Alumina and low density polyethylene composite for ballistics applications

Oliveira, Marcio Jardim; Gomes, Alaelson Vieira; Pimenta, Alexandre Dias; Figueiredo, André Ben-Hur da Silva

doi:10.1016/j.jmrt.2021.07.069

Cited by 6 publications

(9 citation statements)

References 46 publications

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“…After the bullet hits the samples, it lodges inside the wood plate. Measuring bullet penetration in the wood plate is important to understand how much the composite was able to withstand the ballistic impact [32]. To perform the ballistic tests, 7 samples were used for each group.…”

Section: Ballistic Testsmentioning

confidence: 99%

“…Thus, the authors related the time of use of the lightweight armor with its durability. Oliveira et al [32] investigated the ballistic properties of low-density polyethylene composites (LDPE) reinforced with alumina particles in a concentration ranging from 0 wt% to 100 wt%. The authors observed that fractions of 80 wt% and 85 wt% resulted in the best results of ballistic resistance, in which the penetration of an ammunition caliber .22 LR, was almost null.…”

Section: Ballistic Performancementioning

confidence: 99%

“…One factor that resulted in poor performance in the tensile test was the weak affinity of polymer chains with ceramic particles [43]. The loss of ductility of a composite is a result of the fragility of ceramic materials [32,44,45]. According to Chee et al [36] plastic deformation in the polymer matrix is a predominant mechanism in energy absorption, being reduced with the addition of reinforcement.…”

Section: Mechanical Characterization Of A00 A40 A50 and A60 Compositesmentioning

confidence: 99%

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Mechanical and ballistic characterization of high-density polyethylene composites reinforced with alumina and silicon carbide particles

et al. 2022

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This article explores the ballistic and mechanical performance of HDPE matrix composites reinforced with alumina and silicon carbide particles, to be used as lightweight body armor. After processing, the composites were evaluated by tensile tests, Izod impact, and Shore D hardness. In addition, depth of penetration (DOP) and energy absorption tests were performed with chronograph simulating .22 ammunition in the ballistic test. Samples A80 and A70 had the lowest DOP result (15.98 and 17.98 mm respectively) indicating that these samples had the best ballistic performance. Mechanical tests performed on samples A00, A40, A50, and A60 showed that the deformation and tensile strength were reduced with the addition of ceramic reinforcement. Impact resistance also decreased. Shore D hardness showed a considerable increase in hardness of A40, A50, and A60 compared to A00.

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Section: Ballistic Testsmentioning

confidence: 99%

Section: Ballistic Performancementioning

confidence: 99%

Section: Mechanical Characterization Of A00 A40 A50 and A60 Compositesmentioning

confidence: 99%

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Mechanical and ballistic characterization of high-density polyethylene composites reinforced with alumina and silicon carbide particles

et al. 2022

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“…Different reinforcement method of ceramics is the addition of ultra-high molecular weight polyethylene or low-density polyethylene (LDPE) before sintering by the hot-pressing process to fill possible cavities (pores) formed during sintering. Oliveira et al [48] had examined the ballistic properties of alumina-based composites reinforced by the different mass fractions of low-density polyethylene. In the stated examination, alumina-based composites were modified by 10-30 wt.…”

Section: Ceramics-based Ballistic Protection Compositesmentioning

confidence: 99%

Ballistic Composites, the Present and the Future

Stupar¹

2022

Smart and Advanced Ceramic Materials and Applications

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In recent decades, the expansion of arms development has initiated the need to increase the protection of people and vehicles from pistol and rifle ammunition. Modern ceramic and ceramic-based materials are lightweight and durable and provide a sufficient level of protection against the penetration and impact of ammunition, which can protect the vital organs of the person. Modern tendencies require the addition of armor to vehicles, which reduces the necessity of excessive bulk steel usage and eliminates large and heavy mass weight amounts. By replacing the armored steel with new ballistic materials, a higher level of ballistic protection could be achieved, as well as reduction of weight, which both allows better mobility and increases the ability of installment of additional battle fighting equipment. Modern ceramic materials used in the production of armor are made by sintering the ceramic powder under certain conditions in a suitable molding tool. The chapter will cover the short material requirements, and material responses to ballistic impact, production methods, and applications. Also, the chapter will include the usage of ceramic fibers, alumina, silicon and boron carbide, titanium diboride, and ballistic materials that consist of a ceramic face bonded to a reinforced plastic laminate or metallic backplate.

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“…Ballistics may easily be defined as the impact of a comparatively small object/projectile on a heavy body [ 14 , 15 ]. As ballistic threats are increasing with developments in the arms industry, there is a need for novelty in armor to capture their impact energy, with the least effect on the back facet associated with the human’s chest [ 16 , 17 ].…”

Section: Introductionmentioning

confidence: 99%

Finite Element Analysis of the Ballistic Impact on Auxetic Sandwich Composite Human Body Armor

et al. 2022

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In this study, the ballistic impact behavior of auxetic sandwich composite human body armor was analyzed using finite element analysis. The auxetic core of the armor was composed of discrete re-entrant unit cells. The sandwich armor structure consisted of a front panel of aluminum alloy (Al 7075-T6), UHMWPE (sandwich core), and a back facet of silicon carbide (SiC) bonded together with epoxy resin. Numerical simulations were run on Explicit Dynamics/Autodyne 3-D code. Various projectile velocities with the same boundary conditions were used to predict the auxetic armor response. These results were compared with those of conventional monolithic body armor. The results showed improved indentation resistance with the auxetic armor. Deformation in auxetic armor was observed greater for each of the cases when compared to the monolithic armor, due to higher energy absorption. The elastic energy dissipation results in the lower indentation in an auxetic armor. The armor can be used safely up to 400 m/s; being used at higher velocities significantly reduced the threat level. Conversely, the conventional monolithic modal does not allow the projectile to pass through at a velocity below 300 m/s; however, the back face becomes severely damaged at 200 m/s. At a velocity of 400 m/s, the front facet of auxetic armor was destroyed; however, the back facet was completely safe, while the monolithic panel did not withstand this velocity and was completely damaged. The results are encouraging in terms of resistance offered by the newly adopted auxetic armor compared to conventional monolithic armor.

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Alumina and low density polyethylene composite for ballistics applications

Cited by 6 publications

References 46 publications

Mechanical and ballistic characterization of high-density polyethylene composites reinforced with alumina and silicon carbide particles

Mechanical and ballistic characterization of high-density polyethylene composites reinforced with alumina and silicon carbide particles

Ballistic Composites, the Present and the Future

Finite Element Analysis of the Ballistic Impact on Auxetic Sandwich Composite Human Body Armor

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