Abstract: This composite material blade, which is formed using a composite material including reinforcing fibers and resin, and which has a positive pressure surface and a negative pressure surface, is provided with a ventral part, being the part on the positive pressure surface side in a blade thickness direction, which is the direction joining the positive pressure surface and the negative pressure surface, a dorsal part, being the part on the negative pressure surface side in the blade thickness direction, and a metal shield portion which is provided on the leading edge side, being the upstream side in a flow direction in which a fluid flows, wherein: the metal shield portion includes a main body portion provided on the leading edge side, and an embedded portion which is provided on the trailing edge side, being the downstream side in the flow direction, of the main body portion, and which is provided between the ventral part and the dorsal part; and the plate thickness of the metal shield portion in the blade thick

Abstract: A gas supply device for a manufacturing device includes an inert gas supply source that supplies inert gas, a supply line connected to the inert gas supply source, a nitrogen removal portion that is provided on the supply line and that removes at least a portion of nitrogen in the inert gas, and an oxygen removal portion that is provided on the supply line and that removes at least a portion of oxygen in the inert gas.

Abstract: A workpiece material is fed between rollers to bend the workpiece material while rolling, wherein the workpiece has a first thickness portion and a second thickness portion connected to each other with a setting angle of 90 degrees. The first thickness portion increases from an inner side toward an outer side, and a thickness on an outer peripheral side of the first thickness portion is M, and a thickness of a cross section of the second thickness portion is N. The workpiece material is rolled in such that at a completion of bending, a thickness of a cross section of a first thickness portion is m, an outer radius of the first thickness portion is R, an inner radius of the first thickness portion is r, and a thickness of a cross section of a second thickness portion is n, and M equals to m(R/r), and N equals to n(R/r).

Abstract: This composite material blade, which is formed using a composite material including reinforcing fibers and resin, and which has a positive pressure surface and a negative pressure surface, is provided with a ventral part, being the part on the positive pressure surface side in a blade thickness direction, which is the direction joining the positive pressure surface and the negative pressure surface, a dorsal part, being the part on the negative pressure surface side in the blade thickness direction, and a metal shield portion which is provided on the leading edge side, being the upstream side in a flow direction in which a fluid flows, wherein: the metal shield portion includes a main body portion provided on the leading edge side, and an embedded portion which is provided on the trailing edge side, being the downstream side in the flow direction, of the main body portion, and which is provided between the ventral part and the dorsal part; and the plate thickness of the metal shield portion in the blade thick

Abstract: An inspection system for a fabricated object formed by layering powder includes an acquisition unit that acquires an image of a surface of each of layers, an identification unit that identifies a defect portion (protruding portion or recessed portion) on the surface of the powder and a position of the defect portion based on the acquired image, and a determination unit that determines that an abnormality occurs when the defect portion successively occurs at a same position in the plurality of layers.

Abstract: A composite blade made of prepreg obtained by impregnating reinforcement fibers with resin and curing the resin-impregnated reinforcement fibers, the composite blade including: a blade root provided on a base end and fitted into a blade groove; an airfoil provided extending from the blade root toward a tip end; and a metal patch provided between the blade groove and the blade root and placed on the blade root. The metal patch includes a plurality of projections protruding toward the blade root.

Abstract: A modeling system (control device) includes a control unit that controls a modeling means to form each of stacked modeling layers, based on modeling data representing a three-dimensional model object that is a modeling target by use of a plurality of modeling layers, a determination unit that measures and determines whether or not a measured value of a stacked height of the formed modeling layer is within a predetermined range set beforehand and including a stacked height of the modeling layer in the modeling data, and in a case where the formed modeling layer has a lacking part in which the stacked height is not within the predetermined range, a correction unit that performs correction modeling by forming a correction member in the lacking part such that the stacked height is within the predetermined range.

Abstract: A dissimilar material joining product according to at least one embodiment of the disclosure includes a base material, a cladding layer formed of a dissimilar material having a different main component element from that of the base material and formed to cover at least a part of the base material, and an additively manufactured layer formed of a dissimilar material having a different main component element from that of the base material and joined to the base material with the cladding layer interposed therebetween.

Abstract: A joint member according to at least one embodiment of the present disclosure includes a resin member, and a metal member which includes a base material, and a cubic lattice part formed on a surface of the base material and embedded with the resin member. The cubic lattice part includes a plurality of lattice points and a plurality of arms connecting the lattice points, respectively. Of the plurality of lattice points, an outermost lattice point far from the surface of the base material includes at least three lattice points forming an inclined surface with respect to the surface.

Abstract: A method of producing an additively manufactured object comprises: a step of cooling a shaped body of an alloy formed by additive manufacturing to 0° C. or lower; and a step of aging the shaped body under a temperature condition of 400° C. or higher and 600° C. or lower after the step of cooling the shaped body. The alloy contains: Fe as a main component; 17.0 mass % or more and 19.0 mass % or less of Ni; 7.0 mass % or more and 12.5 mass % or less of Co; 4.6 mass % or more and 5.2 mass % or less of Mo; 0.13 mass % or more and 1.6 mass % or less of Ti; and 0.05 mass % or more and 0.15 mass % or less of Al.

