The effect of strain rate and fibre content on the Poisson’s ratio of glass/epoxy composites

The utilisation of composite materials in structural applications has prompted the need for a full characterisation of their behaviour under dynamic loading conditions. The strain rate effects of most unfilled polymers can be described by the Eyring theory of viscosity which assumes that the deformation of a polymer involves the motion of a chain molecule over potential energy barriers. The Eyring model suggests that yield stress varies linearly...