Effects of Volume of Carbon Nanotubes on the Angled Ballistic Impact for Carbon Kevlar Hybrid Fabrics

Abstract

Investigations of the angled ballistic impact behavior on Carbon Kevlar® Hybrid fabrics with assorted volumes of carbon nanotubes (CNTs) into epoxy are presented. The ballistic impact behavior of the epoxy composites with/without CNTs is compared. Individual impact studies are conducted on the composite plate made-up of Carbon Kevlar Hybrid fabrics with diverse volumes of CNTs. The plate was fabricated with eight layers of equal thickness arranged in different percentages of CNTs. A conical steel projectile is considered for a high velocity impact. The projectile is placed very close to the plate, at the centre and impacted with sundry speeds. The variation of the kinetic energy, the increase in the internal energy of the laminate and the decrease in the velocity of the projectile with disparate angles are also studied. Based on the results, the percentage of CNTs for the ballistic impact of each angle is suggested. The solution is based on the target material properties at high ballistic impact resistance, the inclined impact and the CNT volumes. Using the ballistic limit velocity, contact duration at ballistic limit, surface thickness of target and the size of the damaged zone are predicted for fabric composites.

Mechanical Performance and Applications of CNTs Reinforced Polymer Composites—A Review

“…The varied applications of these polymer nanocomposites rely on the superior properties possessed by the CNTs themselves. Furthermore, the good compatibility of CNTs with polymer matrices has increased the potential of these materials for being used in a variety of advanced applications, such as electronics, automotive, textiles, aerospace, sports equipment, sensors, energy storage devices, filters [ 4 , 106 , 107 , 108 , 109 , 110 ].…”

Negative Thermal Expansion of Carbon Nanotube Bundles

“…As mentioned in Section 1, the in-plane NTE of 2D materials is explained by lateral thermal fluctuations (excitation of phonon ZA modes), which lead to in-plane shrinkage. [27,28,[38][39][40] This mechanism should also work for CNT bundles due to a decrease in the effective diameter of CNTs owing to bending of the CNT walls due to thermal fluctuations. To test this assumption, the average CNT diameter is calculated as follows…”

“…[28] Out-of-plane bending of membrane-like materials results in in-plane shrinkage as the temperature rises. [27,[38][39][40] Single-layer graphene can demonstrate NTE at temperatures above 2300 K due to the high-frequency optical ZO mode with a small negative Grüneisen parameter. [27,38] The effect of doping with B and N on the NTE of graphene was considered in a first-principles study.…”

Fractal Approach to Mechanical and Electrical Properties of Graphene/Sic Composites

“…In this paper we will apply the fractal theory to the study of the electronic properties of carbon nanotubes [30,31], graphene and graphene-based composites.…”