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EP1080337B1 - Blindage composite - Google Patents

Blindage composite Download PDF

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Publication number
EP1080337B1
EP1080337B1 EP99921114A EP99921114A EP1080337B1 EP 1080337 B1 EP1080337 B1 EP 1080337B1 EP 99921114 A EP99921114 A EP 99921114A EP 99921114 A EP99921114 A EP 99921114A EP 1080337 B1 EP1080337 B1 EP 1080337B1
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EP
European Patent Office
Prior art keywords
pellets
plate
armor
layer
panel
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EP99921114A
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German (de)
English (en)
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EP1080337A1 (fr
EP1080337B2 (fr
Inventor
Michael Cohen
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COHEN, MICHAEL
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Individual
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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F41—WEAPONS
    • F41H—ARMOUR; ARMOURED TURRETS; ARMOURED OR ARMED VEHICLES; MEANS OF ATTACK OR DEFENCE, e.g. CAMOUFLAGE, IN GENERAL
    • F41H5/00—Armour; Armour plates
    • F41H5/02—Plate construction
    • F41H5/04—Plate construction composed of more than one layer
    • F41H5/0414—Layered armour containing ceramic material
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F41—WEAPONS
    • F41H—ARMOUR; ARMOURED TURRETS; ARMOURED OR ARMED VEHICLES; MEANS OF ATTACK OR DEFENCE, e.g. CAMOUFLAGE, IN GENERAL
    • F41H5/00—Armour; Armour plates
    • F41H5/02—Plate construction
    • F41H5/04—Plate construction composed of more than one layer
    • F41H5/0492—Layered armour containing hard elements, e.g. plates, spheres, rods, separated from each other, the elements being connected to a further flexible layer or being embedded in a plastics or an elastomer matrix

