Patents
Literature
Patsnap Eureka AI that helps you search prior art, draft patents, and assess FTO risks, powered by patent and scientific literature data.

29 results about "Material volume" patented technology

Stock bin material volume detection method and device based on dynamic prompt and fusion verification

PendingCN121767427AImprove robustnessStable volume and lightweight detectionImage enhancementImage analysisCluster algorithmAlgorithm
The invention provides a stock bin material volume detection method and device based on dynamic prompt and fusion verification, and the method comprises the steps: collecting and correcting a stock bin image, and building the coordinate mapping of the image and a real space; performing quality evaluation on the image and filtering dynamic interference to obtain a static scene image; based on the static image, performing primary segmentation through a clustering algorithm to position a material slope, and adaptively generating a dynamic prompt point or calling a static prompt point template according to a positioning result; inputting the image and the prompt point into a segmentation model to obtain a fine segmentation mask; calculating a fine-grained volume by three-dimensional reconstruction based on the fine mask; when the primary segmentation succeeds, calculating a coarse-grained volume, carrying out cross validation on the coarse-grained volume and the fine-grained volume, and outputting a final volume or judging failure according to an error range; according to the invention, through a dynamic prompt and coarse and fine granularity fusion verification mechanism, the precision of material segmentation and the robustness under a complex working condition are significantly improved.
Owner:CHINA CONSTR EIGHT ENG DIV CORP LTD

Selective in-mold bonding 4D injection molding device and product deformation regulation and control method

The invention discloses a selective in-mold bonding 4D injection molding device and a product deformation regulation and control method, and belongs to the technical field of material molding. The device comprises an injection molding machine, a mold and a selective in-mold bonding system consisting of a mechanical arm, a gripper, an insert block and a control system. The method comprises the following steps: designing and preparing an insert serving as a part of a product; the insert block is positioned and fixed to a preset position of a mold cavity through a mechanical arm; injection molding is carried out, so that the molten material and the insert block are bonded in the mold; and ejecting the product. According to the invention, the specific insert block is selectively embedded into the mold cavity, non-uniform temperature and pressure gradients are actively established in space and time dimensions, and the spatial and temporal distribution difference of material volume shrinkage is regulated and controlled, so that the buckling deformation of a product is accurately controlled. And in combination with a response surface method or an artificial intelligence algorithm, process parameters can be reversely deduced according to target deformation, programmable control of product shapes and batch production of'different models' are realized, and the production flexibility and the intelligent level are greatly improved.
Owner:BEIJING UNIV OF CHEM TECH

Volume weight detection device for flexible porous material

The utility model relates to the technical field of material volume weight detection devices, and particularly discloses a flexible porous material volume weight detection device, which comprises a bearing part for placing a material to be detected; wherein in the length direction of the to-be-detected material, the plurality of bearing parts are arranged below the to-be-detected material at fixed intervals; the load detection part is used for detecting the load change of the bearing part; by using the device, the volume weight of the to-be-detected material can be quickly and simply detected, the to-be-detected material cannot be damaged, the volume weight of each product on a production line can be detected, and the quality control of the products can be effectively improved; besides, a terahertz wave detector does not need to be used, the overall cost of the detection device can be effectively reduced, the thickness of the to-be-detected material is not limited, and volume weight detection can be effectively carried out on the to-be-detected materials with different thicknesses.
Owner:BEIJING RETEC NEW ENERGY TECHNOLOGY CO LTD +1

Feeding device of medium-frequency induction furnace

The utility model belongs to the technical field of medium-frequency induction furnaces, and particularly relates to a medium-frequency induction furnace feeding device which comprises a material frame and a feeding box, sliding grooves are formed in the two side walls of an inner cavity of the material frame, an adjusting assembly is arranged on the material frame, a smashing assembly is arranged in the feeding box, and idler wheels are fixedly installed at the bottom of the material frame. The smashing assembly comprises a supporting plate fixedly installed on one side of the feeding box, and a connecting rod is rotationally connected into the supporting plate. According to the utility model, scrap iron can be pre-crushed through the crushing assembly, and the scrap iron can be treated into balls or particles through pre-crushing, so that the material volume is reduced, the material surface area is increased, and scrap iron materials are melted and heated more uniformly after being fed into the medium-frequency induction furnace, thereby accelerating the melting speed and improving the production efficiency; and in cooperation with the arrangement of the adjusting assembly, the height of the feeding box can be adjusted, so that the feeding height of the medium-frequency induction furnace is conveniently adjusted, the flexibility is improved, and feeding is facilitated.
Owner:CHONGQING LIANFENG SPECIAL STEEL CASTING & FORGING CO LTD

