Abstract: A ferrule pin clamp used for a ferrule into which a guide pin is inserted includes: a main body including a pin holder that holds a groove portion of the guide pin. The pin holder includes a pair of arcs. A diameter of the pair of arcs: is smaller than a maximum shaft diameter of the guide pin, and is larger than a shaft diameter of the groove portion of the guide pin.

Abstract: An optical fiber pitch conversion jig for converting a pitch among optical fibers by inserting the optical fibers from a first end of the optical fiber pitch conversion jig and making the optical fibers protrude from a second end of the optical fiber pitch conversion jig, the optical fiber pitch conversion jig includes: a groove portion including grooves extending from the first end to the second end, a first linear part on a side closer to the first end and in which a pitch among the grooves is a first pitch, and a pitch change part that is continuous with the first linear part and in which the pitch widens to a second pitch larger than the first pitch. In the pitch change part, at least one of the grooves is curved.

Abstract: An optical connector includes: an optical fiber; a ferrule with an insertion hole that accommodates the optical fiber; a housing that accommodates the ferrule and that includes two lock holes formed therein; two springs that sandwich the optical fiber therebetween, and that bias the ferrule in a forward direction of the optical connector; and a support portion that supports the two springs from a rear direction of the optical connector. The support portion includes a first divided member that is combined with a second divided member and two latch portions locked in the two lock holes. When the insertion hole extends is the front and the rear directions, the two springs are disposed along left and right directions of the optical connector, and a vertical direction is orthogonal to the front, rear, right, and left directions, the two latch portions are disposed side by side in the vertical direction.

Abstract: A method of producing fiber-reinforced plastic uses a molding die which includes a resin filling port at one end; a resin suction port at the other end; a laminate body of a plurality of laminated fiber-reinforced base materials and housed in the inner space of the molding die; a resin diffusion medium extending from the resin filling port and provided on opposite surfaces of the laminate body to supply resin onto opposite surfaces of the laminate body from the resin filling port; and a resin suction medium extending from the resin suction port and provided along a side surface of the laminate body on the suction port side to contact the side surface or to have a gap from the side surface, in a state that gas or resin can be suctioned from the laminate body so that the gas or resin can be moved from the laminate body toward the resin suction port.

Abstract: A preform for the molding of a fiber-reinforced resin beam, the preform comprising: a reinforcing-fiber beam which has been formed from a reinforcing-fiber base made up of many reinforcing fibers and has a cross-sectional shape comprising at least one linear part and at least one curved part connected to the linear part; and a release sheet bonded and united through an adhesive resin to at least part of a surface of the reinforcing-fiber base along the lengthwise direction for the base. A process for producing a preform comprises: a step in which a continuous flat reinforcing-fiber base having a release sheet bonded and united to a surface thereof is shaped so that the cross-sectional shape of the base comes to have a curved part to thereby produce a preshaped object; and a preshaped-object uniting step in which the preshaped object is bonded and united to another preshaped object.

Abstract: The structural warp knit sheet provided by this invention is a warp knit sheet for spars or stringers which comprises: a warp knit structure constituted of chain-stitch structures configured of ground knitting yarns; longitudinal insertion yarns that have been inserted in the longitudinal direction into the warp knit structure, the longitudinal insertion yarns being continuous carbon fiber yarns; and transverse insertion yarns that have been inserted in directions along which the transverse insertion yarns shuttle between the adjacent chain-stitch structures, the chain-stitch structures having been united by means of the transverse insertion yarns. The longitudinal insertion yarns are carbon fiber yarns which each is composed of 12,000-50,000 filaments and has a tensile strength of 4 GPa or higher, a tensile modulus of 220-450 GPa, and a drape value of 4-22.

Abstract: A method of producing fiber-reinforced plastic uses a molding die which includes a resin filling port at one end; a resin suction port at the other end; a laminate body of a plurality of laminated fiber-reinforced base materials and housed in the inner space of the molding die; a resin diffusion medium extending from the resin filling port and provided on opposite surfaces of the laminate body to supply resin onto opposite surfaces of the laminate body from the resin filling port; and a resin suction medium extending from the resin suction port and provided along a side surface of the laminate body on the suction port side to contact the side surface or to have a gap from the side surface, in a state that gas or resin can be suctioned from the laminate body so that the gas or resin can be moved from the laminate body toward the resin suction port.

Abstract: A preform for the molding of a fiber-reinforced resin beam includes a reinforcing-fiber beam which has been formed from a reinforcing-fiber base made up of many reinforcing fibers and has a cross-sectional shape with at least one linear part and at least one curved part connected to the linear part; and a release sheet bonded and united through an adhesive resin to at least part of a surface of the reinforcing-fiber base along the lengthwise direction for the base. A process for producing a preform includes shaping a continuous flat reinforcing-fiber base having a release sheet bonded and united to a surface thereof so that the cross-sectional shape of the base has a curved part to thereby produce a preshaped object; and bonding and uniting the preshaped object to another preshaped object.

Abstract: A manufacturing device used when manufacturing composite material through the RTM method and the vacuum assisted RTM method and provides a manufacturing device which is capable of manufacturing a laminate excellent in the handling property and formability continuously by making the manufacturing device of a laminate to be comprised of an adhesion device for partially adhering and integrating inter-layers of a laminate precursor in which two or more reinforcing fiber base materials having a resin material on a surface are laminated by the resin material to obtain a laminate, the adhesion device including a pressing tool and a plate tool arranged facing each other, the pressing tool including a pressing plate and a plurality of pressing pins, at least one of the pressing tool and the plate tool having a raising and lowering function, and at least one of the pressing tool and the plate tool having a heating function.

