Abstract: A joint body includes first and second metal members and a joint portion including a welded portion where the first and second metal members are joined together, the welded portion having a line shape. The joint portion includes first and second longitudinal portions and a plurality of connecting portions. The first longitudinal portion has first intersecting portions arranged in a first direction and extends in the first direction. The second longitudinal portion has second intersecting portions arranged in the first direction and extends in the first direction. The welded portion intersects itself at the first and second intersecting portions. The connecting portions are arranged in the first direction. The connecting portions extend in a first direction and connect the first and second longitudinal portions.

Abstract: In a method for joining members, a first tube, and a second tube capable of being inserted into the first tube are prepared. The second tube is inserted in a tube hole of the first tube in an axial direction of the first tube. The second tube is radially expanded toward the first tube so that the first tube and the second tube are joined by press-fitting. The first tube is made of a material having a spring back amount larger than a spring back amount of the second tube.

Abstract: A plurality of welding torches, which are disposed in a welding device and are made movable in three-dimensional directions, are provided with welding wires that differ in composition and diameter from each other. When welding is performed in the horizontal direction, an arc is generated by at least two of the welding torches to form a bead while the welding wires are being fed. When welding is performed in the vertical direction, the arc is generated by any one welding torch of the two welding torches to form a bead while the welding wire is being fed. Thus, a steel sheet to which an anti-corrosion material has been applied can be welded continuously with high quality and high-efficiency in a horizontal orientation and vertical orientation.

Abstract: A hydrogen station operation method capable of adjusting pressure in a reservoir to the pressure suitable for liquid hydrogen replenishment while cutting hydrogen waste is for replenishing liquid hydrogen into the reservoir in a hydrogen station including: a gasification path partially gasifying liquid hydrogen out of the reservoir and returning it; and a gas delivery path delivering gasified hydrogen in the reservoir into a path between a vaporizer and a compressor or the vaporizer, when the remainder of liquid hydrogen in the reservoir becomes a first threshold or less, by reducing the liquid hydrogen amount flowing through the gasification path by a valve therein, reducing the gasification amount of liquid hydrogen in the reservoir, and increasing the hydrogen gas amount delivered through the gas delivery path from the reservoir by a valve therein, pressure in the reservoir is reduced, thereby performing operation where suction pressure of the compressor is reduced.

Abstract: A rubber sheet monitoring apparatus (1) comprises a first imaging unit (11), a second imaging unit (2), a first generation unit (142) and a second calculation unit (146). The first imaging unit successively acquires images of a first optical cutting edge (CL1) formed on a front surface of a rubber sheet (6). The second imaging unit successively acquires images of a second optical cutting edge (CL2) formed on a back surface of the rubber sheet. The first generation unit performs, for each of the successively acquired images of the first optical cutting edge, generation of first data (D1) representing height variation of a widthwise cross-sectional edge of the rubber sheet using the image of the first optical cutting edge, and performs, for each of the successively obtained images of the second optical cutting edge, generation of second data (D2) representing height variation of a widthwise cross-sectional edge of the rubber sheet using the image of the second optical cutting edge.

Abstract: The present invention relates to a read-only optical information recording medium in which at least one reflection film and at least one light transmission layer are laid in order on a substrate and from which information is reproduced by blue laser. The reflection film includes a metal oxide containing Sn and Zn or a metal oxide containing In. The reflection film has a film thickness of 20 nm or more and 70 nm or less.

Abstract: A door beam including an aluminum alloy extrusion extended in a longitudinal direction and having a pair of webs and a pair of flanges to be positioned on an inside and an outside in a vehicle width direction. The pair of webs connect the pair of flanges at joint portions of each of the pair of webs such that the pair of webs and the pair of flanges form a closed cross section in a direction perpendicular to the longitudinal direction, and each of the pair of webs has a welded portion in a vicinity of a neutral axis passing through a centroid of the closed cross section and parallel to the pair of flanges.

