FR2576550A1 - Composite shielding against high kinetic-energy projectiles and against fire - Google Patents

Composite shielding against high kinetic-energy projectiles and against fire Download PDF

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Publication number
FR2576550A1
FR2576550A1 FR8501334A FR8501334A FR2576550A1 FR 2576550 A1 FR2576550 A1 FR 2576550A1 FR 8501334 A FR8501334 A FR 8501334A FR 8501334 A FR8501334 A FR 8501334A FR 2576550 A1 FR2576550 A1 FR 2576550A1
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France
Prior art keywords
elements
protection according
support
protection
binding agent
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Granted
Application number
FR8501334A
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French (fr)
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FR2576550B1 (en
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PINSON JOSETTE
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PINSON JOSETTE
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Publication date
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Priority to FR8501334A priority Critical patent/FR2576550B1/en
Publication of FR2576550A1 publication Critical patent/FR2576550A1/en
Application granted granted Critical
Publication of FR2576550B1 publication Critical patent/FR2576550B1/en
Expired legal-status Critical Current

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Classifications

    • 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
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B7/00—Layered products characterised by the relation between layers; Layered products characterised by the relative orientation of features between layers, or by the relative values of a measurable parameter between layers, i.e. products comprising layers having different physical, chemical or physicochemical properties; Layered products characterised by the interconnection of layers
    • B32B7/02—Physical, chemical or physicochemical properties
    • B32B7/022—Mechanical properties
    • 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
    • F41H5/0428—Ceramic layers in combination with additional layers made of fibres, fabrics or plastics
    • 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
    • F41H5/0442—Layered armour containing metal
    • F41H5/0457—Metal layers in combination with additional layers made of fibres, fabrics or plastics
    • 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
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2307/00—Properties of the layers or laminate
    • B32B2307/30—Properties of the layers or laminate having particular thermal properties
    • B32B2307/306—Resistant to heat
    • B32B2307/3065—Flame resistant or retardant, fire resistant or retardant
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2307/00—Properties of the layers or laminate
    • B32B2307/70—Other properties
    • B32B2307/718—Weight, e.g. weight per square meter

Landscapes

  • Engineering & Computer Science (AREA)
  • Ceramic Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Mechanical Engineering (AREA)
  • Aiming, Guidance, Guns With A Light Source, Armor, Camouflage, And Targets (AREA)

Abstract

The invention relates to a lightweight and very rigid structural protection, composed of hard 1, ductile 2 and fibrous 7 elements which are judiciously juxtaposed, against high kinetic-energy projectiles. A covering 9 imparts a fire-break character to this assembly. The connections between the various elements are ensured by high-performance bonding (linking) agents 5. The invention applies especially to the production of shielding for land-based, sea-based or air-based installations.

Description

DESCRIPTION
L'objet du présent document est la description d'une protection structurale composite contre les projectiles à energie cinétique perforants ou non et contre le feu.DESCRIPTION
The purpose of this paper is the description of composite structural protection against penetrating and non-penetrating kinetic energy projectiles and against fire.

La technologie contenue dans cette invention permet d'obtenir des gains de masse de plus de 50 % par rapport aux blindages métaLliques acier ou alliage léger classiques. The technology contained in this invention achieves mass savings of more than 50% over conventional steel or light alloy metal shields.

Cette protection composite suivant les figures 1 et 5 se présente sous la forme de plaques planes ou non, ou sous formes complexes tels que des baquets de sièges par exemple. En effet, ces plaques peuvent être assemblées par divers procédés tels que soudage, boulonnage, encastrement tenon-mortaise...  This composite protection according to Figures 1 and 5 is in the form of flat plates or not, or in complex forms such as bucket seats for example. Indeed, these plates can be assembled by various processes such as welding, bolting, mortise and tenon embedding ...

en prenant soin d'orienter correctement les plans de joint par rapport aux directions principales de l'agression potentielle.taking care to correctly orient the joint planes in relation to the main directions of the potential aggression.

Cette protection se compose sur sa face anterieure, coté agression, d'éléments de grande dureté (1), judicieusement juxtaposes sur une couche, intimement liés à un support cloisonné (2) rigide, homogène ou mixte (figures 1 à 4) de densité inférieure à 2,8 kg/dm3. This protection is composed on its anterior side, side aggression, of elements of great hardness (1), judiciously juxtaposes on a layer, intimately related to a partitioned support (2) rigid, homogeneous or mixed (Figures 1 to 4) density less than 2.8 kg / dm3.

