GB2364956A - Ballistic protection shield - Google Patents
Ballistic protection shield Download PDFInfo
- Publication number
- GB2364956A GB2364956A GB0018429A GB0018429A GB2364956A GB 2364956 A GB2364956 A GB 2364956A GB 0018429 A GB0018429 A GB 0018429A GB 0018429 A GB0018429 A GB 0018429A GB 2364956 A GB2364956 A GB 2364956A
- Authority
- GB
- United Kingdom
- Prior art keywords
- section
- ceramic
- ballistic protection
- protection shield
- polymer fibre
- Prior art date
- Legal status (The legal status 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 status listed.)
- Withdrawn
Links
- 239000000463 material Substances 0.000 claims abstract description 52
- 239000000835 fiber Substances 0.000 claims abstract description 45
- 239000000919 ceramic Substances 0.000 claims abstract description 44
- 229920000642 polymer Polymers 0.000 claims abstract description 41
- 229910010293 ceramic material Inorganic materials 0.000 claims abstract description 36
- 239000000853 adhesive Substances 0.000 claims abstract description 14
- 230000001070 adhesive effect Effects 0.000 claims abstract description 14
- 239000011248 coating agent Substances 0.000 claims abstract description 12
- 238000000576 coating method Methods 0.000 claims abstract description 12
- 239000012634 fragment Substances 0.000 claims abstract description 8
- 238000000034 method Methods 0.000 claims description 5
- 239000004593 Epoxy Substances 0.000 claims description 3
- 230000004888 barrier function Effects 0.000 claims description 3
- 229920005989 resin Polymers 0.000 claims description 3
- 239000011347 resin Substances 0.000 claims description 3
- 238000013467 fragmentation Methods 0.000 claims description 2
- 238000006062 fragmentation reaction Methods 0.000 claims description 2
- 238000010792 warming Methods 0.000 claims description 2
- 238000007493 shaping process Methods 0.000 claims 1
- NMFHJNAPXOMSRX-PUPDPRJKSA-N [(1r)-3-(3,4-dimethoxyphenyl)-1-[3-(2-morpholin-4-ylethoxy)phenyl]propyl] (2s)-1-[(2s)-2-(3,4,5-trimethoxyphenyl)butanoyl]piperidine-2-carboxylate Chemical compound C([C@@H](OC(=O)[C@@H]1CCCCN1C(=O)[C@@H](CC)C=1C=C(OC)C(OC)=C(OC)C=1)C=1C=C(OCCN2CCOCC2)C=CC=1)CC1=CC=C(OC)C(OC)=C1 NMFHJNAPXOMSRX-PUPDPRJKSA-N 0.000 abstract description 9
- 238000005336 cracking Methods 0.000 abstract description 4
- 239000004760 aramid Substances 0.000 abstract description 3
- 229920003235 aromatic polyamide Polymers 0.000 abstract description 3
- 239000003822 epoxy resin Substances 0.000 abstract description 2
- 229920000647 polyepoxide Polymers 0.000 abstract description 2
- 238000007747 plating Methods 0.000 description 7
- 238000012360 testing method Methods 0.000 description 6
- 229910000831 Steel Inorganic materials 0.000 description 5
- 239000010959 steel Substances 0.000 description 5
- 229920000785 ultra high molecular weight polyethylene Polymers 0.000 description 4
- 229910052580 B4C Inorganic materials 0.000 description 3
- 229910052581 Si3N4 Inorganic materials 0.000 description 3
- INAHAJYZKVIDIZ-UHFFFAOYSA-N boron carbide Chemical compound B12B3B4C32B41 INAHAJYZKVIDIZ-UHFFFAOYSA-N 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 238000003825 pressing Methods 0.000 description 3
- HBMJWWWQQXIZIP-UHFFFAOYSA-N silicon carbide Chemical compound [Si+]#[C-] HBMJWWWQQXIZIP-UHFFFAOYSA-N 0.000 description 3
- 229910010271 silicon carbide Inorganic materials 0.000 description 3
- HQVNEWCFYHHQES-UHFFFAOYSA-N silicon nitride Chemical compound N12[Si]34N5[Si]62N3[Si]51N64 HQVNEWCFYHHQES-UHFFFAOYSA-N 0.000 description 3
- 238000010438 heat treatment Methods 0.000 description 2
- 238000000465 moulding Methods 0.000 description 2
- TWNQGVIAIRXVLR-UHFFFAOYSA-N oxo(oxoalumanyloxy)alumane Chemical compound O=[Al]O[Al]=O TWNQGVIAIRXVLR-UHFFFAOYSA-N 0.000 description 2
- 238000004064 recycling Methods 0.000 description 2
- MWCLLHOVUTZFKS-UHFFFAOYSA-N Methyl cyanoacrylate Chemical compound COC(=O)C(=C)C#N MWCLLHOVUTZFKS-UHFFFAOYSA-N 0.000 description 1
- 239000004698 Polyethylene Substances 0.000 description 1
- 230000001133 acceleration Effects 0.000 description 1
- 238000010304 firing Methods 0.000 description 1
- SLGWESQGEUXWJQ-UHFFFAOYSA-N formaldehyde;phenol Chemical compound O=C.OC1=CC=CC=C1 SLGWESQGEUXWJQ-UHFFFAOYSA-N 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 229920001568 phenolic resin Polymers 0.000 description 1
