摘要:
A cascade for a jet engine thrust reverser is fabricated by co-consolidating pre-consolidated thermoplastic strongbacks and vanes. The strongbacks are reinforced with continuous fibers, and the vanes are reinforced with discontinuous fibers.
摘要:
Sealed connection between an elastomeric or synthetic polymer flexible pipe or hose and a metallic coupling member. The coupling member surrounds an armor layer at a free end of the flexible pipe or hose. A sealing area is defined by a recessed portion of the pipe coupling into which a sealing material is introduced. An inner liner layer thereof may extend into the sealing area where it is bonded to the sealing material. The sealing material and the inner liner layer may each include a semi-crystalline thermoplastic material. A reinforcement material may be provided in the inner liner layer. In one embodiment the sealing material is injected into the sealing area. In another embodiment the sealing material is provided in the form of meltable ring which fits into the sealing area before fitting of the coupling member, and is activated by an induction heater to effect the sealed connection.
摘要:
A composite sandwich shell edge joint includes an outboard buildup pad, an inboard buildup pad spaced-apart and adjacent to the outboard buildup pad, an outboard face sheet extending from the outboard buildup pad, an inboard face sheet extending from the inboard buildup pad, bridging plies connecting the outboard buildup pad and the inboard buildup pad and at least one barrel nut installed in the buildup pads.
摘要:
In one embodiment a method to form a composite part comprises joining a first structural element and a second element to form a fillet at an intersection of the first structural element and the second element, positioning an inflatable radius filler in the fillet, positioning the composite part in a vacuum chamber, venting the inflatable radius filler to an environment external to vacuum chamber, drawing a vacuum in the vacuum chamber, and curing the composite part. Other embodiments may be described.
摘要:
A stiffened panel and method for producing such a panel comprising a laminated skin extending in two directions, made of a resin and a continuous fibers reinforcement. A first stiffener in the form of a beam is made of a resin with continuous fibers reinforcement and extends on a first side of the laminated skin in a first direction. A second stiffener in the form of a beam is made of a resin with continuous fibers reinforcement and extends on a second side of the laminated skin in a second direction. The resins which make up the skin and the stiffeners are thermoplastic in nature and the stiffeners are closely joined to the skin by welding.
摘要:
A welding device includes a compressor configured to compress a welding part and its adjoining surfaces of thermoplastic resin articles (2a, 2b) in directions perpendicular to the axis of a core (1), and a heater, and is configured such that: the surface of the welding part of the thermoplastic resin articles is compressed with a predetermined pressure by the compressor, the compression of the thermoplastic resin articles is then continued to extend a compressed region along the axis of the core without changing a relative position between the compressor in the compressed region and the surface of the welding part of the thermoplastic resin articles, the welding part of the thermoplastic resin articles is heated and welded by the heater, and after the welding, the pressure applied by the compressor is lowered to stop the compression of the thermoplastic resin articles such that the thermoplastic resin articles fitted on the core can be taken out of the welding device.
摘要:
A stiffened panel and method for producing such a panel comprising a laminated skin extending in two directions, made of a resin and a continuous fibers reinforcement. A first stiffener in the form of a beam is made of a resin with continuous fibers reinforcement and extends on a first side of the laminated skin in a first direction. A second stiffener in the form of a beam is made of a resin with continuous fibers reinforcement and extends on a second side of the laminated skin in a second direction. The resins which make up the skin and the stiffeners are thermoplastic in nature and the stiffeners are closely joined to the skin by welding.
摘要:
A method of making a composite blade that is attachable to a rotating shaft using a conventional metal blade attachment. A blade is formed from a composite material with a blade root at one end thereof. A metallic member having an external shape conforming to a conventional metal blade root is shaped with an interior cavity having an opening for receipt of the blade root. Before the composite material is fully cured, a bladder is formed into or is inserted into an end of the blade root and inflated, thereby forcing the composite material into intimate contact with the interior cavity of the metallic member, thereby ensuring a fret-free interface upon final curing of the composite material. The interior cavity of the metallic member may be shaped or surfaced to improve the load carrying capability there between.
摘要:
The invention relates to electrofusion fittings. Hitherto, electrical leads (13) to electrofusion fittings have been passed through the gap between adjacent metal pipe length (1) ends, that are subsequently welded. The electrical leads remain in the weld metal as a contaminant that can be harmful to the integrity of the weld, and the objection of the invention is to eliminate the problem. The objection is met by a construction of electrofusion fitting comprising a tubular length of thermoplastic material (3), of an outer diameter commensurate with the inner diameter of the ends of a compatible thermoplastic material lining of adjacent lengths of metal pipe (1), there being at each end of the fitting at least two heater coils on or in close proximity to the outer surface of the fitting, electrical leads from the heater coils extending through the fitting to emerge at the inner surface of the tubular length, for connection to a source of electrical power.
摘要:
A method and apparatus for forming and consolidating organic matrix composites. An organic matrix composite panel comprising laid-up prepregs is placed between sheets of a susceptor material that is susceptible to inductive heating to form a workpiece. The resulting workpiece is placed within upper and lower dies formed of a material that is not susceptible to inductive heating. An induction coil embedded within the dies is energized and inductively heats the susceptor sheets surrounding the panel. The sheets in turn conductively heat the organic matrix composite panel. A pressure zone between the workpiece and one of the dies is pressurized to form the workpiece to the contour of a forming surface on one of the dies. The pressure in the pressure zone is maintained on the workpiece until the organic matrix composite panel is fully consolidated and formed.