In this work we present a study of the characterization of an Advanced Combat Helmet (ACH) using experimental modal analysis techniques. A medium-sized helmet was impacted at different location and the vibration response was used to estimate a global frequency model. This was achieved using the modal parameters of the local models obtained for a specific input-output location and combining them in a global model. The estimation of the frequency ...
The Vice Chief of Staff of the Army (VCSA) directed that Soldier combat helmets be fitted with electronic sensor technologies to sense and record helmet response to dynamic events. These events could be exposure to blast events (IEDs), ballistic impacts, and/or blunt impacts. The sensors record orthogonal accelerations and blast overpressure levels. However, since helmets are not rigidly coupled to the head, and are not rigid bodies and often experience ...
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