A permeability prediction for non-crimp fabrics

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A model is proposed to analyse the variation in the permeability of Non–Crimp Fabrics, originating from variations in the internal structure of the material. A geometrical description of the fabric based on the distortion induced by the stitch threads piercing through the fabric is employed. The distortions form channels which are mutually connected. It is assumed that these channels dominate the permeability of the fabric. A network of flow channels is subsequently defined, in which the variations, measured in the dimensions of the distortions, is explicitly accounted for. The variations in the internal structure of the fabric affect the averaged permeability significantly. Moreover, a network rather that a single unit cell is required to predict the averaged permeability and its variation properly. Finally, the spatial distribution of the randomly generated channel dimensions affects the permeability significantly.
Original languageUndefined
Title of host publicationProceedings of the International ESAFORM conference on Material Forming, 26-28 April 2006, Glasgow, UK
EditorsN. Juster, A. Rosochowski
Place of PublicationGlasgow, UK
PublisherPublishing House AKAPIT
Number of pages4
ISBN (Print)83-89541-68-8
Publication statusPublished - 26 Apr 2006
Event9th International ESAFORM Conference on Material Forming 2006 - Glasgow, United Kingdom
Duration: 26 Apr 200628 Apr 2006
Conference number: 9


Conference9th International ESAFORM Conference on Material Forming 2006
Abbreviated titleESAFORM 2006
CountryUnited Kingdom


  • METIS-236291
  • IR-69994

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