No abstract

Abstract. Based on the beam theory, a compaction model of 0°/90°non-crimp fabrics was developed to investigate the relationship between the thickness and compression load. A layer of 0°/90°non-crimp fabrics can be treated as two-layer unidirectional fabrics: one layer with 0°and another with 90°. The change of fabric thickness was then modeled as the sum of 0°and 90°unidirectional fabrics. To validate the theoretical model, experiments with 3, 4, 5 and 50 layers were carried out.

Abstract. Permeabilities one of the key parameters controlling infiltration of the fabrics in Resin Transfer Molding. In this paper, the in-plane permeability of 0°/90° non-crimp fabrics was modeled as a function of geometrical yarn parameters. The unit cell was decomposed into four different zones of characteristic yarn arrangement. The overall permeability was then modeled as a mixture of permeabilities of different zones with the electrical resistance analogy. With the predictive model, the influence of yarn parameters was deeply researched. And permeability predictions show satisfactory agreement with experimental data obtained byin-plane permeability measurements.

No abstract