted in a diffused damaged scenario with clear advantages in terms of energy dissipation.

Original languageEnglish
Title of host publicationMaterials
EditorsAnastasios P. Vassilopoulos, Veronique Michaud
PublisherComposite Construction Laboratory (CCLab), Ecole Polytechnique Federale de Lausanne (EPFL)
Pages1091-1096
Number of pages6
ISBN (Electronic)9782970161400
Publication statusPublished - 2022
Event20th European Conference on Composite Materials: Composites Meet Sustainability, ECCM 2022 - Lausanne, Switzerland
Duration: 26 Jun 202230 Jun 2022

Publication series

NameECCM 2022 - Proceedings of the 20th European Conference on Composite Materials: Composites Meet Sustainability
Volume1

Conference

Conference20th European Conference on Composite Materials: Composites Meet Sustainability, ECCM 2022
Country/TerritorySwitzerland
CityLausanne
Period26/06/2230/06/22

Keywords

  • carbon fibre
  • hybrid
  • mechanical properties
  • Polymer matrix composites
  • thin-ply

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