1Police Scientific Development Branch, Home Office, Woodcock Hill, Sandridge, St. Albans, Herts, AL4 9HQ, England
An instrumented head system has been constructed using a Hybrid III headform mounted on a Eurosid neck unit. A n-i-axial array of nine linear accelerometers was used to enable measurements to be made of both the linear and angular accelerations experienced by the heaclform during impacts from a variety of missiles designed to replicate the real-life threats experienced by police officers in the course of their duties. The design, construction and validation of the system are described. The results for different helmets are presented and discussed and comparison made with other published work in related areas. It has been demonstrated that: