摘要:
The present invention has a cooling unit (29) as a temperature gradient formation unit for forming a temperature gradient in which the temperature is lowered in the direction from one surface (18a) of a semi-cured prepreg sheet (18) layered on a top surface (12a) of a layered body (12) toward the other surface (17b) of a release sheet (17), in a first region (C1) of a layered sheet (16) located upstream from a first roller (52).
摘要:
A tool comprising a support section, a plurality of tool sections beatable around the core section to define one or more tool surfaces on which structure material is beatable to be molded to form a composite structure, the support section and enclosure means being sealingly engagable to enclose the tool sections and structure material therebetween, thus allowing air to be withdrawn from between the enclosure means and the support section as part of the cure process of the structure material. Sealing the enclosure means directly against the support section obviates the need for the tool sections to be sealingly interconnected.
摘要:
Composite structural members and methods for forming the same are disclosed. In one disclosed embodiment, a composite structural member (10) includes a central structural portion (16) comprised of a reinforced, polymer-based material and having a length, a first side and an opposing second side extending along the length. A first reinforcement member (12) fixedly coupled to the first side and a second reinforcement member (14) fixedly coupled to the second side.
摘要:
Eine Legemaschine für die Fertigung eines Werkstücks (25) aus Verbundmaterial umfasst eine Hohlform (6) und wenigstens einen in der Hohlform (6) zum Auslegen einer Innenfläche der Hohlform (6) mit einem Materialband bewegbaren Legekopf (3). Die Hohlform (6) umfasst wenigstens drei Teilschalen (8, 9, 10), die zwischen einer ersten Stellung, in der Innenflächen der Teilschalen (8, 9, 10) dicht aneinander anschließen, und einer zweiten Stellung, in der die Innenflächen von wenigstens zwei der Teilschalen (8, 10) durch einen Spalt (44) getrennt sind, bewegbar sind.
摘要:
The invention relates to methods of bonding and a conductively bonded joint, provided by high loadings of conductively coated nano scale particulate fillers in a conductive adhesive in combination with a conductive intermediary structure, more particularly to a lightning strike resilient bonded joint between fibre reinforced polymer composites. A method of joining a first fibre reinforced polymer composite surface and a second fibre reinforced polymer composite surface, comprising the steps of providing a conductive intermediary structure between said first and second surfaces, filling the void between said surfaces and enveloping said intermediary structure with a conductive adhesive, curing the conductive adhesive to form a bonded first and second surface. A conductive adhesive comprising a curable binder and a high aspect ratio nanoscale carbon particulate filler present in the range of from 0.1 to 40% wt, wherein said particulate filler comprises a metal coating.
摘要:
There is provided a composite structure (3) formed of a composite member which extends in one direction, includes holes (5), and is made of fiber reinforced plastics. A tensile load and/or a compressive load are applied to the composite structure (3) in the one direction. Tensile stiffness and/or compression stiffness of peripheral areas (3a) of the holes (5) in the one direction is lower than tensile stiffness and/or compression stiffness of the other area (3b), which surrounds the peripheral areas (3a), in the one direction, and the width of the peripheral area (3a) in a direction orthogonal to the one direction is set to 1.1 times or less of the diameter of the hole (5) in the direction orthogonal to the one direction.
摘要:
Radius fillers (390) for composite structures (30), composite structures (30) that include radius fillers (390), and systems (100) and methods (400) of forming the same are disclosed herein. The methods (400) include determining a transverse cross-sectional shape of an elongate void (38) space, which extends within a transition region (40) that is defined by a plurality of plies (48) of composite material (31), and determining a material property field of the transition region (40). The methods (400) further include forming the radius filler (390) by combining a plurality of lengths of composite tape (160) to define a radius filler (390) cross-sectional shape, which corresponds to the transverse cross-sectional shape of the elongate void (38) space, and orienting a plurality of lengths of reinforcing fiber (90) in each of the plurality of lengths of composite tape (160) based, at least in part, on the material property field of the transition region (420). The radius fillers (390) include radius fillers (390) with selectively oriented reinforcing fibers (90). The composite structures (30) include the radius fillers (390).
摘要:
The present invention relates to a jig for the manufacture, by means of injection and curing processes, of preforms of composite material frames for aircraft fuselages by using the RTM (resin transfer molding) technology. Two preforms are thus manufactured, one with a C shaped section and another with a L shaped section, together with the preforms of the stabilization ribs for stabilizing the web of the frames and the preform of the roving or staple fiber to cover the gap between the C shaped preform and the L shaped preform. Theses preforms are previously manufactured by any known process for manufacturing preforms. According to a second aspect, the present invention relates to a method of manufacturing composite material load frames for aircraft.