Imperial College London
Alternate

Dr Mazdak Ghajari

Faculty of Engineering, Dyson School of Design Engineering

Reader in Brain Biomechanics
 
 
 
//

Contact

 

+44 (0)20 7594 9236m.ghajari Website

 
 
//

Location

 

Dyson BuildingSouth Kensington Campus

//

Summary

 

Publications

Citation

BibTex format

@article{Yu:2022:10.1007/s10439-022-02936-x,
author = {Yu, X and Ghajari, M},
doi = {10.1007/s10439-022-02936-x},
journal = {Annals of Biomedical Engineering},
pages = {1579--1595},
title = {Protective performance of helmets and goggles in mitigating brain biomechanical response to primary blast exposure},
url = {http://dx.doi.org/10.1007/s10439-022-02936-x},
volume = {50},
year = {2022}
}
Download

RIS format (EndNote, RefMan)

TY  - JOUR
AB  - The current combat helmets are primarily designed to mitigate blunt impacts and ballistic loadings. Their protection against primary blast wave is not well studied. In this paper, we comprehensively assessed the protective capabilities of the advanced combat helmet and goggles against blast waves with different intensity and directions. Using a high-fidelity human head model, we compared the intracranial pressure (ICP), cerebrospinal fluid (CSF) cavitation, and brain strain and strain rate predicted from bare head, helmet-head and helmet-goggles-head simulations. The helmet was found to be effective in mitigating the positive ICP (24-57%) and strain rate (5-34%) in all blast scenarios. Goggles were found to be effective in mitigating the positive ICP in frontal (6-16%) and lateral (5-7%) blast exposures. However, the helmet and goggles had minimal effects on mitigating CSF cavitation and even increased brain strain. Further investigation showed that wearing a helmet leads to higher risk of cavitation. In addition, their presence increased the head kinetic energy, leading to larger strains in the brain. Our findings can improve our understanding of the protective effects of helmets and goggles and guide the design of helmet pads to mitigate brain responses to blast.
AU  - Yu,X
AU  - Ghajari,M
DO  - 10.1007/s10439-022-02936-x
EP  - 1595
PY  - 2022///
SN  - 0090-6964
SP  - 1579
TI  - Protective performance of helmets and goggles in mitigating brain biomechanical response to primary blast exposure
T2  - Annals of Biomedical Engineering
UR  - http://dx.doi.org/10.1007/s10439-022-02936-x
UR  - https://www.ncbi.nlm.nih.gov/pubmed/35296943
UR  - https://link.springer.com/article/10.1007/s10439-022-02936-x
UR  - http://hdl.handle.net/10044/1/95949
VL  - 50
ER  -
Download