TITLE:
Effect of the Weaving Density of Aramid Fabrics on Their Resistance to Ballistic Impacts
AUTHORS:
Jung Seop Lim, Bum Hoon Lee, Chang Bae Lee, In-Sik Han
KEYWORDS:
Aramid Fiber; Fabrics/Textiles; Impact Behavior
JOURNAL NAME:
Engineering,
Vol.4 No.12A,
December
31,
2012
ABSTRACT:
Two Heracron? woven fabrics, HT600-1 and HT600-2, were fabricated with different weaving
densities and their resistance to ballistic impact was investigated. While
HT600-1 was inherently stronger along the weft than HT600-2, the latter
exhibited a higher tensile strength along the warp. Crimp values indicate that
HT600-1, which possesses a relatively larger weft weaving density, induces an
excess in the warp crimp ratio, thereby weakening the fabric along the warp.
The dimensionless fiber property U*, which is defined as the product of the
specific fiber toughness and the strain wave velocity, was calculated for each
fabric. The U* values of HT600-1 were lower than those of HT600-2; U* values
along the warp of HT600-1 were extremely low. These analyses show that HT600-2
exhibited improved ballistic properties over those of HT600-1. These findings
further indicate the existence of an optimal weave that would minimize damage
to both yarn and fabric. Establishing these optimal conditions can be crucial
in implementing better ballistic properties into fabrics.