Hypervelocity penetration of tungsten sinter-alloy rods into aluminum

Hohler, V.; Stilp, A.; Weber, K.

doi:10.1016/0734-743x(95)99866-p

Cited by 35 publications

(25 citation statements)

References 7 publications

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“…more room for the fragments motion is available and thus the penetration resistance decreases [3]. Following these ideas, the expression for fragmented ceramic strength assumed in the model is ( 15) where Upha>et is the penetration velocity at the end of fragmentation stage, when the ceramic strength decrease starts.…”

Section: Field Of I'c/ocitics Ill {Hc ('Erami(' ('Olloid the Velocitmentioning

confidence: 99%

Analytical modelling of normal and oblique ballistic impact on ceramic/metal lightweight armours

Zaera

Sánchez‐Gálvez

1998

International Journal of Impact Engineering

137

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Section: Field Of I'c/ocitics Ill {Hc ('Erami(' ('Olloid the Velocitmentioning

confidence: 99%

Analytical modelling of normal and oblique ballistic impact on ceramic/metal lightweight armours

Zaera

Sánchez‐Gálvez

1998

International Journal of Impact Engineering

137

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“…El test de profundidad de penetración se emplea habitualmente para determinar la eficiencia frente a impacto de materiales cerámicos (15). En él, una loseta del material a evaluar se dispone sobre un bloque metálico de suficiente espesor y el conjunto es impactado por un proyectil.…”

Section: Comportamiento Frente a Impacto De Alta Velocidadunclassified

Fabricación y caracterización mecánica de un material compuesto de matriz polimérica y carga cerámica

Árias¹,

Zaera²,

López-Puente³

2004

Bol. Soc. Esp. Ceram. Vidr.

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En este trabajo se presenta el proceso de fabricación de un material compuesto de matriz polimérica y carga cerámica, su caracterización mecánica estática y su comportamiento frente a impacto. Como matriz se ha empleado una resina viniléster y como carga cerámica se han empleado partículas de alúmina y carburo de silicio. Estas partículas, con un tamaño medio comprendido entre 1.5 mm y 4.5 mm, presentan bajo coste y alta disponibilidad. La compactación uniaxial permitió obtener losetas con un elevado porcentaje de partículas cerámicas (hasta el 80% en peso) y baja porosidad. Se han realizado ensayos de compresión estática sobre el material desarrollado para analizar la influencia de varios factores: fracción volumétrica de partículas, tamaño de partícula, material de las partículas y temperatura. La resistencia a compresión cuasiestática del nuevo material compuesto se incrementa al aumentar la fracción volumétrica de partículas, siendo prácticamente independiente del tamaño de éstas, en el rango granulométrico considerado. El incremento de la temperatura supone una disminución en las propiedades cuasiestáticas. El bajo coste del material desarrollado justifica su aplicación en protecciones que requieran de una eficiencia frente a impacto intermedia entre la correspondiente a placas metálicas y a los paneles cerámica/metal. Palabras clave: Partículas cerámicas, Matriz polimérica, Eficiencia balística, Compresión estática, Ensayo de profundidad de penetración. Manufacturing and compressive behavior of a polymeric material loaded with ceramic particlesA polymeric material loaded with ceramic particles was developed and its static and impact behaviors were determined. A vinylester resin, used as matrix, was reinforced with alumina or silicon carbide particles. These particles, with mean sizes between 1.5 and 4.5 mm, are cheap and readily obtainable. The manufacturing process produced tiles with a high percentage of ceramic particles (up to 80% by weight) and low porosity. The static compressive behavior of the composite was examined to consider various factors: ceramic fraction, particle size, material of particles and temperature. A higher volumetric fraction of particles produces an increase of stiffness and raises the yield stress of the composite; the influence of size of particles is not determinant. High temperatures produces a decrease of the mechanical properties. The efficiency of this low-cost material is halfway between that of the conventional metallic materials and the monolithic ceramic tiles used in lightweight protection. Keywords: Ceramic particles, Polymeric matrix, Ballistic efficiency, Static compression, Depth of penetration test. INTRODUCCIÓNEn el proceso de diseño de protecciones frente a impacto, los requerimientos más importantes son elevada capacidad de detención de la amenaza, baja densidad y reducido coste de los materiales. Se pueden emplear diferentes materiales para satisfacer estos requerimientos. Los materiales metálicos pueden, en general, responder a los requerimientos de protecci...

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“…Composite tiles of three different thicknesses (10, 15 and 20 mm) and two different proportions of grain size intervals (Table 3) Some parameters have been defined to determine the ballistic efficiency of a material [16,17]. One of them is the slope of the curves of non-dimensional residual penetration d=d REF versus areal density of the tile.…”

Section: Dop Tests Of the Composite Tilementioning

confidence: 99%

“…The method adopted to examine the behavior of a material without a backing plate is the depth of penetration (DOP) test [15][16][17] in which the material is backed by a metal block and impacted by a projectile. The residual penetration of the block, d (Fig.…”

Section: Evaluation Of the Ballistic Efficiency Of The Compositementioning

confidence: 99%

Numerical modeling of the impact behavior of new particulate-loaded composite materials

Árias

Zaera

López-Puente

et al. 2003

Composite Structures

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Ballistic efficiency and cost are the main considerations in the design of lightweight armors. Metallic materials have the drawback of their high density. Mixed armors, of ceramic tiles backed by a metallic plate, are an efficient shield against low and medium caliber projectiles since they combine the light weight and high resistance of a ceramic with the ductility of a metal. The drawback is their high cost. The authors developed a new material composed of ceramic particles and a polymeric matrix. It fills the gap between metallic and ceramic materials and could be interesting for applications in which weight is not the primary concern and cost benefits are welcome. A model of the mechanical behavior of this composite is presented in this paper, implemented in a numerical code and validated by experimental results.

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Hypervelocity penetration of tungsten sinter-alloy rods into aluminum

Cited by 35 publications

References 7 publications

Analytical modelling of normal and oblique ballistic impact on ceramic/metal lightweight armours

Analytical modelling of normal and oblique ballistic impact on ceramic/metal lightweight armours

Fabricación y caracterización mecánica de un material compuesto de matriz polimérica y carga cerámica

Numerical modeling of the impact behavior of new particulate-loaded composite materials

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