Method, system and controller for stockyard storage and handling

The application discloses a method, system and controller of a stockyard storage and transportation warehouse. The method comprises the following steps: receiving three-dimensional data of a stockpile before and after loading respectively sent by a measuring device; determining an initial material volume according to the three-dimensional data of the stockpile before loading; determining a target material volume according to the three-dimensional data of the stockpile after loading; determining a volume difference as a difference between the target material volume and the initial material volume; obtaining the weight of the stockpile before and after loading respectively; determining a weight difference according to the weight of the stockpile before and after loading; determining a volume-weight ratio according to the volume difference and the weight difference; and determining a target material weight as a product of the volume-weight ratio and the target material volume. The application determines the weight according to the volume-weight ratio by measuring the stockpile in three dimensions to obtain the volume, thereby reducing manual operation and improving the accuracy and efficiency of the warehouse.
Owner:HUNAN ZOOMLION CONCRETE MASCH STATION EQUIP CO LTD

Granule blanking equipment

The utility model discloses granule blanking equipment, which belongs to the technical field of granule blanking equipment and comprises a main storage tank and a frame body, the main storage tank is placed on the ground on the left side of the frame body, the top of the frame body is provided with a first-stage storage tank and a second-stage storage tank which are used for transferring materials, the first-stage storage tank is connected with the main storage tank through a conveying pipe, and the second-stage storage tank is connected with the main storage tank through a conveying pipe. The interiors of the primary storage tank and the secondary storage tank are communicated with each other, the primary storage tank and the secondary storage tank are sequentially arranged from top to bottom in the height direction, and the inner bottoms of the primary storage tank and the secondary storage tank are each provided with a detection structure used for detecting the volume and mass of materials. By means of the mode, materials fall into the feeding end of the conveying belt through the second-stage discharging port, and under the action of the width adjusting mechanism, particle materials are flatly laid on the conveying belt when falling, so that the materials are evenly distributed, and the machining quality is guaranteed.
Owner:HEBEI YIYI TECH DEV CO LTD

Intelligent volume flow measurement and control device for powder material in sintering burdening process

The invention discloses an intelligent volume flow measurement and control device for a powder material in a sintering burdening process, which is used in a continuous burdening process of a sintering production flow in the field of metallurgical industry. The intelligent powder material volume flow measurement and control device is composed of an inclined conveying belt, a powder material cross section shaping unit and an intelligent calculation and control unit of the powder material cross section shaping unit. The inclined conveying belt receives powder materials output from an outlet in the lower end of the batching bin, the motor with the controllable rotating speed firstly drives the carrier rollers to rotate, meanwhile, the belt is driven, the materials are pulled to move forwards together, and when the materials move to the position of the cross section shaping unit, the cross sections of the materials are shaped into trapezoid or triangular cross sections, and then the materials are output. Furthermore, the intelligent calculation and control unit performs intelligent calculation and control to obtain the volume flow of the powder material. The problems of unstable material flow control, large fluctuation and the like in an original batching system are mainly solved, and the method plays a key role in improving the production efficiency and benefit of a metallurgical sintering batching process.
Owner:NORTHEASTERN UNIV AT QINHUANGDAO

Buckle-assembled golf club bag chassis

PendingUS20260183627A1Industrial engineeringGolf club
The present invention discloses a buckle-assembled golf club bag chassis including: a chassis body; and a bottom ring member, in which the bottom ring member is sleeved on the periphery of the chassis body, the bottom ring member is provided with a buckle, the buckle includes a rotating portion connected with the bottom ring member, and a hook portion arranged at a free end of the rotating portion, the chassis body is provided with a buckling platform on an outer side wall thereof, and the buckling platform faces downward. This design is not only beneficial to the reduction of material volume during warehousing and transportation, but also has good structural stability, high bearing capacity, and improved quality of a golf club bag.
Owner:DONGGUAN T D C A PLASTICS& HARDWARE CO LTD

