A method for manufacturing composite parts includes positioning a plurality of composite layers on an application surface formed by a plurality of tooling members and filler members on a mandrel. A part formation aid is disposed on the composite layers above each tooling member. The filler members a
A method for manufacturing composite parts includes positioning a plurality of composite layers on an application surface formed by a plurality of tooling members and filler members on a mandrel. A part formation aid is disposed on the composite layers above each tooling member. The filler members are then removed, and the composite layers slit over the recesses. The mandrel, the tooling members, the composite layers, and the part formation aids are placed in a vacuum bag. As the bag is evacuated, each part formation aid forces the side edge of the composite layers formed by the slit around the respective tooling member, thereby forming a composite part with a desired shape, thickness, and density. In an alternate embodiment, a flanged composite panel is formed around a rectangular mandrel after positioning composite layers on an outer surface of the mandrel and an outer surface of a filler member disposed on one end of the mandrel. After removing the filler member, the flanged panel is formed and partially cured by vacuum bagging. A plurality of tooling members and filler members are then placed on the flanged panel to form an application surface. Composite layers are positioned on the application surface, and then the filler members are removed. Vacuum bagging is used to produce a plurality of stiffeners around the tooling members and directly adjacent to the flanged panel. The stiffeners and flanged panel are co-cured to produce a single and integral part.
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A method for manufacturing composite parts includes positioning a plurality of composite layers on an application surface formed by a plurality of tooling members and filler members on a mandrel. A part formation aid is disposed on the composite layers above each tooling member. The filler members a
A method for manufacturing composite parts includes positioning a plurality of composite layers on an application surface formed by a plurality of tooling members and filler members on a mandrel. A part formation aid is disposed on the composite layers above each tooling member. The filler members are then removed, and the composite layers slit over the recesses. The mandrel, the tooling members, the composite layers, and the part formation aids are placed in a vacuum bag. As the bag is evacuated, each part formation aid forces the side edge of the composite layers formed by the slit around the respective tooling member, thereby forming a composite part with a desired shape, thickness, and density. In an alternate embodiment, a flanged composite panel is formed around a rectangular mandrel after positioning composite layers on an outer surface of the mandrel and an outer surface of a filler member disposed on one end of the mandrel. After removing the filler member, the flanged panel is formed and partially cured by vacuum bagging. A plurality of tooling members and filler members are then placed on the flanged panel to form an application surface. Composite layers are positioned on the application surface, and then the filler members are removed. Vacuum bagging is used to produce a plurality of stiffeners around the tooling members and directly adjacent to the flanged panel. The stiffeners and flanged panel are co-cured to produce a single and integral part. also united with the resin hardened on the mold surface of the structure mold. 3. A method of manufacturing a ribbed structure according to claim 2, wherein each of the plurality of rib molds is annular. 4. A method of manufacturing a ribbed structure according to claim 2, wherein the hardening of the resins is performed by heating the resins. 5. A method of manufacturing a ribbed structure according to claim 1, wherein in the hardening of the resins, one of an autoclave molding and an RTM molding is used. 6. A method of manufacturing a ribbed structure according to claim 5, wherein when the autoclave molding is used, the non-hardened resin containing the reinforcing fibers is provided as a prepreg. 7. A method of manufacturing a ribbed structure according to claim 5, wherein when the RTM molding is used, the non-hardened resin and the reinforcing fibers are separately provided in which the reinforcing fibers are firstly provided and then the non-hardened resin is provided to impregnate the reinforcing fibers with the resin. 8. A method of manufacturing a ribbed structure according to claim 1, wherein; before the rib mold on which the non-hardened resin containing the reinforcing fibers is laminated is placed in the rib formation groove formed in the mold surface of the structure mold, non-hardened resin containing reinforcing fibers is placed on a bottom portion of an inner surface of the-rib formation groove; and in the hardening of the resins, the resin hardened on the bottom portion of the inner surface of the rib formation groove, the resin hardened on the rib mold and the resin laminated on the mold surface of the structure mold to cover the resin on the rib mold in the rib formation groove and hardened are united with each other. 9. A method of manufacturing a ribbed structure according to claim 1, wherein: before the rib mold on which the non-hardened resin containing the reinforcing fibers is laminated is placed in the rib formation groove formed in the mold surface of the structure mold, non-hardened resin containing reinforcing fibers is laminated on the mold surface of the structure mold and the inner surface of the rib formation groove; after the rib mold on which the non-hardened resin containing the reinforcing fibers is laminated is placed in the rib formation groove formed in the mold surface of the structure mold, non-hardened resin containing reinforcing fibers is further laminated on the non-hardened resin containing the reinforcing fibers which is laminated on the mold surface of the structure mold, in such a way as to cover the rib mold which is placed in the rib formation groove formed in the mold surface of the structure mold, and on which the non-hardened resin containing the reinforcing fibers is laminated; and in the hardening of the resins, the resin hardened on the mold surface of the structure mold and the inner surface of the rib formation groove, the resin hardened on the rib mold, and the resin, which is laminated and hardened on the mold surface of the structure mold in such a way as to cover the resin on the rib mold in the rib formation groove, are united as a single resin. 10. A method of manufacturing a rib structure according to claim 9, wherein: after the non-hardened resin containing the reinforcing fibers is laminated on the mold surface of the structure mold and the inner surface of the rib formation groove, and before the rib mold on which the non-hardened resin containing the reinforcing fibers is laminated is placed in the rib formation groove formed in the mold surface of the structure mold, non-hardened resin containing reinforcing fibers is provided on a bottom portion of the inner surface of the rib formation groove; in the hardening of the resins, the resin hardened on the mold surface of the structure mold and on the inner surface of the formation groove, the resin hardened on the bottom portion of the inner surface of the rib formation groove, the resin h
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이 특허에 인용된 특허 (12)
McKague ; Jr. Elbert Lee ; Cox Ronald Kendall ; Phillips John Edward, Composite metallic tension fitting.
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Seal Ellis C. (Bay St. Louis MS) Ferrell Michael G. (New Orleans LA) Bodepudi Venu P. (New Orleans LA) Biggs ; Jr. Robert W. (Slidell LA), Method for forming composite structures.
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