550 results about "Material selection" patented technology

The invention discloses a panel vertical seam water stop structure repair effect evaluation method, which comprises the following steps of: firstly, synchronously obtaining surface crack and internal defect data through cooperative detection of infrared thermal imaging and ultrasonic flaw detection; and carrying out space alignment on point cloud data generated by three-dimensional laser scanning and an ultrasonic detection result, and establishing a BIM model containing a crack three-dimensional form. A practical engineering environment is simulated in a laboratory to carry out material accelerated aging and test key indexes such as an elastic recovery rate, a base surface state is evaluated through a temperature and humidity sensor array in a construction stage, a six-axis grouting robot is adopted to execute accurate filling, a curing process is monitored by a synchronous pre-embedded optical fiber sensor, and after aging is simulated by combining a hydraulic test with climate, a construction period is shortened. A distributed optical fiber network is used for continuously collecting deformation data, a comprehensive evaluation model is constructed based on mechanics, durability and sealing indexes, and finally material selection and process parameters are optimized through machine learning.

The invention relates to the technical field of electric field measurement, in particular to a non-contact electric field sensor design method and system, and the method comprises the steps: carrying out the electromagnetic analysis and shielding structure topological optimization based on the environment characteristics of a transformer substation, and generating mechanical design parameters; shielding structure parameters are formed through material selection and electrode optimization, a three-dimensional electromagnetic field simulation model is established, and multi-scene interference simulation and sensitivity verification are carried out; and configuring a temperature compensation circuit and optimizing circuit parameters, performing dynamic response analysis and material matching degree evaluation through a high-frequency material test platform, and finally generating sensor specification parameters. According to the method, the anti-interference performance, the measurement precision and the stability of the sensor are remarkably improved, and the method is suitable for high-precision electric field measurement in a complex electromagnetic environment.

The invention provides experimental equipment and method for simulating filling and sealing of carbon dioxide in a goaf, and the experimental equipment comprises a simulation system, a slurry injection system, a gas injection system, a data acquisition and processing module, a recording, analyzing and displaying module and a data acquisition system. A simulated overlying strata of the simulation system naturally collapses to form a porous medium space model, slurry and carbon dioxide are injected into the porous medium space model through the slurry injection system and the gas injection system, and data acquisition is conducted on the curing process of the carbon dioxide through the data acquisition system; and the data is transmitted to the recording, analyzing and displaying module through the data collecting and processing module. According to the invention, the influence of carbon dioxide on the slurry solidification behavior and the solidification reaction penetration depth can be comprehensively researched, and a scientific basis is provided for optimizing material selection, proportion design and injection process parameters in practical engineering.

The invention relates to the technical field of virtual reality and indoor and outdoor design, in particular to a VR indoor and outdoor design virtual material selection system based on eye movement tracking. Comprising a VR display and eye movement tracking module used for presenting a virtual design space to a user and capturing eye movement data of the user in real time; the fixation point recognition and target object judgment module is used for calculating real-time fixation point coordinates of the user based on the eye movement data; the dynamic material menu management module is used for outputting the target object information according to the judgment module; the sight line interaction and material rendering module is used for receiving a selection instruction of a user on a specific material in the dynamic material menu through a sight line; and the central processing module is used for coordinating and controlling data streams and execution logics of the modules. By integrating the eye movement tracking technology and the dynamic material menu management, the intelligent material selection interaction driven by the fixation point is realized.

The invention discloses a waterproof safety evaluation method and system for waterproof engineering, and belongs to the technical field of waterproofing of constructional engineering. According to the method, the waterproof safety level is comprehensively evaluated by determining an engineering structure defect quantitative index, setting a reference crack width Ws, measuring a waterproof material or engineering re-waterproof performance index Wm and calculating a waterproof safety coefficient K = Wm / Ws. The system evaluates grades based on the method, and selects corresponding waterproof materials and construction methods according to engineering importance, expected deformation and service life. According to the invention, concepts of'waterproof performance 'and'waterproof safety coefficient' are put forward for the first time, a quantitative evaluation system oriented to waterproof performance is established, the defects of heavy form and light actual effect of current specifications are effectively overcome, the transformation from'form compliance 'to'performance standard' is realized, the reliability, durability and economy of waterproof engineering are remarkably improved, and the method is suitable for popularization and application. And a scientific basis is provided for engineering design, material selection and acceptance.

