scholarly journals Contemporary Personal Ballistic Protection (PBP)

2017 ◽  
Author(s):  
Izabela Luiza Ciesielska-Wróbel
Keyword(s):  
Ballistic Protection

ATI 425

Alloy Digest ◽  
2004 ◽  
Vol 53 (7) ◽  
Keyword(s):  
Fracture Toughness ◽  
Chemical Process ◽  
Aerospace Industry ◽  
Processing Parameters ◽  
Process Industry ◽  
Hot Workability ◽  
Chemical Process Industry ◽  
Armor Plate ◽  
Ballistic Protection ◽  
Hot Rolled

Abstract ATI 425 was originally developed for hot-rolled armor plate to provide ballistic protection comparable to Ti-6Al-4V and has been evaluated against a variety of projectile threats for use as armor. While processing the alloy for armor plate applications, it was observed that the material exhibited very good hot workability, permitting a more lenient window of processing parameters than necessary for Ti-6Al-4V. Versatility then expanded, and applications now exist in the chemical process industry (CPI) and in the aerospace industry. This datasheet provides information on composition, physical properties, and tensile properties as well as fracture toughness and fatigue. It also includes information on corrosion resistance. Filing Code: TI-133. Producer or source: ATI Wah Chang, Allegheny Technologies. Originally published March 2004, revised July 2004.

MARS 300

Alloy Digest ◽  
2013 ◽  
Vol 62 (11) ◽  
Keyword(s):  
Fracture Toughness ◽  
Physical Properties ◽  
Tensile Properties ◽  
High Hardness ◽  
Heat Treating ◽  
Ballistic Protection

Abstract MARS 300 is a super high-hardness (620 HB) steel for ballistic protection. This datasheet provides information on composition, physical properties, hardness, and tensile properties as well as fracture toughness. It also includes information on forming, heat treating, machining, and joining. Filing Code: SA-685. Producer or source: Industeel USA, LLC and Industeel France.

Magnetorheological Damping of Fragment Barrier Suspension Systems

2018 ◽  
Vol 140 (9) ◽  
Author(s):  
Kwon Joong Son ◽  
Eric P. Fahrenthold
Keyword(s):  
Ballistic Performance ◽  
Mr Fluid ◽  
Suspension Systems ◽  
Mr Fluids ◽  
Ballistic Protection ◽  
Protection Systems ◽  
Fluid Damping ◽  
Magnetorheological Damping ◽  
Impact Experiments ◽  
Very High

Magnetorheological (MR) fluids, well established as components of a variety of suspension systems, may offer opportunities to improve the performance of fabric ballistic protection systems, which typically do not incorporate significant energy dissipation mechanisms. A series of ballistic impact experiments has been conducted to investigate the potential of MR fluid damped fabric suspension systems to improve upon current fabric barrier designs. The results indicate that for the simple fabric suspension systems tested, MR fluid damping does not improve upon the very high weight specific ballistic performance of state of the art aramid fibers.

scholarly journals Analytical investigation of high-velocity impact on hybrid unidirectional/woven composite panels

2016 ◽  
Vol 30 (4) ◽  
pp. 545-563 ◽  
Author(s):  
H Shanazari ◽  
GH Liaghat ◽  
H Hadavinia ◽  
A Aboutorabi
Keyword(s):  
Cross Sections ◽  
Shear Failure ◽  
Failure Criteria ◽  
Analytical Investigation ◽  
Woven Fabrics ◽  
Body Armor ◽  
Ballistic Performance ◽  
Nonwoven Fabrics ◽  
Ballistic Protection ◽  
Maximum Tensile Strain

In addition to fiber properties, the fabric structure plays an important role in determining ballistic performance of composite body armor textile. Textile structures used in ballistic protection are woven fabrics, unidirectional (UD) fabric structures, and nonwoven fabrics. In this article, an analytical model based on wave propagation and energy balance between the projectile and the target is developed to analyze hybrid fabric panels for ballistic protection. The hybrid panel consists of two types of structure: woven fabrics as the front layers and UD material as the rear layers. The model considers different cross sections of surface of the target in the woven and UD fabric of the hybrid panel. Also the model takes into account possible shear failure by using shear strength together with maximum tensile strain as the failure criteria. Reflections of deformation waves at interface between the layers and also the crimp of the yarn are modeled in the woven part of the hybrid panel. The results show greater efficiency of woven fibers in front layers (more shear resistance) and UD yarns in the rear layers (more tensile resistance), leading to better ballistic performance. Also modeling the yarn crimp results in more trauma at the backface of the panel producing data closer to the experimental results. It was found that there is an optimum ratio of woven to UD materials in the hybrid ballistic panel.

