A multilayer strip intended to be wound on a form to manufacture a part in composite material, includes superposed fibrous layers, at least one of these layers being pre-impregnated, the superposed fibrous layers including a first layer including a first material on a first side of the width of the strip and a second material, differing from the first material, on a second side of the width of the strip opposite the first side, and a second layer superposed on the first layer and including the first material on the first side and the second material on the second side, with overlapping of a material of the second layer over a different material of the first layer.

A modular and expandable 3D printer frame includes frame members to be coupled together to form a base defining an inner area. Each frame member includes at least one coupling member to removably couple the frame member to another of the frame members. The printer frame further includes first modular plates to be disposed within the inner area, and second modular plates to be disposed within the inner area and removably coupled to the first modular plates. The first and second modular plates, when coupled together, define a printer footprint.

A method for surface preparation of a composite substrate prior to adhesive bonding. The surface preparation method includes applying a resin-containing peel ply onto a composite substrate, followed by co-curing. The resin-containing peel ply contains a non-removable textile carrier and a removable woven fabric embedded therein. After co-curing, the peel ply is removed from the composite substrate such that the removable woven fabric is removed but the non-removable textile carrier and a film of residual resin remain on the composite substrate, thereby creating a modified, bondable surface on the composite substrate. The composite substrate with the modified surface can be bonded to another composite substrate, whereby the textile carrier remains an integrated part of the final bonded structure.

A partially polymerised thermohardenable connection part and to methods for producing and assembling such a connection part. The connection part for connecting two mechanical parts is thermohardenable and is partially polymerised in such a way as to be rigid at room temperature and able to be subjected to a subsequent polymerisation, the connection part being thus both sufficiently rigid to be able to be manipulated and brought into contact with at least one of the two mechanical parts which it is to interconnect and able to be subjected to a subsequent additional polymerisation in order to achieve its final polymerised state, the material of the connection part being rendered sufficiently soft during the additional polymerisation that it can adapt to the form of at least one of the mechanical parts to which the connection part must be connected.

A high altitude balloon. A plurality of layers of coextruded extrudate are formed in a seamless sheet in a shape that defines a balloon envelope. Delaminator layers may be interposed between two or more of the layers of extrudate.

Systems and methods for 3D printing hollow bodies, such as bodies having an exterior cylindrical shape with a hollow interior, are described. Such systems and methods utilize rotatable hollow print base supports having an interior size and/or shape that matches the desired exterior shape of the final printed structure. The printed bodies, methods, and systems enable printing of the desired hollow printed body from the outside-to-inside. They also allow easy production, customization, and modification of internal structures within the printed hollow body.

The present invention is a unique process of manufacturing rigid members with precise “shape keeping” properties and with reflective properties pertaining to radio frequency energy, so that air, land, sea and space devices or vehicles may be constructed including parabolic reflectors formed without discrete permanent layering. Rather, such parabolic reflectors or similarly, vehicles, may be formed by homogeneous construction where discrete layering is absent, and where energy reflectivity or scattering characteristics are embedded within the homogeneous mixture of carbon nanotubes and associated graphite powders and epoxy, resins and hardeners. The mixture of carbon graphite nanofiber and carbon nanotubes generates higher electrode conductivity and magnetized attraction through molecular polarization. In effect, the rigid members may be tuned based on the application. The combination of these materials creates a unique matrix that is then set in a memory form at a specific temperature, and then applied to various materials through a series of multiple layers, resulting in unparalleled strength and durability.

An apparatus, system, and method utilizes at least two separate components during the process of producing the final product. At least one component during the process is produced using additive manufacturing, and additional components are components that are combined with the additively manufactured part. The apparatus, system, and method includes at least one energetic component and at least one second inert component. An additive manufacturing system produces a scaffold of said first energetic component(s). A system adds the second component(s) to the scaffold to produce the energetic material product.

Radiation-shielding composite materials and their methods of manufacture. Such methods may include adding a metal hydride to a hardenable matrix precursor, adding a reinforcing material to the hardenable matrix precursor, and hardening the matrix precursor to form a composite material that incorporates the reinforcing material and the metal hydride in a solid matrix. The resulting radiation-shielding composite materials are configured to attenuate incident radiation, and may be used in the construction of panels, laminate structures, buildings, and aerospace vehicles, among others.

The present invention is a unique process of manufacturing rigid members with precise “shape keeping” properties and with reflective properties pertaining to radio frequency energy, so that air, land, sea and space devices or vehicles may be constructed including parabolic reflectors formed without discrete permanent layering. Rather, such parabolic reflectors or similarly, vehicles, may be formed by homogeneous construction where discrete layering is absent, and where energy reflectivity or scattering characteristics are embedded within the homogeneous mixture of carbon nanotubes and associated graphite powders and epoxy, resins and hardeners. The mixture of carbon graphite nanofiber and carbon nanotubes generates higher electrode conductivity and magnetized attraction through molecular polarization. In effect, the rigid members may be tuned based on the application. The combination of these materials creates a unique matrix that is then set in a memory form at a specific temperature, and then applied to various materials through a series of multiple layers, resulting in unparalleled strength and durability.