A dual hardness steel article comprises a first air hardenable steel alloy having a first hardness metallurgically bonded to a second air hardenable steel alloy having a second hardness. A method of manufacturing a dual hard steel article comprises providing a first air hardenable steel alloy part comprising a first mating surface and having a first part hardness, and providing a second air hardenable steel alloy part comprising a second mating surface and having a second part hardness. The first air hardenable steel alloy part is metallurgically secured to the second air hardenable steel alloy part to form a metallurgically secured assembly, and the metallurgically secured assembly is hot rolled to provide a metallurgical bond between the first mating surface and the second mating surface.

A dual hardness steel article comprises a first air hardenable steel alloy having a first hardness metallurgically bonded to a second air hardenable steel alloy having a second hardness. A method of manufacturing a dual hard steel article comprises providing a first air hardenable steel alloy part comprising a first mating surface and having a first part hardness, and providing a second air hardenable steel alloy part comprising a second mating surface and having a second part hardness. The first air hardenable steel alloy part is metallurgically secured to the second air hardenable steel alloy part to form a metallurgically secured assembly, and the metallurgically secured assembly is hot rolled to provide a metallurgical bond between the first mating surface and the second mating surface.

A convertible bullet-proof backpack and vest includes a body section divided into a front portion, a middle portion, and back portion. The middle portion has a head slot opening, and the front and back portions have respective sections of bullet-proof fabric integrated therein. A zipper runs around an outer perimeter of the front and back portions. In a backpack configuration, the front portion and the back portion fold toward each other and the zipper secures the outer perimeters of the front portion and the back portion together thereby forming a hollow backpack interior between them. In a bullet-proof vest configuration, the zipper is unzipped thereby allowing a user to insert their head through the head slot opening such that the front portion hangs in front of a torso of the user and the back portion hangs behind the torso of the user.

The present invention relates to a panel assembly adapted to absorb a blast effect. The panel assembly includes a panel adapted to be displaceably mounted to a frame, an extendable connecting assembly extending from the panel and adapted to be connectable to the frame so as to mount the panel to the frame, the extendable connecting assembly is adapted to extend in a longitudinal direction and in a controlled manner, such that the extendable connecting assembly includes, a controlling portion connected to the panel, and a connecting portion adapted to be connectable to the frame, the connecting portion glidably coupled to the controlling portion, such that the controlling portion is adapted to control the extension of the connecting portion from the controlling portion, such that the extendable connecting assembly is adapted to extend in a controlled manner to control the movement of the panel when receiving the blast effect.

The present invention relates to a panel assembly adapted to absorb a blast effect. The panel assembly includes a panel adapted to be displaceably mounted to a frame, an extendable connecting assembly extending from the panel and adapted to be connectable to the frame so as to mount the panel to the frame, the extendable connecting assembly is adapted to extend in a longitudinal direction and in a controlled manner, such that the extendable connecting assembly includes, a controlling portion connected to the panel, and a connecting portion adapted to be connectable to the frame, the connecting portion glidably coupled to the controlling portion, such that the controlling portion is adapted to control the extension of the connecting portion from the controlling portion, such that the extendable connecting assembly is adapted to extend in a controlled manner to control the movement of the panel when receiving the blast effect.

Described herein are armour components for civil or military vehicles made of high-strength 7XXX-series aluminium alloys requiring ballistic protection. For example, described herein are armour components used for manufacturing armour hulls and add-on appliqu?s, which are removable panels to be mounted on the external faces of the military vehicles.

Described herein are armour components for civil or military vehicles made of high-strength 7XXX-series aluminium alloys requiring ballistic protection. For example, described herein are armour components used for manufacturing armour hulls and add-on appliqu?s, which are removable panels to be mounted on the external faces of the military vehicles.

Silicon carbide composite materials contain CSiC with a density of 2.95 to 3.05 g/cm.sup.3 and a fiber bundle content of 2 to 10 wt. %. The fiber bundles have a length of 6 to 20 mm, a width of 0.2 to 3 mm, and a thickness of 0.1 to 0.8 mm. The fiber bundles are filled with a cured phenolic resin content of up to 45 wt. %, and the protected fiber bundles are integrated into an SiC matrix. A method produces the silicon carbide composite materials.

A composite material system having an aggregate bound by an elastomer encapsulant. The composite material (CM) is designed to defeat impinging projectiles by converting the kinetic energy (KE) in the projectile to damage in the aggregate and the elastomer and increasing the thermal energy in the CM and the projectile via frictional heating. In one embodiment, the CM comprises certain kinds of rocks encapsulated (or bound) in a hyper-elastic polymer, such as polyurethane (PU). The CM may be shaped into convenient shapes from modular assembly to create a ballistic resistant surface.

A composite material system having an aggregate bound by an elastomer encapsulant. The composite material (CM) is designed to defeat impinging projectiles by converting the kinetic energy (KE) in the projectile to damage in the aggregate and the elastomer and increasing the thermal energy in the CM and the projectile via frictional heating. In one embodiment, the CM comprises certain kinds of rocks encapsulated (or bound) in a hyper-elastic polymer, such as polyurethane (PU). The CM may be shaped into convenient shapes from modular assembly to create a ballistic resistant surface.