Method and system for operating bulldozer for leveling field

The invention relates to a method and a system for operating a bulldozer for leveling a field, comprising the following steps: detecting a surface profile of a sub-region of the field by means of a sensing system, the width of the sub-region being the blade width; calculating a theoretical material volume required for leveling in the current operation cycle based on the surface profile and a preset coordinate of a reference surface; performing identification and three-dimensional reconstruction on the material pile to obtain point cloud data of the material pile; and based on the point cloud data, determining a target segmentation position of the material pile according to the theoretical material volume, so that the target material volume segmented from the material pile according to the target segmentation position is equal to the theoretical material volume or equal to the smaller one of the theoretical material volume and the unit material volume. The unit material volume is the material volume which can be pushed away when the shovel blade is fully shoveled for one time; according to the target segmentation position, the actual material volume is segmented from the material pile; and the actual material volume is pushed to the sub-area so that the sub-area can be leveled.
Owner:CATERPILLAR (QINGZHOU) CO LTD

Forge piece blanking method based on simulation technology and control device

The invention belongs to the technical field of metal forgings, and particularly relates to a forge piece blanking method based on a simulation technology and a control device. The method comprises the steps that firstly, the machining allowance is designed on the basis of the outline of a part finished product, the total material volume needed for producing a forge piece and the corresponding bar size are determined based on the machining allowance, and then the whole part forging process is simulated according to the bar size based on machining equipment needed for producing the forge piece and physical and thermodynamic data of the bar, if the forge piece obtained after simulation has the forging defect, optimizing and adjusting the total volume of the material according to the forging defect, and simulating the whole forging process of the part again according to the bar size corresponding to the optimized and adjusted total volume of the material; and the forged piece obtained after simulation is analyzed again, if forging defects still exist, the material total volume and simulation analysis are repeatedly optimized till the forged piece obtained after simulation meets the requirement, the optimal blanking size is determined based on the corresponding bar size during final simulation, and the material utilization rate is increased.
Owner:LUOYANG LYC BEARING

Fluid supply inner cup and spray cup

The utility model provides a fluid supply inner cup and a spray cup, which comprise a flexible lining, one end of the flexible lining is provided with an opening with a flange, the other end of the flexible lining is provided with a sealing bottom, and a cup wall is connected between the opening and the sealing bottom. When one flexible lining and the other flexible lining are in relative movement of nesting or separation, a contact gap is generated between the rough area of the one flexible lining and the inner surface of the cup wall of the other flexible lining through rough friction. According to the soft thin cup, the rough lines are machined on the outer surface of the soft thin cup, rough friction is formed through the concave-convex characteristics of the lines, the ventilation capacity and the supporting capacity are further improved, and meanwhile the overall collapse effect of the soft thin cup is not affected. The rough area of the flexible lining and the scale area of the outer cup are arranged in a staggered mode, after the flexible lining and the outer cup are assembled, interference of the rough area on scale reading is avoided, it is guaranteed that the scales are clear and readable, and accurate measurement of a user on the liquid material volume is not affected.
Owner:QINGDAO HANBO PLASTIC TECH CO LTD

A forging blanking method and control device based on simulation technology

This invention belongs to the field of metal forging technology, specifically relating to a forging blanking method and control device based on simulation technology. The method first designs machining allowances based on the finished part contour, determines the total material volume required for forging production and the corresponding bar stock size based on the machining allowances, and then simulates the entire forging process of the part according to the bar stock size, based on the physical and thermodynamic data of the processing equipment and bar stock required for forging production. If the forging obtained after simulation has forging defects, the total material volume is optimized and adjusted according to the forging defects, and the entire forging process of the part is simulated again based on the bar stock size corresponding to the optimized total material volume. The forging obtained after simulation is analyzed again; if forging defects still exist, the total material volume is optimized and the simulation analysis is repeated until the forging obtained after simulation meets the requirements. The optimal blanking size is determined based on the bar stock size corresponding to the final simulation, thus improving material utilization.
Owner:LUOYANG LYC BEARING

A path planning method and system applied to a full-automatic cargo cleaning machine

