Abstract:
In a method for manufacturing an acoustic panel (20), a core structure (25) is provided between and bonded to a top skin (22) and a septum (23). A plurality of perforations (32) are formed in the top skin (22) using an energy beam device (52). A plurality of perforations (34) are formed in the septum (23) through the top skin holes (32) using the energy beam device (56). A plurality of cavities (44) in the core structure (25) fluidly couple at least some of the perforations (32) in the top skin (22) with at least some of the perforations (34) in the septum (23).
Abstract:
The invention provides a method of producing a composite panel member (2), and especially a composite panel member (2) having a foam core sandwich structure for an airframe of an aircraft or spacecraft, the method comprising: providing one or more fibre reinforcement layer (L) in a panel moulding tool (3); moving or transferring the moulding tool (3) to an infusion station (S 1 ) that is pre-heated to an infusion temperature (T 1 ) and infusing the fibre reinforcement layer (L) in the moulding tool (3) with a polymer resin; moving or transferring the moulding tool (3) to a curing station (S 2 ) that is pre-heated to a curing temperature (T 2 ) and curing the resin-infused fibre reinforcement layer(s) in the moulding tool (3) to form a composite panel member (2); and moving or transferring the moulding tool (3) to a cooling station (S 3 ) that is provided at a cooling temperature (T 3 ) and cooling the composite panel member (2) in the moulding tool (3). In addition, the invention provides a corresponding system (1) for producing a composite panel member (2).
Abstract:
Provided herein is a system for manufacturing a core of a vacuum insulation panel, the system comprising: a plurality of molding cast parts (110a - 110d) disposed along one direction, and providing a molding space for core material to be supplied and press-molded; a plurality of raw material suppliers (10a - 120c) distanced from one another, and supplying core material to the molding space; a press-molder (130a, 130b) disposed between the raw material suppliers, and receiving the molding cast part where the core material is supplied through the raw material supplier (120a - 120c), and pressing the molding space; and a carrier (140) transferring the molding cast part after the core material is supplied by the raw material supplier (120a - 120c) and the molding space is press-molded by the press-molder.
Abstract:
The invention relates to a sandwich component having a moisture barrier and to a method for producing same. The sandwich component comprises at least one top layer (2) and a honeycomb core. The top layer (2) comprises a top ply (2a) made of reinforcement fibres having a thermoplastic matrix, and the honeycomb core consists of cellulose-based material and has a plurality of ribs (1), wherein the rib end edges span a plane on which the top layer (2) rests. Between the top ply (2a) and the ribs (1) of the honeycomb core, the top layer (2) comprises a barrier layer (2c), which is made of a thermoplastic material, the melting properties of which correspond to the melting properties of the thermoplastic matrix material of the top ply (2a). Furthermore, an intermediate layer (2b) is formed between the top ply (2a) and the barrier layer (2c) and comprises reinforcement fibres from the top ply (2a) and thermoplastic material of the barrier layer (2c), wherein the reinforcement fibres of the intermediate layer (2b) are penetrated by a portion of the thermoplastic matrix material of the top ply (2a) and by a portion of the thermoplastic material of the barrier layer (2c).
Abstract:
A basic core component is provided for forming, together with at least one another basic core component, a core structure of a rotor blade of a wind turbine. The basic core component includes a precasted base element being made from a foam material, and a resin receiving layer, which is adhered to at least one surface of the precasted base element. When, during a casting procedure, the resin receiving layer adjoins the surface of another basic core component, the resin receiving layer is adapted to receive resin such that, after hardening the received resin, the basic core element and the another basic core element are mechanically connected with each other.
Abstract:
Erfindungsgemäß ist ein Verfahren zum Herstellen einer Sandwichplatte aus mindestens einer zu laminierenden Deckschicht (26,28) und mindestens einem Kernschicht-Materialblock (8,10,12,14) und mindestens einem Querträger (16,4,18) mit einer laminierten Querträger-Schicht, mit dem Schritt: ● Anordnen eines Kernschicht-Materialblocks und eines Querträgers so, dass eine Oberfläche des Kernschicht-Materialblocks und eine Kante des Querträgers eine gemeinsam laminierbare Fläche für die zu laminierende Deckschicht bilden und dass die Querträger-Schicht in einem Winkel zu der laminierbaren Fläche liegt, dadurch gekennzeichnet, dass das Anordnen so erfolgt, dass mindestens in einem Bereich, wo die Kante der Querträger-Schicht in der laminierbaren Fläche liegt, ein Zwischenraum (30) zwischen dem Kernschicht-Materialblock und der Querträger-Schicht bleibt, und durch den nachfolgenden Schritt: ● Laminieren der laminierbaren Fläche so, dass Harz in dem Zwischenraum eine Verbindung zwischen der Querträger-Schicht und der zu laminierenden Deckschicht herstellt.