1987 Volume 44 Issue 1 Pages 29-33
High impact properties, such as shotgun shooting, of various thermoplastic resins were investigated. The following results were obtained. A high speed piercing test which yields the same fracture pattern as that for shotgun shooting can estimate the results of shotgun shooting impact. The fracture energy of high speed piercing can be expressed with a simple experimental equation in terms of velocity (piercing velocity: 0.1-10m/s) on various thermoplastic resins. The equation can estimate the fracture energy of a pellet (pellet velocity -300 m/s). The fracture behavior of high speed piercing can be explained qualitatively by use of a Voigt model of visco-elasticity. The thermoplastic styrene elastmer or urethane elastmer has the highest value of fracture energy.
