Mechanical properties of structurally stitched non-crimp fabric composites
N. Himmel, Institut für Verbundwerkstoffe GmbH Germany
H. Heß, BASF Engineering Plastics Europe, Germany*
Abstract:
The mechanical performance of polymer matrix composites perpendicular to the laminate plane can be improved by the insertion of local through-thickness reinforcements into dry fibre preforms by structural stitching. On the other hand, the in-plane stiffness and strength properties of the laminate may be reduced by this process though the induction of in-plane fibre undulations and the formation of voids in the vicinity of stitches after resin infusion. In this chapter the effect of structural stitching on in-plane and out-of-plane properties ...
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