Abstract
The aim of this paper is to present the results of a study showing the potential use of nonwoven textile structures as reinforcement in composite applications. Lightweight 3D porous composite materials have been developed from sandwich nonwovens obtained by combining several nonwoven monolayers manufactured with needlepunching and/or hydroentanglement consolidation treatments. The different structures - nonwovens and composites have been characterized, essentially with a quasi-static compression. Theoretical models have been applied to evaluate the fibre arrangement through the average fibre contact length or equivalent pore size inside the material. A difference in behaviour in compression has been observed for the different structures, and has been explained in terms of the different fibre arrangement inside the nonwoven structure which is related to the process.
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