Abstract: A manufacturing device manufactures a composite material structure by impregnating resin into a preform formed in a predetermined shape. The manufacturing device includes: a caul plate defining a space inside and covering the preform in the space; a supply part that supplies resin to the preform; a discharge part that discharges a gas from the space through a discharge hole in the caul plate; and a pressure intensifier that is provided in the space and between the caul plate and the preform and pressurizes the preform by a gas being discharged through the discharge part. The pressure intensifier has a web part facing surface facing the preform and a caul plate facing surface facing the caul plate, and through holes between the web part facing surface and the caul plate facing surface are in the pressure intensifier.

Abstract: A fiber-reinforced composite material molding apparatus includes a molding die, a bagging film that seals a fiber base material in the molding die to form a hermetically sealed space, an intake line that depressurizes the hermetically sealed space, and a resin injection line that injects a resin material into the fiber base material. The molding die includes a main body portion including a main groove that extends along a longitudinal direction and is connected to the resin injection line, lateral grooves that are formed at a plurality of positions in the longitudinal direction and extend along a width direction, and a step portion that extends along the longitudinal direction and is disposed between the main groove and the lateral grooves, and a lid portion that extends along the longitudinal direction, is disposed being in contact with the step portion to cover the main groove, and forms a part of a molding surface.

Abstract: Provided is a fiber-reinforced composite material shaping device including: core units; a shaping mold having a recessed portion for accommodating the core units; a seal member for sealing a fiber base material in the shaping mold to form a sealed space; an aspiration unit for reducing the pressure in the sealed space; a resin injection unit for injecting a resin material into the sealed space; and moving mechanisms for separating a first shaping surface away from the fiber base material, which contains a resin material that has been shaped by the first shaping surface and cured. Formed on the first shaping surface is a first groove section extending in a predetermined direction. The moving mechanisms move the core units along a predetermined direction in which the first groove section extends, while maintaining a state in which the first shaping surface is in contact with the fiber base material.

Abstract: A method for producing a composite material in which a first fabric and a second fabric made from a fiber material are impregnated with a thermosetting resin and integrally molded, wherein a resin flow path through which thermosetting resin flows is provided between the first fabric and the second fabric, and the first fabric and the second fabric are impregnated with thermosetting resin from the resin flow path as well as being impregnated with thermosetting resin from the surface.

Abstract: Provided is a forming device including: a lower die; an upper die for forming a laminated body along the surface shape of the lower die by pressing the laminated body against the lower die; a pushing force generating mechanism that generates pushing force for pressing the upper die against the lower die; and a control unit that controls the pushing force generating mechanism, the upper die has a plurality of forming members aligned in the longitudinal direction, the pushing force generating mechanism has a plurality of pushing force generating units connected to the plurality of forming members and configured to generate pushing force for pressing the forming members against the lower die, and the control unit controls the plurality of pushing force generating units so as to press a pair of forming members arranged adjacent in the longitudinal direction toward the lower die at different timings from each other.

Abstract: A composite material molding jig for molding a long member made of a fiber base material and a resin on a plate member includes: a first member that is made of a material having a thermal expansion coefficient equivalent to a thermal expansion coefficient of the long member, internally includes a space serving as a mold of the long member, and has an outer surface formed flat in a longitudinal direction; and a second member that is made of a material lighter than the material of the first member, internally includes a space shaped to contain the first member, and has an inner surface formed flat in the longitudinal direction, wherein the fiber base material is placed in the space inside the first member, and the first member is placed in the space inside the second member for molding the long member.

Abstract: A molding jig for molding a laminate, which includes reinforced fiber sheets laminated on each other, extends in the length direction, and has a cross-sectional shape having a curved portion in a cross section obtained by cutting the laminate on a plane orthogonal to the length direction, into a three-dimensional shape having a bent portion in the length direction. The molding jig includes a female die for forming the bent portion, a male die for engaging with the female die with the laminate therebetween for forming the bent portion, and a stretchable supporting member between the female die and the laminate. The laminate comes in contact with the male die on both length-direction sides of the molded bent portion, and the supporting member is over a region including the female-side molding surface.

