Abstract: A laminated ceramic electronic component according to the present disclosure includes a laminated body in which ceramic layers and electrode layers are alternately laminated, at least one of the electrode layers including a first electrode portion containing a conductive carbon material.

Abstract: Whether an internal defect is present in an inspection target is readily judged. Provided is an inspection method for an inspection target that is a layered structure including an FRP material and/or a structure made of resin, the method including the steps of: tapping, with a tapping tool, an inspection target area on a surface of the inspection target; detecting, by an accelerometer mounted to the tapping tool, an acceleration signal corresponding to acceleration of the tapping tool due to reaction force against the tapping; recording waveform data about the detected acceleration signal; creating a contour map corresponding to the inspection target area, based on the recorded waveform data; displaying the contour map on a display unit; and judging whether an internal defect is present in the inspection target, based on the contour map displayed on the display unit.

Abstract: A vortex generator for a wind turbine blade includes: a platform portion to be fixed to a surface of the wind turbine blade; and at least one fin erected on the platform portion. The platform portion includes marks disposed on a pair of opposite positions in an outer edge region of the platform portion and indicating orientation of the vortex generator.

Abstract: A laminated ceramic electronic component according to the present disclosure includes a laminated body in which ceramic layers and electrode layers are alternately laminated, at least one of the electrode layers including a first electrode portion containing a conductive carbon material.

Abstract: A laminated ceramic electronic component according to the present disclosure includes a laminated body in which ceramic layers and electrode layers are alternately laminated, a pair of external electrodes provided at end portions of the laminated body, and an intermediate electrode configured to electrically connect at least one electrode layer and one of the external electrodes, wherein the intermediate electrode contains a conductive carbon material.

Abstract: A method of mounting a vortex generator to a wind turbine blade includes: a step of specifying positions of at least two reference points at different coordinates in a blade spanwise direction of the wind turbine blade on the wind turbine blade; and a step of adjusting a mounting direction of the vortex generator and mounting the vortex generator to the wind turbine blade, with reference to a line connecting the reference points. The step of specifying the positions of the reference points comprises specifying the position of each of the reference points on the basis of: a length along a surface of the wind turbine blade in a chordwise direction from a trailing edge of the wind turbine blade or from a blade spanwise directional line extending along the blade spanwise direction on the surface of the wind turbine blade; and a distance in the blade spanwise direction from a blade root or from a blade tip of the wind turbine blade.

Abstract: Whether an internal defect is present in an inspection target is readily judged. Provided is an inspection method for an inspection target that is a layered structure including an FRP material and/or a structure made of resin, the method including the steps of: tapping, with a tapping tool, an inspection target area on a surface of the inspection target; detecting, by an accelerometer mounted to the tapping tool, an acceleration signal corresponding to acceleration of the tapping tool due to reaction force against the tapping; recording waveform data about the detected acceleration signal; creating a contour map corresponding to the inspection target area, based on the recorded waveform data; displaying the contour map on a display unit; and judging whether an internal defect is present in the inspection target, based on the contour map displayed on the display unit.

Abstract: A method of mounting a vortex generator to a wind turbine blade includes: a step of specifying positions of at least two reference points at different coordinates in a blade spanwise direction of the wind turbine blade on the wind turbine blade; and a step of adjusting a mounting direction of the vortex generator and mounting the vortex generator to the wind turbine blade, with reference to a line connecting the reference points. The step of specifying the positions of the reference points comprises specifying the position of each of the reference points on the basis of: a length along a surface of the wind turbine blade in a chordwise direction from a trailing edge of the wind turbine blade or from a blade spanwise directional line extending along the blade spanwise direction on the surface of the wind turbine blade; and a distance in the blade spanwise direction from a blade root or from a blade tip of the wind turbine blade.

Abstract: A vortex generator for a wind turbine blade includes: a platform portion to be fixed to a surface of the wind turbine blade; and at least one fin erected on the platform portion. The platform portion includes marks disposed on a pair of opposite positions in an outer edge region of the platform portion and indicating orientation of the vortex generator.

Abstract: A structure for a nacelle cover connection portion of a wind turbine generator includes a lengthy first angled member fixed to an inside surface of a nacelle cover and forming an upper end portion of a side wall panel; and a lengthy second angled member fixed to the inside surface and forming a lower end portion of a roof panel. An upper surface of the first angled member and a lower surface of the second angled member are aligned with and fixed to each other. A covering portion covering the upper end portion from the outside of a nacelle is provided at a predetermined interval from the same and integral with the lower end portion so as to protrude to the outside of the nacelle cover farther than the lower end portion. A packing is interposed between the upper and lower surfaces.