The present application relates to the field of wharf cleaning, especially to a path planning method and system applied to a full-automatic cleaning machine, the method comprising: obtaining environment perception data and equipment parameter data of a material taking point in a ship cabin, intelligently grouping and priority sorting, and constructing multiple efficient material taking sequences. Considering comprehensively the material volume of the material taking point, the distance between the material taking points, the position of the material stacking point, and the moving cost and obstacle avoidance demand, the current material taking cost of the possible displacement point is calculated; according to the possible displacement point, the residual material taking cost possibly existing in the future path is analyzed, the current material taking cost and the residual material taking cost are added to obtain the comprehensive material taking cost. The displacement point with the minimum comprehensive material taking cost is selected through iteration, and the material taking path is optimized. Through intelligent grouping, priority sorting and path optimization, the present application significantly improves the operation efficiency of the cleaning machine, reduces the energy consumption, and enhances the obstacle avoidance capability, ensuring safe and efficient completion of material cleaning in a complex environment.
Owner:上海酷酷机器人有限公司

Structural topology optimization method considering anisotropic strength constraint of additive manufacturing

The invention relates to the technical field of topological optimization, in particular to a structural topological optimization method considering additive manufacturing anisotropy strength constraint, which comprises the following steps: constructing an orthotropic material constitutive model; expanding a classic variable density method, and performing collaborative optimization on a finished product direction angle serving as a key design variable and a topological structure; a customized Hoffman failure function is adopted to construct an optimization model which aims at minimizing the structure flexibility and considers material volume constraint and failure strength constraint at the same time; finite element analysis considering process induced anisotropy is carried out, and structural mechanical response is calculated; and updating a design variable based on a sensitivity analysis result, and inhibiting an iterative oscillation problem induced by angle variable fluctuation in combination with an adaptive feasible region reduction strategy to realize stable convergence of an optimization process. According to the method, the anisotropic characteristics induced by the additive process are integrally considered, the topological configuration and the material forming direction are collaboratively optimized, and a high-performance light-weight structure can be obtained.
Owner:HENAN UNIVERSITY

Extension region complex fault zone quantitative simulation experiment device

The invention discloses a quantitative simulation experiment device for a complex fault zone in an extension region, which belongs to the technical field of physical simulation of geological structures and comprises a left-deformed alloy steel plate of a pressed structure, a right-deformed alloy steel plate of the pressed structure, a left-deformed alloy steel plate and a right-deformed alloy steel plate of the pressed structure. The alloy steel plate with the left deformation of the pressing structure and the alloy steel plate with the right deformation of the pressing structure are connected through a fixing pin penetrating through the alloy steel plate with the left deformation of the pressing structure and the alloy steel plate with the right deformation of the pressing structure; a front auxiliary volume expansion movable baffle and a rear auxiliary volume expansion movable baffle. Different stress directions are simulated by moving the position of the motor, multi-stage structure superposition and transformation are simulated by replacing or combining the deformation modules, the movable baffle is utilized to adapt to material volume expansion, and the deformation process can be observed through tempered glass. The device realizes the quantitative simulation of the formation and evolution of the complex fault zone in the stretching region under the multi-stage tectonic movement.
Owner:NORTH CHINA UNIVERSITY OF SCIENCE AND TECHNOLOGY

An adaptive intelligent loading system

This utility model discloses an adaptive intelligent loading system, comprising a belt conveyor, a buffer bin, a quantitative bin, and a loading chute connected in sequence. The buffer bin has four sets of gates at its bottom, which are electrically connected to a PID controller. The PID controller controls the opening and closing of the gates and can adjust the gate opening degree. The quantitative bin is equipped with a weighing sensor, a material level sensor, and a three-dimensional measuring instrument. This utility model uses the three-dimensional measuring instrument to calculate the material volume in the quantitative bin in real time, and combines this with the density data to dynamically adjust the gate opening degree. This achieves adaptive loading under changing material characteristics, solving the problem of difficulty in self-matching loading parameters due to changes in the loaded material. It effectively improves loading accuracy and significantly enhances the intelligence and work efficiency of the loading station.
Owner:ZHONGMEI KEGONG INTELLIGENT STORAGE TECH CO LTD

