A three-dimensional printing system includes a print engine and a controller. The controller in turn includes a processor coupled to a non-transient memory. The non-transient memory stores software instructions that when executed by the processor cause the controller to operate the print engine to fabricate a body. The body includes a three-dimensional arrangement of 3D articles that are pairwise coupled together. An individual pair of the arrangement of 3D articles includes a first article and a second article. A curved body couples a first surface of the first article to the second article. The curved body intersects the first surface to define a closed intersection curve that bounds a break surface. Along the closed intersection curve a surface of the curved body subtends an acute angle with the first surface.

A method for producing a fiber reinforced plastic can suppress with which wrinkling or bridging in a convex surface or a concave surface having a large curvature at the same time even if the fiber reinforced plastic has a complicated three-dimensional shape. Such methods for producing a fiber reinforced plastic may involve shaping a prepreg sheet in which continuous fibers are impregnated with a resin material into a three-dimensional shape to produce a fiber reinforced plastic (a); wherein at least a portion of the continuous fibers in an area (X) of the prepreg sheet corresponding to an area (X′) in which the fiber reinforced plastic (a) is shear-deformed is bent in an in-plane direction in advance.

Method of forming a plate including providing a sheet of polyethylene terephthalate foam and thermoforming the polyethylene terephthalate foam into a plate. The plate comprising a bottom wall having an outer perimeter, an upper surface, and a lower support surface defining a horizontal reference plane. The plate further comprising a sidewall extending upwardly and outwardly from the outer perimeter at an angle “a” of between about 30° to about 35° relative to a vertical axis perpendicular to the horizontal reference plane. The plate further including a rim extending laterally outwardly from an upper edge of the sidewall and a turndown flange extending downwardly from an outer edge of the rim and terminating at a free end.

An apparatus and method for making a three-dimensional object from a solidifiable material using a linear solidification device is shown and described. Either a build platform or a solidification substrate has a curved surface, and each point on the curved surface traverses a trochoidal path during an object solidification operation. The curved surface allows the separation forces between the solidification substrate and the most recently solidified layer of material to be concentrated along a line instead of along a planar section which reduces the overall separation force and the likelihood of damaging a part.

A device for producing a curved fiber preform from a bi- or multidirectional fiber semi-finished product, in particular for an aircraft or spacecraft fuselage component has first lamellae and second lamellae formed to be couplable to one another criss-cross such that they are positioned on a shared plane and thus form a grid. The lamellae at least in part are formed resiliently bendable about an axis intersecting the shared plane such that a local orientation of the lamellae in the grid changes. An adhesion device or structure is formed for temporarily adhering the fiber semi-finished product and is configured such that the local fiber orientation of the fiber semi-finished product also changes accordingly when the lamellae bend.

An arch-shaped corrugated chamber having corrugation peaks and valleys, with reinforcing ribs provided on the corrugation peaks. The ribs extend upwardly from a chamber base to a rib upper end, and have an arch-shaped cross-section with an outer surface extending outwardly from a corrugation peak and a fin extending inwardly from the corrugation peak, and optionally, a rib line provided on the rib outer surface centered on the rib arch-shaped cross-section. A channel formed by the inner surface of the rib is sized to receive a corresponding rib of a second chamber so that multiple similar chambers with ribs may be stacked together.

A method and apparatus for forming a continuously molded carbon fiber reinforced polymer slender curved frame. A continuous supply of uncured carbon fiber reinforced polymer material is directed into a forming tool. The uncured carbon fiber reinforced polymer material is continuously molded into a desired shape in the forming tool. The carbon fiber reinforced polymer material is cured into a frame of the desired shape in the forming tool. The frame is removed from the forming tool. An out-of-plane curvature is put in the frame while the frame is in at least a portion of the forming tool.

A three-dimensional printing system includes a print engine and a controller. The controller in turn includes a processor coupled to a non-transient memory. The non- transient memory stores software instructions that when executed by the processor cause the controller to operate the print engine to fabricate a body. The body includes a three-dimensional arrangement of 3D articles that are pairwise coupled together. An individual pair of the arrangement of 3D articles includes a first article and a second article. A curved body couples a first surface of the first article to the second article. The curved body intersects the first surface to define a closed intersection curve that bounds a break surface. Along the closed intersection curve a surface of the curved body subtends an acute angle with the first surface.

Device and method for the production of a mold having a fiber-reinforced support and connected therewith at least one add-on piece featuring synthetic material, with the device having at least one first tool component (10) and a second tool component (20), at least one of which is movable relative to the other; in this way, the device can be opened to insert a fiber-reinforced mat (30) between the respective pressing surfaces (11, 21) of the two tool components (10, 20), and closed for pressurizing and molding the mat (30), which produces the fiber-reinforced support, and with the second tool component (20) having at least one nozzle (22) to supply a liquefied synthetic material, and the first tool component (10) having at least one cavity (12) away from the nozzle to form the add-on piece, characterized in that the second tool component (20) has at least one cavity (24) at the nozzle so that the add-on piece can be produced and integrated by introducing synthetic material through the nozzle (22) and through the mat (30) into the cavity (12) away from the nozzle and the cavity (24) at the nozzle and hardening it therein.

A resin molded article includes a main body or a plate portion formed in a substantially rectangular plate shape, and at least one rib that is integrally raised from the plate portion. The plate portion has a pair of long sides facing each of her, and a pair of short sides facing each other. The short sides are shorter than the long sides. Each of at least one rib is formed along at least one of the two long sides such that the rib includes, at least, an area over the center of the long side concerned. The height of the rib is set to be lowest at opposite ends thereof.