Definitions

  • the present invention relates to composite armor plates and panels. More particularly, the invention relates to an armored plate which may be worn to provide the user with lightweight ballistic protection, as well as to armored plates for providing ballistic protection for light and heavy mobile equipment and vehicles against high-speed projectiles or fragments.
  • a composite armor plate for absorbing and dissipating kinetic energy from high velocity, armor-piercing projectiles, said plate comprising a single internal layer of high density ceramic pellets which are directly bound and retained in plate form by a solidified material such that the pellets are bound in a plurality of superposed rows, characterized in that the pellets have an Al 2 0 3 content of at least 85%, preferably at least 93%, and a specific gravity of at least 2.5, the majority of the pellets each have at least one axis in the range of about 3-12 mm, and are bound by said solidified material in a single internal layer of superposed rows, wherein a majority of each of said pellets is in direct contact with at least 4 adjacent pellets, the total weight of said plate does not exceed 45 kg/m 2 and said solidified material and said plate are elastic.
  • a composite armor plate for absorbing and dissipating kinetic energy from high velocity, armor-piercing projectiles, said plate comprising a single internal layer of high density ceramic pellets which are directly bound and retained in plate form by a solidified material such that the pellets are bound in a plurality of adjacent rows, characterized in that the pellets have an Al 2 0 3 content of at least 93% and a specific gravity of at least 2.5, the majority of the pellets each have at least one axis of at least 12 mm length and are bound by said solidified material in a single internal layer of adjacent rows, wherein a majority of each of said pellets is in direct contact with at least 4 adjacent pellets, and said solidified material and said plate are elastic.
  • a ceramic body for deployment in a composite armor panel said body being substantially cylindrical in shape, with at least one convexly curved end face, wherein the ratio DIR between the diameter D of said cylindrical body and the radius R of curvature of said at least one convexly curved end face is at least 0.64:1.
  • the first consideration is weight.
  • Protective armor for heavy but mobile military equipment such as tanks and large ships, is known.
  • Such armor usually comprises a thick layer of alloy steel, which is intended to provide protection against heavy and explosive projectiles.
  • reduction of weight of armor, even in heavy equipment is an advantage since it reduces the strain on all the components of the vehicle.
  • such armor is quite unsuitable for light vehicles such as automobiles, jeeps, light boats, or aircraft, whose performance is compromised by steel panels having a thickness of more than a few millimeters, since each millimeter of steel adds a weight factor of 7.8 kg/m 2 .
  • Armor for light vehicles is expected to prevent penetration of bullets of any type, even when impacting at a speed in the range of 700 to 1000 meters per second.
  • Due to weight constraints it is difficult to protect light vehicles from high caliber armor-piercing projectiles, e.g. of 12.7 and 14.5 mm, since the weight of standard armor to withstand such projectile is such as to impede the mobility and performance of such vehicles.
  • a second consideration is cost. Overly complex armor arrangements, particularly those depending entirely on synthetic fibers, can be responsible for a notable proportion of the total vehicle cost, and can make its manufacture non-profitable.
  • a third consideration in armor design is compactness.
  • a thick armor panel including air spaces between its various layers, increases the target profile of the vehicle.
  • a fourth consideration relates to ceramic plates used for personal and light vehicle armor, which plates have been found to be vulnerable to damage from mechanical impacts caused by rocks, falls, etc.
  • Ceramic materials are nonmetallic, inorganic solids having a crystalline or glassy structure, and have many useful physical properties, including resistance to heat, abrasion and compression, high rigidity, low weight in comparison with steel, and outstanding chemical stability. Such properties have long drawn the attention of armor designers, and solid ceramic plates, in thicknesses ranging from 7 mm. for personal protection to 30 mm. for heavy military vehicles, are commercially available for such use.
  • a common problem with prior art ceramic armor concerns damage inflicted on the armor structure by a first projectile, whether stopped or penetrating. Such damage weakens the armor panel, and so allows penetration of a following projectile, impacting within a few centimeters of the first.
  • the present invention is therefore intended to obviate the disadvantages of prior art ceramic armor, and in a first embodiment to provide an armor plate which is effective against small-caliber fire-arm projectiles, yet is of light weight, i.e, having a weight of less than 45 kg/m 2 (which is equivalent to about 9 lbs/ft 2 ) and low bulk.
  • the present invention provides an armor plate which is effective against a full range of armor-piercing projectiles from 5.56 mm and even up to 30 mm, as well as from normal small-caliber fire-arm projectiles, yet is of light weight, i.e., having a weight of less than 185 kg/m 2 , even for the heavier armor provided for dealing with 25 and 30 mm projectiles.
  • a further object of the invention is to provide an armor plate or panel which is particularly effective in arresting a plurality of armor-piercing projectiles impacting upon the same general area of the panel.
  • the armor plates described in US Patent 5,763,813 and European application 98301769.0 are made using ceramic pellets made substantially entirely of aluminum oxide.
  • the ceramic bodies are of substantially cylindrical shape having at least one convexly-curved end-face, and are preferably made of aluminium oxide.
  • the improved properties of the plates described in the above patent applications is as much a function of the configuration of the pellets, which are of regular geometric form (for example, the pellets may be spherical or ovoidal, or of regular geometric cross-section, such as square, hexagonal, octagonal, or circular), said panels and their arrangement as a single internal layer of pellets bound by an elastic solidified material, wherein each of a majority of said pellets is in direct contact with at least four adjacent pellets in the same layer to provide mutual lateral confinement therebetween.
