Influence of Geometry and Hardness of the Backing Plate on Ballistic Performance of Bi-Layer Ceramic Armor

Gour, Govind; Serjouei, Ahmad; Sridhar, I

doi:10.1016/j.proeng.2016.12.040

Cited by 15 publications

(6 citation statements)

References 9 publications

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“…The BFS depths of the uniform-layered, gradual-layered, and purematrix samples were similar in the SA test, while these ceramics had different BFS depths in the CA test. Of note is that the ballistic performance was highly related to the testing conditions as well as the armor itself, e.g., the back support [27], the confinement [28], or the pre-stress applied to the armor plate [29,30]. In the CA test, the armor plate was attached to a flexible armor jacket which provided stronger back support than the armor plate for the SA test.…”

Section: Resultsmentioning

confidence: 99%

“…The stress wave generated by the ballistic impact was reflected at the ceramic/backing interface due to the mechanical impedance [2]. A theoretical study by Gour [27] also showed that a thicker back-plate would help to offset the tensile stress at the ceramics and support the ceramic for a longer time, preventing the premature failure of the ceramics. Compared to the laminated SiC ceramics for the CA test, the laminated SiC ceramics in the SA test had a weaker back support, thus they likely failed before the laminated structure could play a role.…”

Section: Resultsmentioning

confidence: 99%

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The Ballistic Performance of Laminated SiC Ceramics for Body Armor and the Effect of Layer Structure on It

et al. 2021

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Laminated ceramics with weak interface layers have been proven to be effective in toughening ceramics. The energy absorption ability of laminated ceramics may also benefit their ballistic performance. However, the effect of the layer structure on the ballistic performance of laminated ceramics has not been studied. Focusing on the application for body armor, this paper studied the effect of the different layer structures on the ballistic performance of laminated SiC ceramics. The laminated SiC ceramics with different layered structures were designed and prepared by tape-casting and hot-pressing. When used for the ‘in conjunction with’ armor system, the laminated SiC ceramics with a gradual-layered structure had the backface signature depth of 30% less than the laminated SiC with no interface structure and 50% less than the commercial solid-state sintered SiC. However, when used stand-alone, the laminated SiC had a similar ballistic performance regardless of the layer structure, which was likely due to the weak back support. In conclusion, the ballistic performance of the laminated ceramics was related to the back support of the armor system. When used for the ‘in conjunction with’ armor system, the laminated SiC had a better ballistic performance than that of the solid-state sintered SiC.

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Section: Resultsmentioning

confidence: 99%

Section: Resultsmentioning

confidence: 99%

The Ballistic Performance of Laminated SiC Ceramics for Body Armor and the Effect of Layer Structure on It

et al. 2021

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“…[1][2][3] In particular, ceramic/ fiber composite armor has been widely used in bulletproof systems. [4][5][6][7][8][9][10] Baha 11 investigated the effect of different fiber composite backplanes on the penetration resistance of ceramic composite armor against 7.62 mm armor-piercing projectiles through numerical simulation. Six kinds of backplane structures with different thickness ratios were designed, namely, aramid fiber laminate, glass fiber laminate, carbon fiber/aramid fiber hybrid laminate, and glass/aramid fiber hybrid laminate.…”

Section: Introductionmentioning

confidence: 99%

Impact resistance performance and structural optimization of lightweight composite target plate

Zhou,

Zheng

2024

Polymer Composites

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The finite element model of a 7.62 mm armor‐piercing incendiary bomb penetrating lightweight composite target is established. The structure of the target plate is composed of boron carbide ceramic/carbon fiber laminate/aramid fiber laminate/damping material. The reasonable distribution position of damping material is explored by designing the material structure and geometric parameters. Genetic algorithm is used to optimize the structure of the lightweight composite target plate, and the feasibility of the optimization results is verified through experiments. The results show that under the same surface density, the energy absorption value of the target plate with a certain thickness of back layer damping is 1.36% higher than that of the target plate without damping. And the damping material on the back layer can act as a buffer layer to reduce blunt trauma caused by bullets to the human body. The surface density of the optimized lightweight composite target plate is reduced by 21.6% under the same protection capability. This work provides a theoretical foundation for the impact resistance design and optimization of lightweight composite target plates.Highlights Impact resistance performance of lightweight composite target plate is investigated. The impacting analytical model of the structure is established. The validity of the optimized impacting analytical model is verified by numerical simulation.

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“…In the development of armour systems, finite element simulations can be very useful to understand the failure mechanisms occurring when the ceramic is shocked and to optimize the design. Several researchers have used finite element simulations to investigate the effect of modifying certain parameters of the ceramic armour on its ballistic performance. Some material parameters have been identified to influence the ballistic performance of the ceramics such as the hardness, elastic modulus, tensile strength, porosity, and density.…”

Section: Introductionmentioning

confidence: 99%

“…Some material parameters have been identified to influence the ballistic performance of the ceramics such as the hardness, elastic modulus, tensile strength, porosity, and density. For example, Cicchetti studied the effect of the different geometries of the seams and corners, Gour et al studied the influence of the thickness of the backing plate, and Weiss et al studied the effect of confinement and of adding a cover plate. It was demonstrated in Wang and Li that the strength of the ceramics increases with the confining pressure.…”

Section: Introductionmentioning

confidence: 99%

Steel spheres impact on alumina ceramic tiles: Experiments and finite element simulations

Toussaint

Polyzois

2019

Int J Applied Ceramic Tech

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Finite element simulations can be very useful for assessing and optimizing the design of advanced armor systems, but they require capturing the mechanisms of damage and failure that occur in composite-backed ceramic tiles when subjected to shock impact. The damage that occurs, primarily by the formation of radial and conical cracks and comminution, is complex. Therefore, the first step toward understanding these mechanisms are to simplify the problem. In this work, impact experiments using spherical steel projectiles were conducted on free-standing bare alumina ceramic tiles of two different thicknesses. Observations of the damage were then used to investigate the ability of numerical codes to capture the damage mechanisms occurring in the alumina tiles at various impact velocities. Three constitutive material models, used to simulate brittle fracture in isotropic solids, were explored, using commercially available finite element hydrocode LS-DYNA. These were the popular Johnson-Holmquist model 2 for ceramic materials, the pseudo-rheological Karagozian & Case Concrete model-Release III, and the elastic bond-based peridynamics model. The numerical results obtained demonstrated the capability of each approach to capture the damage produced by the impact of steel spheres on alumina ceramic tiles.

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Influence of Geometry and Hardness of the Backing Plate on Ballistic Performance of Bi-Layer Ceramic Armor

Cited by 15 publications

References 9 publications

The Ballistic Performance of Laminated SiC Ceramics for Body Armor and the Effect of Layer Structure on It

The Ballistic Performance of Laminated SiC Ceramics for Body Armor and the Effect of Layer Structure on It

Impact resistance performance and structural optimization of lightweight composite target plate

Steel spheres impact on alumina ceramic tiles: Experiments and finite element simulations

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