Abstract: A method for manufacturing panel assemblies is provided. The method includes, placing an outer surface of a panel on a mold. The panel includes a carbon fiber. The method further includes placing a channel on an inner surface of the panel. The channel includes a resin. The inner surface opposes the outer surface. The method further includes welding the channel onto the panel by heating the carbon fiber of the panel and placing a rib in the channel. The rib includes a carbon fiber. The method further include welding the rib onto the channel by heating the carbon fiber of the rib.

Abstract: A method for producing a composite material joint body includes steps of: bonding a plurality of composite materials, forming a hollow body including at least a first cell and a second cell adjacent to the first cell, and adjusting a pressure so that a first pressure in the first cell is greater than a second pressure in the second cell. In the step of forming the hollow body, the first cell includes an expansion member pressurizing a first inner surface facing the first cell of a first cell member, and the second cell includes a gas pressurizing a second inner surface facing the second cell of a second cell member, and in the step of adjusting the pressure, the first pressure generated by the expansion member pressurizing the first inner surface is increased as compared with the second pressure generated by the gas pressurizing the second inner surface.

Abstract: Method for producing a composite molded body according to the present disclosure, to form a first and second composite molded bodies by molding the first and second composite materials, respectively. The first and second composite molded bodies comprise joint portions that can be joined to one another. The joint portions are joined together to form a composite material joint body. The first and second composite materials comprise to-be-joined portions corresponding to the joint portions of the first and second composite molded bodies, respectively. In the space sandwiched between the first and second composite materials disposed in the mold, a mandrel, a step of disposing a pressing portion, a step of pressing the pressing portion presses the mandrel against the to-be-joined portion of the second composite material.

Abstract: A method for manufacturing a joined body according to an embodiment of the present disclosure is a method for manufacturing a joined body in which composite materials in which fibers are impregnated with resins are heated and joined to each other. The method includes: a step of aligning the composite material with each of a plurality of molding dies, heating the molding dies, and semi-curing the resins of the composite materials; and a step of joining the composite materials to each other by combining and heating the molding dies with which the composite materials are aligned after semi-curing the resins of the composite materials. The molding dies used when semi-curing the resins of the composite materials and the molding dies used when joining the composite materials to each other are the same.

Abstract: A case having elasticity corresponding to expansion and contraction of a stacked body housed therein and a method for manufacturing the same, a method for inserting the stacked body into the case, and a cell stack using the case are provided. A case configured to house a stacked body includes two opposed contact parts in contact with the stacked body, and two spring structures connecting the two contact parts with each other.

Abstract: A case having elasticity corresponding to expansion and contraction of a stacked body housed therein and a method for manufacturing the same, a method for inserting the stacked body into the case, and a cell stack using the case are provided. A case configured to house a stacked body includes two opposed contact parts in contact with the stacked body, and two spring structures connecting the two contact parts with each other.

Abstract: A first process in which a fiber reinforced base is placed in a cavity of a molding die and then resin is injected into the cavity of the molding die in a state where the molding die is opened by a sum of a distance X1 and a distance at the time of completion of molding; a second process in which the molding die is closed to a state where the molding die is opened by a sum of a distance X2 and the distance at the time of completion of molding while resin in the cavity is being drained; and a third process in which the drain of the resin from the cavity is stopped and then the molding die is closed to the distance at the time of completion of molding while a die clamping pressure is maintained at a predetermined value to cure the resin, are carried out sequentially.

Abstract: There is provided a method of molding a fiber-reinforced plastic hollow part that is capable of molding, with ease and at low costs, a fiber-reinforced plastic hollow part, which has a varying cross-section or a bent portion, in a state in which its weight is sufficiently reduced and in a state where its wall thickness is substantially uniform. A reinforcing fiber (21) and a matrix resin (24) are laminated on the outer circumference of a preformed hollow resin core (10) to obtain a hollow laminate (20). A pressurizing bag (30) is inserted and positioned inside that hollow resin core (10). The hollow laminate (20) is positioned inside a mold (40). Next, heat is applied while pressure is applied to the inside of the pressurizing bag (30) of the hollow laminate (20) positioned inside the mold, thereby integrating the resin and the reinforcing fiber.

