@article{ref1,
title="Non-perpendicular impacts - an experimental study on crash helmets",
journal="Proceedings of the International Research Council on the Biomechanics of Injury conference",
year="1976",
author="Aldman, B. and Lundell, B. and Thorngren, L.",
volume="4",
number="",
pages="322-331",
abstract="In two-wheel vehicle accidents, the head of the occupant in many cases may hit the ground with a horizontal velocity. Due to friction, this can result in angular accelerations of the head which may prove to be injury-producing. A test method has been developed with the purpose of investigating the effect of different helmet shell materials on the kinematics of the head at impact. The test device utilizes a dummy head and neck attached to a rail-guided free-falling carriage. Simulated road surfaces can be attached to a rotating disc. Linear and angular head accelerations in three perpendicular directions as well as rotation and lateral flexion of the neck have been recorded. Results from a preliminary test series are presented with reference to some published tolerance levels. (a).<p />",
language="en",
issn="2235-3151",
doi="",
url="http://dx.doi.org/"
}