Abstract: A compressor compresses air in such a manner that a motor is driven by renewable energy. An accumulator tank stores the air thus compressed. An expander is driven by the compressed air. A generator is mechanically connected to the expander. A first heat exchanger recovers compressed heat. A heat medium tank that stores a heat medium. A second heat exchanger that heats the compressed air. A first pump adjusts an amount of the heat medium to be supplied to the first heat exchanger. A control device controls the first pump to adjust the amount of heat medium to be supplied to the first heat exchanger so as to maintain the heat medium, which is stored in the heat medium tank, at a predetermined first temperature.

Abstract: Provided are an energy regeneration device which can regenerate energy of a working fluid discharged from an actuator while controlling a flow rate of the working fluid, and a work machine including the foregoing device. The regeneration device (100) includes a boom cylinder (20), an inertial fluid container (102), an oil tank (110), an accumulator (105), a low-pressure-side opening/closing device (103), and a high-pressure-side opening/closing device (104). A calculation unit (151) calculates a duty ratio for opening/closing the low-pressure-side opening/closing device (103) and the high-pressure-side opening/closing device (104) in accordance with a desired flow rate of a working fluid discharged from the boom cylinder (20).

Abstract: Provided is a method for cleaning an arbitrary fluid channel in a fluid flow device including a channel-forming body forming a plurality of fluid channels, a first header, and a second header. The method includes opening a cleaning-target channel included in the plurality of fluid channels and closing a non-cleaning-target channel which is the other fluid channel; and supplying a cleaning liquid to a cleaning-liquid supply header selected from the first header and the second header in a state where the non-cleaning-target channel is closed to cause the cleaning liquid to flow only through the cleaning-target channel.

Abstract: A compressed air storage power generation device 1 is provided with: a motor 11 which is driven using input electric power; a compressor 10 which is mechanically connected with the motor and compresses air; a plurality of accumulator tank groups 20A, 20B, 20C, 20D which are in fluid connection with the compressor and in which compressed air obtained by the compressor is stored; a plurality of pressure sensors 21A, 21B, 21C, 21D which are provided in the accumulator tank groups and which measure pressures of the accumulator tank groups; an expander 30 which is in fluid connection with the accumulator tank groups and driven by means of compressed air supplied from the accumulator tank groups; a generator 31 which is mechanically connected with the expander; and a control unit 40 which, on the basis of the pressures of the respective accumulator tank groups measured by means of the pressure sensors, determines the order of the accumulator tank groups in which to store compressed air for charging, and determines

Abstract: A method for manufacturing a different material joined member comprises: a step of punching a shaft portion of a steel rivet into a light alloy material provided with a solid resin layer on at least one surface thereof; a step of causing a shaft portion tip of the rivet to protrude from the solid resin layer on the light alloy material; a step of laying a steel material over the surface of the light alloy material on the side where the shaft portion tip of the rivet protrudes, with the solid resin layer therebetween; and a step of welding the shaft portion of the rivet with the steel material. Instead of punching the rivet, a hole may be drilled in the light alloy material provided with the solid resin layer together with the solid resin layer, the steel material may be laid over via the solid resin layer, and the shaft portion of the steel rivet may be inserted into the hole.

Abstract: A structural member includes an inner member and an outer member formed of a material different from that of the inner member, the outer member being positioned outside the inner member so as to surround the inner member and including a first adjacent surface adjacent to an outer surface of the inner member, wherein an insulator is disposed between the first adjacent surface and a second adjacent surface of the inner member, the second adjacent surface being adjacent to the first adjacent surface.

Abstract: An electromagnetic forming device for an aluminum tube member, the electromagnetic forming device including: a jig plate in which a support member that has a through hole has been fixed to a substrate; and a tube insertion mechanism that inserts a tube member into the through hole in the support member. The electromagnetic forming device also includes: a coil unit that has an electromagnetic-forming coil part; a coil movement mechanism that supports the coil unit; a current supply part that supplies current for electromagnetic forming to the electromagnetic-forming coil part; and a jig plate transport mechanism that transports the jig plate from a tube insertion stage ST1 to a tube expansion stage ST2.

