Fundamental Studies of Safety Assessment for Collision and Fall induced Human Injury : 1^<st> report, Understanding of Fundamental Phenomena in Dummy by Collision and Fall

Abstract

This paper describes studies to understand the fundamental mechanism of the collision and fall induced human injury by using dummy in the experiment. In our dummy experiments, the dummy on the cart is collided by the other dummy and fallen on the floor It is concluded that (1) the time interval of these two forces was 800ms, and it is possible to use this interval for developing safety devices for these human falls, (2) the injure criteria was effected by the initial position and pose of dummy, (3). HIC (Head Injury Criteria) decrease under the safety area with helmet in all cases of these dummy experiments.