L'épaisseur des cloisons est égale ou inférieure au tiers du dismètre du projectile pour laquelle la protection est prévue. La hauteur des cloisons est égale à ltépaisseur des éléments de grande dureté plus celle du calibrage de l'agent liant (5) ou du matelas fibreux (7). The thickness of the partitions is equal to or less than one-third of the projectile dmeter for which protection is provided. The height of the partitions is equal to the thickness of the elements of high hardness plus that of the calibration of the binding agent (5) or the fibrous mat (7).

Les éléments parallélépipèdiques de grande dureté (1) (D Vickers > 2 1 800 kg/mm ), au module d'élasticité élevé (E > 300 GPa) et de faible taux de porosité < o < Tp ( 30 7. ) sont encastrés et intimement liés aux cloisonnements du support par un agent liant (5). The parallelepipedic elements of great hardness (1) (D Vickers> 2 1 800 kg / mm), the high modulus of elasticity (E> 300 GPa) and low porosity <o <Tp (30 7.) are embedded and intimately related to the partitions of the support by a binding agent (5).

Afin de retarder sa rupture sous impact de projectile, chaque élément de grande dureté est fretté par une mince couche de matière fibreuse (6). In order to delay its rupture under projectile impact, each element of high hardness is shrunk by a thin layer of fibrous material (6).

L'épaisseur de l'agent liant (5) est calibré mécaniquement de O,lmm à 0,3mm par des fils (10) insérés entre (1) et (2) ou un dispositif équivalent (figure 1).The thickness of the binding agent (5) is calibrated mechanically from 0.1 mm to 0.3 mm by wires (10) inserted between (1) and (2) or an equivalent device (FIG. 1).

Le support est en alliage léger homogène (2) ou composé de fibres métalliques ou non (3) inserées dans la masse métallique (figure 2) lors du filage ou coulage. The support is in homogeneous light alloy (2) or composed of metal fibers or not (3) inserted into the metal mass (Figure 2) during spinning or casting.

I1 peut se présenter également sous forme d'un profilé à cellules creuses, d'organisation et de forme quelconque dans lesquelles sont insérés des torons (4) ou nappes de fibres métalliques ou non (figure 3). Les liaisons intimes entre les divers éléments sont assurées par un agent liant adapté. It may also be in the form of a hollow-cell profile, of any shape and form in which are inserted strands (4) or plies of metal fibers or not (FIG. 3). The intimate bonds between the various elements are ensured by a suitable binding agent.

Le support peut également être organisé en couches alternées (figure 4) d'alliage léger et de matière fibreuse métallique ou non. Les liaisons intimes entre ces diverses couches sont assurées par un agent liant adapté ou par système mécaniques. The support can also be organized in alternating layers (FIG. 4) of light alloy and fibrous metal material or not. The intimate bonds between these various layers are provided by a suitable binding agent or mechanical systems.

La face antérieure est recouverte d'une peau (9) limitant la projection d'éclats lors d'impacts et assurant la finition et la fonction pare-feu. The anterior face is covered with a skin (9) limiting the projection of splinters during impacts and ensuring the finish and the firewall function.

Cette peau est obtenue par projection d'un produit et/ou par collage d'un tapis ignifuge préalablement élaboré. This skin is obtained by spraying a product and / or gluing a fireproof carpet previously developed.

Cette protection rigide peut admettre en tout point, la fixation d'équipements, du coté des éléments de grande dureté. Leur serrage, assuré par vis ou boulons, est réalisé sur des dispositifs (8), tels que des douilles d'acier, traversant les éléments de grande dureté (1) et prennant appui d'un coté sur le support (2) et de l'autre sur ltéquipement à fixer (figure 5). This rigid protection can admit at any point, the attachment of equipment, the side of the elements of great hardness. Their tightening, ensured by screws or bolts, is performed on devices (8), such as steel sleeves, passing through the elements of great hardness (1) and supported on one side on the support (2) and the other on the equipment to be fixed (Figure 5).

Cette disposition permet de garantir le maintient opérationnel du dit équipement même en cas de destruction locale des éléments (1 > due à un impact rapproché. This arrangement makes it possible to guarantee the operational maintenance of said equipment even in the event of local destruction of the elements (1> due to a close impact.