Abstract: A unidirectionally solidified article repair method according to one embodiment includes a step of forming a groove part overlapping only on one of a plurality of crystal grain boundaries in a base material made of a unidirectionally solidified alloy in which the plurality of crystal grain boundaries are aligned in one direction, and a step of forming a welded part having a metal composition similar to that of the base material by a metal used in welding with the base material in the groove part.

Abstract: A workpiece material is fed between rollers to bend the workpiece material while rolling, wherein the workpiece has a first thickness portion and a second thickness portion connected to each other with a setting angle of 90 degrees. The first thickness portion increases from an inner side toward an outer side, and a thickness on an outer peripheral side of the first thickness portion is M, and a thickness of a cross section of the second thickness portion is N. The workpiece material is rolled in such that at a completion of bending, a thickness of a cross section of a first thickness portion is m, an outer radius of the first thickness portion is R, an inner radius of the first thickness portion is r, and a thickness of a cross section of a second thickness portion is n, and M equals to m(R/r), and N equals to n(R/r).

Abstract: A laser device includes a condensing assembly for condensing laser light output from a laser oscillator and a cover for accommodating the condensing assembly, the cover including protection windows permeable to the laser light on an optical path of the laser light. The protection windows include at least one first protection window having a positive refractive index temperature coefficient and at least one second protection window having a negative refractive index temperature coefficient, the at least one first protection window and the at least one second protection window being arranged along the optical path of the laser light.

Abstract: A gas supply device for a manufacturing device includes an inert gas supply source that supplies inert gas, a supply line connected to the inert gas supply source, a nitrogen removal portion that is provided on the supply line and that removes at least a portion of nitrogen in the inert gas, and an oxygen removal portion that is provided on the supply line and that removes at least a portion of oxygen in the inert gas.

Abstract: An additive manufacturing method according to at least one embodiment includes a step of forming a first layer by melting and solidifying powder of a first metal, and a step of forming a second layer on the first layer by melting and solidifying powder of a second metal of a different type from the first metal. The first metal and the second metal are, if the first metal is added to the second metal, a combination capable of forming a solid solution, or if the first metal is added to the second metal, a combination raising a melting point as an additive amount of the first metal increases.

Abstract: A three-dimensional manufacturing apparatus according to at least one embodiment of the present disclosure includes: a manufacturing nozzle for melting a metal material with an energy beam while supplying the metal material to form a bead; a cooling medium nozzle for spraying a cooling medium toward a region including the bead in a workpiece so that the region is cooled locally; a temperature detection unit configured to detect at least a temperature of the region; and a control device for controlling at least one of a scanning rate of the cooling medium nozzle or an amount of the cooling medium to be sprayed per unit time based on a detection result from the temperature detection unit.

Abstract: A milling apparatus includes a plurality of milling roller units each including one milling roller that is made contact with, by pressing, one surface of one of a plurality of differently angled plate parts of an elongated metal milling material and another milling roller that is made contact with another surface of the plate part by pressing. At least one of the milling roller units mills a plate part different from a plate part milled by any other milling roller unit. A plurality of the milling roller units configured to mill an identical plate part are installed in a longitudinal direction of the plate part. The one milling roller and the other milling roller of at least one of the milling roller units are movable in axial directions thereof.

Abstract: A composite blade made of prepreg obtained by impregnating reinforcement fibers with resin and curing the resin-impregnated reinforcement fibers, the composite blade including: a blade root provided on a base end and fitted into a blade groove; an airfoil provided extending from the blade root toward a tip end; and a metal patch provided between the blade groove and the blade root and placed on the blade root. The metal patch includes a plurality of projections protruding toward the blade root.

Abstract: A unidirectionally solidified article repair method according to one embodiment includes a step of forming a groove part overlapping only on one of a plurality of crystal grain boundaries in a base material made of a unidirectionally solidified alloy in which the plurality of crystal grain boundaries are aligned in one direction, and a step of forming a welded part having a metal composition similar to that of the base material by a metal used in welding with the base material in the groove part.

Abstract: A bonding member according to an embodiment includes: a metal member including a first base portion made of metal and a first engagement portion made of metal and provided integrally with the first base portion; and a resin member including a second base portion made of resin and a second engagement portion made of resin and provided integrally with the second base portion so as to engage with the first engagement portion. The first engagement portion includes a three-dimensional structure formed by a frame to form a plurality of cavities communicating with each other inside the frame, and the second engagement portion includes a resin filled in the plurality of cavities of the three-dimensional structure. A ratio of the frame per unit volume including the cavity and the frame in the first engagement portion gradually increases toward the first base portion while fluctuating.