Abstract: An airfoil assembly for a turbine engine. The airfoil assembly has an airfoil, and a spa. The airfoil has a wall bounding an interior and defining an exterior surface. The wall extends between a leading edge and a trailing edge to define a chordwise direction, and between a root and a tip to define a spanwise direction. The spar includes a centerline axis, the spar extends into the interior of the airfoil.

Abstract: A method of manufacturing a composite component having an outer shell, an inner hub, and a plurality of struts connecting the outer shell and the inner hub. An initial outer shell hoop preform is woven and includes a plurality of bifurcated strut portions on an exterior side of the initial outer shell hoop preform. The initial outer shell hoop preform is turned inside-out to form a woven outer shell hoop preform so that the bifurcated strut portions are arranged on the interior side to extend inward. The woven outer shell hoop preform is installed on a mold tooling structure, along with an inner hub preform, and the bifurcated strut portions are connected to inner hub pi-joint members of the inner hub preform. A matrix material is injected into the mold tooling structure and a curing process is applied to the mold tooling structure to obtain the composite component.

Abstract: A method of manufacturing a composite component including an outer shell, an inner hub, and a plurality of struts connecting the outer shell and the inner hub. The method includes installing an outer shell hoop preform on a mold tooling structure, installing an inner hub hoop preform on the mold tooling structure, and inserting strut preforms through outer shell strut slots, and through inner hub strut slots. A first end of the strut preform has bifurcated end portions that are overlayed onto the outer shell hoop preform, and a second end of the strut preform has bifurcated end portions that are overlayed onto one of the outer shell hoop preform or the inner hub hoop preform. A matrix material is injected into the mold tooling structure and a curing process is applied to the mold tooling structure to obtain a molded composite component.

Abstract: A cellulose-based all-solid-state polymer electrolyte separator, a preparation method thereof and an application thereof are provided. The cellulose separator is used as a skeleton, and solid-state polymer electrolyte is injected into pores of the separator using atomic layer deposition and dipping-coating processes. In addition, the polymer electrolyte remains in an amorphous structure at high temperatures by using an instantaneous quenching method, and ionic conductivity of the solid-state polymer electrolyte at room temperature is improved. After a surface of the solid-state polymer electrolyte separator is further coated with an alumina nanolayer, an electrochemical window width of the separator is significantly increased, and the solid-state polymer electrolyte separator is prevented from decomposing under a high voltage.

Abstract: A material band riveting device includes a feeding structure, a riveting structure and a material pulling structure. The riveting structure is disposed to one end of the feeding structure. The riveting structure has a riveting mold, a plurality of locating pins, two first riveting pins, two second riveting pins and two pressing blocks. The plurality of the locating pins are partially disposed in the riveting mold. The two first riveting pins are partially disposed in the riveting mold. Each first riveting pin has a first riveting portion. The two second riveting pins are partially disposed in the riveting mold. Each second riveting pin has a second riveting portion. The material pulling structure is disposed under the feeding structure.

Abstract: An apparatus for estimating a condition of a battery includes a mode identifying unit configured to identify a usage mode of the battery during a period of time and its corresponding attenuation curve, according to recorded data on battery usage, stored usage modes of the battery and attenuation curves corresponding to the various usage modes, the attenuation curve representing a change of a fully charged capacity of the battery with battery usage; and a condition estimating unit configured to calculate battery degradation according to the recorded data, the identified usage mode and its corresponding attenuation curve, the degradation representing a quantity of the fully charged capacity of the battery that is reduced over the battery usage. The condition of the battery is estimated so as to rationally judge the residual value of the battery in operation.

Abstract: A preform for making a casing structure for turbine engines. The preform includes a plurality of reinforcing fiber tows arranged in a two-dimensional weave structure, a three-dimensional weave structure, or a braided structure. The plurality of reinforcing fiber tows include integrally woven or braided fiber tows having a diameter or a density greater than a respective diameter or density of other woven or braided fiber tows in the two-dimensional weave structure, the three-dimensional weave structure, or the braided structure. The integrally woven or braided fiber tows are located in an area of the preform that is bent to form an angled corner to thereby provide strength to a casing structure comprising the angled corner.

Abstract: An airbag assembly, including a clamped airbag portion, wherein the clamped airbag portion includes a plurality of first airbags, each of the first airbags includes at least one connecting portion and a plurality of sub-airbags, the plurality of sub-airbags are overlapped with each other, the at least one connecting portion is disposed between adjacent sub-airbags of the plurality of sub-airbags, so as to communicate the plurality of sub-airbags, and the at least one connecting portion is disposed between first sides of the first airbags and second sides of the first airbags; and adjacent first airbags are overlapped with each other in a clamping mode for cooperation, so that the first airbag assembly extends in a direction from the first sides of the first airbags to the second sides of the first airbags.

Abstract: A touch display panel includes a light-emitting display layer, first touch electrodes, a color resist layer, and second touch electrodes. The light-emitting display layer includes a plurality of light-emitting units arranged in an array; the first touch electrodes are located on the side of the light-emitting display layer facing a light-emitting surface of the touch display panel, and are arranged in a first direction parallel to the touch display panel; the color resist layer includes a plurality of color resist units arranged in an array; the color resist units are arranged right opposite to the light-emitting units, and the color resist layer and the first touch electrodes are arranged side by side; the second touch electrodes are located on the side of the light-emitting display layer facing the light-emitting surface of the touch display panel, and are arranged in a second direction parallel to the touch display panel.

