14 results about "Area density" patented technology

The present application belongs to the technical field of industrial nondestructive online detection, and particularly relates to an online detection method based on average working current inversion of material area density. The present application extracts the average working current in the operation process of the terahertz thickness measuring equipment, and establishes an area density inversion fitting model in combination with the actually measured thickness of the terahertz, without the need of additional external area density detection hardware, thereby avoiding the high cost and safety protection burden caused by the ray detection, and also solving the problem that the optical detection is easily disturbed by surface environmental factors. The present application fully utilizes the electrical data generated by the operation of the terahertz thickness measuring equipment itself, and realizes the online continuous detection of the material area density without increasing the system complexity. The present application only uses the average working current as the core electrical input parameter to establish the model, reduces the influence of the voltage fluctuation and transient interference in the industrial field on the stability of the model, and improves the reliability of the area density inversion result.

The application relates to a double-sided electrode sheet manufacturing method and device and a double-sided electrode sheet. The method comprises the following steps: a mixture is respectively arranged in a first multi-roller calender mechanism and a second multi-roller calender mechanism, first, a first active material layer is formed by heat-combining a first side of a double-sided carbon-coated foil current collector and the mixture in the first multi-roller calender mechanism to obtain a single-sided electrode sheet, then, the area density of the single-sided electrode sheet is determined during the process of transferring the single-sided electrode sheet to the second multi-roller calender mechanism through a transmission component, a second active material layer is formed by heat-combining a second side of the double-sided carbon-coated foil current collector and the mixture in the second multi-roller calender mechanism to obtain a double-sided electrode sheet, the second active material layer is formed to obtain the double-sided electrode sheet, and the area density of the double-sided electrode sheet is determined. By adopting the method, the area densities of the two active material layers on the two sides of the double-sided electrode sheet can be accurately determined while the double-sided electrode sheet is manufactured.

The application provides an electrode sheet coating device and an electrode sheet coating method. The electrode sheet coating device comprises: a marking mechanism for spraying marks on one side of a substrate; a coating mechanism for coating slurry on both sides of the substrate with the marks staggered; a first measurer for acquiring position information of the marks and detecting a first area density of the substrate corresponding to the position of the marks; a second measurer for acquiring position information of the marks and detecting a second area density of the substrate and the slurry corresponding to the position of the marks; and a controller for acquiring a coating weight of the slurry according to the first area density and the second area density and adjusting a coating amount of the coating mechanism according to the coating weight. The coating weight of the slurry corresponding to the same mark position is acquired by the first measurer and the second measurer, so that the coating weight of the slurry of the front and rear parts in the feeding direction of the substrate is consistent, thereby ensuring the consistency of the weight of the electrode sheet.

Methods and systems involve a plurality of patterns, each pattern in the plurality of patterns comprising a plurality of edges. Methods and systems also involve determining a neighborhood open area density for the plurality of patterns; determining a geometric loading effect correction, wherein the geometric loading effect correction comprises a calculated offset from an edge of a pattern in the plurality of patterns, and wherein the calculated offset is determined using the neighborhood open area density; and adjusting the edge of the pattern in the plurality of patterns using the geometric loading effect correction.

The invention provides a surface density regulation and control method. The surface density regulation and control method comprises the following steps: starting a coating system; monitoring the surface density of the slurry on the surface of the pole piece; and the surface density is automatically regulated and controlled. According to the surface density regulation and control method provided by the invention, the problem of low surface density monitoring and regulation efficiency of an existing coating system can be solved.

Methods and systems involve a plurality of patterns, each pattern in the plurality of patterns comprising a plurality of edges. Methods and systems also involve determining a neighborhood open area density for the plurality of patterns; determining a geometric loading effect correction, wherein the geometric loading effect correction comprises a calculated offset from an edge of a pattern in the plurality of patterns, and wherein the calculated offset is determined using the neighborhood open area density; and adjusting the edge of the pattern in the plurality of patterns using the geometric loading effect correction.

The application discloses a composite sound-absorbing cloth, a manufacturing process and application. The first fiber cloth layer, the second fiber cloth layer, the third fiber cloth layer and the fourth fiber cloth layer of the composite sound-absorbing cloth are overlapped and bonded through a glue point layer. The composite sound-absorbing cloth, the manufacturing process and the application introduce the factor of the material density of the fiber cloth layer and limit the thickness of each fiber cloth layer, so that the difference in the area density of the fiber cloth layer can be reflected in the difference in acoustics. The fiber cloth layers with different area densities can produce superior sound-absorbing effects at different frequencies, respectively, and form interfaces with different structures between the fiber cloth layers with different area densities, thereby forming a dissipating effect. The glue point layer bonds the adjacent fiber cloth layers, so that the bonding effect is high quality, and the pores of the fiber cloth layers are retained at the same time, thereby greatly improving the acoustic effect of the composite sound-absorbing cloth.

The present invention relates to the technical field of composite material forming, and in particular to a method for preparing an absorbing prepreg based on reducing the deformation of a co-cured panel, comprising the following steps: preparing an absorbing resin, taking part of the absorbing resin and unfolding it into two groups of absorbing film units with the same surface density and compounding them with a transparent fiber to obtain an absorbing prepreg; co-curing the absorbing prepreg with a matrix prepreg into a composite panel I; designing the surface density ratio of the two groups of absorbing films according to the deformation of the composite panel I and the average vertical reflectivity in the X-band, and taking part of the absorbing resin and unfolding it into two groups of absorbing film units with different surface densities and a transparent fiber to obtain an absorbing prepreg based on the surface density ratio; and co-curing the final absorbing prepreg with a matrix prepreg into a composite panel. The technical solution can make the absorbing prepreg have non-uniform deformation, resist the deformation of the co-cured panel, and basically do not affect the stealth performance, greatly reduce the deformation performance of the co-cured parts, and meet the assembly requirements.

