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Enhancing CFRP damping with graphene nanoplatelets: experiments versus finite element analysis
Ch V Katsiropoulos1,2, G I Giannopoulos3, P Pappas2
1Department of Chemical Engineering, University of Patras, Patras 26504, Greece.
Nanotechnology
|January 8, 2025
Summary
Adding graphene nanoplatelets (GNPs) to carbon fiber-reinforced polymer (CFRP) composites significantly improves their damping capabilities. This enhancement was validated through experiments and a validated finite element model, showing GNP concentration
Area of Science:
- Materials Science
- Composite Materials
- Nanotechnology
Background:
- Carbon fiber-reinforced polymers (CFRPs) are widely used but often require improved damping.
- Graphene nanoplatelets (GNPs) offer potential for enhancing composite material properties.
Purpose of the Study:
- To investigate the effect of graphene nanoplatelets (GNPs) on the damping properties of CFRP composites.
- To develop and validate a computational model for predicting the damping behavior of GNP-enhanced CFRPs.
Main Methods:
- Fabrication of epoxy and CFRP specimens with varying GNP concentrations.
- Free vibration experiments to measure damping ratios.
- Development of a finite element method (FEM) model using representative volume elements.
Main Results:
- Experimental results demonstrated a clear enhancement in damping with increasing GNP concentration.
- The FEM model accurately predicted the damping performance of the hybrid nanocomposites.
- A strong correlation was observed between experimental and numerical damping data.
Conclusions:
- Graphene nanoplatelets effectively enhance the damping properties of CFRP composites.
- The developed FEM model is a reliable tool for simulating and predicting damping in these advanced materials.
- GNP mass fraction is a critical factor in achieving improved damping in CFRPs.
