Conference paper
A Characterization Study Relating Cross-Sectional Distribution of Fiber Volume Fraction and Permeability
Manufacturing Engineering, Department of Mechanical Engineering, Technical University of Denmark1
Department of Mechanical Engineering, Technical University of Denmark2
Fiberline Composites A/S3
Composite Mechanics and Structures, Department of Wind Energy, Technical University of Denmark4
Department of Wind Energy, Technical University of Denmark5
In the present study, Scanning Electron Microscopy (SEM) has been used to assess the influence of a varying cross-sectional fiber volume fraction on local permeability values. The investigated sample is a textured glass fiber reinforced polyurethane composite rod with an Ø5mm cross-section. The SEM investigations show a high variation in local fiber volume fraction with a mean fiber volume fraction of 0.41±0.2, which is in agreement with the value 0.41 obtained by burn-off test by the manufacturer.
The additional result from the SEM investigations was a mean fiber diameter of 23.2±2.6μm, which was verified by single fiber tests. The characterization results were successfully used to evaluate the local variation in permeability over the cross-section and could most likely be a very essential input for numerical impregnation simulations.
Language: | English |
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Year: | 2019 |
Proceedings: | 22nd International Conference on Composite Materials 2019 |
Types: | Conference paper |
ORCIDs: | Sonne, Mads R. , Mikkelsen, Lars P. and Hattel, Jesper H. |