Cure characteristics, mechanical properties and back face signature of ballistic rubber trauma pack

Mazlan, Mazliah; Mohamad, Noraiham; Razak, Jeefferie Abd; Maulod, Hairul Effendy Ab; Minal, Azmi; Mef, Mohd; Hamdan, at

doi:10.1504/ijnt.2019.107364

Cited by 1 publication

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“…Therefore, it is important to develop ballistic protections having a negligible trauma effect while minimizing the weight of the ballistic protections. 21,22 To this end and after long operational research, it turned out that the available soft armor of the People’s National Army (ANP), currently in use, containing about 26 layers of Kevlar not only to stop projectiles but also to manage to reduce the trauma effect below the threshold of 44 mm dictated by the NIJ standard. Subsequent research on the subject has shown that generally five to eight layers of Kevlar are enough for stopping the projectile without taking into account the trauma effect which is governed by other considerations.…”

Section: Introductionmentioning

confidence: 99%

New strategy for the development of lightweight ballistic armors with limited backface signature

Berrouane

Derradji

Khiari

et al. 2023

High Performance Polymers

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In this study, a new strategy is adopted for the development of advanced, and lightweight ballistic armor. This new generation of ballistic protections is referred to as “hybrid”, in which certain layers of Kevlar have been impregnated with a high-performance green and bisphenol-A free thermosetting resin, namely the vanillin-based benzoxazine (Va-BZ). The role of thermosetting polymer is to slow down and stop the projectile. In addition, the backface signature (BFS) with a minimum number of Kevlar layers is reduced. Indeed, this kind of matrix not only possesses one of the highest crosslinking densities in the field, but also offers excellent mechanical and thermal properties. The adopted experimental approach consists in gradually changing, in increments of 5, the number of impregnated Kevlar layers. The ultimate goal is to reduce the number of Kevlar layers from 26 (currently in use) to 20 while ensuring a BFS of less than 44 mm (as per the requirement of the National Institute of Justice standard NIJ-0101.06). Indeed, the adopted strategy allowed significant reduction in the BFS. For instance, armors made of 20 layers of Kevlar layers in which 10 layers were impregnated by the Va-BZ displayed the minimal BFS value of 36.54 mm. Hence, by introducing the Va-BZ resin, the non-perforated Kevlar fabrics gained enough rigidity to sustain the impact with minimal deformation. Overall, these newly developed armors offer the best BFS possible to protect vital human body parts.

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Section: Introductionmentioning

confidence: 99%