Abstract: A method for molding a composite material obtained by laying up a fiber-reinforced base material includes: disposing a lay-up in which the fiber-reinforced base material is laid up, on a molding surface of a molding jig; covering the lay-up with a film to hermetically seal the lay-up; supplying resin toward the lay-up from a resin supplying unit; sucking atmosphere in the film from a degassing waterproof unit while blocking the resin in the film from passing to impregnate the lay-up with the resin; and discharging the resin in the film from a resin discharging unit after the lay-up is impregnated with the resin. The resin supplying unit is provided on the film side. The degassing waterproof unit is provided on the molding surface side and along one direction in a plane perpendicular to a laying-up direction of the lay-up. The resin discharging unit is provided at the film side.

Abstract: An object is to provide a device and method for manufacturing a fiber-reinforced plastic molded article, whereby two members can be accurately positioned with respect to each other upon integral molding of the members via a VaRTM method. A device for manufacturing a fiber-reinforced plastic molded article includes a skin mold in which a skin, which is a cured fiber-reinforced composite member, is mounted; a stringer mold that is configured to accommodate a stringer, which is a fabric to be joined to the skin; and a folded plate that is configured to accommodate the stringer mold and includes a positioning portion for positioning with respect to a positioning portion provided on the skin.

Abstract: A method for molding a laminated body includes laminating a reinforced fiber base material on a molding surface of a molding jig to form a laminated body; attaching a pulling jig to a third lamination portion of the laminated body; forming a protrusive curvature part and a recessed curvature part in the laminated body by curving the laminated body along a protrusive curvature surface and a recessed curvature surface formed on the molding surface while pulling the end of the laminated body with the pulling jig; and densifying the laminated body by heating the curved laminated body while pressurizing the same. The reinforced fiber base material is laminated so that at least a part of a gap between layers of the reinforced fiber base material becomes a non-adhered state in a portion from the protrusive curvature part to the third lamination portion formed in the laminated body.

Abstract: A method for manufacturing a composite material includes placing a netlike sheet material, through which a resin composition permeates, on reinforcing fiber substrates disposed on a forming die. The method includes covering the reinforcing fiber substrates disposed on the forming die and the bag surface-smoothing sheet with a bag film to form a sealed forming space between the bag film and the forming die. The method includes infusing a resin composition into the forming space to impregnate the reinforcing fiber substrates. The method includes curing the resin composition impregnated in the reinforcing fiber substrates. Warp yarns and weft yarns are disposed in a lattice pattern and, after placing the bag surface-smoothing sheet on the reinforcing fiber substrates so that the warp yarns and the weft yarns form acute angles with respect to corners of the reinforcing fiber substrates, the bag surface-smoothing sheet projecting from the reinforcing fiber substrates is bent.

Abstract: A method for producing a fiber-reinforced resin molded article includes disposing a suction medium, a resin barrier aeration medium and a fiber base material in a cavity such that the suction medium is disposed between an end part of the fiber base material and a mold, and the resin barrier aeration medium is disposed between the suction medium and the end part of the fiber base material. The method further includes: impregnating the fiber base material with a resin by injecting the resin from an injection part, while reducing a pressure in the cavity by suction from a suction part; curing the resin with which the fiber base material is impregnated; and releasing a fiber-reinforced resin in which the fiber base material and the resin are integrated.

Abstract: A method for molding a composite material in which a curved corner is formed between two planes by using a molding jig includes: shaping a laminated body in such a manner that a thickness of the laminated body is decreased from an outer side toward an inner side of the corner, by using the molding jig in which the angle formed by the two planes is a first bending angle, the laminated body including fiber sheets laminated so as to have the corner curved at the first bending angle; and shaping the laminated body in such a manner that the thickness is decreased from the outer side toward the inner side by curving the corner so as to form a second bending angle, by using the molding jig in which the angle formed by the two planes is the second bending angle smaller than the first bending angle.