  • composite armor plates superior to those available in the prior art can be manufactured using glass pellets which have a specific gravity of only 2, or pellets made of sintered refractory materials or ceramic materials having a specific gravity equal to or below that of aluminium oxide, e.g., boron carbide with a specific gravity of 2.45, silicon carbide with a specific gravity of 3.2 and silicon aluminum oxynitride with a specific gravity of about 3.2.
  • glass pellets which have a specific gravity of only 2
  • pellets made of sintered refractory materials or ceramic materials having a specific gravity equal to or below that of aluminium oxide e.g., boron carbide with a specific gravity of 2.45, silicon carbide with a specific gravity of 3.2 and silicon aluminum oxynitride with a specific gravity of about 3.2.
  • sintered oxides, nitrides, carbides and borides of magnesium, zirconium, tungsten, molybdenum, titanium and silica can be used and especially preferred for use in the present invention are pellets selected from the group consisting of glass, boron carbide, titanium diboride, silicon carbide, magnesium oxide, silicon aluminum oxynitride in both its alpha and beta forms and mixtures thereof.
  • a composite armor plate for absorbing and dissipating kinetic energy from high velocity projectiles; said plate comprising a single internal layer of pellets which are directly bound and retained in plate form by a solidified material such that the pellets are bound in a plurality of adjacent rows; said solidified material and said plate being elastic; the pellets having a specific gravity of at least 2; the majority of the pellets each having at least one axis having a length in the range of from 6 to 19mm and being bound by said solidified material in said single internal layer of adjacent rows such that each of a majority of said pellets is in direct contact with six adjacent pellets in the same layer to provide mutual lateral confinement therebetween; said pellets each having a major axis and a substantially regular geometric form with at least one convexly-curved end face; wherein said pellets are arranged with their major axes substantially parallel to each other and oriented substantially perpendicularly relative to an outer impact-receiving major surface of said
  • a composite armor plate for absorbing and dissipating kinetic energy from high velocity projectiles; said plate comprising a single internal layer of pellets which are directly bound and retained in plate form by a solidified material such that the pellets are bound in a plurality of adjacent rows; said solidified material and said plate being elastic; the pellets having a specific gravity of at least 2; the majority of the pellets each having at least one axis having a length in the range of from 20 to 75mm and being bound by said solidified material in said single internal layer of adjacent rows such that each of a majority of said pellets is in direct contact with six adjacent pellets in the same layer to provide mutual lateral confinement therebetween; said pellets each having a major axis and a substantially regular geometric form with at least one convexly-curved end face; wherein said pellets are arranged with their major axes substantially parallel to each other and oriented substantially perpendicularly relative to an outer impact-receiving major surface of said
  • a ceramic body for deployment in a composite armor panel said body being substantially cylindrical in shape, with at least one convexly-curved end face, wherein the ratio D/R between the diameter D of said cylindrical body and the radius R of curvature of said at least one convexly curved end face is at least 0.64:1 however, as noted, the entire thrust of said specification is the use of cylindrical pellets having a specific diameter to radius ratio.
  • the solidified material can be any suitable material which retains elasticity upon hardening at the thickness used, such as aluminium, epoxy, a thermoplastic polymer such as polycarbonate, or a thermoset plastic, thereby allowing curvature of the plate without cracking to match curved surfaces to be protected, including body surfaces, as well as elastic reaction of the plate to incoming projectiles to allow increased contact force between adjacent pellets at the point of impact.
  • suitable material which retains elasticity upon hardening at the thickness used, such as aluminium, epoxy, a thermoplastic polymer such as polycarbonate, or a thermoset plastic, thereby allowing curvature of the plate without cracking to match curved surfaces to be protected, including body surfaces, as well as elastic reaction of the plate to incoming projectiles to allow increased contact force between adjacent pellets at the point of impact.
  • the elasticity of the material used in preferred embodiments of the present invention serves, to a certain extent, to increase the probability that a projectile will simultaneously impact several pellets, thereby increasing the efficiency of the stopping power of the plate of the present invention.
  • a multi-layered armor panel comprising an outer, impact-receiving layer formed by a composite armor plate according to the first or second aspect of the invention, for deforming and shattering an impacting high velocity projectile; and an inner layer adjacent to said outer layer, comprising an elastic material for absorbing the remaining kinetic energy from said fragments of said projectile.
  • a multi-layered armor panel comprising an outer, impact-receiving layer formed by a composite armor plate according to the first and second aspect of the invention, for deforming and shattering an impacting high velocity projectile; and an inner layer adjacent to said outer layer, said inner layer comprising a tough woven textile material for causing an asymmetric deformation of the remaining fragments of said projectile and for absorbing the remaining kinetic energy from said fragments, wherein said multi-layered panel is capable of stopping three projectiles fired sequentially at a triangular area of said multi-layered panel, wherein the height of said triangle is substantially equal to three times the length of the axis of said pellets.
  • composite armor plate comprising a mass of spherical ceramic balls distributed in an aluminium alloy matrix is known in the prior art.
