The Influence of Low Melt Point, High Modulus Fibers in Blended Fiber Ballistic Resistant Nonwovens

Abstract

The purpose of this research was to examine the presence of a thermal phase change as a means of energy dissipation in nonwoven needlepunched felts used in soft body armor applications. The investigation was carried out using Differential Scanning Calorimetry, Polarized Light Microscopy and standardized V50 ballistic testing. A mathematical formula was developed to approximate the residual kinetic energy of the nonwoven felt. The overall conclusion from the testing was that a thermal phase change did occur as a result of projectile impact; however, the energy dissipation ensuing from this phase change has not proven to be a major contribution to the nonwoven felt’s elevated anti-ballistic properties.