Abstract: The invention provides (1) a reinforcing fiber base material having a weave constituted of both reinforcing fiber filaments arranged in one direction in parallel with each other and auxiliary yarns arranged in another direction, which satisfies the relationship: L=H/cos ? (wherein L is the length of auxiliary yarn covering one reinforcing fiber filament and H is the width of the filament as determined in such a state where the reinforcing fiber filaments are unified only with the auxiliary yarns; and 3°?? (in-plane shear strain)?30°) and wherein 2 g/m2 to 40 g/m2 of an adhesive resin having a glass transition temperature between 0° C. and 95° C.

Abstract: The present invention relates to a composite material using titanium or a titanium alloy, and concerns such a composite material obtained through processes in which after an imidazole compound has been applied to the surface of titanium or a titanium alloy, an adhered is adhered thereto. The composite material of the present invention is obtained by adhering the adhere thereto by using an adhesive resin composition containing a thermoplastic resin having a fracture energy release rate G1C of 4500 J/m2 or more. The present invention makes it possible to provide a composite material using titanium or a titanium alloy, which exerts a superior adhesive strength stably at room temperature as well as even after exposure to a high-temperature, high humidity condition.

Abstract: A curved reinforcing fiber substrate having a curved planar shape comprising a plurality of reinforcing fiber yarns arranged parallel to a direction along a circumferential direction of the curved shape, and auxiliary weft yarns arranged in directions crossing the plurality of reinforcing fiber yarns each arranged in one direction of the circumferential direction.

Abstract: To heat a laminate of a reinforcing fiber base material uniformly with high precision, a forming-molding tool for resin transfer molding of fiber reinforced plastics obtained by integrating a face plate part and a flat plate part for forming a hollow convex part, in which metallic piping as a flow path of a heating medium is integrated with the back surface of the face plate part by a thermally conductive material and a rubber cord is integrated with an outside of a region used for forming or molding in the flat plate part is used.

Abstract: A manufacturing device used when manufacturing composite material through the RTM method and the vacuum assisted RTM method and provides a manufacturing device which is capable of manufacturing a laminate excellent in the handling property and formability continuously by making the manufacturing device of a laminate to be comprised of an adhesion device for partially adhering and integrating inter-layers of a laminate precursor in which two or more reinforcing fiber base materials having a resin material on a surface are laminated by the resin material to obtain a laminate, the adhesion device including a pressing tool and a plate tool arranged facing each other, the pressing tool including a pressing plate and a plurality of pressing pins, at least one of the pressing tool and the plate tool having a raising and lowering function, and at least one of the pressing tool and the plate tool having a heating function.

Abstract: A preform for the molding of a fiber-reinforced resin beam, the preform comprising: a reinforcing-fiber beam which has been formed from a reinforcing-fiber base made up of many reinforcing fibers and has a cross-sectional shape comprising at least one linear part and at least one curved part connected to the linear part; and a release sheet bonded and united through an adhesive resin to at least part of a surface of the reinforcing-fiber base along the lengthwise direction for the base. A process for producing a preform comprises: a step in which a continuous flat reinforcing-fiber base having a release sheet bonded and united to a surface thereof is shaped so that the cross-sectional shape of the base comes to have a curved part to thereby produce a preshaped object; and a preshaped-object uniting step in which the preshaped object is bonded and united to another preshaped object.

Abstract: The invention provides (1) a reinforcing fiber base material having a weave constituted of both reinforcing fiber filaments arranged in one direction in parallel with each other and auxiliary yarns arranged in another direction, which satisfies the relationship: L=H/cos ? (wherein L is the length of auxiliary yarn covering one reinforcing fiber filament and H is the width of the filament as determined in such a state where the reinforcing fiber filaments are unified only with the auxiliary yarns; and 3°?? (in-plane shear strain)?30°) and wherein 2 g/m2 to 40 g/m2 of an adhesive resin having a glass transition temperature between 0° C. and 95° C.

Abstract: The present invention relates to a composite material using titanium or a titanium alloy, and concerns such a composite material obtained through processes in which after an imidazole compound has been applied to the surface of titanium or a titanium alloy, an adherend is adhered thereto. The composite material of the present invention is obtained by adhering the adhere thereto by using an adhesive resin composition containing a thermoplastic resin having a fracture energy release rate G1c of 4500 J/m2 or more. The present invention makes it possible to provide a composite material using titanium or a titanium alloy, which exerts a superior adhesive strength stably at room temperature as well as even after exposure to a high-temperature, high-humidity condition.

Abstract: A fiber-reinforced composite material including reinforcing fibers and a matrix resin, wherein at least some of the reinforcing fibers have their ends in the matrix resin, and a second resin having an elastic modulus less than that of the matrix resin is present in contact with fiber ends of at least some of reinforcing fibers having above-mentioned ends and only in the neighborhood thereof.

Abstract: A light-weight, highly rigid, high-strength environment-friendly fiber-reinforced plastic (hereinafter, CFRP) board having a surface quality that can endure long-term use suitable for use in automobiles and the like is provided. A method for making the same is also provided. The CFRP board includes a board member formed from a woven fabric as a reinforcing base material, the woven fabric including carbon fibers; and at least one of a gel coat and a paint provided on the board member, wherein the NSIC value of the surface of the CFRP board is 30% or more.

Abstract: A fiber-reinforced composite material comprised of reinforcing fibers and a matrix resin, wherein at least some of the reinforcing fibers have their ends in the matrix resin, characterizes in that a second resin having an elastic modulus less than that of the matrix resin is present in contact with fiber ends of at least some of reinforcing fibers having above-mentioned ends and only in the neighborhood thereof.