The invention belongs to the technical field of stress corrosion tests, and particularly relates to a dry-wet alternating environment stress corrosion test device and method.The test device is simple in structure, convenient to operate and suitable for stress corrosion tests of metal materials of dry-wet alternating parts of ships, wharfs and other equipment facilities. Therefore, the corrosion performance and the residual life of the metal and the component thereof under the stress action of pulling, bending and the like in the dry-wet alternate harsh marine environment are measured, and a basis is provided for material selection, structural design and the like of key stress parts such as related equipment facilities. The test method is based on corrosion equivalent conversion, the seawater medium flow velocity is controllable, stress corrosion test parameters of the dry-wet alternating environment can be reasonably determined, and corrosion damage of the dry-wet alternating part of the equipment under the long-term stress service condition can be rapidly reproduced under the condition that the stress corrosion mechanism and the damage development process are not changed; the test time is greatly shortened, the test cost is reduced, and rapid screening and examination verification of novel structures / materials of equipment are realized.

The invention discloses a non-standard goods shelf intelligent design method and system based on a parameterized model, and relates to the technical field of computer aided design, and the method comprises the following steps: collecting parameters, and carrying out abnormal value elimination and dimension unified processing to generate a standardized demand parameter set; defining core structure parameters and establishing a component association rule, and constructing a parameterized basic model through three-dimensional modeling; the storage rack structure is optimized by combining storage mechanics and material mechanics characteristics, stress concentration is reduced, and deformation under rated load is controlled; a simulation environment is built for statics and dynamics simulation, and a simulation test report is output; screening an optimal parameter combination to generate a detailed design scheme; and receiving user feedback, adjusting parameters and material selection in combination with production feasibility and cost budget, and repeating optimization simulation steps to generate a final scheme. Efficient design of the non-standard goods shelf is achieved through parametric modeling and intelligent optimization, the structure is safe and reliable, the material utilization rate is high, and the design quality and efficiency are remarkably improved.

The invention relates to an application that utilizes artificial intelligence to enhance project management in construction and repair industries. The system includes a user computing device, an application server, and a database server. The application server processes project data, including blueprints, to generate materials lists, integrates with online marketplaces to facilitate purchasing, and employs machine learning for product recommendations. The system also uses predictive analytics to forecast project deliveries and prevent backorders, while optimizing resource allocation through efficient supplier and material selection. The software application features an AI-powered chat, job planner, marketplace, and cart, providing a comprehensive platform for real-time collaboration among contractors, suppliers, and manufacturers. This innovation streamlines project workflows, reduces errors, and improves overall efficiency in managing construction and repair projects.

The invention relates to the technical field of sewage treatment, and particularly discloses a high-porosity slow-release microelement anti-mineralization sulfur autotrophic denitrification filter material and a preparation method thereof. The sulfur autotrophic denitrification filter material is of a core-shell structure, a complex of sulfur, volcanic rock micro powder and a curing fungicide is used as an inner core, and a hydrophobic polymer coating layer and a porous ceramic bonding layer are sequentially coated on the surface of the inner core; the hydrophobic polymer coating layer is a hydrophobic breathable composite film formed by crosslinking a polydimethylsiloxane prepolymer and calcium alginate. The volcanic rock natural trace elements are utilized to realize waste control by waste, surface mineralization is effectively prevented through the hydrophobic middle layer, the activity of the microbial inoculum is protected in combination with a low-temperature flexible sintering process, and the whole device has the advantages of high porosity, light weight, quick start, long service life, low backwashing energy consumption and the like. Compared with the prior art, the invention has remarkable innovativeness and creativity in the aspects of structural design, material selection and process integration.

The invention discloses a filling adhesive and flexible plate matching evaluation method, a sample and a manufacturing method thereof. The evaluation method comprises the following steps: manufacturing a standard sample; obtaining test conditions of the standard sample in advance; wherein the test conditions comprise test temperature, test humidity and test time; according to the test conditions, carrying out reliability test on the standard sample; and according to the standard sample subjected to the reliability test, obtaining an evaluation result of the matching of the bottom filling glue and the flexible plate. According to the method, the standard sample for evaluating the matching property of the underfill adhesive and the flexible plate is manufactured by a simple technological process, so that the evaluation of the matching reliability between the underfill adhesive and the flexible plate under the environmental influence of humidity and temperature at the same time can be conveniently realized by using the standard sample in a material selection stage, and the risk of product failure is reduced; and thus, the product yield in the production stage is improved.