Cette protection très performante est caractérisée par un coefficient de transmission d'énergie entre les éléments de grande dureté et le support ductile supérieur à 0,79. This high-performance protection is characterized by a coefficient of energy transmission between the elements of high hardness and the ductile support greater than 0.79.

La déformation sous impact ne dépassant pas l'équivalent du- diamètre du projectile considéré, ce type de blindage peut-être utilisé sans inconvé- nient pour réaliser des protections rapprochées (sièges par exemple). Since the deformation under impact does not exceed the equivalent of the diameter of the projectile considered, this type of shielding can be used without inconvenience to achieve close protections (seats for example).

Cette protection structurale légère est capable de supporter des facteurs de charges statiques ou dynamiques exceptionnels en dépit des dommages causés par d'éventuels projectiles. Cette caractéristique confère à cette protection un caractère structural tout à fait adapté à la réalisation de structures anti-crash, de chassis-carrosserie de véhicules blindés...  This lightweight structural protection is able to withstand exceptional static or dynamic load factors despite damage from possible projectiles. This characteristic gives this protection a structural character quite suitable for the realization of anti-crash structures, chassis-body of armored vehicles ...

Claims (9)

REVENDICATIONS 1) Protection structurale composite contre projectile, caractérisée par des éléments de grande dureté (1) judicieusement juxtaposes sur un support  1) Composite structural protection against projectile, characterized by elements of great hardness (1) judiciously juxtapose on a support 3 très rigide (2), ductile et cloisonné, de densité inférieure à 2,8 kg/dm  3 very rigid (2), ductile and partitioned, of density less than 2.8 kg / dm L'épaisseur des cloisons est égale ou inférieure au tiers du diamètre du projectile pour laquelle la protection est prévue. La hauteur des cloisons est égale à l'épaisseur des éléments de grande dureté plus celle du calibrage de l'agent liant (5) ou du matelas fibreux (7). The thickness of the partitions is equal to or less than one third of the diameter of the projectile for which protection is provided. The height of the partitions is equal to the thickness of the elements of high hardness plus that of the calibration of the binding agent (5) or the fibrous mat (7). 2) Protection suivant la revendication 1 caractérisée par un support en alliage léger homogène (2) ou composé de fibres métalliques ou non (3) inserées dans la masse métallique (figure 2) lors du filage ou coulage. 2) Protection according to claim 1 characterized by a homogeneous light alloy support (2) or composed of metal fibers or not (3) inserted into the metal mass (Figure 2) during spinning or casting. 3) Protection suivant la revendication 1 caractérisée par un support filé à cellules creuses,d'organisation et de forme quelconque dans lesquelles sont insérés des torons (4) ou nappes de fibres métalliques ou non (figure3).  3) Protection according to claim 1 characterized by a spun support hollow cells, organization and any shape in which are inserted strands (4) or sheets of metal fibers or not (Figure 3). 4) Protection suivant la revendication 1 caractérisée par un support organisé-en couches alternées (figure 4) d'alliage léger et de matière fibreuse métallique ou non. 4) Protection according to claim 1 characterized by an organized support-in alternating layers (Figure 4) of light alloy and fibrous material metal or not. 5) Protection suivant la revendication 1-caractérisée par des élé  5) Protection according to claim 1 - characterized by elé kg/mm2 ments parallélépipèdiques de grande dureté (1) (D Vickers > 1 800 kg/mm2), au module d'élasticité élevé (E > 300 GPa) et de faible taux de porosité (O < Tp kg / mm2 parallelepipedic elements of great hardness (1) (D Vickers> 1,800 kg / mm2), high modulus of elasticity (E> 300 GPa) and low porosity (O <Tp < 30 %) encastrés et intimement liés aux cloisonnements du support par un agent liant (5).  <30%) embedded and closely related to the partitions of the support by a binding agent (5). 6) Protection suivant les revendications 1 et 5 caractérisée en ce que les éléments de grande dureté (1) sont frettés individuellement par une mince couche de matière fibreuse (6). 6) Protection according to claims 1 and 5 characterized in that the elements of high hardness (1) are shrunk individually by a thin layer of fibrous material (6). 7) Protection suivant l'une quelconque des revendications 1 à 6 caractérisée en ce que l'épaisseur de l'agent liant (5) est calibrée mécaniquement de 0,1 mm à 0,3 mm  7) Protection according to any one of claims 1 to 6 characterized in that the thickness of the binding agent (5) is mechanically calibrated from 0.1 mm to 0.3 mm 8) Protection suivant la revendication 1 caractérisée en ce que toute fixation d'élément, coté agression, comporte des dispositifs traversant (8) les éléments de grande dureté, s'appuyant d'un coté sur le support (2) et de l'autre sur l'équipement à fixer. 8) Protection according to claim 1 characterized in that any element fixation, aggression side, comprises traversing devices (8) the elements of great hardness, based on one side on the support (2) and the other on the equipment to fix. 9) Protection suivant la revendication 1 caractérisée en ce que la peau (9) recouvrant les éléments de grande dureté (1) assure une protection contre le feu. Cette peau est déposée par projection de produit ou par collage d'un tapis ignifuge préalablement élaboré.  9) Protection according to claim 1 characterized in that the skin (9) covering the elements of high hardness (1) provides protection against fire. This skin is deposited by spraying product or by gluing a fireproof mat previously developed.
FR8501334A 1985-01-25 1985-01-25 COMPOSITE SHIELDING AGAINST KINETIC ENERGY PROJECTILES AND FIRE Expired FR2576550B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
FR8501334A FR2576550B1 (en) 1985-01-25 1985-01-25 COMPOSITE SHIELDING AGAINST KINETIC ENERGY PROJECTILES AND FIRE

