A composite structure with porous metal comprises a porous metal structure and a carbon nanotube structure comprising a plurality of carbon nanotubes, the carbon nanotube structure is fixed on surface of the porous metal structure, and the porous metal structure and the carbon nanotube structure are shrunk together to form a plurality of wrinkled parts.

An additive manufacturing system includes a foil supply drum, a melting energy source, and a processor. The foil supply drum is configured to be rotated for dispensing a foil sheet over a substrate surface supported by a build element. The melting energy source is configured to direct at least one melting energy beam onto a non-melted region of the foil sheet located over the substrate surface. The processor is configured to execute computable readable program instructions based on a three-dimensional digital definition of the object, and control the melting energy beam to selectively melt at least some of the non-melted region into melted portions forming a material layer of the object onto the substrate surface while separating the melted portions from non-melted portions, and command rotation of the foil supply drum for dispensing the foil sheet during manufacturing of the object in correspondence with the digital definition.

Composite door systems that are configured for providing safety, security, and resistance to physical impacts or threats (natural and man-caused), and which can be utilized in barrier structures, such as for doors. The composite door systems may include one or more layers, each of which may have one or more fiber layers, such as fabric layers or plastic layers. The composite door systems may further include one or more additional layers of a sheet material, a fill material, or the like. The composite door systems are infinitely customizable and configured to be adapted to a variety of applications, and scalable levels of protection.

A damping cover for an integrated power electronics module (IPEM), the damping cover generally defined by a top side and a bottom side, wherein the bottom side is configured to mate adjacent with or contiguous to a power inverter module (PIM) of the IPEM. The damping cover can include an aluminum foam core including a top surface generally corresponding to the top side of the damping cover and a bottom surface generally corresponding to the bottom side of the damping cover and a polymeric over-molding or non-porous aluminum outer layer covering the top surface and/or a polymeric over-molding or non-porous aluminum outer layer covering the bottom surface. The bottom side of the damping cover can mate adjacent with or contiguous to the PIM. The polymeric material over-molding can completely impregnate the aluminum foam core. The aluminum foam core can have a density of about 0.15 g/cm.sup.3 to about 1.0 g/cm.sup.3.

A piezoelectric speaker-forming laminate (10) includes: a piezoelectric film (35); a pressure-sensitive adhesive face (17); an interposed layer (40) being a porous body layer and/or a resin layer disposed between the piezoelectric film (35) and the pressure-sensitive adhesive face (17); and a release layer (20) joined to the pressure-sensitive adhesive face (17). The pressure-sensitive adhesive face (17) is disposed in such a manner that at least a portion of the piezoelectric film (35) overlaps the pressure-sensitive adhesive face (17) when the piezoelectric film (35) is viewed in plan. The piezoelectric film (35) and the interposed layer (40) are allowed to be fixed to a support (80) as a piezoelectric speaker or a portion of a piezoelectric speaker by sticking the pressure-sensitive adhesive face (17) from which the release layer (20) has been removed to the support (80).

Embodiments of the present technology include graphene-metal composites. An example graphene-metal composite comprises a porous metal foam substrate, a graphene layer deposited to the porous metal foam substrate, a metal layer applied to the graphene layer, and another graphene layer deposited to the metal layer; the multilayered porous metal foam substrate being compressed to form a graphene-metal composite.

A piezoelectric speaker (10) includes: a piezoelectric film (35); a fixing face (17) for fixing the piezoelectric film (35) to a support; and an interposed layer (40) disposed between the piezoelectric film (35) and the fixing face (17). The interposed layer (40) has a holding degree of 510.sup.8 N/m.sup.3 or less.

An aluminized metallic scaffold for high temperature applications comprises a porous non-refractory alloy structure including a network of interconnected pores extending therethrough. The porous non-refractory alloy structure comprises a transition metal phase and an aluminide phase, and portions of the porous non-refractory alloy structure between interconnected pores have a thickness no greater than about 500 nm. A method of making an aluminized metallic scaffold for high-temperature applications comprises introducing aluminum into a surface of a porous metallic structure at an elevated temperature. The porous metallic structure comprises a transition metal and has a network of interconnected pores extending therethrough, where portions of the porous metallic structure between interconnected pores have a thickness no greater than about 500 nm. As the aluminum is introduced into the surface and diffusion occurs, an aluminide phase is formed, resulting in a porous non-refractory alloy structure comprising the aluminide phase and a transition metal phase.

Provided is a press forming method for a composite material. A press forming method for a composite material including an upper metal member, a resin member, and a lower metal member, and including: producing the lower metal member having first and second coating films respectively bonded to upper and lower surfaces thereof; producing the composite material including the upper metal member, a first hot melt member, the resin member, a second hot melt member, and the lower metal member; cutting an area spaced inward a predetermined distance from a lengthwise edge of the composite material by using a T-cutter, such that only the lower metal member remains; removing the upper metal member, the first hot melt member, the resin member, and the second hot melt member that are located outside the cut area; and folding the lower metal member by an angle of 180 degrees by using a hemming die.

A gas diffusion electrode substrate has an electrically conductive porous substrate and a microporous layer-1 on one side of the electrically conductive porous substrate. The microporous layer-1 includes a dense portion A and a dense portion B. The dense portion A is a region containing a fluorine resin and a carbonaceous powder having a primary particle size of 20 nm to 39 nm. The dense portion A has a thickness of 30% to 100% with respect to the thickness of the microporous layer-1 as 100% and a width of 10 m to 200 m. The dense portion B is a region containing a fluorine resin and a carbonaceous powder having a primary particle size of 40 nm to 70 nm.