The invention relates to a method for producing a corrugated fin element for a heating register or for another heating device, through which corrugated fin element a flow can pass, to a corrugated fin element produced according to such a method, and to a heating register designed with such corrugated fin elements, wherein the corrugated fin elements are produced by unfolding.

A method of making a corrugated metal deck assembly including an elongated corrugated metal deck portion having substantially longitudinally extending, generally U-shaped peaks and valleys. One or more support channels are formed integrally with the corrugated metal deck portion prior to casting concrete thereon. Each of the support channels are configured with a generally U-shaped cross-section having generally opposed side walls having leg portions extending generally laterally inwardly from the corresponding side walls and defining a slot facing generally downwardly from the corrugated metal deck. The support channels are adapted for receiving therethrough and supportably engaging at least portions of anchors or support items. The slots may be provided with one or more internal threads into which externally threaded portions of anchors or support items may be screwed to fixedly attach the anchors or support items to the one or more integrated support channels.

An auxetic structure includes material elements in a pattern with openings between the material elements. The structure in a planar and/or non-planar position includes at least one local variation from a regular pattern of the material elements and/or a regular pattern of the openings, so that when spatially deformed, at least some openings in the structure are locally stretchable into polygonal openings, free-from opening and/or openings with curved parts forming a spatial, grid-shaped pattern or a grid-shaped matrix.

An auxetic structure includes material elements in a pattern with openings between the material elements. The structure in a planar and/or non-planar position includes at least one local variation from a regular pattern of the material elements and/or a regular pattern of the openings, so that when spatially deformed, at least some openings in the structure are locally stretchable into polygonal openings, free-from opening and/or openings with curved parts forming a spatial, grid-shaped pattern or a grid-shaped matrix.

Decking with a panel of uniform thickness sheet metal has a repeating pattern of top flanges and bottom flanges connected by webs therebetween. At least one flange is made up of a plurality of folded-layer segments adjacent to each other in a stacked position to increase the thickness of the flange. Additionally a structural member extending along a longitudinal axis has a uniform thickness plate folded back onto itself about the longitudinal axis or an axis parallel to the longitudinal axis to increase the thickness and provide greater resistance to buckling in response to compressive forces. Such structural members not only provides certain structural advantages but also may provide an aesthetically pleasing appearance.

A manufacturing method of a body frame includes a pre-strain step of press molding a wavy shape portion in the body frame to apply pre-strain after any press molding to mold the body frame.

A manufacturing method of a body frame includes a pre-strain step of press molding a wavy shape portion in the body frame to apply pre-strain after any press molding to mold the body frame.

The invention relates to a bending device for forming corrugations in a metal sheet including: a lower frame; an upper frame able to move vertically between a rest position and a bending position; at least two dies, carried by the lower frame; one being fixed with respect to the lower frame and the other mounted with the ability to slide; at least two punches carried by the upper frame; one being fixed and the other being mounted with the ability to slide on the upper frame; the bending device being designed so that, in operation, as the upper frame moves towards its bending position, the metal sheet transmits a pulling force to the sliding punch and to the sliding die which force moves them from a spaced-apart position toward a close-together position.

The invention relates to a bending device for forming corrugations in a metal sheet including: a lower frame; an upper frame able to move vertically between a rest position and a bending position; at least two dies, carried by the lower frame; one being fixed with respect to the lower frame and the other mounted with the ability to slide; at least two punches carried by the upper frame; one being fixed and the other being mounted with the ability to slide on the upper frame; the bending device being designed so that, in operation, as the upper frame moves towards its bending position, the metal sheet transmits a pulling force to the sliding punch and to the sliding die which force moves them from a spaced-apart position toward a close-together position.

One embodiment includes a rib structure to be used, for example, in any number of aerospace applications, the rib structure, comprising a first piece having a first curvature in a first plane; and a second piece having a second curvature in a second plane that is different from the first plane. The first piece and the second piece are bonded together to form the rib structure. In certain embodiments, the first piece further comprises a plurality of discontinuous flanges to interface with a plurality of skin surfaces. In other examples, the first piece includes an aft spar interface for bonding to a surface. In some implementations, the first piece includes a forward spar interface for bonding to a surface. Manufacturing of the airframe/aircraft parts, panels, and rib components can include any suitable composites, alloys, titanium, aluminum, artificial materials, sheet metal, etc.