Imperial College London
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ProfessorDavidSharp

Faculty of Medicine, Department of Brain Sciences

Professor of Neurology
 
 
 
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Contact

 

+44 (0)20 7594 7991david.sharp Website

 
 
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Location

 

UREN.927Sir Michael Uren HubWhite City Campus

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Summary

 

Publications

Citation

BibTex format

@article{Siegkas:2019:10.1038/s41598-019-39953-1,
author = {Siegkas, P and Sharp, D and Ghajari, M},
doi = {10.1038/s41598-019-39953-1},
journal = {Scientific Reports},
pages = {1--10},
title = {The traumatic brain injury mitigation effects of a new viscoelastic add-on liner},
url = {http://dx.doi.org/10.1038/s41598-019-39953-1},
volume = {9},
year = {2019}
}
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RIS format (EndNote, RefMan)

TY  - JOUR
AB  - Traumatic brain injury (TBI) affects millions of people worldwide with significant personal and social consequences. New materials and methods offer opportunities for improving designs of TBI prevention systems, such as helmets. We combined empirical impact tests and computational modelling to test the effectiveness of new viscoelastic add-on components in decreasing biomechanical forces within the brain during helmeted head impacts. Motorcycle helmets with and without the viscoelastic components were fitted on a head/neck assembly and were tested under oblique impact to replicate realistic accident conditions. Translational and rotational accelerations were measured during the tests. The inclusion of components reduced peak accelerations, with a significant effect for frontal impacts and a marginal effect for side and rear impacts. The head accelerations were then applied on a computational model of TBI to predict strain and strain-rate across the brain. The presence of viscoelastic components in the helmet decreased strain and strain-rate for frontal impacts at low impact speeds. The effect was less pronounced for front impact at high speeds and for side and rear impacts. This work shows the potential of the viscoelastic add-on components as lightweight and cost-effective solutions for enhancing helmet protection and decreasing strain and strain-rate across the brain during head impacts.
AU  - Siegkas,P
AU  - Sharp,D
AU  - Ghajari,M
DO  - 10.1038/s41598-019-39953-1
EP  - 10
PY  - 2019///
SN  - 2045-2322
SP  - 1
TI  - The traumatic brain injury mitigation effects of a new viscoelastic add-on liner
T2  - Scientific Reports
UR  - http://dx.doi.org/10.1038/s41598-019-39953-1
UR  - https://www.nature.com/articles/s41598-019-39953-1
UR  - http://hdl.handle.net/10044/1/67394
VL  - 9
ER  -
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