  • prior art composite armor plate suffers from one or more serious disadvantages, making it difficult to manufacture and less than entirely suitable for the purpose of defeating metal projectiles.
  • the ceramic balls are coated with a binder material containing ceramic particles, the coating having a thickness of between 0.76 and 1.5 and being provided to help protect the ceramic cores from damage due to thermal shock when pouring the molten matrix material during manufacture of the plate.
  • the coating serves to separate the harder ceramic cores of the balls from each other, and will act to dampen the moment of energy which is transferred and hence shared between the balls in response to an impact from a bullet or other projectile. Because of this and also because the material of the coating is inherently less hard than that of the ceramic cores, the stopping power of a plate constructed as described in said patent is not as good, weight for weight, as that of a plate in accordance with the present invention, in which each of the pellets is in direct contact with at least four and preferably six adjacent pellets.
  • U.S. Patent 3,705,558 discloses a lightweight armor plate comprising a layer of ceramic balls.
  • the ceramic balls are in contact with each other and leave small gaps for entry of molten metal.
  • the ceramic balls are encased in a stainless steel wire screen; and in another embodiment, the composite armor is manufactured by adhering nickel-coated alumina spheres to an aluminium alloy plate by means of a polysulfide adhesive.
  • a composite armor plate as described in this patent is difficult to manufacture because the ceramic spheres may be damaged by thermal shock arising from molten metal contact. The ceramic spheres are also sometimes displaced during casting of molten metal into interstices between the spheres.
  • U.S. Patents 4,534,266 and 4,945,814 propose a network of interlinked metal shells to encase ceramic inserts during casting of molten metal. After the metal solidifies, the metal shells are incorporated into the composite armor. It has been determined, however, that such a network of interlinked metal shells substantially increases the overall weight of the armored panel and decreases the stopping power thereof.
  • U.S. Patent 3,705,558 suggests and teaches an array of ceramic balls disposed in contacting pyramidal relationship, which arrangement also substantially increases the overall weight of the armored panel and decreases the stopping power thereof, due to a billiard-like effect upon impact.
  • the novel armor of the present invention traps incoming projectiles between several pellets which are held in a single layer in mutual abutting and laterally-confining relationship.
  • the relatively moderate size of the pellets ensures that the damage caused by a first projectile is localized and does not spread to adjoining areas, as in the case of ceramic plates.
  • a major advantage of the novel approach provided by the present invention is that it enables the fabrication of different plates and panels adapted to deal with different challenges, wherein e.g. smaller glass, sintered refractory or ceramic pellets can be used for personal armor and for meeting the challenge of 5.56, 7.62 and 9 mm projectiles, while larger ceramic pellets can be used to deal with foreseen challenges presented by 14.5 mm, 25 mm and even 30 mm armor piercing projectiles.
  • spherical glass pellets having a diameter of 10 mm were more than adequate to deal with mufti-impacts of soft metal component 5.56 and 7.62 mm projectiles.
  • An incoming projectile may contact the pellet array in one of three ways:
  • An additional preferred embodiment according to the present invention is one wherein the ceramic material is SiAION in its alpha structure of Si 6-z Al z O z N 8-z , in which "z" is a substitution coefficient of Al and O in the Si 3 N 4 and the "beta structure" of the formula Me m/val Si 12-(m+n) Al m+n O n N 16-n , wherein Me is a metal such as Li, Mg, Ca, Y, and lanthanide's, m and n are substitution coefficients and val is the valency of the metal.
  • FIG. 1 is a cross-sectional side view of a first preferred embodiment of a two-layered armor panel according to the invention.
  • a composite armor plate 10 for absorbing and dissipating kinetic energy from fire-arm projectiles 12 said plate comprising a single internal layer of spherical glass pellets 14, said pellets being arranged in a single layer of adjacent rows, wherein each of a majority of said pellets is in direct contact with at least 4 adjacent pellets.
  • the entire array of pellets is bound in said single layer of a plurality of adjacent rows by solidified epoxy 16 and said plate 10 is further provided with an inner backing layer 18 made of DYNEEMA® or of similar material, to form a multi-layered armored panel 20.
  • the nature of the solidified material 16 is selected in accordance with the weight, performance and cost considerations applicable to the intended use of the armor.
  • Armor for land and sea vehicles is suitably made using a metal casting alloy containing at least 80% aluminium.
  • a suitable alloy is Aluminium Association No. 535.0, which combines a high tensile strength of 35,000 kg/in 2 with excellent ductility, having 9% elongation.
  • Further suitable alloys are of the type containing 5% silicon B443.0. These alloys are easy to cast in thin sections; their poor machinability is of little concern in the application of the present invention.
  • An epoxy or other plastic or polymeric material, advantageously fiber-reinforced, is also suitable.
  • Tables 1 and 2 are reproductions of test reports relating to epoxy-bound multi-layer panels as described above with reference to Fig. 1 .
  • Each of the panels had dimensions of 14" x 14" and had a backing layer 18 made of DYNEEMA® 10 mm thick..
  • the first panel was impacted by a series of three soft-nosed component 7.62 mm projectiles fired at 0° elevation and at a distance of 50 ft. from the target.
  • the second panel was impacted by a series of six soft-nosed component 5.56 mm projectiles, also fired at 0 elevation and at a distance of 50 ft. from the target.
  • spherical glass pellets when arranged in a single layer according to the present invention, enable the preparation of a composite armor plate which can withstand multiple impacts in a relatively small area, which multi-impact protection was not available with prior art acre of comparable weight
  • SiAlON is lighter in weight than aluminum oxide and has a surprisingly greater shattering strength, it is ideally suited for use in the composite armor plates of the present invention.