Abstract: The present invention provides a composite material panel structure and a manufacturing method thereof with which an anti-lightning function can be realized without adding a separate anti-lightning structure to the composite material panel structure. In a composite material panel structure formed from a composite material panel containing reinforcing fibers, the composite material panel includes: a fiber-reinforced base material impregnated with a matrix resin; a conductive mesh sheet disposed on one surface side of the fiber-reinforced base material; and a bag film disposed on the one surface side of the fiber-reinforced base material so as to sandwich the conductive mesh sheet. The conductive mesh sheets of a plurality of the composite material panels are electrically connected to each other.

Abstract: To provide a nacelle roof structure of a wind turbine generator, where the nacelle roof structure is capable of reducing stress concentration on joints of a roofing member divided into multiple parts to accommodate growing size of a nacelle as well as improving transport efficiency of the roofing member. A nacelle roof structure of a wind turbine generator, with a top face of a nacelle being covered with a plate-type roofing member (30), in which the roofing member (30) has a joining structural portion (32) in which roof shingles (31) that divide the roofing member into a plurality of parts in a main-shaft direction are combined and plate couplings provided at opposite ends in the main-shaft direction are fastened together by being laid one on top of another; and two or more of the roof shingles (31) are equal in cut length in the main-shaft direction.

Abstract: There is provided a method for hoisting and lowering a device in a rotor head of a wind turbine generator, that can easily perform a device hoisting and lowering operation in the rotor head without an external crane. The method for hoisting and lowering a device in a rotor head includes a step of mounting a temporary winch rail to a rail support portion previously provided in the rotor head, a step of installing a temporary winch on the temporary winch rail, a step of opening a maintenance hatch provided in the rotor head, and a step of hoisting and lowering a replacement device to be attached or removed in the rotor head through a hoisting and lowering opening in the maintenance hatch by the temporary winch.

Abstract: A structure for a nacelle cover connection portion of a wind turbine generator includes a lengthy first angled member fixed to an inside surface of a nacelle cover and forming an upper end portion of a side wall panel; and a lengthy second angled member fixed to the inside surface and forming a lower end portion of a roof panel. An upper surface of the first angled member and a lower surface of the second angled member are aligned with and fixed to each other. A covering portion covering the upper end portion from the outside of a nacelle is provided at a predetermined interval from the same and integral with the lower end portion so as to protrude to the outside of the nacelle cover farther than the lower end portion. A packing is interposed between the upper and lower surfaces.

Abstract: A dielectric ceramic exhibiting a high dielectric constant is provided. The relative dielectric constant of the dielectric ceramic is stable with respect to temperature dependence and exhibits insulation resistance having a reduced voltage dependence. The dielectric ceramic of the invention can be used to form a multilayer ceramic capacitor that has a long life.

Abstract: There is provided a wind turbine generator that includes an improved grease supply and discharge system of lubricant oil used in a blade rotating ring bearing of a wind turbine blade, and can reliably recover discharged grease. The wind turbine generator includes a pitch control mechanism that can adjust a pitch angle of the wind turbine blade via the blade rotating ring bearing provided between the wind turbine blade and a rotor head, a grease supply and discharge device is provided in the rotor head, and the grease supply and discharge device includes a grease supply device that pumps lubricant oil in a supplied grease tank with a grease supply pump and supplies the lubricant oil to the blade rotating ring bearing, and a grease discharge device that forcibly sucks and recovers the discharged grease from the blade rotating ring bearing.

Abstract: The present invention provides a wind turbine generator in which an oil seal structure provided in a blade rotating ring bearing of a wind turbine blade is improved and leakage of lubricant oil to outside is prevented or suppressed.

Abstract: The present invention provides a composite material panel structure and a manufacturing method thereof with which an anti-lightning function can be realized without adding a separate anti-lightning structure to the composite material panel structure. In a composite material panel structure formed from a composite material panel containing reinforcing fibers, the composite material panel includes: a fiber-reinforced base material impregnated with a matrix resin; a conductive mesh sheet disposed on one surface side of the fiber-reinforced base material; and a bag film disposed on the one surface side of the fiber-reinforced base material so as to sandwich the conductive mesh sheet. The conductive mesh sheets of a plurality of the composite material panels are electrically connected to each other.

Abstract: A crystal constituting a dielectric porcelain, comprised of a first crystal group composed of crystal grains of 0.2 atomic % or less calcium concentration and a second crystal group composed of crystal grains of 0.4 atomic % or more calcium concentration, wherein the ratio of concentration of each of magnesium and a first rare earth element contained in a center portion to that contained in a surface layer portion of crystal grains constituting the first crystal group is greater than the corresponding concentration ratio of crystal grains constituting the second crystal group, and wherein on a polished surface resulting from polishing of the surface of the dielectric porcelain, when the area of crystal grains of the first crystal group is referred to as a and the area of crystal grains of the second crystal group referred to as b, the ratio of b/(a+b) is in the range of 0.5 to 0.8.