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Influence of the micro-structure on saturated transverse flow in fibre arrays

Gommer, Frank; Endruweit, Andreas; Long, Andrew C.

Authors

Frank Gommer f.gommer@nottingham.ac.uk

ANDREW LONG ANDREW.LONG@NOTTINGHAM.AC.UK
Provost and Deputy Vice-Chancellor



Abstract

This study analyses the influence of the random filament arrangement in fibre bundles on the resin flow behaviour. Transverse steady-state resin flow which occurs behind a liquid resin flow front was simulated numerically through statistically equivalent micro-structures at high fibre volume fractions, Vf >0.6, as observed in fibre bundles. The need of applying a minimum gap distance between neighbouring filaments was overcome by automated local mesh refinement. The derived permeability values showed significant scatter. Convergence of these values was determined at a ratio of flow length to filament radius greater than 20 for all three analysed fibre volume fractions. Mean permeabilities were between 6 and 10 times lower than those predicted for a hexagonal fibre array. A statistical model is proposed which is able to predict the scatter of observed permeabilities based on simple micro-structural descriptors.

Citation

Gommer, F., Endruweit, A., & Long, A. C. (2018). Influence of the micro-structure on saturated transverse flow in fibre arrays. Journal of Composite Materials, 52(18), 2463-2475. https://doi.org/10.1177/0021998317747954

Journal Article Type Article
Acceptance Date Nov 15, 2017
Online Publication Date Jan 4, 2018
Publication Date Aug 1, 2018
Deposit Date Nov 24, 2017
Publicly Available Date Jan 4, 2018
Journal Journal of Composite Materials
Print ISSN 0021-9983
Electronic ISSN 1530-793X
Publisher SAGE Publications
Peer Reviewed Peer Reviewed
Volume 52
Issue 18
Pages 2463-2475
DOI https://doi.org/10.1177/0021998317747954
Keywords Fibres; Microstructures; Numerical analysis; Resin flow
Public URL http://eprints.nottingham.ac.uk/id/eprint/48367
Publisher URL http://journals.sagepub.com/doi/abs/10.1177/0021998317747954
Copyright Statement Copyright information regarding this work can be found at the following address: http://creativecommons.org/licenses/by/4.0

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Copyright Statement
Copyright information regarding this work can be found at the following address: http://creativecommons.org/licenses/by/4.0





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