- -1 polyethylene Polymers 0.000 description 1
- 229920000573 polyethylene Polymers 0.000 description 1
- 239000013585 weight reducing agent Substances 0.000 description 1
Classifications
-
- 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
- B32B3/00—Layered products comprising a layer with external or internal discontinuities or unevennesses, or a layer of non-planar shape; Layered products comprising a layer having particular features of form
- B32B3/10—Layered products comprising a layer with external or internal discontinuities or unevennesses, or a layer of non-planar shape; Layered products comprising a layer having particular features of form characterised by a discontinuous layer, i.e. formed of separate pieces of material
- B32B3/14—Layered products comprising a layer with external or internal discontinuities or unevennesses, or a layer of non-planar shape; Layered products comprising a layer having particular features of form characterised by a discontinuous layer, i.e. formed of separate pieces of material characterised by a face layer formed of separate pieces of material which are juxtaposed side-by-side
-
- 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
-
- 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
- B32B3/00—Layered products comprising a layer with external or internal discontinuities or unevennesses, or a layer of non-planar shape; Layered products comprising a layer having particular features of form
- B32B3/26—Layered products comprising a layer with external or internal discontinuities or unevennesses, or a layer of non-planar shape; Layered products comprising a layer having particular features of form characterised by a particular shape of the outline of the cross-section of a continuous layer; characterised by a layer with cavities or internal voids ; characterised by an apertured layer
- B32B3/266—Layered products comprising a layer with external or internal discontinuities or unevennesses, or a layer of non-planar shape; Layered products comprising a layer having particular features of form characterised by a particular shape of the outline of the cross-section of a continuous layer; characterised by a layer with cavities or internal voids ; characterised by an apertured layer characterised by an apertured layer, the apertures going through the whole thickness of the layer, e.g. expanded metal, perforated layer, slit layer regular cells B32B3/12
-
- 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
- B32B5/00—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts
- B32B5/22—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts characterised by the presence of two or more layers which are next to each other and are fibrous, filamentary, formed of particles or foamed
- B32B5/24—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts characterised by the presence of two or more layers which are next to each other and are fibrous, filamentary, formed of particles or foamed one layer being a fibrous or filamentary layer
- B32B5/26—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts characterised by the presence of two or more layers which are next to each other and are fibrous, filamentary, formed of particles or foamed one layer being a fibrous or filamentary layer another layer next to it also being fibrous or filamentary
-
- 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
- B32B2262/00—Composition or structural features of fibres which form a fibrous or filamentary layer or are present as additives
- B32B2262/02—Synthetic macromolecular fibres
- B32B2262/0253—Polyolefin fibres
-
- 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
- B32B2571/00—Protective equipment
- B32B2571/02—Protective equipment defensive, e.g. armour plates, anti-ballistic clothing
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Ceramic Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Aiming, Guidance, Guns With A Light Source, Armor, Camouflage, And Targets (AREA)
- Laminated Bodies (AREA)
Abstract
