### Abstract

Original language | Undefined |
---|---|

Title of host publication | Proceedings of FPCM-7 |

Editors | S.G. Advani |

Place of Publication | Newark, USA |

Publisher | University of Delaware |

Pages | 367-372 |

Number of pages | 5 |

Publication status | Published - 2004 |

### Keywords

- METIS-221571
- IR-70023

### Cite this

*Proceedings of FPCM-7*(pp. 367-372). Newark, USA: University of Delaware.

}

*Proceedings of FPCM-7.*University of Delaware, Newark, USA, pp. 367-372.

**A permeability prediction for (Un)Sheared non-crimp fabrics.** / Loendersloot, Richard; Akkerman, Remko; Lomov, S.V.

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution › Academic › peer-review

TY - GEN

T1 - A permeability prediction for (Un)Sheared non-crimp fabrics

AU - Loendersloot, Richard

AU - Akkerman, Remko

AU - Lomov, S.V.

PY - 2004

Y1 - 2004

N2 - A permeability prediction model for relaxed and sheared Non-Crimp Fabrics is proposed. The model is based on geometrical features of the fabric. The stitches penetrating the uni-directional plies of the NCF induce distortions of the fibres in the plane of the fabric. These Stitch Yarn induced fibre Distortions (SYD) form flow channels, which determine the permeability of the NCF. The channels are connected to each other in overlap regions, allowing the fluid to flow from one channel to another and finally to impregnate the entire preform. A network of SYD flow channels is created to account for the statistical variations in the dimensions of the SYDs. The system of flow resistances is solved analogously to the solution of the effective resistance of an electrical circuit with parallel and serial resistances. The flow in each of the SYD domains is calculated employing an energy minimisation method. Analysis of different networks, with varying spatial distribution of the dimensions of the flow channels, allows the prediction of the variation in the permeability of an NCF

AB - A permeability prediction model for relaxed and sheared Non-Crimp Fabrics is proposed. The model is based on geometrical features of the fabric. The stitches penetrating the uni-directional plies of the NCF induce distortions of the fibres in the plane of the fabric. These Stitch Yarn induced fibre Distortions (SYD) form flow channels, which determine the permeability of the NCF. The channels are connected to each other in overlap regions, allowing the fluid to flow from one channel to another and finally to impregnate the entire preform. A network of SYD flow channels is created to account for the statistical variations in the dimensions of the SYDs. The system of flow resistances is solved analogously to the solution of the effective resistance of an electrical circuit with parallel and serial resistances. The flow in each of the SYD domains is calculated employing an energy minimisation method. Analysis of different networks, with varying spatial distribution of the dimensions of the flow channels, allows the prediction of the variation in the permeability of an NCF

KW - METIS-221571

KW - IR-70023

M3 - Conference contribution

SP - 367

EP - 372

BT - Proceedings of FPCM-7

A2 - Advani, S.G.

PB - University of Delaware

CY - Newark, USA

ER -