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Protection capability of bicycle helmets under oblique impact assessed with two separate brain FE models
KTH, School of Technology and Health (STH), Medical Engineering, Neuronic Engineering.
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2017 (English)In: Conference proceedings International Research Council on the Biomechanics of Injury, IRCOBI, International Research Council on the Biomechanics of Injury , 2017, p. 190-200Conference paper, Published paper (Refereed)
Abstract [en]

The present study proposes a bicycle helmet evaluation under oblique impact based on a coupled experimental versus numerical test method using two separate brain FE models. For each of the 17 helmet types three oblique impacts have been conducted and the 6D headform acceleration curves have been considered as the initial conditions of the brain injury risk assessment based on the FE simulation. The study gives a new insight into helmet protection capability under oblique loading and shows that adequate protection is offered by most of the helmets when impacts leading to rotation around X and Y are concerned. However when impact leads to rotation around Z axis the protection is critical for nearly all helmets. The study considers two separate brain FE models for the assessment of brain injury risk and thus permits a comparative analysis of brain FE modeling. When impact induces rotation around X and Y axis the computed results are comparable. However when rotation around Z axis are concerned significant differences are observed which demonstrate that further efforts are needed in the domain of model based brain injury criteria harmonization. 

Place, publisher, year, edition, pages
International Research Council on the Biomechanics of Injury , 2017. p. 190-200
Keywords [en]
Bicycle helmets, Head injury criteria, Oblique impact brain FEM, Test method, Bicycles, Finite element method, Numerical methods, Risk assessment, Rotation, Safety devices, Separation, Acceleration curve, Bicycle helmet, Comparative analysis, Head injury criterion, Initial conditions, Oblique impact, Protection capabilities, Accident prevention
National Category
Other Medical Engineering
Identifiers
URN: urn:nbn:se:kth:diva-246941Scopus ID: 2-s2.0-85057593803OAI: oai:DiVA.org:kth-246941DiVA, id: diva2:1327335
Conference
2017 International Research Council on the Biomechanics of Injury Conference, IRCOBI 2017, 13 September 2017 through 15 September 2017
Note

QC 20190619

Available from: 2019-06-19 Created: 2019-06-19 Last updated: 2019-06-19Bibliographically approved

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Halldin, Peter

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CiteExportLink to record
Permanent link

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Cite
Citation style
  • apa
  • harvard1
  • ieee
  • modern-language-association-8th-edition
  • vancouver
  • Other style
More styles
Language
  • de-DE
  • en-GB
  • en-US
  • fi-FI
  • nn-NO
  • nn-NB
  • sv-SE
  • Other locale
More languages
Output format
  • html
  • text
  • asciidoc
  • rtf