A ballistic protection shield 1 is made up of a first-section ceramic material 2 which breaks up an oncoming projectile and a second-section polymer fibre material 3 which arrests fragments of the projectile and the ceramic produced on impact. The first section ceramic material 2 has a surface coating of adhesive and a layer of a high performance polymer fibre 4 which has tough, elastic properties and which upon projectile impact prevents the ceramic from cracking extensively. The second section polymer fibre material 3 comprises a compacted form of multiple sheet layers. Holes 7 or cavities 8 (figure 7) are introduced to the first section ceramic layer 2 or sub-layers 5 as required to allow an increase in the depth of ceramic material for performance purposes without significantly increasing the product weight. A thin intermediate layer 9 of aramid stiffened by epoxy resin may be bonded between the first and second sections for higher levels of protection. Applications include vehicle bodywork and bulletproof vests.
Description
<Desc/Clms Page number 1>
BALLISTIC PROTECTION SHIELD The present invention relates to ballistic protection shields which may be used in various applications like vehicle bodywork and/or bulletproof vests. Special steels are currently used in the ballistic protection industry but ceramics have been known for some time as a potentiaily excellent ballistic protection material due to their extreme hardness and their lightness. This is of particular advantage in the automotive industry where using conventional materials results in an armour-plated vehicle being extremely heavy and not so easy to handle as a vehicle without such armour. Lightness, which leads to improved handling and quick acceleration, especially in the case when the vehicle is under fire, is perceived as a strong market advantage for ballistic protection vehicle manufacturers.
However, ballistic protection products made from ceramics have two major disadvantages in comparison with existing steel applications, namely they are briftle and, for the higher performance ceramics such as silicon carbide, silicon nitride and boron carbide, are difficult to produce economically. Their brittle nature means that although the hardness of the ceramic material is such that the first fired projectile striking it becomes pulverized, a second fired projectile arriving in the same area, as is possible under continuous or multi-hit firing conditions, does not however meet such strong resistance due to the tendency of the ceramic to crack. In fact the ceramic can, itself, become a projectile under continuous fire. This is particularly a problem in applications which need to meet the Committee for European Norms (CEN) standard FB6, F137 and higher levels of armour plating testing. In such tests the armour plating must be capable of withstanding the impact of a least three bullets of the type used in the recognized CEN standard F86, FB7 and higher levels of armoured plating testing to the extent that none of the three bullets or parts of the bullets pass through the armour plating material or cause the material to become a projectile itself and to the extent that the material can withstand the accepted crliteria of the armour
<Desc/Clms Page number 2>
plating industry multi-hit test when the bullets strike within a limited triangular zone in which the sides of the triangle are no longer than three times the diameter of the striking bullets.
It is an object of the present invention to provide a ballistic protection shidId using ceramic which is adapted so as to mitigate effects of the ceramic cracking following ballistic impacts. It is a further object of the present invention to produce economically a ballistic protection shield made from ceramic.
The present invention consists in a ballistic protection shield having a first section comprising a ceramic material, a surface coating of adhesive together with a layer of polymer fibre material and a second section comprising a polymer fibre material in a compacted form of sheet layers, the first and second sections being adapted so that upon impact of an oncoming projectile on the ceramic of the first section crack propagation within the ceramic of the first section is minimized and ceramic material fragments of either the ceramic material or projectile caused by fragmentation thereof due to the impact are arrested by the polymer fibre material of the second section.
