Abstract
We propose a new experimental method using a Hassler cell and air injection to measure the permeability of fiber preform while avoiding a race tracking effect. This method was proven to be particularly efficient to measure very low through-thickness permeability of preform fabricated by automated dry fiber placement. To validate the reliability of the permeability measurement, the experiments of viscous liquid infusion into the preform with or without a distribution medium were performed. The experimental data of flow front advancement was compared with the numerical simulation result using the permeability values obtained by the Hassler cell permeability measurement set-up as well as by the liquid infusion experiments. To address the computational cost issue, the model for the equivalent permeability of distribution medium was employed in the numerical simulation of liquid flow. The new concept using air injection and Hassler cell for the fiber preform permeability measurement was shown to be reliable and efficient.
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Acknowledgements
The first and fourth authors appreciate the financial support from the European Commission to the CANAL (Creating Non-Conventional Laminates) project within the 7th framework program. The second, third and fifth authors would like to acknowledge the European Union (European Regional Development Fund FEDER), the French state and the Hauts-de-France Region Council for co-funding the ELSAT2020 by CISIT project (POPCOM action).
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Agogue, R., Chebil, N., Deleglise-Lagardere, M. et al. Efficient Permeability Measurement and Numerical Simulation of the Resin Flow in Low Permeability Preform Fabricated by Automated Dry Fiber Placement. Appl Compos Mater 25, 1169–1182 (2018). https://doi.org/10.1007/s10443-017-9659-8
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DOI: https://doi.org/10.1007/s10443-017-9659-8