FLEXURAL BEHAVIOUR OF POLYURETHANE FOAM FILLED HIGH PERFORMANCE 3-D WOVEN I-BEAM COMPOSITES

Eyuphan Kucukkalfa, Melisa Dincer, Emir Karci, M. Ali Vural, Kaan Yildiz, Elif Ozden-Yenigun, Basak Ozkendirci, Hulya Cebeci

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

2 Citations (Scopus)

Abstract

Sandwich composites have several industrial applications due to their lightweight and high specific strength. Strengthened polymeric foams by nano-reinforcement have high contact surface between core and face-sheets bring advantages including elimination of the face-sheet and core debonding and water accumulation in the structure. Furthermore, filling area between the web and the flanges of I-beams with polymeric foams can enhance strength and load bearing capacity while assisting structural integrity. In this work, polymeric foams and 3-D woven composites are combined to obtain high-performance I-beam composites. Foaming process of neat and 0.1 wt.% carbon nanotube (CNT) reinforced polyurethane foams was achieved in the area between the web and the flanges of 3-D woven glass fibers by a novel free-rise foaming method. Composites were fabricated by the vacuum infusion method, and three-point bending tests were performed to evaluate the increment in load bearing capacity, flexural strength and flexural modulus.

Original languageEnglish
Title of host publicationMaterials
EditorsAnastasios P. Vassilopoulos, Veronique Michaud
PublisherComposite Construction Laboratory (CCLab), Ecole Polytechnique Federale de Lausanne (EPFL)
Pages203-210
Number of pages8
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

Bibliographical note

Publisher Copyright:
© 2022 Küçükkalfa et al.

Keywords

  • 3-D woven I-beam composites
  • Structural integrity
  • carbon nanotubes
  • flexural strength
  • polyurethane foam

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