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Ceramic Engineering (AREA)
  • Aiming, Guidance, Guns With A Light Source, Armor, Camouflage, And Targets (AREA)
  • Casings For Electric Apparatus (AREA)
  • Glass Compositions (AREA)
  • Braking Arrangements (AREA)

Claims (17)

  1. Plaque de blindage composite (10) destinée à absorber et dissiper l'énergie cinétique de projectiles à grande vitesse : ladite plaque comportant une unique couche interne d'éléments (14) qui sont directement liés et retenus sous forme de plaque par une matière solidifiée (16) de telle sorte que les éléments sont liés en une multiplicité de rangées adjacentes ; ladite matière solidifiée (16) et ladite plaque étant élastiques ; les éléments (14) ayant une densité d'au moins 2 ; la majorité des éléments (14) ayant chacun au moins un axe ayant une longueur dans la plage de 6 à 19 mm et étant liée par ladite matière solidifiée (16) dans ladite couche interne unique de rangées adjacentes de telle sorte que chaque élément d'une majorité desdits éléments (14) est en contact direct avec six éléments (14) adjacents dans la même couche afin d'assurer un confinement latéral mutuel entre eux ; lesdits éléments (14) ayant chacun un grand axe et une forme géométrique sensiblement rectangulaire avec au moins une face d'extrémité courbe de manière convexe ; dans laquelle lesdits éléments (14) sont disposés avec leurs grands axes sensiblement parallèles l'un à l'autre et orientés de manière sensiblement perpendiculaire par rapport à une surface principale extérieure de réception d'impact de ladite plaque ; et dans laquelle le poids de la plaque ne dépasse pas 45 kg/m2 ; caractérisée en ce que lesdits éléments sont fabriqués dans une matière choisie dans le groupe se composant du verre, d'une matière réfractaire frittée, et d'une matière céramique autre que de l'oxyde d'aluminium ; et en ce que chaque élément (14) est autre qu'un corps exclu défini ci-après ; le corps exclu étant cylindrique et ayant au moins une face d'extrémité courbe de manière convexe, le rapport D/R entre le diamètre D dudit corps exclu cylindrique et le rayon R de courbure de ladite au moins une face d'extrémité courbe de manière convexe dudit corps exclu cylindrique étant d'au moins 0,64 : 1.
  2. Plaque de blindage composite (10) destinée à absorber et dissiper l'énergie cinétique de projectiles à grande vitesse : ladite plaque comportant une unique couche interne d'éléments (14) qui sont directement liés et retenus sous forme de plaque par une matière solidifiée (16) de telle sorte que les éléments sont liés en une multiplicité de rangées adjacentes ; ladite matière solidifiée (16) et ladite plaque étant élastiques ; les éléments (14) ayant une densité d'au moins 2 ; la majorité des éléments (14) ayant chacun au moins un axe ayant une longueur dans la plage de 20 à 75 mm et étant liée par ladite matière solidifiée (16) dans ladite couche interne unique de rangées adjacentes de telle sorte que chaque élément d'une majorité desdits éléments (14) est en contact direct avec six éléments (14) adjacents dans la même couche afin d'assurer un confinement latéral mutuel entre eux ; lesdits éléments (14) ayant chacun un grand axe et une forme géométrique sensiblement rectangulaire avec au moins une face d'extrémité courbe de manière convexe ; dans laquelle lesdits éléments (14) sont disposés avec leurs grands axes sensiblement parallèles l'un à l'autre et orientés de manière sensiblement perpendiculaire par rapport à une surface principale extérieure de réception d'impact de ladite plaque ; et dans laquelle le poids de la plaque ne dépasse pas 185 kg/m2 ; caractérisée en ce que lesdits éléments sont fabriqués dans une matière choisie dans le groupe se composant du verre, d'une matière réfractaire frittée, et d'une matière céramique autre que de l'oxyde d'aluminium ; et en ce que chaque élément (14) est autre qu'un corps exclu défini ci-après ; le corps exclu étant cylindrique et ayant au moins une face d'extrémité courbe de manière convexe, le rapport D/R entre le diamètre D dudit corps exclu cylindrique et le rayon R de courbure de ladite au moins une face d'extrémité courbe de manière convexe dudit corps exclu cylindrique étant d'au moins 0,64 : 1.
  3. Plaque de blindage composite (10) selon la revendication 1 ou la revendication 2, dans laquelle lesdits éléments (14) sont sphériques.
