321results about How to "Improve ballistic performance" patented technology

A method of forming an article from an alpha-beta titanium including, in weight percentages, from about 2.9 to about 5.0 aluminum, from about 2.0 to about 3.0 vanadium, from about 0.4 to about 2.0 iron, from about 0.2 to about 0.3 oxygen, from about 0.005 to about 0.3 carbon, from about 0.001 to about 0.02 nitrogen, and less than about 0.5 of other elements. The method comprises cold working the alpha-beta titanium alloy.

A system for the inductive transmission of power from a primary coil to a secondary coil and its associated secondary circuits, and for the inductive transmission of data between the primary and secondary coils includes a hard body-armor plate mountable in a tactical garment wherein at least one primary coil is embedded in the plate behind the plate's strike-face by a substantially uniform said first depth, and wherein the primary circuits of the primary coil are adapted to be electrically connected to a central power source carried on or in cooperation with said garment, and at least one device pocket is provided for an electronic hand-held device wherein said device pocket is mountable to an outer surface of said garment so as to be in an inductively coupling position aligned over said primary coil in said plate to thereby align said secondary coil of a hand-held device in the device pocket over and into inductively coupled registry with said primary coil in the plate.

In the invention, the composite bullet-proof armour plate consists of a metal panel, a honeycomb core board, a ceramic wafer core and a metal rear panel bonded with the metal brazing layer via the organic adhesive layer. The preparing method is that using the brozing and the line-cutting method are finished the honeycomb core board and the plain or curved ceramic wafer core, whose size must fit in that of the honeycomb hole of the honeycomb core board. The panel and the rear panel must be made of the bullet-proof steel plate through heat treating after cold rolling. The Ag72Cu metal brazing material and the epoxy resin group high strength structural sizing for connecting the interface are assembly welded.

The invention discloses a bulletproof composite board comprising an buffer layer as the external layer, an absorption layer connected with the buffer layer, and a barrier layer connected with the absorption layer, wherein the buffer layer comprises a plurality of disks superposed into a scalelike structure, and the disks are provided with a convex surface towards the external layer; the absorption layer comprises weftless fabric pressure layers and knitted fabrics, which are superposed, and the weftless fabric pressure layers and the knitted fabrics comprise fibers of which the strength is atleast 15 cN/dtex and the modulus is at least 390 cN/dtex; and the barrier layer comprises a metal plate of which the tensile strength is greater than 1000 MPa. A bullet is deflected under the action of the convex surface of the disks, and the penetrating capability of the bullet is reduced; under the alternate actions of the weftless fabrics and the knitted fabrics, the energy of the bullet is quickly transferred and absorbed; and finally, the bullet is effectively prevented when getting into contact with the barrier layer with high strength.

Friction stir processing is applied to an aluminum-scandium alloy workpiece in either a wrought or cast state including scandium-containing precipitates. The process selectively modifies the microstructure of the aluminum-scandium workpiece, for example, by reducing grain size and recrystallization of the substrate. Benefits include increased physical properties of the aluminum-scandium alloys as well as the ability to form unique alloy structures.

The invention relates to bullet-proof glass. The bullet-proof glass is composited by laminated glass, polyurethane elastomer and a PC (polycarbonate) board. The bullet-proof glass has the advantages of simple structure, thinness, light weight, low cost and good bullet-proof effect. Further, the bullet-proof glass is capable of effectively proofing bullets and avoiding secondary harms to human bodies after being smashed into pieces.

The invention discloses a ceramic composite material bullet-proof chest board and a preparation method thereof. The ceramic composite material bullet-proof chest board is composed of a carbon fiber composite surface rigid layer, a ceramic composite material sheet combination layer, a bullet-proof fiber composite material body layer and a back elastic surface carbon fiber composite back-convex-proof layer. The ceramic composite material sheet combination layer is made of special fiber reinforced ceramic matrix materials and is of a needling insertion type combined structure or a three-dimensional crazing-prevention framework structure; a composite cementing and micropore riveting combined technology is adopted between the ceramic composite material layer and the bullet-proof body layer; finally, the ceramic composite material sheet combination layer and the bullet-proof fiber composite material body layer are wrapped in a rigid structure composed of the carbon fiber composite surface rigid layer and the back-convex-proof layer to form a whole. The ceramic composite material bullet-proof chest board has various advantages of being light, low in back convex, stable in high and low temperature structure, long in service life and the like. Meanwhile, the problem that a seam bullet-proof characteristic in a traditional splicing structure of ceramic sheets is poor is effectively avoided, and the ceramic composite material bullet-proof chest board has the overall characteristics of multiple bullet-proof materials.

A ballistic panel is described that comprises a ballistic-resistant component and a cover that comprises a laminate comprising (i) a substrate layer and (ii) an inner bonding layer. The cover is bonded to at least one surface of the ballistic-resistant component by the inner bonding layer of the laminate, and is bonded around the perimeter of the ballistic resistant component to form a perimeter seal. A method for making the ballistic panel is also described.

The present invention relates to hybrid composite structures with improved ballistic protection properties. More specifically, the present invention relates to hybrid composite structures with improved ballistic protection properties that comprise at least three sub-layers.

This invention provides one fiber strengthening metal or ceramics layer compound materials compound protection board in load board technique field, wherein, the protection board has at least one metal layer, fiber layer, ceramics layer structure under high temperature through active welding process, powder bursting process or active metal welding process to connect metal layer, fiber layer and ceramics layer.

