FRACTURE TOUGHNESS AND PERFORMANCE OF RESISTANCE-WELDED AND CO-BONDED THERMOSET/THERMOPLASTIC POLYMER COMPOSITE HYBRID JOINTS

Thomas Maierhofer, Evripides G. Loukaides, Hernandez Thibault, Craig Carr, Chiara Bisagni, Richard Butler

Research output: Chapter or section in a book/report/conference proceedingChapter in a published conference proceeding

1 Citation (SciVal)
63 Downloads (Pure)

Abstract

Modern aerospace structures see increasing use of combinations of thermoplastic and thermoset composite components, requiring the development of efficient joining methods for dissimilar matrix materials. This study aimed to investigate the Mode I fracture toughness and performance of resistance-welded and co-bonded thermoset-thermoplastic composite joints for primary aerospace structural applications. Double cantilever beam and single lap shear trials were performed. It was found that using resistance welding, a significant improvement in the Mode I fracture toughness of approximately 360 % - 520 % over co-bonding can be achieved. Single lap shear tests did not allow any conclusion about the bond strengths due to thermoset laminate failure. Although, combined with optical microscopy of the fracture surfaces, it was possible to show that significant thermal degradation of the thermoset matrix can be avoided.

Original languageEnglish
Title of host publicationECCM 2022 - Proceedings of the 20th European Conference on Composite Materials: Composites Meet Sustainability
Subtitle of host publicationVol 2 - Manufacturing
EditorsA.P. Vassilopoulos, V. Michaud
Place of PublicationLausanne, Switzerland
PublisherComposite Construction Laboratory (CCLab), Ecole Polytechnique Federale de Lausanne (EPFL)
Pages740-747
Number of pages8
Volume2
ISBN (Electronic)9782970161400
DOIs
Publication statusPublished - 12 Dec 2022
Event20th European Conference on Composite Materials: Composites Meet Sustainability, ECCM 2022 - Lausanne, Switzerland
Duration: 26 Jun 202230 Jun 2022

Publication series

NameProceedings of the 20th European Conference on Composite Materials - Composites Meet Sustainability
PublisherEPFL Lausanne, Composite Construction Laboratory
Volume1-6

Conference

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

Keywords

  • Hybrid joints
  • Reistance welding
  • Co-bonding
  • Fracture toughness
  • thermoset-thermoplastic

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