Abstract: Provided is a method capable of easily and inexpensively molding a flanged fiber-reinforced resin hollow part with a non-uniform cross-section and a bent portion with a sufficiently reduced weight and substantially uniform thickness. To this end, a hollow laminate (20) is formed by laminating reinforced fibers (21) and matrix resin (24) on the circumference of a coupled body of a preformed hollow resin core (10) and a second core (15). The second core (15) is pulled out from the hollow laminate (20) and a region of the hollow laminate (20), from the second core (15) was pulled out, is pressed into a flange-shaped portion (26). A pressurization bag (30) is inserted into the hollow resin core (10) and it is then disposed within a shaping mold (40). Heat is applied while at the same time applying pressure to the inside of the pressurization bag (30) in the hollow laminate (20) disposed within the shaping mold, whereby the resin and the reinforced fibers are combined, inclusive of the flange-shaped portion (26).

Abstract: A pressure container has an inner shell with a pair of fittings and a reinforcement layer formed around the inner shell, and is configured so that a reinforcement member is attachable to the pair of fittings in a process of forming the reinforcement layer and a functional component which performs a predetermined function is also attachable to the fittings. This can allow the reinforcement member to prevent expanding deformation of the pressure container in production of the pressure container, and can ensure effective use of openings after removal of the reinforcement member.

Abstract: There is provided a component part (1) made up of a tubular skeleton member (1B) that is formed by a structural material-purpose reaction injection molding of a thermoplastic resin reinforced by a continuous fiber and that is enhanced in rigid strength, and projection-and-depression structures (1A, 1C) that cover two end openings of the tubular skeleton member and that are made of a thermoplastic resin that is of the same family as and is highly compatible with the foregoing thermoplastic resin. In the production method for the component part (1), before the thermoplastic resin used in the structural material-purpose reaction injection molding finishes polymerizing, the thermoplastic resin is injected to a mold cavity that surrounds the tubular skeleton member (1B), so that the component part (1) having high rigid strength is efficiently produced.

Abstract: A first process in which a fiber reinforced base is placed in a cavity of a molding die and then resin is injected into the cavity of the molding die in a state where the molding die is opened by a sum of a distance X1 and a distance at the time of completion of molding; a second process in which the molding die is closed to a state where the molding die is opened by a sum of a distance X2 and the distance at the time of completion of molding while resin in the cavity is being drained; and a third process in which the drain of the resin from the cavity is stopped and then the molding die is closed to the distance at the time of completion of molding while a die clamping pressure is maintained at a predetermined value to cure the resin, are carried out sequentially.

Abstract: An object of the present invention is to provide a high-quality fiber reinforced resin member that enables a longitudinal yarn to be laid out, without slipping, around an outer periphery of a mandrel having at least a bent portion, thus allowing both the longitudinal yarn and a diagonal yarn to be evenly laid out, and a method of manufacturing the fiber reinforced resin member, as well as an apparatus manufacturing a fiber fabric for the fiber reinforced resin member. A fiber reinforced resin member 1 includes an elongate fiber fabric formed by braiding a plurality of longitudinal yarns Q, . . . extending in a longitudinal direction of the fiber fabric and a plurality of diagonal yarns P, . . . inclined at a predetermined angle to the longitudinal direction, the fiber fabric being impregnated with resin that is then hardened. The fiber reinforced resin member 1 has at least a bent portion 1?. The longitudinal yarns Q, . . .

Abstract: There is provided a method of molding a fiber-reinforced plastic hollow part that is capable of molding, with ease and at low costs, a fiber-reinforced plastic hollow part, which has a varying cross-section or a bent portion, in a state in which its weight is sufficiently reduced and in a state where its wall thickness is substantially uniform. A reinforcing fiber (21) and a matrix resin (24) are laminated on the outer circumference of a preformed hollow resin core (10) to obtain a hollow laminate (20). A pressurizing bag (30) is inserted and positioned inside that hollow resin core (10). The hollow laminate (20) is positioned inside a mold (40). Next, heat is applied while pressure is applied to the inside of the pressurizing bag (30) of the hollow laminate (20) positioned inside the mold, thereby integrating the resin and the reinforcing fiber.