Ball mill lining plate and ball mill

The utility model provides a ball mill lining plate and a ball mill, the ball mill lining plate comprises a lining plate base layer and at least one pair of transverse metal ceramic groups oppositely arranged on the lining plate base layer, the transverse metal ceramic groups comprise one row or at least two rows of ceramic groups, each ceramic group comprises at least two parallel metal ceramics, and transverse fixing grooves are formed in the bottoms of the metal ceramics; a transverse extending block which extends into the transverse fixing groove and is matched with the transverse fixing groove is arranged on the lining plate base layer; according to the utility model, the metal ceramic is made into a relatively small block body which is embedded into the lining plate of the ball mill, so that the metal ceramic is cast and melted into a whole for use as the lining plate of the ball mill; the wear resistance of the ceramic is 10 times higher than that of the traditional lining plate material; meanwhile, through the lifting strips on the lining plate base layer, the probability that the materials are rolled to a high position can be greatly increased, the impact crushing efficiency is improved, abrasion is small, and the service life is greatly prolonged.
Owner:ZHUZHOU CHUANGRUI GAOQIANG CERAMICS CO LTD

Method and device for machining a workpiece with a machining beam

In a process for machining a workpiece (10) with a focused machining beam (50a), a scanning process is performed in which the machining beam (50a) is successively directed to machining locations where the material is processed by ablation or modification. All machining locations are located in one machining plane (70-1 to 70-5). This scanning process is repeated multiple times, with the machining locations each time being located in different machining planes (70-1 to 70-5). In this way, a three-dimensional distribution of machining locations is obtained. During the scanning process, a focus (62) of the machining beam (50a) is guided along a virtual three-dimensional focus pattern (72).The virtual focus pattern (72) is defined such that, despite thermally induced changes in the optical properties of optical elements (100-1 to 100-4, 102, 106, 108, 58, 60) and / or material volumes of the workpiece (10) lying in the beam path of the processing beam (50a), all processing locations lie in the processing plane (70-1 to 70-5).
Owner:CARL ZEISS SMT GMBH

Alloy cutter with anti-tipping structure

The utility model discloses an alloy cutter with an anti-tipping structure, which comprises a cutter shaft, one end of the cutter shaft is fixedly connected with a cutter head, the surface of the cutter head is fixedly provided with a chip removal groove, the outer edge of the chip removal groove is fixedly provided with a step blade edge, the surface of the step blade edge is provided with a reinforcing blade, and the reinforcing blade is provided with an anti-tipping structure. A streamline blade edge is arranged on the surface of the reinforcing blade, and a fixing screw is in threaded connection with the middle of the surface of the reinforcing blade. The stepped blade edge is arranged on the edge of the outermost side of the chip groove, the design of the stepped blade edge is beneficial to dispersing loads in the cutting process, and therefore the concentration phenomenon of local stress is effectively reduced, the design is beneficial to restraining vibration and shaking of the tool, the machining quality of the surface of the tool bit can be remarkably improved, and the machining efficiency is improved. According to the stepped structure, more free surfaces are increased, so that the rapid crushing of the material volume is promoted, and the reduction of cutting force and the reduction of energy consumption are facilitated.
Owner:SHENZHEN JOEBEN DIAMOND CUTTING TOOLS CO LTD

Intelligent scheduling system and method for intelligent palletizing robot

This invention provides an intelligent scheduling system and method for an intelligent palletizing robot. The method includes the following steps: S1: acquiring material point cloud data and identifying material dimensions using a depth camera, and obtaining material weight; S2: calculating material volume based on material dimensions, and obtaining density value by combining material weight; calculating the stroke parameters of the pneumatic gripper, and generating a palletizing scheme through an intelligent planning algorithm; S3: controlling the opening and closing of the pneumatic gripper based on the stroke parameters to grasp the material, and executing the palletizing scheme to complete material stacking; S4: detecting the shape of the stacked material, so that the WMS storage location scheduling module delivers the material to a suitable storage location based on the detection results. This invention addresses the morphological characteristics of flexible materials by employing a size recognition method combining convex hull analysis and outlier filtering, improving the measurement accuracy of irregular objects and solving the problems of slow shape change, high breakage, and inefficient scheduling of multi-specification flexible bulk materials such as tea in the palletizing process.
Owner:SHANGHAI SMARTSTATE TECH CO LTD

Structural lightweight design method and system for structural circuit integrated printing