Abstract: A method for measuring the stress of a concave section of a test subject which comprises a metal and has a surface and a concave section, the method including: a detection step for detecting, using a two-dimensional detector, a diffraction ring of diffracted X-rays which is formed by causing X-rays to be incident on the concave section and to be diffracted by the concave section; and a calculation step for calculating the stress of the concave section on the basis of the detection results during the detection step. Therein, the detection step involves causing X-rays to be incident on each of a plurality of sites inside the concave section of the test subject, and detecting, using a two-dimensional detector, the diffraction ring formed by the diffraction of the X-rays by the concave section.

Abstract: A compressed air energy storage power generation device includes an inert gas source for supplying an inert gas, an inert gas flow path system, and a flow path switching unit. The inert gas flow path system fluidly connects the gas phase portion of the high temperature heat storage unit, the gas phase portion of the low temperature heat storage unit, and the inert gas source. The flow path switching unit switches the inert gas flow path system to at least a state in which the inert gas source is in communication with both the high temperature heat storage unit and the low temperature heat storage unit and a state in which the inert gas source is blocked from both the high temperature heat storage unit and the low temperature heat storage unit.

Abstract: The objective of the present invention is to improve the rigidity of a vehicle knuckle made from an aluminum alloy with respect to a force directed from the outside to the inside in the width direction of a vehicle. A vehicle knuckle (11) is provided with a bearing support portion (111), a knuckle upper portion (113) and a knuckle lower portion (112). With the vehicle knuckle (11) in a position fitted to a vehicle main body, the knuckle upper portion (113) has a shape in which, if the knuckle upper portion (113) is divided equally into five or more regions in a vertical direction, and the center of the bearing support portion (111) is fixed and a horizontal load F is applied to a knuckle upper end portion (115) from the outside toward the inside in the width direction of the vehicle, the minimum value of a value obtained by dividing the strain energy in each of the five or more regions other than a first region (11A) by the mass of the corresponding region is at least equal to 0.

Abstract: Provided are formation method and device for slug flow capable of suitably forming a stable slug flow. The formation method for slug flow includes a step of preparing a microreactor (1) that forms a fine flow passage (11), and includes a wall surface having a hydrophilic property, a hydrophilic liquid supply step of supplying the fine flow passage (11) with only a hydrophilic liquid out of the hydrophilic liquid and a hydrophobic liquid, and a step of supplying the fine flow passage (11) with the hydrophilic liquid and the hydrophobic liquid after executing the hydrophilic liquid supply step, thereby forming a slug flow in which cells formed of the hydrophilic liquid and cells formed of the hydrophobic liquid are alternately arranged in a fine-flow-passage length direction of the fine flow passage (11) in the fine flow passage (11).

Abstract: A gas shielded arc welding method includes welding a steel sheet with a tensile strength of 780 MPa or more using a shielding gas containing Ar in an amount of 92 vol. % to 99.5 vol. %. In the gas shielded arc welding method, a value calculated from the following expression (1) is 0.20 or more: {?v/(D/2)2}×10?{(100?CAr)×I/v}×0.1 . . . (1), where CAr represents an Ar content (vol. %) in the shielding gas, D represents an inner diameter (mm) of a nozzle from which the shielding gas is supplied, v represents a welding speed (cm/min), and I represents a welding current (A).

Abstract: Provided is a fluid flow device having high freedom of choosing means for detecting flow errors. The fluid flow device includes a channel forming body. The channel forming body forms a plurality of fluid channels, a plurality of detection spaces corresponding to the fluid channels, respectively, and a plurality of communication channels providing respective communications between the fluid channels and the detection spaces corresponding thereto, respectively. Each of the detection spaces contains a detection fluid and a detection gas aligned in a longitudinal direction thereof, and an interface is formed therebetween. The detection gas is contained in the detection space so as to allow the position of the interface to be changed with the pressure change of a processing object fluid that flows through the fluid channels.