To increase a coefficient of effective wall length of a wooden structure wall without additionally attaching a reinforcement material or a stiffener and without increasing a specific gravity, a thickness, or both of a gypsum-based board. A gypsum-based load-bearing bearing board 10 for a wooden load-bearing wall includes a main material or a core material formed of a board-shaped hardened gypsum, and a paper member covering at least a front surface and a back surface of the main material or the core material, where inorganic fibers and an organic strength improver are added to the hardened gypsum so that a lateral nail resistance is 500 N or greater. The bearing board has an area density in a range of from 6.5 to 8.9 kg / m2 and a compressive strength of 6.5 N / mm2 or greater, and achieves an ultimate displacement (δu) that is greater than 20 × 10-3 rad and an initial stiffness (K) of 2.0 kN / 10-3 rad or greater in an in-plane shear test of the bearing wall, so that a ductility factor (µ) is increased not only by increase in the ultimate displacement but also by reduction in a yield point displacement (δv), thereby effectively or efficiently increasing a coefficient of effective wall length and short-term reference shear strength (P0) of the wooden load-bearing wall.

The present application relates to the technical field of pole piece coating quality control, and discloses a pole piece coating quality detection method and system based on reflection and transmission ultrasonic fusion, comprising: collecting the reflection and transmission ultrasonic signals of the pole piece and completing spatial alignment, extracting the first reflection wave amplitude, interface echo time difference and other characteristics from the reflection signal, extracting the energy, center frequency offset, propagation time and other parameters from the transmission signal, constructing a joint correlation model based on the propagation characteristics of ultrasonic waves in multi-layer media, and synchronously solving the coating thickness and area density; a high-dimensional defect sensitive vector is constructed by integrating the physical consistency characteristics of the two types of signals, and precise defect determination is realized by combining spatial position and change trend verification, the system cooperates six functional units to output quality distribution map and process capability index in real time, the information limitation and interference problem of the traditional single detection mode is overcome, and the high-precision monitoring demand of the whole process of the high-speed coating production line is met.

The application discloses a kind of area density synchronous measurement method, device, equipment and medium, wherein, area density synchronous measurement method includes: obtaining the running length L1 between the first area density instrument to the second area density instrument when synchronously running;Obtain the running length L2 between the first area density instrument to the second area density instrument when actually running;According to L1 and L2, determine the compensation value ΔL of the second area density instrument, wherein, ΔL=(L1-L2) / 2.In this way, in the actual measurement process, the second area density instrument is compensated by compensation value ΔL, so that the scanning track of the first area density instrument and the second area density instrument coincides, so that the area density of coating can be accurately calculated.

Provided is a wooden load-bearing wall including a gypsum-based load-bearing bearing board fastened onto a wooden structure wall base with fasteners. The load-bearing bearing board includes a main material or core material formed of a board-shaped hardened gypsum, and a paper member covering at least front and back surfaces of the main material or core material. The load-bearing bearing board has an area density or weight per unit area of 6.5 to 8.9 kg / m2, lateral nail resistance of 500 N or greater, and compressive strength of 6.5 N / mm2 or greater. Each of the fasteners is a metal nail including a head portion and body portion. An area ratio of an area of the head portion to a cross-sectional area of the body portion is set at a value of 6 to 13. The load-bearing wall has a value of an ultimate displacement (δu) being greater than 20×10−3 rad.

To enlarge a wall magnification of a wooden bearing wall without mounting a reinforcer or a stiffener additionally and without increasing the specific gravity and / or board thickness of a gypsum face material.SOLUTION: A gypsum bearing face material for a wooden bearing wall comprises a main material or a core material constituting a tabular hardened gypsum body having an inorganic fiber and an organic strength improver so as to exert a nail lateral resistance equal to or greater than 500 N, and a paper member covering at least front and rear surfaces of the main material or the core material. This bearing face material has an area density in a range of 6.5-8.9 kg / m2, shows an ultimate displacement (δu2) greater than 20×10-3 rad in an in-plane shear test and exerts an ultimate strength (a correction value) (Pu') greater than 7.6 kN. The wooden bearing wall using this bearing face material can achieve a short period reference shear capacity (P0) greater than that of the wooden bearing wall using the same type of the bearing face material having the area density equal to or greater than 9.0 kg / m2.SELECTED DRAWING: Figure 5

The application provides a kind of pole piece coating closed loop control method, by closed loop control process, whole area density is adjusted, width size is adjusted and single point area density is adjusted in sequence respectively, the adjustment of whole area density is first adjusted longitudinal area density by adjusting pump speed according to the detection result of thickness gauge, then adjust T block height and / or the distance of die two ends to pole piece to adjust transverse area density, then adjust the distance of die left and right two ends to pole piece and / or adjust pump speed to adjust width size according to the detection result of visual detector, finally, adjust single point area density by adjusting each adjusting T block according to the detection result of thickness gauge, each link is closed loop control, can realize full-automatic accurate adjustment, from whole area density to width to single point area density, can guarantee higher coating quality, while greatly reducing labor cost.