  4. Plaque de blindage composite (10) selon la revendication 1 ou la revendication 2 destinée à absorber et dissiper l'énergie cinétique de projectiles de perforation de blindage à grande vitesse, dans laquelle lesdits éléments (14) sont fabriqués dans une matière choisie dans le groupe composé du carbure de bore, du diborure de titane, du carbure de silicium, de l'oxyde de magnésium, de l'oxynitrure de silicium et d'aluminium et de mélanges de ceux-ci.
  5. Plaque de blindage composite (10) selon la revendication 4, lorsque la revendication 4 est rattachée à la revendication 2, dans laquelle la majorité desdits éléments (14) a chacun un grand axe ayant une longueur dans la plage de 20 à 30 mm.
  6. Plaque de blindage composite (10) selon l'une quelconque des revendications précédentes, dans laquelle chaque élément d'une majorité desdits éléments (14) le long d'un bord de la plaque est en contact direct avec quatre éléments adjacents et des éléments internes (14) dans ladite multiplicité de rangées à l'intérieur de ladite plaque sont en contact direct avec six éléments (14) adjacents.
  7. Plaque de blindage composite (10) selon l'une quelconque des revendications précédentes, dans laquelle lesdits éléments (14) ont une dureté d'au moins 9 dans l'échelle de Mohs.
  8. Plaque de blindage composite (10) selon l'une quelconque des revendications précédentes, dans laquelle ladite matière solidifiée (16) est une résine thermoplastique.
  9. Plaque de blindage composite (10) selon la revendication 1 ou la revendication 2, dans laquelle ladite matière solidifiée (16) est de l'époxy.
  10. Plaque de blindage composite (10) selon la revendication 1 ou la revendication 2, dans laquelle lesdits éléments (14) sont fabriqués en oxynitrure de silicium et d'aluminium.
  11. Panneau de blindage multicouche (20), comportant :
    une couche extérieure de réception d'impact formée par une plaque de blindage composite (10) selon l'une quelconque des revendications précédentes, destinée à déformer et disperser un projectile d'impact à grande vitesse ; et
    une couche intérieure (18) adjacente à ladite couche extérieure, comportant une matière élastique destinée à absorber l'énergie cinétique restante de fragments dudit projectile.
  12. Panneau de blindage multicouche (20) selon la revendication 11, dans lequel la matière élastique (18) est une matière textile tissée.
  13. Panneau de blindage multicouche (20), comportant :
    une couche extérieure de réception d'impact formée par une plaque de blindage composite (10) selon l'une quelconque des revendications 1 à 10, destinée à déformer et disperser un projectile d'impact à grande vitesse ; et
    une couche intérieure (18) adjacente à ladite couche extérieure, ladite couche intérieure (18) comportant une matière textile tissée solide destinée à provoquer une déformation asymétrique des fragments restants dudit projectile et destinée à absorber l'énergie cinétique restante desdits fragments,
    ledit panneau multicouche (20) étant capable d'arrêter trois projectiles tirés de manière séquentielle au niveau d'une zone triangulaire dudit panneau multicouche, la hauteur dudit triangle étant sensiblement égale à trois fois la longueur de l'axe desdits éléments.
  14. Panneau de blindage multicouche (20) selon la revendication 13, dans lequel la couche intérieure est fabriquée en Kevlar®.
  15. Panneau de blindage multicouche (20) selon la revendication 13, comportant une couche de support supplémentaire en aluminium.
  16. Panneau de blindage multicouche (20) selon la revendication 13, dans lequel la couche intérieure comporte de multiples couches de filet en polyamide.
  17. Panneau de blindage multicouche (20), comportant :
    une couche extérieure de réception d'impact formée par une plaque de blindage composite (10) selon l'une quelconque des revendications 1 à 10, destinée à déformer et disperser un projectile d'impact à grande vitesse ; et
    une couche intérieure (18) adjacente à ladite couche extérieure, ladite couche intérieure (18) étant fabriquée en Dyneema afin de provoquer une déformation asymétrique des fragments restants dudit projectile et afin d'absorber l'énergie cinétique restante desdits fragments,
    ledit panneau multicouche (20) étant capable d'arrêter trois projectiles tirés de manière séquentielle au niveau d'une zone triangulaire dudit panneau multicouche, la hauteur dudit triangle étant sensiblement égale à trois fois la longueur de l'axe desdits éléments.
EP99921114.7A 1998-05-19 1999-05-16 Blindage composite Expired - Lifetime EP1080337B2 (fr)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
IL12454398A IL124543A (en) 1998-05-19 1998-05-19 Composite armor panel
IL12454398 1998-05-19
PCT/IL1999/000260 WO1999060327A1 (fr) 1998-05-19 1999-05-16 Blindage composite

