Consumer testing of bicycle helmets
Paper i proceeding, 2017

© 2017 International Research Council on the Biomechanics of Injury. All rights reserved. Current bicycle helmet standards do not include angular acceleration, for certification even though it is known that it is the dominant cause of brain injury. The objective of this study was to develop an improved test method, including oblique impacts, to evaluate helmets sold on the European market. Four physical tests were conducted, shock absorption with straight perpendicular impact and three oblique impact tests. Computer simulations were made to evaluate injury risk. In total, 17 conventional helmets and one airbag helmet were included. All helmets except five showed a linear acceleration lower than 180 g, which corresponds to a low risk of skull fracture. The airbag helmet performed three times better than the conventional helmets (48 g vs. an average of 175 g). The simulations indicated that the strain in the grey matter of the brain during oblique impacts varied between helmets from 6% to 44%, where 26% corresponds to 50% risk for a concussion. The lowest strain was measured in the brain when the airbag helmet was tested. Helmets equipped with Multi-directional Impact Protection System (MIPS) performed better than the others. However, all helmets need to reduce rotational acceleration more effectively. A helmet that meets the current standards does not necessarily prevent concussion.

Head injury

Angular acceleration

Oblique impact tests

Helmets

Bicycles

Författare

H. Stigson

Karolinska Institutet

Folksams forskningsstiftelse

Matteo Rizzi

Folksams forskningsstiftelse

Anders Ydenius

Folksams forskningsstiftelse

Emma Engström

Folksams forskningsstiftelse

Anders Kullgren

Chalmers, Tillämpad mekanik, Fordonssäkerhet

Folksams forskningsstiftelse

Conference proceedings International Research Council on the Biomechanics of Injury, IRCOBI

2235-3151 (ISSN)

Vol. 2017-September 173-181

2017 International Research Council on the Biomechanics of Injury Conference, IRCOBI 2017
Antwerp, Belgium,

Ämneskategorier

Annan medicinteknik

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Senast uppdaterat

2019-01-07