The invention discloses a structural lightweight design method and system for structural circuit integrated printing. The method comprises the following steps: importing a device, a lead and a design space model, voxelizing by utilizing a symbol distance field and distributing an attribute tag, and resolving space conflicts among the models through a priority rule; generating a corresponding bearing structure for the device and the wire according to an integrated printing process requirement, and constructing an agent model of the device; taking the bearing structure as a growth core, and adopting a generative topological optimization algorithm based on sensitivity analysis to iteratively grow a material in a design domain until the material volume constraint is met and an objective function is converged; and finally, carrying out surface smoothing and geometric smoothing treatment on the obtained topological optimization structure, and outputting a lightweight three-dimensional model which can be directly used for integrated printing. The problems of traditional topological optimization in the aspects of multi-material coupling, process constraint integration and structure connectivity guarantee are effectively solved, and the integrated design which can be manufactured, is high in efficiency and is light in weight is achieved.
Owner:NANJING UNIV OF SCI & TECH

Automatic design method for diaphragm plate of variable cross-section UHPC-steel composite beam bridge

The invention discloses an automatic design method for a diaphragm plate of a variable cross-section UHPC-steel composite beam bridge. The automatic design method comprises the following steps: constructing a finite element model of a target composite beam bridge; loading an unbalance loading lane load and a constraint condition for the finite element model, and carrying out calculation to obtain a full-bridge equivalent distortion normal stress; selecting a plurality of diaphragm plate units of the diaphragm plate with the minimum influence on the full-bridge equivalent distortion normal stress, and hiding the diaphragm plate units in the finite element model; calculating repeatedly to obtain the full-bridge equivalent distortion normal stress, and hiding the corresponding diaphragm plate units until the total amount of the remaining diaphragm plate units meets the design volume; and taking the diaphragm plate form at the moment as the final diaphragm plate form of the target composite beam bridge. According to the method, under the condition that the arrangement distance of the diaphragm plates and the material performance are determined, automatic design is carried out by setting the minimum warping normal stress as the target under the limitation of a certain diaphragm plate material volume, the bridge distortion effect is reduced to the maximum extent, and energy conservation, material reduction and structural performance are both considered.
Owner:SHANDONG TRAFFIC PLANNING DESIGN INST

A method and apparatus for measuring the volume of material in an irregular bin

The application provides a method for measuring the volume of irregular silo materials, comprising: obtaining point cloud data of a silo to be measured; preprocessing the point cloud data to obtain material data; determining whether the silo to be measured is an irregular silo, and if so, obtaining the volume of the material in the silo to be measured based on the material data according to a first volume calculation algorithm, and if not, obtaining the volume of the material in the silo to be measured based on the material data according to a second volume calculation algorithm. The application solves the problem that the existing equipment for measuring the volume of materials cannot meet the complex full-silo condition, has low accuracy in real-time measurement of the volume of materials and has high cost.
Owner:INTAILI TECH (TIANJIN) CO LTD

Design method and system for pipe orifice sealing head of bulging forming pipe and pipe orifice sealing head

The invention relates to the technical field of bulging forming, in particular to a method and system for designing a pipe orifice sealing head of a bulging forming pipe and the pipe orifice sealing head. The method comprises the following steps that three-dimensional shape data of the end of a pipe orifice after a pipe fitting is subjected to a preorder machining procedure are obtained through computer simulation; on the basis of the three-dimensional shape data, determining an opening taper tolerance zone of the pipe opening; calculating the excess material volume of the pipe orifice relative to the tolerance reference under the offset tolerance zone based on the offset tolerance zone; the shape of a sealing head is designed based on the three-dimensional shape data and the volume of the redundant material, the sealing head comprises a guiding section, a shaping section, a special-shaped sealing section and a pushing section which are sequentially connected, the special-shaped sealing section is provided with a storage tank, and the volume of the storage tank is determined according to the volume of the redundant material; by means of the method, the pipe fitting with the special-shaped pipe opening after the pipe bending and pre-forming procedures can be effectively sealed, and the material supplementing stability and the pipe opening defect repairing capacity in the bulging forming process are improved.
Owner:BAOLONG ANHUI AUTO PARTS

Method for manufacturing electromagnetic component with specified dielectric constant through 3D printing

