Optimisation of energy absorbing liner for equestrian helmets Part II: Functionally graded foam liner
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Predicting Motorcycle Helmet Impact Severity from Residual Crush Damage
Motorcycle helmets reduce the frequency and severity of head and brain injuries by attenuating head acceleration and distributing the impact force. This is achieved primarily through permanent crushing of the interior energy absorbing liner. Our goal is to characterize the relationship between residual helmet damage and impact energy. Working toward this goal, the current study measures the cha...
متن کاملEvaluation of the Performance of New Laminated Composite Shells for Motorcycle Helmets
Motorcycles are considered a cost-effective and major means of transportation, particularly in the developing countries. However, motorcyclists are at higher risk of head and brain injuries in road crashes, which is the primarily cause of most of the fatalities occurred. Wearing a protective helmet is an efficient way for the safety of the motorcyclist, since it reduces the severity of head inj...
متن کاملStudy of Possible Use of Strain-rate Dependent Materials in Protective Helmets
The probability of brain injury during an accident is dependent on the force history acting on brain tissue. The mostly used criterion for the injury probability assessment, the Head Injury Criterion (HIC), is based on the time integral of force (acceleration) history curve. HIC is used in the work for the assessment of helmet performance. Because of limited weight of the helmet, current design...
متن کاملAnalysis of post-crash motorcycle helmet components in Klang Valley, Malaysia
The aim of this study was to investigate the association between helmet component characteristics with frequency and distribution of head and brain injury (diffuse and focal) among motorcyclists in Klang Valley, Malaysia. In Malaysia, helmet law was implemented in 1973 (MIROS, 2008). To date, high helmet wearing rate was observed among Malaysian motorcyclists (i.e. 90% among riders) (World Heal...
متن کاملA New Oblique Impact Test for Motorcycle Helmets
A new oblique impact test for motorcycle helmets is described, simulating a fall from a motorcycle on to the road surface or the windshield of a car. An instrumented headform falls vertically to impact a horizontally-moving rigid rough or deformable surface. Both the impact site on the helmet, and the vertical and horizontal velocities, can be varied, while linear and rotational accelerations o...
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