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 language | English |
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Title of host publication | Materials |
Editors | Anastasios P. Vassilopoulos, Veronique Michaud |
Publisher | Composite Construction Laboratory (CCLab), Ecole Polytechnique Federale de Lausanne (EPFL) |
Pages | 203-210 |
Number of pages | 8 |
ISBN (Electronic) | 9782970161400 |
Publication status | Published - 2022 |
Event | 20th European Conference on Composite Materials: Composites Meet Sustainability, ECCM 2022 - Lausanne, Switzerland Duration: 26 Jun 2022 → 30 Jun 2022 |
Publication series
Name | ECCM 2022 - Proceedings of the 20th European Conference on Composite Materials: Composites Meet Sustainability |
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Volume | 1 |
Conference
Conference | 20th European Conference on Composite Materials: Composites Meet Sustainability, ECCM 2022 |
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Country/Territory | Switzerland |
City | Lausanne |
Period | 26/06/22 → 30/06/22 |
Bibliographical note
Publisher Copyright:© 2022 Küçükkalfa et al.
Keywords
- 3-D woven I-beam composites
- Structural integrity
- carbon nanotubes
- flexural strength
- polyurethane foam