WO2010146106A1 - Composant céramique armé - Google Patents

Composant céramique armé Download PDF

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Publication number
WO2010146106A1
WO2010146106A1 PCT/EP2010/058520 EP2010058520W WO2010146106A1 WO 2010146106 A1 WO2010146106 A1 WO 2010146106A1 EP 2010058520 W EP2010058520 W EP 2010058520W WO 2010146106 A1 WO2010146106 A1 WO 2010146106A1
Authority
WO
WIPO (PCT)
Prior art keywords
ceramic
channels
tiles
tiles according
armor
Prior art date
Application number
PCT/EP2010/058520
Other languages
English (en)
Inventor
Loriano Bocini
Francesco Borghini
Riccardo Rovai
Original Assignee
Industrie Bitossi S.P.A.
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Industrie Bitossi S.P.A. filed Critical Industrie Bitossi S.P.A.
Priority to IL210048A priority Critical patent/IL210048A/en
Publication of WO2010146106A1 publication Critical patent/WO2010146106A1/fr

Links

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
    • F41H5/023—Armour plate, or auxiliary armour plate mounted at a distance of the main armour plate, having cavities at its outer impact surface, or holes, for deflecting the projectile
    • 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

Definitions

  • This invention relates to the ceramic armor component field.
  • Ceramic armor is typically used for body armor and for the protection of different types of vehicles, such as various types of land vehicles, ships, and aircraft.
  • a ceramic armor is made of a ceramic tile and composite material as backing.
  • ceramic tiles are adhesively secured to a substrate then encapsulated in an outer cover. These substrate and cover represent the backing composite material.
  • the ceramic armor system is then attached to a vehicle by a variety of means or merely placed in a fabric pocket, as in the case of body armor.
  • the function of the ceramic layer is to break the bullets while the function of the composite backing is to hold the ceramic in places during the impact and to catch the fragments produced during the impact and dissipate their mechanical energy by a plastic deformation.
  • a very important characteristic of ceramic component armors is their ability to defeat multiple shots within a relatively small area.
  • the challenge in developing multi-hit ceramic composite armor is to control the damage of the armor structure after the impact in its proximity.
  • metal armor have inherently this characteristic, that is related to the metal ductility and ability to withstand plastic deformation, in ceramic armor components it must be addressed by an appropriate design of the armor components.
  • the damage produced in ceramic hard face components by projectile impact can be classified into (1 ) a comminution zone of highly pulverized material in the shape of a conoid under the incident projectile footprint, (2) radial and circumferential cracks,
  • FIG. 1 (a - b) schematic representation of a ceramic tile according to this invention and a perpendicular section respectively.
  • FIG. 3 (a - e) different realizations of the invention in which channels are disposed according to various geometries.
  • ceramic tiles for armors according to the invention are standard tiles (10) with channels (1 1 ) joining the opposite surfaces.
  • Tiles can have smooth and continuous borders or they can present (12) cavities represented by part of the channels (1 1 ) (preferably an half of total number as shown in Fig. 1 ).
  • Channels can be simple holes or hollow tubes placed in the body of the tile, constituting an open channel on both opposite surfaces.
  • Channels can have circular or polygonal section (for example, square, hexagonal, triangular, pentagonal) and can be perpendicularly disposed or inclined across the tiles surfaces.
  • channels internal dimensions should be between 0,5 and 5 mm.
  • channels could have a rectangular (Fig.1 - a), conic or biconic inner section, or be tapered off at one or the other or both ends (Fig.2 a - c).
  • channels according to this invention considerably increase the multi-hit resistance, because shock waves propagation through the tile is stopped thanks to these diffraction lines inside the material itself.
  • the internal volume of the channels could be streamlined with materials that have an acoustic impendence, as for example alumina, zirconia, boron carbide or silicon carbide, silicon nitride, silica or mixture thereof, metals as copper, iron, steel and wolfram, different from the ceramic one, such as plastic materials (low acoustic impendence) or metallic/ceramic materials (high acoustic impendence) .
  • plastic materials low acoustic impendence
  • metallic/ceramic materials high acoustic impendence
  • a further advantage of this invention is the weight reduction obtained by the presence of channels. This characteristic is very important because ballistic armors always represent a parasitic weight.
  • This invention involves tiles commonly made of ceramic materials such as: aluminum oxide, boron carbide, silicon carbide, glass ceramic materials, titanium diboride, or their mixtures and other similar products. They are manufactured following well known processes (using moulds or by extrusion). In the same way, the channels related to this invention are easily realized, by casting, extrusion or by cold pressing using moulds with punch matrixes. These are the most common forming techniques used for mass production.
  • Possible streamline can be easily conducted during the manufacturing process of the ballistic panel or as an intermediate phase after the ceramic tile production. While filling of channels can be made successively, after the monolithic tile production and can obtained by fusion of plastic, metal or vitreous materials.
  • channels can be filled with powder that are sintered with an additional thermal treatment.
  • a further producing system consists of the co-shaping of two ceramic powders or a ceramic and metal one. Recently, systems of co-injection of different ceramic materials have been set up, in order to obtain composite ceramic products.
  • Another manufacturing system consists of the filling of a mould with two powders, that are the matrix and the channels, with the second one placed upright resembling channels shape.
  • Multiple components proportioning systems are well known and used in many technical ceramics applications.
  • channels create 2—10 mm discontinuities (channels diameter 1 mm, at a distance of 2 mm from each other) while slots create discontinuities of 20-50 mm.
  • a higher discontinuity density heightens the effects and improves the capacity of arresting of the fracture propagation.
  • channels permits the mechanical connection of the two parts of the ballistic inserts making the whole structure more strong and firm. While, there is no possibility to reach this purpose with tiles with slots, because such slots should not have a diameter of more than 0,5 mm.
  • the high discontinuity density enhances the multi-hit power, in fact near to the impact point there will always be conjunction points between the two parts of the composite panel ( front and rear). This increases the ceramic confinement. It is well known in literature that the ceramic confinement improves the multi-hit characteristics. The ceramic fragments produced in the impact will be better hold together and confined thanks to the high density of the connections.
  • Channels can be distributed in the ceramic body of the tiles in a casual way or according to repeated geometric drawings, such as: parallel lines equidistant or at different distances from each other. Channels can be disposed in squares, hexagons, star-like shape etc. as schematically shown in Fig.3.