Abstract: A method for producing a composite material in which a first fabric and a second fabric made from a fiber material are impregnated with a thermosetting resin and integrally molded, wherein a resin flow path through which thermosetting resin flows is provided between the first fabric and the second fabric, and the first fabric and the second fabric are impregnated with thermosetting resin from the resin flow path as well as being impregnated with thermosetting resin from the surface.

Abstract: It is provided a fiber-reinforced-plastic producing device, a movable stage, a shaped fabric producing method, and a fiber-reinforced-plastic producing method, with which when a fabric is bent in a resin transfer molding method, wrinkles can be prevented from being formed in the vicinity of the bent portion. The fiber-reinforced-plastic producing device includes a molding die having a first placement surface on which a fabric is placed, and a formation surface having a predetermined angle with respect to the first placement surface; and a movable stage having a second placement surface on which an end section of the fabric is placed, and located adjacent to the molding die, wherein the movable stage is configured so as to be movable below the first placement surface after the second placement surface forms a continuous plane with the first placement surface and is inclined with respect to the first placement surface.

Abstract: A method for molding composite material such as a spar formed with a curved corner part is provided with: a first shaping step of shaping a laminate so that the board thickness of the laminate is reduced from the outside of the corner part toward the inside thereof, the laminate having the corner part curved at a first bending angle and comprising fiber sheets laminated to each other; and a second shaping step of curving the corner part of the laminate to form a second bending angle smaller than the first bending angle, and shaping the laminate so that the board thickness of the laminate is reduced from the inside of the corner part toward the outside thereof.

Abstract: A composite material molding jig for molding a long member made of a fiber base material and a resin on a plate member includes: a first member that is made of a material having a thermal expansion coefficient equivalent to a thermal expansion coefficient of the long member, internally includes a space serving as a mold of the long member, and has an outer surface formed flat in a longitudinal direction; and a second member that is made of a material lighter than the material of the first member, internally includes a space shaped to contain the first member, and has an inner surface formed flat in the longitudinal direction, wherein the fiber base material is placed in the space inside the first member, and the first member is placed in the space inside the second member for molding the long member.

Abstract: A method of molding composite materials including shaping a laminate having fiber sheets laminated over one another, by bending the laminate in an X-direction and a Y-direction, in a three-dimensional orthogonal coordinate system. The method further includes mounting the laminate that has been shaped, onto a mold material deformed in a Z-direction, impregnating a resin material into the laminate while adjusting an amount of the resin material filled in, and molding the composite materials that have cured such that the composite materials are shaped to have a first inclined surface inclined at a first inclination angle with respect to a reference plane in the Z-direction. The mold material has a first inclination molding surface that molds the first inclined surface, and a second inclination molding surface that molds a surface of the composite materials into a second inclined surface having a second inclination angle smaller than the first inclination angle.

Abstract: In a molding method using a VaRTM process in which a workpiece is impregnated with resin in a vacuum, the flow channel resistance or the thickness of which is not constant, an air-permeable sheet only permeable to gas and not permeable to resin (liquid) is arranged at the bottom surface of the workpiece to cover the total length of the workpiece in a direction in which the flow channel resistance or the thickness of the workpiece varies, to impregnate the resin.

Abstract: A method for molding a composite material obtained by laying up a fiber-reinforced base material includes: disposing a lay-up in which the fiber-reinforced base material is laid up, on a molding surface of a molding jig; covering the lay-up with a film to hermetically seal the lay-up; supplying resin toward the lay-up from a resin supplying unit; sucking atmosphere in the film from a degassing waterproof unit while blocking the resin in the film from passing to impregnate the lay-up with the resin; and discharging the resin in the film from a resin discharging unit after the lay-up is impregnated with the resin. The resin supplying unit is provided on the film side. The degassing waterproof unit is provided on the molding surface side and along one direction in a plane perpendicular to a laying-up direction of the lay-up. The resin discharging unit is provided at the film side.