摘要:
A method of producing a bicycle rim including, positioning a first quantity of woven fiber strips having a first width and a first length and a second quantity of strips of said woven fibers having a shape different from the first shape to form a first laminated band from the first quantity and the second quantity of strips. A second narrower laminated band is produced. The first band is re-shaped to a V-shaped band before the first band is inserted along the periphery of a mold interior. A core is positioned on the first band and the second band is positioned on the first band. Rim well rings are positioned from outside on the second band, to abut the sides of the second band. A spreader ring is inserted between the rings to join the material near the upper rim flanks and the rim flanges.
摘要:
The invention concerns a method for producing structures, whereof the geometric shape can be broken down into triangles, and which provide without any further treatment the structure with integrated airtightness, the double airtight partition enabling a coolant to be circulated or a relative depression to be generated and hence a more efficient thermal insulation, and also facilitating mounting with above all no need for a particular work site or complex and expensive foundations even on broken terrain. The method consists in prefabricating by moulding followed by assembling single-unit triangular structures, whereof the inside of lateral parts (5) is hollow through use of profiled sections, whereof the tops (6) contain no joints as a result of a plastic coating. The tops (6) comprise defined arc-shaped indentations (7), whereof the outer surfaces on either side comprise grooves (8), whereof the inner surfaces include a shoulder (9) comprising a groove (10) on both its surfaces, whereof the sides can have an extra thickness (11) at a specific angle, which has on one of the sides at least three openings (12) corresponding to recesses provided in the profiled section. Said structures are prefabricated in series by coating with plastic material, in a mould, a metal profiled section. The method is particularly designed for producing domes, greenhouses and submarine bells.
摘要:
A lightweight composite fairing bar (14) for use in fabricating a composite component (16) of an aircraft. The fairing bar (14) includes a core (18) and an elongated outer shell (20) surrounding the core (18). The outer shell (20) is comprised of a laminate material, and the core (18) is comprised of epoxy syntactic foam having a lower density than that of the laminate material. The outer shell (20) is configured for supporting the composite component (16) during the manufacture of the same.
摘要:
A shutter assembly having a foam insert or core enveloped by a cementitious or urethane-based shell. The shell can also be provided with an optional hanger member that allows the shutter assembly to be mounted to a dwelling via a bracket affixed to an exterior wall surface thereof. The assembly can be molded from a cementitious slurry including gypsum cement and water, or alternatively, from a two part urethane filled with lightweight fly ash. An appropriate amount of the slurry or urethane-based material is added onto a bottom mold surface portion to a desired depth. If the hanger member is to be used, it is placed onto the bottom mold surface portion prior to the introduction of the slurry or urethane-based material. The foam insert or core is placed atop the slurry or urethane-based material in a desired orientation, whereupon the top mold surface portion is closed over the bottom mold surface portion. After curing, the shutter assembly is removed from the mold and is ready for immediate use and/or further processing.
摘要:
There is provided a hockey stick blade and a method of making thereof, wherein the blade is made in a composite material comprising a core formed of light weight material, such as foam, and a fiber braid jacket or tubular prepreg cloth, the core being partially hollow to define longitudinal cavities inside the blade assembly.
摘要:
A stiff panel (1) comprises a skin (2) and at least one stiffener (3) of composite material on said skin. Free surface (311) of web (31) of stiffener (3) on the stiff panel according to the invention comprises a deformable core (33) and a covering (34) which covers core (33) and joins said core with structural part (35) of web (31). The width of core (33) is equal to or greater than the width of structural part (35) of web (31) of stiffener (3), depending on the shock energy against which panel (1) must be protected.
摘要:
A method for fabricating a blade using a mold having a shape corresponding to a predetermined finished shape of at least a portion of the blade. The method includes stacking a plurality of layers of a material in the mold, stacking at least one component with the stack of the plurality of layers, wherein the component is a composite comprising a cured resin and at least one layer of fiber, and laminating the stack of the plurality of layers and the component.
摘要:
A method for manufacturing a structurally integrated antenna into a fiber composite carrier structure of a vehicle includes the following method steps: arranging an antenna preform on a carrier system primary structure which is the form of a fibrous semifinished product, whereby the antenna preform comprises one or more flexible conductive antenna elements arranged in a layer; and curing the component by means of a temperature and/or pressure treatment.
摘要:
A machine and method for moulding a composite of complex nodal structure includes laying down under CNC a reinforcement (38) of constant cross-section repeatedly into and along channels (26) of a mold (24) and through nodes of the structure, closing the mold, impregnating it with resin and curing the resin.
摘要:
A hockey stick having a composite blade and a shaft is disclosed. The composite blade includes a heel section that is recessed relative to the front and back faces of the blade. The recessed heel section is configured to be received by a hockey stick shaft or an adapter member configured to connect the blade to the shaft. The composite blade preferably comprise a foam inner core overlaid preferably with substantially continuous fibers disposed in a matrix material and may include an internal bridge structure extending from one side of the blade to the other. The blade may also be preferably comprised of a core comprising non-continuous fibers disposed within a matrix material. In another aspect, processes for manufacturing the previously described hockey stick blade(s) are described.