Landscapes

  • 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)
  • Compositions Of Oxide Ceramics (AREA)

Abstract

L'invention concerne des carreaux en céramique armés (10). Lesdits carreaux comprennent des canaux (11) destinés à empêcher la propagation de fissures lors d'un impact.
PCT/EP2010/058520 2009-06-17 2010-06-17 Composant céramique armé WO2010146106A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
IL210048A IL210048A (en) 2009-06-17 2010-12-16 Ceramic shielding component

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
ITFI2009A000130 2009-06-17
IT000130A ITFI20090130A1 (it) 2009-06-17 2009-06-17 Componenti per corazze ceramiche.

Publications (1)

Publication Number Publication Date
WO2010146106A1 true WO2010146106A1 (fr) 2010-12-23

Family

ID=41528665

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/EP2010/058520 WO2010146106A1 (fr) 2009-06-17 2010-06-17 Composant céramique armé

Country Status (4)

Country Link
US (1) US20100319523A1 (fr)
IL (1) IL210048A (fr)
IT (1) ITFI20090130A1 (fr)
WO (1) WO2010146106A1 (fr)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US8375841B2 (en) 2009-06-17 2013-02-19 Industrie Bitossi, S.p.A. Armor tile
IL209950A0 (en) * 2010-12-13 2011-02-28 Gigi Simovich Lightweight impact resistant panel
US20130316116A1 (en) * 2012-05-11 2013-11-28 Richard Adams Composite Ceramic Structure and Method of Manufacture
CN104457431A (zh) * 2014-11-25 2015-03-25 浙江立泰复合材料有限公司 防弹陶瓷插板止裂结构
JP2019516652A (ja) 2016-05-05 2019-06-20 サン−ゴバン セラミックス アンド プラスティクス，インコーポレイティド 多相セラミック複合材

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5221807A (en) * 1989-12-06 1993-06-22 Societe Europeenne De Propulsion Ballistic protection armor
US5824940A (en) * 1997-01-27 1998-10-20 Alfred University Ceramic bullet-proof fabric
EP1705452A1 (fr) * 2005-03-23 2006-09-27 Plasan Sasa Agricultural Cooperative Society Ltd. Plaques de blindage perforé
EP1878993A2 (fr) * 2006-07-11 2008-01-16 NP Aerospace Limited Blindage à base de plaques céramiques ou en métal

Family Cites Families (16)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4347796A (en) * 1976-06-24 1982-09-07 The United States Of America As Represented By The Secretary Of The Army Blast suppressive shielding
US4704943A (en) * 1981-06-15 1987-11-10 Mcdougal John A Impact structures
US4981067A (en) * 1989-09-18 1991-01-01 The United States Of America As Represented By The Secretary Of The Army Reactived armor improvement
US5007326A (en) * 1990-01-16 1991-04-16 The United States Of America As Represented By The Secretary Of The Army Cast single plate P900 armor
US6240858B1 (en) * 1997-05-27 2001-06-05 Michael C. Mandall Penetration resistant panel
US6679157B2 (en) * 1999-09-30 2004-01-20 Bechtel Bwxt Idaho Llc Lightweight armor system and process for producing the same
IL134642A0 (en) * 2000-02-21 2001-05-20 Israel State Ballistic armor panel
US6405630B1 (en) * 2000-11-03 2002-06-18 The United States Of America As Reresented By The Secretary Of The Army Foraminous ballistic grill
US7077048B1 (en) * 2001-06-22 2006-07-18 Southwest Research Institude Multi-layered trap ballistic armor
US20040216595A1 (en) * 2003-03-17 2004-11-04 Dickson Lawrence J. Formed metal armor assembly
ES2283701T3 (es) * 2003-11-25 2007-11-01 Sgl Carbon Ag Capa de ceramica de proteccion balistica.
WO2007055736A2 (fr) * 2005-05-26 2007-05-18 Composix Co. Blindage multi-coup céramique
US7696562B2 (en) * 2006-04-28 2010-04-13 Semiconductor Energy Laboratory Co., Ltd Semiconductor device
US7703375B1 (en) * 2006-08-15 2010-04-27 Lawrence Technological University Composite armor with a cellular structure
IL179592A (en) * 2006-11-26 2012-03-29 Moshe Ravid Armor panel
US20090136702A1 (en) * 2007-11-15 2009-05-28 Yabei Gu Laminated armor having a non-planar interface design to mitigate stress and shock waves

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5221807A (en) * 1989-12-06 1993-06-22 Societe Europeenne De Propulsion Ballistic protection armor
US5824940A (en) * 1997-01-27 1998-10-20 Alfred University Ceramic bullet-proof fabric
EP1705452A1 (fr) * 2005-03-23 2006-09-27 Plasan Sasa Agricultural Cooperative Society Ltd. Plaques de blindage perforé
EP1878993A2 (fr) * 2006-07-11 2008-01-16 NP Aerospace Limited Blindage à base de plaques céramiques ou en métal

Also Published As

Publication number Publication date
ITFI20090130A1 (it) 2010-12-18
IL210048A (en) 2014-05-28
US20100319523A1 (en) 2010-12-23
IL210048A0 (en) 2011-02-28

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