Research on the creation of new UD laminates and its ballistic performance using CSC aramid yarns via experiment and FEA analysis

In this paper, a new type of core-spun compound aramid yarn has been applied in the construction of UD fabric to investigate if the ballistic performance of the whole fabric could be positively influenced. Three types of fabrics (Fa, Fb and Fc) herein have been developed. Fa is the traditional type of UD fabric with two layers laying at the angle of 0°/90°. Fb is made by adding new CSC aramid yarns inside of Fa at the angle of 0°/90°. Fc is further developed from Fb via changing yarn-ply directions as 45°/-45°, to analyze if the yarn-ply directions would influence on the ballistic performance of new UD fabric. The result is quite positive, as it shows that Fb and Fc have apparent energy absorption capability than Fa, and Fc is the best. This indicates that the introduction of core-spun compound aramid yarns could indeed improve the ballistic performance of UD fabric, and the yarn-ply direction of 45°/-45° is better than that of 0°/90° to absorb more energy. This research has been investigated with the assistance of both the ballistic test and the FEA model. Energy absorption and penetration resistance mechanism are the two major aspects to analyze to reflect the ballistic performance of these fabrics.