Ballistic performance of armour ceramics: Influence of design and structure. Part 1

Medvedovski, Eugene

doi:10.1016/j.ceramint.2010.05.021

Cited by 221 publications

(119 citation statements)

References 9 publications

(18 reference statements)

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“…A typical MAS is basically composed of a front ceramic layer with the main purpose of absorbing most of the projectiles high impact energy. This is accomplished through the projectile rupture and erosion as well as by dynamic fragmentation of the ceramic [1][2][3][4][5] . The front ceramic is followed by a lower density second layer, normally a polymeric material, with the aim of further reducing the remaining impact energy associated with a cloud of fragments generated from the shattering of the ceramic and projectile.…”

Section: Introductionmentioning

confidence: 99%

Ballistic Application of Coir Fiber Reinforced Epoxy Composite in Multilayered Armor

et al. 2017

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Multilayered armor systems (MAS) composed of relatively lighter materials with capacity to provide personal ballistic protection are being extensively investigated and used in armor vests. A typical MAS to stand high impact energy 7.62 mm bullet has a front ceramic followed by an aramid fabric laminate, such as Kevlar™. Since both the army and municipal police personnel might need to wear an armor vest, a large number of vests needs to be supplied. In the case of Kevlar™, one of the most expensive MAS material with an expiration time of 5 years, the possibility of its replacement by an equally ballistic efficient low cost material and more durable could be a relevant economical advantage. Natural fibers composites have recently been investigated as possible alternatives for Kevlar™. In particular, the fiber extracted from the coconut fruit, known as coir fiber, normally disposed as waste, could be a low cost material for this purpose. Therefore, the present work investigated the possibility of using coir fiber mantle, with different volume fraction, reinforcing epoxy composites as MAS second layer. It was found that 30 vol% of coir fiber composite displayed similar ballistic performance as compared to Kevlar™ with substantial economical advantage.

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Section: Introductionmentioning

confidence: 99%

Ballistic Application of Coir Fiber Reinforced Epoxy Composite in Multilayered Armor

et al. 2017

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“…However, polymeric composites reinforced with natural fibers were found to be more interesting alternative, due to their low density and low cost, as well as high tensile and impact strength [7][8][9][10][11] . Among the natural fibers, those fibers extracted from the leaves of the Agave sisalana plant, called sisal, show desirable properties associated with low density (1.26-1.50 g/cm 3 ), high strength (287-913 MPa) and high elastic modulus (9-28 GPa) 16 . The application of sisal fiber epoxy composite has been shown as promising MAS second layer…”

Section: Introductionmentioning

confidence: 99%

“…These systems can be used for ballistic protection in various applications, including an individual personal vest and equipment, like armored vehicles. The MAS provide safety by making use of light and efficient materials disposed in several layers, usually three: a frontal ceramic layer, a high performance fiber fabric or composite second layer, and a ductile metal back layer 3,6 . Currently, natural fiber reinforced composites are being extensively studied as possible MAS second layer in both ballistic [7][8][9][10][11] and non-ballistic 12 applications, due to their good performance associated with other advantages over conventional composites like Kevlar TM , such as being lighter, cheaper and environmentally friendly.…”

Section: Introductionmentioning

confidence: 99%

“…For high impact energy ammunitions, such as 7.62 mm, one single material armor is not efficient enough to either stop the projectile or prevent a lethal trauma to the wearer [1][2] . For this type of ammunition, light and efficient solutions have been developed, in the form of Multilayered Armor Systems (MAS), also called Composite Armor [3][4][5][6] . These systems can be used for ballistic protection in various applications, including an individual personal vest and equipment, like armored vehicles.…”

Section: Introductionmentioning

confidence: 99%

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Ballistic Efficiency of Multilayered Armor Systems with Sisal Fiber Polyester Composites

et al. 2018

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The urban violence and the different types of global armed conflicts demand efficient protective systems against high energy ammunition. Multilayered Armor Systems (MAS) provide efficient protection by making use of lighter and more efficient materials. A typical MAS may be composed of three layers: a front ceramic followed by a composite, backed by a ductile metal. Polymer composites reinforced with natural fibers have proven to be effective second layers, being also lighter, low-cost and environmentally friendly as compared to conventional composites like Kevlar TM . The present work evaluates MAS using as second layer polyester composites reinforced with 10, 20, and 30 vol. % of sisal fibers. Ballistic tests were performed using class III 7.62x51 mm ammunition, based on the NIJ 0101.06 backface signature methodology. Both the 30 vol.% sisal fiber composite and the conventional aramid laminates were equally efficient in terms of MAS second layer. The explanation might be the similar capacity of the different composites to retain the fragments generated by the interaction of the projectile with the front ceramic, independently of the percentage of sisal fibers.

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“…slip casting, pressing or injection molding. According to Medvedovski special and expensive equipment is not needed for their processing [12,[24][25][26]. These materials are characterized by good mechanical properties and a relative low density (3.95 g/cm 3 for the alumina; aluminum density is about 2.7 g/cm 3 ).…”

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confidence: 99%

Development of Materials for Naval, Fluvial and Military Applications

Bustamante

Barrios-Revollo

Valencia

et al. 2018

cienc. tecnol. buques

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A platform to design composite materials of a polymeric matrix, that are specifically for military applications on fluvial and naval navigation, has been developed using energy dissipation and storage mechanisms. Our composites are designed to generate synergy between the dissipation capacities of ceramics and high-performance fibers, which are used as the reinforced material in the lightweight laminates. The composite design is combined with processing tools and advanced characterization techniques that result in laminates with reliability, traceability and quality. The platform begins with the identification of energy dissipation mechanisms and the detailed characterization of the polymeric resin. It includes the Time -Temperature -Transformation Diagram (TTT-Diagram) that supplies the optimal processing conditions. Our designs open new paths for military applications including a wide spectrum of protective systems together with geometric versatility, high mechanical resistance and reliability.Utilizando los múltiples mecanismos de disipación de la energía de impacto a alta velocidad, hemos desarrollado una plataforma de diseño de materiales compuestos de matriz polimérica, especiales para aplicaciones militares en navegación fluvial y marítima. Nuestros compuestos pretenden hacer sinergia entre las capacidades de disipación de cerámicos y fibras de alto desempeño, los cuales son utilizados como los elementos de refuerzo en los laminados de bajo peso. El diseño del material es combinado con herramientas de procesamiento y técnicas avanzadas de caracterización que resultan en laminados consistentes de alta repetibilidad, trazabilidad y alta calidad. La plataforma parte de la identificación de los mecanismos de disipación y de una caracterización detallada de la resina polimérica, el cual incluye un diagrama de Tiempo-Temperatura-Transformación que provee las condiciones óptimas de procesamiento. Nuestros diseños abren rutas novedosas para aplicaciones militares, los cuales incluyen amplios portafolios de protección, versatilidad geométrica, resistencia mecánica y confiabilidad.

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Ballistic performance of armour ceramics: Influence of design and structure. Part 1

Cited by 221 publications

References 9 publications

Ballistic Application of Coir Fiber Reinforced Epoxy Composite in Multilayered Armor

Ballistic Application of Coir Fiber Reinforced Epoxy Composite in Multilayered Armor

Ballistic Efficiency of Multilayered Armor Systems with Sisal Fiber Polyester Composites

Development of Materials for Naval, Fluvial and Military Applications

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