For higher levels of protection, namely FB7 and above, an additional layer of material may be bonded between the first and second section materials. This additional layer would typically be an aramid fibre sheet of between 2mm to 5mm stiffened with epoxy or similar resin. The application of this intermediate layer is designed to minimise ceramic material breakaway from the back face of the first section material which tends to be caused by hard-core armour-piercing ammunition.
Typically, the oncoming projectile is a bullet. The first section ceramic material can be for example aluminum oxide, silicon carbide, silicon nitride or boron carbide and the layer of polymer fibre, may be, for example, a polyethylene-fibre such as dyneema from the company Dutch State.Mines (DMS) Holland, or any other type which is in sheet form and has toug h, elastic properties which prevent the ceramic from cracking extensively upon projectile
<Desc/Clms Page number 3>
impact. The polymer fibre material of the second section may also be of dyneema or similar material and is bonded and compacted together in layers through heating and pressing.
According to a preferred embodiment of the present invention, the first section ceramic material is built up in sub-layers in order to enhance the binding effect of the surface coating adhesive together with polymer fibre sheet which is applied between each individual ceramic layer, The first section ceramic material may also be laid in a series of standard mosaic pieces onto the polymer fibre material of the second section to further enhance binding and reduction of crack propagation. The thickness of the first and second section is variable according to the protection level required as defined by the international CEN and National Institute of Justice (NIJ) ballistic protection standard.
Addibonally, the ballistic protection shield ran be re-shaped to allow re- application of the same second section polymer fibre material in a different point of application when the contours of the protection shield are to be modified. For example, a ballistic protection shield fitted to a vehicle may be removed and reshaped to a new model with modified profile and dimensions. Being able to reuse the materials in the two section shield provides opportunities for longer term cost reduction and increased ability to compete on price with steel shields.
The ballistic protection shield in this re-usable form according to an embodiment of the invention will no longer present a disposable or recycling problem which is a distinct advantage in the automobile industry where vehicle manufacturers will shortly be required to accept used vehicles before disposal and recycling.
For higher protection levels, preferably the first section ceramic material has a series of holes to allow greater depth of the first section ceramic material without incurring significantly more weight. Individual layers of the mosaic ceramic pieces bearing the holes may be aligned or alternatively, staggered to provide fragment breaking barriers.
<Desc/Clms Page number 4>
A specific embodiment of the invention will now be described by way of example with reference to the accompanying drawings in which-.- Figure 1 shows a perspective view of a ballistic protection shield according to the present invention in a flat sheet configuration-, Figure 2 shows a ballistic protection shield as shown in figure 1 but with the first section comprising multiple layers of ceramic material; Figure 3 shows a ballistic protection shield as shown in figure 2 but with the layers of ceramic comprising modular mosaic pieces having a staggered configuration; Figure 4 shows a perspective view of a ballistic protection shield having a first section comprising a series of the standard ceramic mosaic pieces in a curved profile configuration assembled. with the surface coating adhesive and polymer fibre layer to the second section polymer fibre material which has been pre-shaped to a desired profile; Figure 5 shows the ballistic protection shield of figure 4 but with staggered mosaic ceramic pieces and holes incorporated in the mosaic pieces; Figure 6 shows a perspective view of the ballistic protection shield shown in figure 4 but with the mosaic pieces aligned-, Figure 7 shows a perspective view of the ballistic protection shield in a flat sheet configuration having a series of cavity areas in the first section ceramic, and Figure 8 shows a perspective view of the ballistic protection shield as shown in figure 3 but having an intermediate layer between the first and second sections.
