Ballistic Performance of Kevlar49/ UHMW-PEHB26 Hybrid Layered-Composite
Abstract
This experimental study investigates the effects
of plies number on ballistic performance of Kevlar49/ UHMW-PEHB26 (ultra
high molecular weight polyethylene) layered-hybrid composite. Ballistic
performance of the composite samples is explained in terms of trauma depth, energy
absorption capacity and the mechanisms
that lead to perforation in varied
composite samples. Ballistic tests are performed according to NIJ 0101.04 Level-III standards. The results is showed that the produced composite samples excluding Type
V-composite provide Level IIIA protection according to NIJ 0101.04 standard.
The critical number of ply for Kevlar49/
UHMW-PEHB26 layered-hybrid composite is obtained as 16 plies consisting of 8 plies for each fabrics. Trauma depth increases with decreasing total number of plies in the
composite samples. The energy absorption capability of the layered-composite
decreases with decreasing total number of plies. Energy absorption mechanisms
are explained by strain energy of the plies due to straining and fracture of
yarns, delamination of plies and layers, and friction energy between plies, and
the mobility of yarns.
Keywords
References
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