Abstract: An airfoil assembly for a turbine engine. The airfoil assembly has an airfoil, and a spa. The airfoil has a wall bounding an interior and defining an exterior surface. The wall extends between a leading edge and a trailing edge to define a chordwise direction, and between a root and a tip to define a spanwise direction. The spar includes a centerline axis. the spar extends into the interior of the airfoil.

Abstract: A mattress and a bed. The mattress comprises: a support layer assembly (10), wherein the support layer assembly (10) is embedded with a pipe channel (11); an airbag assembly (20), wherein the airbag assembly (20) is located on the support layer assembly (10); and a pipe assembly (30), wherein the pipe assembly (30) is arranged at least partially passing through the pipe channel (11) and is in communication with the airbag assembly (20). The mattress and the bed effectively solve the problem of poor comfort of a mattress due to the fixation of an air pipe in the related art.

Abstract: Wave-absorbing material powder of the present invention has oxidation resistance and salt fog resistance, which includes an iron-containing wave-absorbing material powder, and a metal oxide ceramic layer and a metal phosphate layer sequentially coated on an outside of the iron-containing wave-absorbing material powder from the inside to the outside. A method for preparing the wave-absorbing material powder includes using atomic layer deposition to coat the iron-containing wave absorbing material powder with a metal oxide ceramic coating, and then adopting the atomic layer deposition to coat the metal oxide ceramic coating with a metal phosphate layer; repeating the above steps to form an alternating nano-stack of the metal oxide ceramic coating and the metal phosphate layer outside the iron-containing absorbing material powder; and finally performing a high-temperature annealing treatment.

Abstract: An airfoil assembly and a method of forming the airfoil assembly, the airfoil assembly having a trunnion, a spar, a skin, and an insert. The trunnion having a flared socket with an open top. The spar extending from the flared socket and through the open top. The spar having a first end located within the flared socket. The skin having a braided or woven fiber.

Abstract: The present disclosure relates to an airfoil assembly for a turbine engine and methods of assembly thereof. The airfoil assembly generally includes a composite airfoil and a spar. The composite airfoil has a pressure side and a suction side extending in an axial direction between a leading edge and a trailing edge defining a chordwise direction and extending radially between a root and a tip defining a spanwise direction and having a span-length. The spar includes a first portion including a first material and a second portion joined at an interface with the first portion. The second portion further includes a second material, different from the first material, joined to the first portion at an interface. The method generally includes joining the first portion with the second portion at the interface; and assembling the spar with the composite airfoil.

Abstract: The present disclosure provides a loudspeaker assembly and an electronic device, relating to the technical field of electronic devices, so as to solve the problems of single sound effect and lack of good sound effect. The loudspeaker assembly includes a first housing, a second housing, a loudspeaker vibrator and an adjusting mechanism. The first housing and the loudspeaker vibrator form a first cavity, and the second housing and the loudspeaker vibrator form a second cavity. The adjusting mechanism includes a driving mechanism and a filling part. The driving mechanism drives the filling part to move, so as to change the volume of the filling part extending into the second cavity.

Abstract: A sewer pipe inflow and infiltration diagnosis method based on a distributed fiber-optic temperature measurement system is provided. The inflow and infiltration diagnosis method includes the following steps: S1: transmitting, by an optical time-domain reflectometer, an original optical signal to a temperature sensing fiber-optic cable provided in a sewer pipe; S2: feeding back, by the temperature sensing fiber-optic cable, a modulated optical signal to the optical time-domain reflectometer due to a temperature effect; S3: subjecting the modulated optical signal to photoelectric conversion, so as to acquire binary information; S4: converting the binary information into decimal information; S5: drawing a spatiotemporal map of a water temperature; and S6: eliminating a background noise value, identifying an abnormal water temperature point, determining an inflow and infiltration point of the sewer pipe, and determining an abnormal inflow and infiltration point of the sewer pipe.

Abstract: A sewer pipe inflow and infiltration diagnosis method based on a distributed fiber-optic temperature measurement system is provided. The inflow and infiltration diagnosis method includes the following steps: S1: transmitting, by an optical time-domain reflectometer, an original optical signal to a temperature sensing fiber-optic cable provided in a sewer pipe; S2: feeding back, by the temperature sensing fiber-optic cable, a modulated optical signal to the optical time-domain reflectometer due to a temperature effect; S3: subjecting the modulated optical signal to photoelectric conversion, so as to acquire binary information; S4: converting the binary information into decimal information; S5: drawing a spatiotemporal map of a water temperature; and S6: eliminating a background noise value, identifying an abnormal water temperature point, determining an inflow and infiltration point of the sewer pipe, and determining an abnormal inflow and infiltration point of the sewer pipe.

Abstract: An airfoil assembly and a method of forming the airfoil assembly, the airfoil assembly having a trunnion, a spar, and a set of inserts. The trunnion having a flared socket with an open top. The spar extending from the flared socket and through the open top. The spar having a first end located within the flared socket.

Abstract: A touch display panel includes a light-emitting display layer, first touch electrodes, a color resist layer, and second touch electrodes. The light-emitting display layer includes a plurality of light-emitting units arranged in an array; the first touch electrodes are located on the side of the light-emitting display layer facing a light-emitting surface of the touch display panel, and are arranged in a first direction parallel to the touch display panel; the color resist layer includes a plurality of color resist units arranged in an array; the color resist units are arranged right opposite to the light-emitting units, and the color resist layer and the first touch electrodes are arranged side by side; the second touch electrodes are located on the side of the light-emitting display layer facing the light-emitting surface of the touch display panel, and are arranged in a second direction parallel to the touch display panel.