Abstract: Provided is a method capable of easily and inexpensively molding a flanged fiber-reinforced resin hollow part with a non-uniform cross-section and a bent portion with a sufficiently reduced weight and substantially uniform thickness. To this end, a hollow laminate (20) is formed by laminating reinforced fibers (21) and matrix resin (24) on the circumference of a coupled body of a preformed hollow resin core (10) and a second core (15). The second core (15) is pulled out from the hollow laminate (20) and a region of the hollow laminate (20), from the second core (15) was pulled out, is pressed into a flange-shaped portion (26). A pressurization bag (30) is inserted into the hollow resin core (10) and it is then disposed within a shaping mold (40). Heat is applied while at the same time applying pressure to the inside of the pressurization bag (30) in the hollow laminate (20) disposed within the shaping mold, whereby the resin and the reinforced fibers are combined, inclusive of the flange-shaped portion (26).

Abstract: A filament winding apparatus for rotating in a predetermined direction a core material that is supported by a supporting portion, and for winding around the core material, an elongated material which has flexibility and which is impregnated with an unhardened synthetic resin material, the filament winding apparatus includes a plurality of feeding portions for feeding a plurality of elongated materials, and a plurality of guiding mechanisms which are positioned around the core material so as to correspond to the plurality of elongated materials that are drawn from the plurality of feeding portions, through which the corresponding elongated materials are passed, wherein at least one of the supporting portion and the plurality of guiding mechanisms are movable in a rotation axial direction, from a winding operation range in which the elongated materials can be guided by the guiding mechanisms to winding positions at which the elongated materials are wound around the core material, to an attachable/detachable pos

Abstract: An object of the present invention is to provide a high-quality fiber reinforced resin member that enables a longitudinal yarn to be laid out, without slipping, around an outer periphery of a mandrel having at least a bent portion, thus allowing both the longitudinal yarn and a diagonal yarn to be evenly laid out, and a method of manufacturing the fiber reinforced resin member, as well as an apparatus manufacturing a fiber fabric for the fiber reinforced resin member. A fiber reinforced resin member 1 includes an elongate fiber fabric formed by braiding a plurality of longitudinal yarns Q, . . . extending in a longitudinal direction of the fiber fabric and a plurality of diagonal yarns P, . . . inclined at a predetermined angle to the longitudinal direction, the fiber fabric being impregnated with resin that is then hardened. The fiber reinforced resin member 1 has at least a bent portion 1?. The longitudinal yarns Q, . . .

Abstract: An opening section of a tank projects to the inside of the tank. In the inwardly projecting section, a fitting projects to the inside of the tank, surrounding a substantially cylindrical column-like valve. Also, an inner circumferential wall projects to the inside of the tank so as to surround the fitting. Further, a metal ring is provided surrounding the inner circumferential wall, and a metal nut is attached from the end in the direction of the projection of the inner circumferential wall. The metal ring and the metal nut function as support members for supporting the inner circumferential wall and increase the quality of the seal between the inner circumferential wall and the fitting.

Abstract: A pressure container has an inner shell with a pair of fittings and a reinforcement layer formed around the inner shell, and is configured so that a reinforcement member is attachable to the pair of fittings in a process of forming the reinforcement layer and a functional component which performs a predetermined function is also attachable to the fittings. This can allow the reinforcement member to prevent expanding deformation of the pressure container in production of the pressure container, and can ensure effective use of openings after removal of the reinforcement member.

Abstract: A filament winding apparatus for rotating in a predetermined direction a core material that is supported by a supporting portion, and for winding around the core material, an elongated material which has flexibility and which is impregnated with an unhardened synthetic resin material, the filament winding apparatus includes a plurality of feeding portions for feeding a plurality of elongated materials, and a plurality of guiding mechanisms which are positioned around the core material so as to correspond to the plurality of elongated materials that are drawn from the plurality of feeding portions, through which the corresponding elongated materials are passed, wherein at least one of the supporting portion and the plurality of guiding mechanisms are movable in a rotation axial direction, from a winding operation range in which the elongated materials can be guided by the guiding mechanisms to winding positions at which the elongated materials are wound around the core material, to an attachable/detachable pos