Abstract:
An adjustable shim comprises a stack of plies comprising plastics material reinforced with a three-dimensional fiber layer, the plastics material being flowable under compressive force prior to cure for adjusting the thickness of the shim. The shim may be used to fill a void between two structural components joined together. Also, a method of filling a void between two structural components using the shim. The shim is easy to handle, can easily be laid up to a variety of thicknesses, and is quick to cure (depending on the plastics material used). The three-dimensional fiber layers make the shim highly compressible prior to cure, and provide significant reinforcement to the plastics material of the plies to support compressive stresses in the shim post cure.
Abstract:
An electronic device may have electronic components enclosed within a plastic housing. The plastic housing may include housing members that are joined using heat activated thermoset polymer film. The heat activated thermoset polymer film may be heated using a metal structure such as a strip of metal that is placed along a joint between the housing members. The temperature of the metal strip and associated layers of the thermoset polymer film may be raised by applying current to the metal strip using an external tool or the electronic components within the housing. Heat activated thermoset polymer film may be heated using a reactive multilayer metal foil. Heat sink layers of metal may be interposed between the reactive multilayer metal foil and the thermoset polymer film. A heated metal ring or a heated edge portion of a plastic housing member may also be used to heat the thermoset polymer film.
Abstract:
The invention concerns a method of connecting a first material to a second material by means of a heat-activatable adhesive material (8) in aircraft construction, wherein the adhesive material (8) is arranged between the first material and the second material and an induction heat which is adequate to activate the adhesive material (8) is generated. The first material and/or the second material and/or the adhesive material (8) have an induction heat-generating means. The induction heat-generating means is a non-woven metallic mesh and/or the induction heat-generating means (53) has an amount of carbon fibers for induction heat generation. The invention further concerns an apparatus comprising a first material and a second material, wherein the first material and the second material have a connection which can be produced by a heat-activatable adhesive material arranged between the first material and the second material, in accordance with the method in accordance with the invention.
Abstract:
A method of repairing a composite component having a damaged area including: laying a composite patch over the damaged area; activating the shape memory polymer resin to easily and quickly mold said patch to said damaged area; deactivating said shape memory polymer so that said composite patch retains the molded shape; and bonding said composite patch to said damaged part.
Abstract:
Fluid flow conduits (14a, 14b) and apparatus (40) and methods for joining the conduits (14a, 14b), preferably in a sterile manner, are disclosed. Each conduit (14, 14b) has a polymeric open end that is sealed by a sealing member (26a, 26b) that may include a heating element (28). The polymeric end material is melted, the sealing members (26a, 26b) are moved to expose the melted open ends of the conduits (14a, 14b) and the ends are brought together to form a fused or welded connection (12) between the conduits (14a, 14b).
Abstract:
In the case of a method for connecting a fibre composite component to a structural component of an aircraft and spacecraft, a metal foil is provided as a transverse reinforcement element between the fibre composite component and the structural component. It is formed with at least one anchoring portion which protrudes from the surface facing the fibre composite component and is inserted between the fibre composite component and the structural component. A corresponding arrangement is produced in accordance with this method.
Abstract:
The using of carbon nanotubes to produce a thin film or buckypaper, hereafter referred to as carbon nanotube membrane, which is soaked with epoxy resin or a carbon nanotube-epoxy resin composite adhesive, and then placed between the joining edges of components, where after an electric current is passed through to heat up the carbon nanotube membrane. This leads to the curing temperature of the epoxy resin or carbon nanotube-epoxy resin composite adhesive, thereby hardening the epoxy resin or carbon nanotube-epoxy resin composite adhesive to achieve bonding. This invention utilizes simple equipment, and the method of an electric current passing through for heating, which can rapidly and uniformly heat the epoxy resin or carbon nanotube-epoxy resin composite adhesive, resulting in hardening and bonding. This method is not affected by the environment, and greatly reduces the time and resources required to harden the epoxy resin, and achieves a stronger effect additionally.
Abstract:
A method for making hard cigarette packets comprises a plurality of folding steps performed on blanks and a plurality of fixing steps performed by sealing predetermined areas of the blanks. In those areas, the blanks are furnished with strips, comprising a layer of electrically conductive metallic material which is made to fuse at least partly by passing it through an electromagnetic field or by passing an electrostatic charge or an electric current through it.
Abstract:
Disclosed herein is a pipe for transporting fluids such as oil or gas, said pipe comprising an inner carrier pipe, with an inner coating and a casing characterised in that said inner coating and said casing are sealed by integration between the material of the inner coating and the material of the casing as a result of a change of the molecular state of the materials in the area which is to be integrated. Hereby a strong sealing between the casing and the inner coating is obtained, which allows for an effective encapsulation of e.g. insulation material placed in between the casing and the inner coating. The invention further relates to a method for sealing an inner coating and a casing in a pipe for transporting fluids such as oil or gas.
Abstract:
A method of repairing a composite component having a damaged area including: laying a composite patch over the damaged area; activating the shape memory polymer resin to easily and quickly mold said patch to said damaged area; deactivating said shape memory polymer so that said composite patch retains the molded shape; and bonding said composite patch to said damaged part.