Effect of yarn cross-sectional shape on resin flow through inter-yarn gaps in textile reinforcements
Axial flow through gaps between aligned straight yarns with realistic cross-sectional shapes, described by power-ellipses, was analysed numerically. At a given fibre volume fraction, equivalent gap permeabilities have a maximum at minimum size of elongated tapering parts of the gap cross-section and...
| Main Authors: | , , , |
|---|---|
| Format: | Article |
| Published: |
Elsevier
2018
|
| Subjects: | |
| Online Access: | https://eprints.nottingham.ac.uk/47777/ |
| _version_ | 1848797626841956352 |
|---|---|
| author | Endruweit, Andreas Zeng, X. Matveev, Mikhail Y. Long, Andrew C. |
| author_facet | Endruweit, Andreas Zeng, X. Matveev, Mikhail Y. Long, Andrew C. |
| author_sort | Endruweit, Andreas |
| building | Nottingham Research Data Repository |
| collection | Online Access |
| description | Axial flow through gaps between aligned straight yarns with realistic cross-sectional shapes, described by power-ellipses, was analysed numerically. At a given fibre volume fraction, equivalent gap permeabilities have a maximum at minimum size of elongated tapering parts of the gap cross-section and a ratio of gap width to height near 1. When the yarn spacing is given in addition to the fibre volume fraction, calculated maximum and minimum values for the equivalent permeability of inter-yarn gaps, which occur at near-rectangular and lenticular cross-sections, differ by factors of up to 3.3. Novel approximations for the shape factor and the hydraulic diameter in Poiseuille flow were derived as a function of the fibre volume fraction, the yarn cross-sectional aspect ratio and the exponent describing the shape of the power-elliptical yarn cross-section. This allows the equivalent gap permeability to be predicted with good accuracy for any fibre volume fraction and yarn cross-section. |
| first_indexed | 2025-11-14T20:06:52Z |
| format | Article |
| id | nottingham-47777 |
| institution | University of Nottingham Malaysia Campus |
| institution_category | Local University |
| last_indexed | 2025-11-14T20:06:52Z |
| publishDate | 2018 |
| publisher | Elsevier |
| recordtype | eprints |
| repository_type | Digital Repository |
| spelling | nottingham-477772020-05-04T19:28:59Z https://eprints.nottingham.ac.uk/47777/ Effect of yarn cross-sectional shape on resin flow through inter-yarn gaps in textile reinforcements Endruweit, Andreas Zeng, X. Matveev, Mikhail Y. Long, Andrew C. Axial flow through gaps between aligned straight yarns with realistic cross-sectional shapes, described by power-ellipses, was analysed numerically. At a given fibre volume fraction, equivalent gap permeabilities have a maximum at minimum size of elongated tapering parts of the gap cross-section and a ratio of gap width to height near 1. When the yarn spacing is given in addition to the fibre volume fraction, calculated maximum and minimum values for the equivalent permeability of inter-yarn gaps, which occur at near-rectangular and lenticular cross-sections, differ by factors of up to 3.3. Novel approximations for the shape factor and the hydraulic diameter in Poiseuille flow were derived as a function of the fibre volume fraction, the yarn cross-sectional aspect ratio and the exponent describing the shape of the power-elliptical yarn cross-section. This allows the equivalent gap permeability to be predicted with good accuracy for any fibre volume fraction and yarn cross-section. Elsevier 2018-01-31 Article PeerReviewed Endruweit, Andreas, Zeng, X., Matveev, Mikhail Y. and Long, Andrew C. (2018) Effect of yarn cross-sectional shape on resin flow through inter-yarn gaps in textile reinforcements. Composites Part A: Applied Science and Manufacturing, 104 . pp. 139-150. ISSN 1359-835X Fabrics/textiles; Permeability; Numerical analysis; Resin flow https://doi.org/10.1016/j.compositesa.2017.10.020 doi:10.1016/j.compositesa.2017.10.020 doi:10.1016/j.compositesa.2017.10.020 |
| spellingShingle | Fabrics/textiles; Permeability; Numerical analysis; Resin flow Endruweit, Andreas Zeng, X. Matveev, Mikhail Y. Long, Andrew C. Effect of yarn cross-sectional shape on resin flow through inter-yarn gaps in textile reinforcements |
| title | Effect of yarn cross-sectional shape on resin flow through inter-yarn gaps in textile reinforcements |
| title_full | Effect of yarn cross-sectional shape on resin flow through inter-yarn gaps in textile reinforcements |
| title_fullStr | Effect of yarn cross-sectional shape on resin flow through inter-yarn gaps in textile reinforcements |
| title_full_unstemmed | Effect of yarn cross-sectional shape on resin flow through inter-yarn gaps in textile reinforcements |
| title_short | Effect of yarn cross-sectional shape on resin flow through inter-yarn gaps in textile reinforcements |
| title_sort | effect of yarn cross-sectional shape on resin flow through inter-yarn gaps in textile reinforcements |
| topic | Fabrics/textiles; Permeability; Numerical analysis; Resin flow |
| url | https://eprints.nottingham.ac.uk/47777/ https://eprints.nottingham.ac.uk/47777/ https://eprints.nottingham.ac.uk/47777/ |