Publications (3)

Publication Number Publication Date
EP1080337A1 EP1080337A1 (fr) 2001-03-07
EP1080337B1 true EP1080337B1 (fr) 2008-06-25
EP1080337B2 EP1080337B2 (fr) 2015-02-18

Family

ID=11071519

Family Applications (2)

Application Number Title Priority Date Filing Date
EP99303164A Withdrawn EP0959321A1 (fr) 1998-05-19 1999-04-23 Plaque de blindage composite
EP99921114.7A Expired - Lifetime EP1080337B2 (fr) 1998-05-19 1999-05-16 Blindage composite

Family Applications Before (1)

Application Number Title Priority Date Filing Date
EP99303164A Withdrawn EP0959321A1 (fr) 1998-05-19 1999-04-23 Plaque de blindage composite

Country Status (7)

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EP (2) EP0959321A1 (fr)
AT (1) ATE399302T1 (fr)
AU (1) AU3845499A (fr)
CA (1) CA2331529C (fr)
DE (1) DE69938965D1 (fr)
IL (1) IL124543A (fr)
WO (1) WO1999060327A1 (fr)

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IL128441A0 (en) 1999-02-09 2001-01-28 Israel State Ballistic armor panel
IL138897A0 (en) * 2000-10-05 2004-08-31 Cohen Michael Composite armor panel
CA2328285A1 (fr) * 2000-12-15 2002-06-15 Gauthier, Alain Blindage anti projectile a charge creuse
IL157584A (en) 2003-08-26 2008-07-08 Cohen Michael Composite armor plate
IL158237A (en) 2003-10-02 2013-03-24 Cohen Michael Ceramic bodies for armor panel
US7513186B2 (en) 2004-03-11 2009-04-07 Plasan-Kibbutz Sasa Ballistic armor
US8281700B2 (en) 2004-09-08 2012-10-09 Michael Cohen Composite armor plate and ceramic bodies for use therein
US7383762B2 (en) 2005-04-03 2008-06-10 Michael Cohen Ceramic pellets and composite armor panel containing the same
IL170119A (en) 2005-08-04 2010-12-30 Moshe Ravid Multi-functional armor system
DK1916495T3 (en) 2006-10-27 2014-02-24 Tno transparent armor
EP2071272A3 (fr) 2007-12-11 2012-11-21 Michael Cohen Plaque de blindage composite et son procédé d'utilisation
US8438963B2 (en) 2010-09-07 2013-05-14 Michael Cohen High density ceramic bodies and composite armor comprising the same
CN104175657A (zh) * 2014-08-08 2014-12-03 太仓派欧技术咨询服务有限公司 一种梯度过渡B4C-Al2O3陶瓷柱
CN110270686A (zh) * 2018-11-22 2019-09-24 无锡银邦防务科技有限公司 一种钛合金/陶瓷复合材料及制备方法

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Also Published As

Publication number Publication date
WO1999060327A1 (fr) 1999-11-25
IL124543A0 (en) 1998-12-06
ATE399302T1 (de) 2008-07-15
AU3845499A (en) 1999-12-06
EP1080337A1 (fr) 2001-03-07
EP1080337B2 (fr) 2015-02-18
DE69938965D1 (de) 2008-08-07
IL124543A (en) 2001-08-26
CA2331529A1 (fr) 1999-11-25
EP0959321A1 (fr) 1999-11-24
CA2331529C (fr) 2006-01-24

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