Mechanical Characterization and Evaluation of Effects of Epoxy in Lamination for Kevlar Composites

Abstract

Abstract: Hybrid type of composites have considerable budding for certain specific strength and stiffness, efficacious in industries such as submarines, aerospace, and medium duty automotives. The macroscopic and microscopic properties of the hybrid composites can be enhanced by making the various layers of the epoxy and Kevlar in various directions. The lay up using the epoxy in various combinations can lead to promote the mechanical properties. Each of the constituent present in the Kevlar composite can make the difference in the tensile strength, bonding strength. The experiments with various combinations of the resin and hardener are always there in the researchers mind to find the effects of each individual over the other properties of the composite. In this voyage the optimal mix of that particular element in this instance the epoxy usage influence will be found out. The mechanical properties such as the tensile strength, binding strength in between the fabric and matrix will be found. 3 unique sheets, namely P (3:2), Q (4:1) and R (2:3) are fixed by the hand layup procedure to make a conglomerate composite. Experimental analysis in accordance with the ASTM standards of 3039, are exhibited to paramount the mechanical properties. Delamination tests are then performed as per ASTM standard to find out the inter layer laminar strength in between the Kevlar fiber and glass layers. The outcomes archived indicate that sample of glass/Kevlar fiber-based hybrid composite in the mix of 3:2 in lamination is best with respect to mechanical properties and it has also shown the least swelling ratio, in addition to it material system composed of 4:1 mix details the optimal adhesion capabilities and inter laminar properties.

Index Terms: Mechanical characterization, Evaluation, epoxy, Lamination, Kevlar, Composites.