Oblique impact testing of bicycle helmets
نویسندگان
چکیده
The performance of bicycle helmets was investigated in oblique impacts with a simulated road surface. The linear and rotational accelerations of a headform, fitted with a compliant scalp and a wig, were measured. The peak rotational accelerations, the order of 5 krad s when the tangential velocity component was 4 m s, were only slightly greater than in comparable direct impact tests. Oblique impact tests were possible on the front lower edge of the helmet, a site commonly struck in crashes, without the headform striking the ‘road’. Data characterizing the frictional response at the road/shell and helmet/head interfaces, was generated for interpretation via FEA modelling.
منابع مشابه
Comments on Depreitere et al. Lateral head impacts and protection of the temporal area by bicycle safety helmets. J. Trauma. 2007;62:1440.
The side of the head is vulnerable to trauma in bicycle injuries. Depreitere et al., demonstrated contact between a flat-faced pendulum, and the side of cadaver heads, when bicycle helmets was worn. Computer design methods were used to interpret these experiments, showing that typical helmets safely absorbed 75% of the impact kinetic energy before pendulum-to-head contact occurred. Furthermore,...
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