Assessment of tensile and damping behaviour of hybrid particle/woven fibre/polymer composites

摘要

Woven fibre composites fall under a class of advance material whose mechanical properties can be further enhanced by reinforcing particles resulting in a hybrid composite. Current research focuses on micromechanical model based finite element formulation of a beam made of woven E-glass/epoxy with the incorporation of alumina particles. Elastic properties of the composites are estimated considering Neilsen, Mod-Tanaka and equivalent modulus theory along with woven micro-mechanics. Viscoelastic parameters extracted through operator based approach are used in the finite element formulation to include damping behaviour. Experiments are conducted to estimate the elastic constants and modal damping parameters of the structure. The theoretical results are verified with experiments and found to be in good convergence. Further, analyses are conducted to study the effect of structural and geometrical parameters of woven fabric lamina on the dynamic characteristics of the hybrid composites. From these investigations, it is observed that the hybrid composite shows superior mechanical behaviour compared to the particulate composite.