1. Felting as a new method for Z-reinforcement of fabric-layered composite materials.
- Author
-
Sapozhnikov, S. B., Buslaeva, O. S., Forental, G. A., Gorkunov, Eduard, Panin, Victor E, and Irschik, Hans
- Subjects
COMPOSITE materials ,LAMINATED materials ,SHEAR strength ,YARN ,SHEARING force ,THERMOPLASTIC composites ,TRANSVERSAL lines - Abstract
A new method of transversal strengthening of a laminated fabric-reinforced composite is proposed. The fabric pack is punched with needles for felting, which partly pull out and damage the warp/weft threads by barbs, pulling some fibers in the direction of thickness (Z-direction). By increasing the density of needle punches per unit area in the felting zone, it is possible to increase the ability of a layered composite to resist transversal tension or shear stresses. In this case, the strength of the composite in the XY plane decreases slightly. By the example of the single-lap joint of composites (plain weave fabric with a thermoplastic binder), it was shown that felting with a punching density of 30...60 cm
−2 about doubles the shear strength in comparison with typical glued samples without felting. [ABSTRACT FROM AUTHOR]- Published
- 2020
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