The development and introduction of ballistic protection of the external genitalia and perineum

2013 ◽  
Vol 159 (suppl 1) ◽  
pp. i15-i17 ◽  
Author(s):  
Eluned A Lewis ◽  
M A Pigott ◽  
A Randall ◽  
A E Hepper
Keyword(s):  
External Genitalia ◽  
Ballistic Protection

scholarly journals Do air-gaps behind soft body armour affect protection?

2017 ◽  
Vol 164 (1) ◽  
pp. 15-18 ◽  
Author(s):  
Lee Tilsley ◽  
D J Carr ◽  
C Lankester ◽  
C Malbon
Keyword(s):  
Ceramic Composite ◽  
Air Gap ◽  
The Body ◽  
Gap Size ◽  
Soft Body ◽  
Air Gaps ◽  
Body Armour ◽  
Ballistic Protection ◽  
Back Face ◽  
Full Metal Jacket

IntroductionBody armour typically comprises a fabric garment covering the torso combined with hard armour (ceramic/composite). Some users wear only soft armour which provides protection from sharp weapons and pistol ammunition. It is usually recommended that body armour is worn against the body with no air-gaps being present between the wearer and the armour. However, air-gaps can occur in certain situations such as females around the breasts, in badly fitting armour and where manufacturers have incorporated an air-gap claiming improvements in thermophysiological burden. The effect of an air-gap on the ballistic protection and the back face signature (BFS) as a result of a non-perforating ballistic impact was determined.MethodsArmour panels representative of typical police armour (400x400 mm) were mounted on calibrated Roma Plastilina No 1 and impacted with 9 mm Luger FMJ (9×19 mm; full metal jacket; Dynamit Nobel DM11A1B2) ammunition at 365±10 m/s with a range of air-gaps (0–15 mm). Whether or not the ammunition perforated the armour was noted, the BFS was measured and the incidence of pencilling (a severe, deep and narrow BFS) was identified.ResultsFor 0° impacts, a critical air-gap size of 10 mm is detrimental to armour performance for the armour/ammunition combination assessed in this work. Specifically, the incidences of pencilling were more common with a 10 mm air-gap and resulted in BFS depth:volume ratios ≥1.0. For impacts at 30° the armour was susceptible to perforation irrespective of air-gap.ConclusionsThis work suggested that an air-gap behind police body armour might result in an increased likelihood of injury. It is recommended that body armour is worn with no air-gap underneath.

Ballistic response of 12.7 mm armour piercing projectile against perforated armour developed from structural steel

2018 ◽  
Vol 233 (10) ◽  
pp. 1993-2005
Author(s):  
A Mubashar ◽  
Emad Uddin ◽  
S Anwar ◽  
N Arif ◽  
S Waheed Ul Haq ◽  
...  
Keyword(s):  
Finite Element Method ◽  
Structural Steel ◽  
Perforated Plate ◽  
High Hardness ◽  
The Core ◽  
Numerical Studies ◽  
Ballistic Protection ◽  
Asymmetric Impact ◽  
Impact Side ◽  
The Impact

This study investigates ballistic response of a developed perforated armour plate against 12.7 mm armour piercing tracer projectile. Experimental as well as numerical studies were carried out and the penetration of the projectile through a base aluminium plate was determined with and without the perforated armour plate. The armour piercing projectiles were able to penetrate the base armour plate in successive impacts. However, the combination of the perforated and base armour plates was able to stop the penetration of the armour piercing projectile. A finite element method-based numerical model was developed to investigate the defeating phenomenon of perforated and base armour plate combination. It was observed that the asymmetric impact of the projectile core did not produce large enough bending to fracture the core. However, the high hardness of the developed perforated plate was able to shatter the projectile core in multiple fragments which were then unable to penetrate the base armour plate. Craters of varying depths were observed on the impact side of the base armour plate. The research showed that the selected structural steel can be successfully used for ballistic protection.

Graphene-Based Nanocomposites with Improved Mechanical and Ballistic Protection Properties

2020 ◽  
pp. 45-54
Author(s):  
Israel Gago ◽  
Manuel del Río ◽  
Julián Carretero ◽  
Gerardo León ◽  
Isidro Ibarra ◽  
...  
Keyword(s):  
Ballistic Protection
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