Referring to figures 1 to 3 of the accompanying drawings, there is shown a perspective view of a ballistic protection shield 1 in a flat sheet configuration having a first section comprising a ceramic material 2 with a surface coating of adhesive and a layer of high performance polymer fibre 4 thereabove and a second section comprising a polymer fibre material 3. The first section ceramic material 2 may be for example aluminum oxide, silicon carbide, silicon nitride or
<Desc/Clms Page number 5>
boron carbide and the high performance polymer fibre material 4 may be a polyethylene-fibre, such as dyneema from the company DSM Holland, or any other which has tough and elastic properties so that upon projectile impact the polymer fibre material 4 prevents the first section ceramic material 2 from cracking substantially. The second section'polymer fibre material 3 is formed by bonding together multiple layers of polyethylene, such as dyneema, or other polymer fibre material, through heating and pressing into a compact form. As shown in figure 2, the first section ceramic material 2 can be built up in sub- layers 5 with the surface coating adhesive and polymer fibre material 4 applied between each individual ceramic sub-layer 5 in order to enhance the binding effect of the surface coating adhesive. The surface coating adhesive may be an epoxy resin, cyano-acrylate or phenol-formaldehyde, or any other material which is capable of bonding the ceramic sub-layers 5 and polymer fibre material 4 together. The ceramic sub-layers are produced using known ceramic moulding techniques.
When a projectile, such as a bullet, impacts on the ballistic protection shield 1, the ceramic impacted by the bullet and the bullet itself, fragment. However, the polymer fibre on the surface of the ceramic material 2 and sub- layers 5 hinders the spread of cracks in the first section ceramic material 2 and the second section polymer fibre material 3 catches fragments of the bullet and ceramic which are still traveling with considerable residual energy in the original direction of the bullet. The concept ran be summarized as a "break and catch" technique as opposed to simply arresting the projectile. The surface coating of adhesive and the first section ceramic material are designed so that intentional weak points do not need to be introduced in the ceramic surface as a potential solution to prevent the propagation of cracks.
The thickness of the ballistic protection shield 1 is selected so that the shield is capable of withstanding the impact of a least three bullets of the type used in the recognized CEN standard FB6, F137 and higher levels of armoured plating testing to the extent that none of the three bullets or parts of the bullets
<Desc/Clms Page number 6>
pass through the material or cause the material to become itself a projectile and to the extent that the material can withstand the accepted criteria of the armour plating industry multi-hit test when the bullets strike within a limited triangular zone in which the sides of the triangle are no longer than three times the diameter of the striking bullets. For applications up to FB7 level of the CEN standard the first section ceramic sub-layers 5 may vary between 1 mm and 6mm in thickness to a total combined thickness of between 4mm and 10mm and the second section polymer fibre 3 may vary between 5mm and 20mm in thickness. Increased thickness may be required above the FB7 level of protection.
The advantage of the ballistic protection shield 1 over conventional steel systems is its significant weight reduction without loss of protection performance and without increase in cost as a point of application fitted material.
In order to further enhance binding of the ceramic sub-layers 5 of the first section ceramic 2 and reduced crack propagation in the first section ceramic material 2, the ceramic sub-layers 5 are formed from a series of standard mosaic ceramic pieces 6 above the second section fibre material 3, as illustrated in figure 3. The mosaic ceramic pieces 6 are produced using known production moulding techniques. Referring to figures 4 to 6 of the accompanying drawings, there is shown the ballistic protection shield 1 formed in a profile configuration. The profile configuration is achieved by warming the layers forming the second section polymer fibre material 3 to around 1200C and applying pressure of between 5 to 10 bar and then forming the first section ceramic material 2 by bonding standard mosaic ceramic pieces 6 onto the surface of the second section polymer fibre material 3 together with individual layers of polymer fibre material 4 and surface coating adhesive applied to each of the sub-layers 5 of the first section ceramic material 2. Furthermore, should the shield need to be re-used, the second section polymer fibre material 3 is separated from the first section ceramic material 2 by means of dissolving the adhesive in a solution as is known in the art. The second section polymer fibre material 3 is then reshaped and a new series of ceramic material mosaic pieces 6 are bonded to the
<Desc/Clms Page number 7>
reshaped second section polymer fibre material 3. Being able to re-use the materials in the two section shield provides opportunities for longer term cost reduction and increased ability to compete on price with steel shields together with improved material re-cycling options for vehicle applications .
