Effects of Production Parameters and Conditioning upon Ballistic Characteristics of Para Aramid Light Armors

Akdemir, Ahmet; Can, Candan; Şahi̇n, Ömer Sinan

doi:10.1177/0021998308094545

Cited by 10 publications

(4 citation statements)

References 11 publications

(10 reference statements)

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“…Para-aramid fibres are currently the primary ballistic components of both the UK OSPREY 8 body armour vest and the US improved outer tactical vest (IOTV). 15 Although para-aramids continue to be refined in terms of increasing their strength-to-weight ratios and energy absorption capacities, 16 they suffer from several disadvantages such as a significant decrease in tensile strength and ballistic protective properties when exposed to heat or moisture and are susceptible to visible light and ultraviolet radiation (UVR) necessitating a protective carrier. Although this may be mitigated by the use of a cover or treating the fibres (or fabric) with a water-repellent treatment (WRT), the use of a cover will increase mass or potentially modify the ballistic properties.…”

Section: Requirements Of Ballistic Materials For Neck Protection and Potential Objective Methods Of Comparisonmentioning

confidence: 99%

An integrated approach towards future ballistic neck protection materials selection

Breeze

Helliker

Carr

2013

Proc Inst Mech Eng H

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Ballistic protection for the neck has historically taken the form of collars attached to the ballistic vest (removable or fixed), but other approaches, including the development of prototypes incorporating ballistic material into the collar of an under body armour shirt, are now being investigated. Current neck collars incorporate the same ballistic protective fabrics as the soft armour of the remaining vest, reflecting how ballistic protective performance alone has historically been perceived as the most important property for neck protection. However, the neck has fundamental differences from the thorax in terms of anatomical vulnerability, flexibility and equipment integration, necessitating a separate solution from the thorax in terms of optimal materials selection. An integrated approach towards the selection of the most appropriate combination of materials to be used for each of the two potential designs of future neck protection has been developed. This approach requires evaluation of the properties of each potential material in addition to ballistic performance alone, including flexibility, mass, wear resistance and thermal burden. The aim of this article is to provide readers with an overview of this integrated approach towards ballistic materials selection and an update of its current progress in the development of future ballistic neck protection.

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Section: Requirements Of Ballistic Materials For Neck Protection and Potential Objective Methods Of Comparisonmentioning

confidence: 99%

An integrated approach towards future ballistic neck protection materials selection

Breeze

Helliker

Carr

2013

Proc Inst Mech Eng H

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“…56 Akdemir et al examined the effect of production parameters on the terminal ballistic properties of para -aramid composite armor under different conditions. 57 Additionally, Simons et al used finite element analysis modeling to investigate the damage behavior of para -aramid armor under various threats. 58 Clegg et al discussed the damage behavior on the para -aramid armor plate, which consists of 19 plies subjected to threats of 1.1 g weight under ballistic impact.…”

Section: Categoriesmentioning

confidence: 99%

Review of Body Armor Research

Yang

Gong

et al. 2017

aatcc j res

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This paper aims to provide a comprehensive review of body armor research with regards to categories, function, and ballistic performance; demonstrating that the improvement in materials and structures are the two basic factors promoting the technology behind body armor improvements. Additionally, this review also provides a better understanding of body armor, its importance, and the benefits of further developments in this field.

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“…Experimental and numerical studies have been carried out. Fabric-related parameters that have been experimentally investigated in recent decades include the yarn material [1][2][3], weave [3][4][5], areal density [4,6], production and conditioning [7]. Experimental investigations concerning the threat include those on the impact velocity [6,8,9], projectile geometry [9][10][11] or mass [12], and impact angle [12,13].…”

Section: Introductionmentioning

confidence: 99%

Real-time Measurement of Projectile Velocity in a Ballistic Fabric with a High-frequency Doppler Radar

et al. 2020

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Background Because of technical limitations, most experimental studies on the energy-absorbing properties of ballistic fabrics are limited to discrete evaluations based on impact and residual velocities. Consequently, the continuous interaction between a projectile and a target material is still commonly assessed with analytical models or numerical simulations, the validation of which is based on the aforementioned discrete values. Objective The present document aims at describing and validating a new experimental method to make it possible to evaluate the continuous evolution of the projectile velocity during penetration into a fabric material. The method is based on the Doppler effect and a specific and complex nonstationary signal treatment. Methods A high-frequency continuous-wave Doppler radar was adapted to assess the continuous evolution of the velocity of a projectile penetrating a fabric material. Based on two ballistic-grade fabric configurations, a perforating and a nonperforating case were described and evaluated. The instantaneous Doppler frequency was extracted based on the Hilbert-Huang transform. A validation of the proposed method was performed based on high-speed camera images, giving the displacement of the apex of the deformation pyramid of the fabric with time. Additionally, a Weibel® Doppler radar was used to measure the impact velocity. Results Based on instantaneous frequencies deduced from the high-frequency radar signal analysis, Doppler theory and highspeed camera images, velocity-time and displacement-time plots were obtained. Additionally, the evolution of the fabric deformation (pyramid morphology) was recorded from the high-speed camera images. Conclusions Comparisons between the data assessed with the high-frequency Doppler radar and those deduced from the highspeed camera indicated that good agreement exists between the two methods. The new Doppler radar method seems to be a promising complementary tool for measuring the continuous interaction between a projectile and a fabric target material.

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Effects of Production Parameters and Conditioning upon Ballistic Characteristics of Para Aramid Light Armors

Cited by 10 publications

References 11 publications

An integrated approach towards future ballistic neck protection materials selection

An integrated approach towards future ballistic neck protection materials selection

Review of Body Armor Research

Real-time Measurement of Projectile Velocity in a Ballistic Fabric with a High-frequency Doppler Radar

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