Basic Studies of Injury BioMechanics-4 : Practical Estimations

Abstract

The human injuries were composed of two sets of various factors, which were a set of physical factors and that of biomedical factors. The physical factors were simply determined by four factors containing the collision's times (impact response time), an area of injury, height of falling and weight of injury's region. The injury' criteria, AIS and HIC were calculated for average Japanese men and women by adopting hypothesis of free falling & rotation, and those physical four factors. The most severe case of falling and descent was to be colliding with both big dummies. The injury of AIS>4 gave rise to the fetal traumas in the head when the big dummies collide with each other at speed 5km/h. We can efficiently reduced the lethal rate of traumas when we worn protectors made up Styrofoam. However, I was desirable to improve our present protectors since we sometimes had large outliers of impacts.