Referring to figures 5 and 6 of the accompanying drawings, the first section ceramic sub-layers 5 have a series of holes 7 to allow the thickness of the first section ceramic material 2 to be increased without substantially increasing the weight of the shield 1. The holes 7 of the mosaic pieces of each of the sub-layers 5 may be aligned, or alternatively, staggered with respect to the holes of the mosaic pieces of adjacent sub-layers 5 so as to provide further ceramic barrier levels to oncoming fragments. Furthermore, cavities may be formed as shown in figure 8, to enable an even deeper first section ceramic 2 to be provided without substantially increasing the weight of the shield 1.
For high levels of protection including FB7 and above, the ballistic protection shield 1 has an intermediate layer 9 of material, such as an aramid fibre sheet, which is bonded between the first section ceramic material 2 and the second section polymer fibre material 3 as shown in Figure 8 of the accompanying drawings. The intermediate layer 9 is typically between 2mm to 5mm in thickness and stiffened with epoxy or similar resin so as to minimise ceramic material fragmentating from the face of the first section ceramic material 2 which is in contact with the intermediate layer 9.
Whilst a particular embodiment has been described, it will be understood that modifications can be made without departing from the scope of the invention as defined by the appended claims.
<Desc/Clms Page number 8>
Claims (1)
- CLAIMS 1 A ballistic protection shield having a first section comprising a ceramic material, a surface coating of adhesive together with a layer of polymer'fibre material and a second section comprising a polymer fibre material in a compacted form of sheet layers, the first and second sections being adapted so that upon impact of an oncoming projectile on the ceramic of the first section crack propagation within the ceramic of the first section is minimized and ceramic material fragments of either the ceramic material or projectile caused by fragmentation thereof due to the impact are arrested by the polymer fibre material of the second section. 2. A ballistic protection shield as claimed in claim 1, wherein an intermediate layer of fibre sheet material stiffened by epoxy or similar resin is bonded between the first and second sections. 3. A ballistic protection shield as claimed in claim 1 or 2, wherein the ceramic material of the first section is made up of a series of layers each having their own surface coating of adhesive and polymer fibre material. 4. A ballistic protection shield as claimed in claim 3, wherein each layer of ceramic material of the first section comprises a plurality of mosaic pieces and wherein the interfaces between the mosaic pieces of each layer are staggered with respect to the interfaces between the mosaic pieces of adjacent layers. 5, A ballistic protection shield as claimed in any of claims 1 to 4, wherein the ceramic of the first section has a series of holes to allow a thicker first section without incurring significant unit-weight increase.<Desc/Clms Page number 9>6. A ballistic protection shield as claimed in claims 1 to 5, wherein each of the layers have holes and wherein the holes of each layer are staggered with respect to the holes of adjacent layers so as to provide a further barrier to oncoming fragments. 7. A ballistic protection shield as claimed in any one of claims 1 to 6, wherein cavities are included in the first section ceramic material to achieve a thicker section without significant unit-weight increase. 8. A ballistic protection shield as claimed in any one of the preceding claims wherein the final layer of the second section polymer fibre material is not attached to a preceding ceramic layer of the first section or intermediate layer so that a gap is created to provide alternative performance characteristics or for reasons of space utilisation at the point of application. 9. A method of shaping a ballistic protection shield as claimed in any one of the preceding claims, including the steps of reshaping the second section by warming the polymer fibre sheet layers of the second section to around 1200C and applying a pressure of between 5 to 10 bar and then bonding a first section of ceramic mosaic pieces onto the surface of the polymer fibre layer of the second section. 