The invention discloses a method for manufacturing an electromagnetic component with a specified dielectric constant through 3D printing, and relates to the technical field of electronic device manufacturing, and the method comprises the following steps: determining the working frequency and the size of a metamaterial unit; establishing a theoretical relationship between the dielectric constant and the material volume ratio; selecting a specific structure of the metamaterial unit; the volume ratio is regulated and controlled by changing structural parameters; manufacturing a sample by using a 3D printing technology and testing a dielectric constant; establishing a function relationship between the structural parameters and the dielectric constants; structure parameter values of electromagnetic components with required dielectric constants are reversely deduced according to the function relation; according to the method, the dielectric constant value required according to the application scene can be accurately realized, the method is suitable for the communication field, the military field and the navigation field, the wall thickness size of the material structure in the metamaterial unit can be conveniently obtained, then a model is modeled, and the method has the advantages of being simple in structure, convenient to operate and high in practicability. And the electromagnetic component with the required specified dielectric constant is produced by using a 3D printing technology.
Owner:HUBEI CHUCK TECH CO LTD

Methods and means for simultaneous casing integrity evaluation and cement inspection in a multiple-casing wellbore environment

An x-ray based cement evaluation tool for measurement of the density of material volumes within single, dual and multiple-casing wellbore environments is provided, wherein the tool uses x-rays to illuminate the formation surrounding a borehole, and a plurality of detectors are used to directly measure the density of the cement annuli and any variations in density within The tool uses x-rays to illuminate the casing surrounding a borehole and a plurality of multi-pixel imaging detectors directly measure the thickness of the casing The tool includes an internal length having a sonde section, wherein the sonde section further includes an x-ray source; a radiation shield for radiation measuring detectors; sonde-dependent electronics; and a plurality of tool logic electronics and PSUs. Other systems and subsystems appropriate for carrying out the foregoing are also disclosed, as are a plurality of example methods of use therefor.
Owner:VISURAY TECH

Reliability Topology Optimization Method for Multiphase Material Compliant Mechanisms Considering Stress Constraints

This invention provides a reliability topology optimization method for multiphase material compliant mechanisms considering stress constraints. The method includes defining design conditions for the multiphase material compliant mechanism; calculating the element stiffness and stress of the multiphase material compliant mechanism; using the K-S function to aggregate the stress constraints of each phase material into a global constraint, with the optimization objective being minimizing the total material volume fraction, and using stress constraint reliability, output displacement, and the volume fraction of each phase material as constraint conditions; constructing a function based on stress constraints; establishing a two-layer cyclic topology optimization model for the reliability of the multiphase material compliant mechanism based on a separable stress interpolation model; using the moving asymptote method to update design variables and find the most likely failure point; and determining whether the iteration satisfies the convergence condition. If so, a topology configuration of the multiphase material compliant mechanism that meets the stress constraint reliability requirements is obtained. This invention results in a multiphase material compliant mechanism with better reliability.
Owner:EAST CHINA JIAOTONG UNIVERSITY

A marine composite pipe and a method of making the same

PendingCN122328618AInsulation layerCrazing
This application discloses a marine composite pipe and its preparation method. The marine composite pipe comprises, from the inside out: a sealed inner lining layer, an interlocking pressure-bearing layer, a gradient buffer insulation layer, and an outer protective layer. The interlocking pressure-bearing layer includes at least two layers of fiber-reinforced tape, which are wound to form at least one anti-crushing layer and one tensile layer. A biomimetic micro-anchoring intercalation layer is laid between the anti-crushing layer and the tensile layer. The anti-crushing layer, the tensile layer, and the biomimetic micro-anchoring intercalation layer are solidified to form a three-dimensional mechanical interlocking structure. When the marine composite pipe is subjected to transient impact or irregular dynamic load, controllable micro-slippage and hysteretic elastic deformation will occur between the interlocking points. This process can effectively absorb and dissipate impact energy, disperse the concentrated impact stress into a larger material volume, thereby inhibiting the initiation and rapid propagation of cracks, significantly improving the interlayer bonding strength, avoiding interlayer shear failure, and enhancing the overall mechanical bearing capacity and impact resistance of the pipe body.
Owner:BAOJI TIANLIAN HUITONG COMPOSITE MATERIAL CO LTD