Increasing the Safety of the Modern Bicycle Helmet

Increasing the Safety of the Modern Bicycle Helmet: Design of an Additional Impact Protection Mechanism

Marcus, Tijs

Jansen, Arjen (mentor)
Ruiter, Iemkje (graduation committee)

Delft University of Technology

IPD

Graduation

2018-04-19

Bicycle helmets reduce the chance of certain injuries such as skull fractures according to various research. However, they are not designed to prevent other injuries such as concussions or traumatic brain injury. This is due to test regulations, which only test for high speed linear accelerations. In reality however, low speed as well as oblique impacts occur frequently. A design is proposed that adds an extra layer to the inside of the modern helmet. Four zones with impact absorbing cylinders are both able to absorb low speed linear accelerations by compression, as wells as angular accelerations (as a result of oblique impacts) by shearing.

Bicycle helmet
Oblique impact
Angular acceleration
Low speed impact
High speed impact
Linear acceleration

http://resolver.tudelft.nl/uuid:53270d5b-b585-4b5d-8910-03b19435bb7e

Campus only

Student theses

master thesis

© 2018 Tijs Marcus