Abstract
This paper discusses the general conditions relating to ballistic head protection, analyzing the risks that may occur on contemporary battlefields. A thorough literature review has enabled us to present development trends for helmets used in the largest armies in the world. The authors have focused on impacts to the helmet shell, overloading the entire helmet-protected head–neck system. The main objective of this study is to investigate the protective capability of a helmet shell when subjected to projectile–helmet contact, with contact curvature taken as being an indicator of the impact energy concentration. Blunt head trauma was estimated using backface deformation (BFD). The Wz.93 combat helmet was used for testing. Analytically, dependencies were derived to determine the scope of BFD. A five-parameter model of the helmet piercing process was adopted, thus obtaining the optimal BFD range. Verification of theoretical considerations was carried out on a specially developed research stand. In the ballistic tests, dynamic deflection of the helmet’s body was registered using a speed camera. On the impact testing stand, a fragment of the helmet was pierced, producing results in the low impact velocity range. Data have been presented on the appropriate graph in order to compare them with values specified in the relevant standard and existing literature. Our results correlate well with the norm and literature values.
Highlights
The modern approach to promoting the survival of soldiers on the battlefield involves a series of processes related to the design of appropriate personal protective ballistic shields
The helmet was scanned before tests and after each shot in order to obtain a three-dimensional image of deformations using an Absolute Arm scanner
Polish armed armed forces, forces, itit has has been been concluded concluded that that the the army helmets used for protection purposes in our army are capable of withstanding only the first two helmets used for protection purposes in our army are capable of withstanding only the first two threats(see
Summary
The modern approach to promoting the survival of soldiers on the battlefield involves a series of processes related to the design of appropriate personal protective ballistic shields This must be assessed comprehensively for all scenarios where, on the one hand, a soldier’s body is affected by impact energy and, on the other hand, the energy is absorbed in such a way that it gets distracted by a suitable absorber (a helmet or bulletproof vest, etc.), designed to protect human body surface from exposure to serious blunt injuries caused by the inertia forces of ballistic shields influencing a human body.
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