10. A method of reusing the polymer fibre material of a ballistic protection shield as claimed in any one of claims 1 to 8, including the steps of separating the polymer fibre material of the second section from the ceramic of the first section by means of dissolving the adhesive in a solution, reshaping the polymer fibre material of the second section and bonding a new series of ceramic mosaic pieces to the re-shaped profile of the second section.<Desc/Clms Page number 10>11. A ballistic protection shield constructed and arranged substantially as herein before described with reference to the accompanying drawings.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB0018429A GB2364956A (en) | 2000-07-28 | 2000-07-28 | Ballistic protection shield |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB0018429A GB2364956A (en) | 2000-07-28 | 2000-07-28 | Ballistic protection shield |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| GB0018429D0 GB0018429D0 (en) | 2000-09-13 |
| GB2364956A true GB2364956A (en) | 2002-02-13 |
Family
ID=9896428
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB0018429A Withdrawn GB2364956A (en) | 2000-07-28 | 2000-07-28 | Ballistic protection shield |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB2364956A (en) |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2008014020A1 (en) * | 2006-03-24 | 2008-01-31 | Honeywell International Inc. | Ceramic faced ballistic panel construction |
| WO2008037623A1 (en) * | 2006-09-27 | 2008-04-03 | Deutsches Zentrum für Luft- und Raumfahrt e.V. | Ceramic armoring and method for the production of ceramic armoring |
| WO2008054843A3 (en) * | 2006-03-24 | 2008-07-24 | Honeywell Int Inc | Improved ceramic ballistic panel construction |
| WO2011005109A1 (en) * | 2009-07-08 | 2011-01-13 | Frec Technology As | An antiballistic armour plate and a method for manufacturing such antiballistic armour plate |
| US8109557B1 (en) | 2007-06-08 | 2012-02-07 | Salinas Gino J C | Vehicle armor mat |
| EP2652433A1 (en) * | 2010-12-15 | 2013-10-23 | The Boeing Company | Sandwiched fiber composites for ballistic applications |
| GB2518121A (en) * | 2008-11-25 | 2015-03-18 | Np Aerospace Ltd | Combined vehicular armour |
| US9945643B2 (en) | 2016-06-29 | 2018-04-17 | Keith Brown | Ballistic resistant vehicle tray |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1151441A (en) * | 1966-03-31 | 1969-05-07 | Aerojet General Co | Lightweight Armour Material |
| GB2156272A (en) * | 1984-03-17 | 1985-10-09 | Michael Sacks | Protective shields |
| EP0488465A1 (en) * | 1990-11-28 | 1992-06-03 | Dsm N.V. | Multilayer antiballistic structure |
| US5395691A (en) * | 1989-06-19 | 1995-03-07 | Alliedsignal Inc. | Rigid polyethylene reinforced composites having improved short beam shear strength |
| FR2764370A1 (en) * | 1997-06-10 | 1998-12-11 | Sogerma | Self-bearing armoured structure for use in armour-plating applications |
-
2000
- 2000-07-28 GB GB0018429A patent/GB2364956A/en not_active Withdrawn
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1151441A (en) * | 1966-03-31 | 1969-05-07 | Aerojet General Co | Lightweight Armour Material |
| GB2156272A (en) * | 1984-03-17 | 1985-10-09 | Michael Sacks | Protective shields |
| US5395691A (en) * | 1989-06-19 | 1995-03-07 | Alliedsignal Inc. | Rigid polyethylene reinforced composites having improved short beam shear strength |
| EP0488465A1 (en) * | 1990-11-28 | 1992-06-03 | Dsm N.V. | Multilayer antiballistic structure |
| FR2764370A1 (en) * | 1997-06-10 | 1998-12-11 | Sogerma | Self-bearing armoured structure for use in armour-plating applications |
Cited By (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2008054843A3 (en) * | 2006-03-24 | 2008-07-24 | Honeywell Int Inc | Improved ceramic ballistic panel construction |
| US7642206B1 (en) | 2006-03-24 | 2010-01-05 | Honeywell International Inc. | Ceramic faced ballistic panel construction |
| WO2008014020A1 (en) * | 2006-03-24 | 2008-01-31 | Honeywell International Inc. | Ceramic faced ballistic panel construction |
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Also Published As
| Publication number | Publication date |
|---|---|
| GB0018429D0 (en) | 2000-09-13 |
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