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Application Number Priority Date Filing Date Title
FR8501334A FR2576550B1 (en) 1985-01-25 1985-01-25 COMPOSITE SHIELDING AGAINST KINETIC ENERGY PROJECTILES AND FIRE

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FR2576550A1 true FR2576550A1 (en) 1986-08-01
FR2576550B1 FR2576550B1 (en) 1987-10-09

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Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR387419A (en) * 1907-03-15 1908-07-09 Wagenfuehr Shield plate
FR1566448A (en) * 1967-03-01 1969-05-09
US3444033A (en) * 1964-06-22 1969-05-13 Aerojet General Co Lightweight armor with laminated base member resistant to delamination
US3671394A (en) * 1969-12-29 1972-06-20 North American Rockwell Articulated fuel element housing
US3826172A (en) * 1969-07-28 1974-07-30 Us Navy Metal, matrix-fiber composite armor
US3874855A (en) * 1969-07-22 1975-04-01 Cegedur Gp Composite shock resisting bodies
FR2405455A1 (en) * 1977-10-06 1979-05-04 Wahl Verschleiss Tech ELEMENT IN PARTICULAR PLATE FORM, RESISTANT TO BOMBARDING
FR2447272A1 (en) * 1979-01-23 1980-08-22 Brinks France Sa Vehicle armour panes of laminated metal GRP sheets - pref. lined with layers of aramide fabrics

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR387419A (en) * 1907-03-15 1908-07-09 Wagenfuehr Shield plate
US3444033A (en) * 1964-06-22 1969-05-13 Aerojet General Co Lightweight armor with laminated base member resistant to delamination
FR1566448A (en) * 1967-03-01 1969-05-09
US3874855A (en) * 1969-07-22 1975-04-01 Cegedur Gp Composite shock resisting bodies
US3826172A (en) * 1969-07-28 1974-07-30 Us Navy Metal, matrix-fiber composite armor
US3671394A (en) * 1969-12-29 1972-06-20 North American Rockwell Articulated fuel element housing
FR2405455A1 (en) * 1977-10-06 1979-05-04 Wahl Verschleiss Tech ELEMENT IN PARTICULAR PLATE FORM, RESISTANT TO BOMBARDING
FR2447272A1 (en) * 1979-01-23 1980-08-22 Brinks France Sa Vehicle armour panes of laminated metal GRP sheets - pref. lined with layers of aramide fabrics

Non-Patent Citations (2)

* Cited by examiner, † Cited by third party
Title
R.C.LAIBLE: "BALLISTIC MATERIALS AND PENETRATION MECHANICS", vol. 5, 1980, pages 135-147, Elsevier Scientific Publishing Company, Amsterdam, NL; R.C.LAIBLE: "Ceramic composite armor" *
W.BEITZ et al.: "DUBBEL TASCHENBUCH F]R DEN MASCHINENBAU", 1981, Springer-Verlag, Berlin, DE; *

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