Flexible ballistic resistant composite materials are described, having any of a number of important properties, or a combination of properties, including flexibility, comfort, weight, and/or ballistic performance. Representative composite materials comprise a plurality of fibrous layers, such as non-woven fibrous layers, with these fibrous layers comprises fibers (e.g., a network of fibers) having a tenacity of at least about 35 g/d and a tensile modulus of at least about 1200 g/d. Representative fibers include, for example, high tenacity poly(alpha-olefin) fibers. The fibrous layers also comprise a polymeric matrix deposited on the fibers. Advantageously, such composite materials may have an average total areal density per fibrous layer from about 16 g/m² to about 350 g/m², and often from about 16 g/m² to about 300 g/m², in addition to meeting flexural rigidity and/or stiffness criteria as described herein.

Lightweight energy-consuming bulletproof and explosion-proof wall, including corrugated steel plate, steel wire mesh, bulletproof plate, light-weight crack-resistant concrete and polymer coating. Connected by steel wire mesh connectors of corrugated steel plates, light energy-consuming materials are poured inside the corrugated steel plates, light elastic materials are poured between the corrugated steel plates and the steel mesh, the outer side of the steel mesh is provided with a bulletproof plate, and the outer side of the bulletproof plate is poured with light weight Crack-resistant concrete, the outer side of the lightweight crack-resistant concrete is sprayed with a polymer coating. The beneficial effects of the invention are: good bulletproof effect, strong anti-explosion ability, large deformation ability, high anti-cracking ability, light weight, maximum absorption of blast impact energy, effective prevention of secondary damage caused by explosive fragments, good explosion-proof effect, energy Significantly control explosion disasters and improve defense capabilities.

The invention discloses a composite bulletproof armor plate and a preparation method thereof. The composite bulletproof armor plate comprises a protective cover plate, ceramic plates, metal restraining plates, a fiber metal laminated plate and a porous metal sandwich plate; and the ceramic plates and the metal restraining plates are assembled and connected in an interference fit mode, the ceramicplates are supported through the fiber metal laminated plate and the porous metal sandwich plate, and the bullet resistance of a bulletproof armor plate is improved. The preparation technology is simple, the cost is low, compared with a traditional ceramic composite armor plate, the composite bulletproof armor plate is higher in impact resistance at a time and has the multi-time impact resistance,and the composite bulletproof armor plate has the wide application prospects in the bulletproof fields of armed helicopters, armored cars, vessels and the like.

The invention discloses a ceramic light-quality bulletproof helmet and preparing method, which is composed of ceramic base layer in the middle of helmet and PE layer on two sides through hot-pressed attaching, wherein the ceramic base layer is split by multiple prismoids, multiple pyramids and multiple bosses. The preparing method comprises the following steps: designing PE layer on the inner side of outer and inner surface of inner mould; splitting a layer of ceramic multiple prismoids, multiple pyramids and multiple bosses on the inner side of PE layer; pressing inner and outer mould through heating.

The invention provides an aramid fiber composite bulletproof helmet of a special structural design and a forming method of the helmet. The aramid fiber composite bulletproof helmet comprises a shell, a paint layer and a suspension piece, and is characterized in that the shell comprises an inner layer and an outer layer, the inner layer is composed of a plurality of layers of high-rubber-content fabric presoak materials, the outer layer is composed of a plurality of layers of low-rubber-content fabric presoak materials, and a polyurethane adhesive reinforcing layer is arranged between the inner layer and the outer layer of the shell. According to the bulletproof helmet manufactured according to the structural design and the forming process, the high strength of aramid fiber and mechanical properties of composite materials are brought into full play on the aspect of the bulletproof mechanism, the height of a bump generated on the inner side of the helmet after a bullet is shot is effectively reduced, and the injury to the head of a user from the protrusion on the inner side of the helmet is reduced. The number of layers through which the bullet penetrates is effectively reduced, and the safe margin of the helmet is improved. Due to the fact that more low-rubber-content presoak materials are adopted, the overall weight of the helmet is reduced by more than 50 g.

A method of fabricating a non-brittle, carbon nanopaper from single wall, multiwall, and combination thereof, from carbon nanotubes, using a vacuum deposition, high temperature annealing, and polystyrene polymer rinse process; which nanopaper can be nitrided by either a plasma-enhanced chemical vapor deposition (PECVD) process, or an by an electrochemical method, to obtain a useful chemically functionalized substrate, a substrate containing metastable N₄, N₈, and longer chain polymeric nitrogen clusters. Such nitrided carbon nanopaper can be used to enhance the ballistic performance of gun propellants, while reducing gun barrel wear and erosion thereof.

The invention relates to a silicon vanadium steel plate with promoted bulletproof performance and a manufacturing method. The bulletproof performance means the capacity of the silicon vanadium steel plate to resist against bullet shooting or glass breaking. The silicon vanadium steel plate can meet the practical requirements of stability and light weight. The silicon vanadium steel plate comprises the following chemical elements by weight percent: 0.28-0.43% of C, 0.3-2.0% of Si, 0.3-1.0% of Mn, 0.3-1.5% of Cr, 0.3-3.0% of Ni, 0.1-0.6% of Mo, 0.03-0.12% of V, not more than or equal to 0.03% of inevitable impurities and the balance of Fe.

The invention discloses a preparation method of a bulletproof helmet. The preparation method mainly comprises steps as follows: cutting, pasting forming, prepressing, edge cutting, forming, edge trimming, drilling, bonding of edge sealing rubber strips, surface treatment, paint spraying of the inner surface, bonding of a cap lining, paint spraying of the outer surface, inspecting and packaging. The method has the advantages that a shell of the bulletproof helmet is made of aramid II/III, so that bulletproof performance of the helmet is improved, and mass of the helmet is reduced.

Briefly the invention relates to a flexible fabric for use as for example in a roll-up shutter with improved ballistic properties. More specifically, the present invention is directed to a ballistic fabric that is formed from a unique cabled yarn and allows less deformation on impact. The unique cabled yarn may be a metal reinforced aramid yarn for giving the fabric additional strength.