The invention provides a 10kV explosion-proof motor stator winding turn-to-turn insulation breakdown risk control method and system, and relates to the technical field of motor manufacturing, and the method comprises the steps: determining the existence of a turn-to-turn insulation defect through analyzing a creepage breakdown phenomenon in batch production, and positioning breakdown points which intensively appear at the head and tail turns of a lead end, obtaining a breakdown point position characteristic; based on the position characteristics of the breakdown points, main causes of insulation weakness are obtained through analysis; based on the main reason of weak insulation, a single-sided polyester film reinforced mica tape is selected as an inter-turn insulation material; and performing process verification on the turn-to-turn insulating material to obtain structural characteristic parameters of the insulating material. According to the method, the reliability and consistency of turn-to-turn insulation of the 10kV explosion-proof motor stator winding are improved through full-process control of data-driven defect diagnosis, material selection, process optimization, insulation strengthening and performance verification.

The invention discloses a hard alloy cutter life prediction and material selection method and system based on working condition parameters, and relates to the technical field of hard alloy cutter manufacturing, and the method comprises the steps: collecting cutting force distribution and temperature gradient data through a cutter tip area stress sensing array and a temperature sensing array, and constructing stress-temperature-wear synergistic effect data; calculating a fatigue damage characteristic value based on the synergistic effect data to obtain a wear prediction correction coefficient; compensating the tool nose stress field by using the correction coefficient, and outputting life prediction data; and designing a carbide phase gradient distribution structure according to the synergistic effect data and the fatigue damage characteristic value, adjusting a carbide grain orientation angle in combination with the wear prediction correction coefficient and the life prediction data, outputting optimal material structure parameters, and realizing optimal selection of the hard alloy cutter material. According to the method, the cutter service life prediction precision is improved, and the dynamic optimization of the material structure is realized.

The application relates to the technical field of image processing, and provides a model material replacement method and device for a design drawing. The method comprises the following steps: determining a target model from each model of a design drawing according to a received material selection instruction; obtaining a target material map corresponding to the material selection instruction from each material map of the target model; and merging the target material map, a light map, a diffuse reflection map and a reflection refraction map of the design drawing to obtain a model image of the target model in the design drawing; wherein the design drawing is an image obtained through rendering; the light map, the diffuse reflection map and the reflection refraction map are each layer obtained after the design drawing is rendered. The model material replacement method for the design drawing provided by the application can reduce the calculation amount of the model in the design drawing when the material is replaced, and reduce the resources consumed when the model material is replaced.

This invention discloses a method for overlapping construction of waterproofing systems in existing subway lines. It relates to the field of underground engineering waterproofing construction technology and includes: Step 1, current status investigation and deformation assessment; Step 2, overlapping structure system design; Step 3, key material selection and process matching; Step 4, refined overlapping construction process; and Step 5, full inspection after each process. This invention's method for overlapping construction of waterproofing systems in existing subway lines, through Step 1, involves structural deformation monitoring and analysis and diagnosis of the existing waterproofing layer; Step 2, involves deformation adaptation structure design and differential deformation compensation design; Step 3, involves material selection and process innovation; Step 4, involves base treatment, interface treatment, expansion joint and node construction, and reinforcement layer construction; and Step 5, involves process inspection. This method, tailored to the characteristics of existing subway lines, enables the effective combination of different waterproofing materials, adapts to continuous deformation, and ensures long-term reliability.

The invention belongs to the technical field of micro-nano processing, and particularly relates to a Pt-HSQ-based high-resolution X-ray Fresnel zone plate and a preparation method thereof. According to the X-ray Fresnel zone plate, a Pt-HSQ metal-inorganic material system is adopted, a diffraction structure with a large aspect ratio and Pt material quasi-periodic dense stripes specially needed by an X-ray zone plate lens is formed through electron beam lithography and an ALD process, and diffraction focusing from a soft X-ray wave band to a hard X-ray wave band and imaging with an amplification function are achieved. The wave zone plate has excellent mechanical stability, and the irradiation resistance and morphology retentivity of the wave zone plate under high-energy irradiation are remarkably improved. And high-resolution X-ray focusing elements with different energy wavebands and different focal lengths can be prepared according to geometric design and material selection of the wave zone plate. The lens is suitable for microscopic imaging, coherent diffraction imaging, X-ray spectrum, nanometer detection and other scenes of a synchrotron radiation or off-line laboratory X-ray light source, and has wide popularization value and application prospect.

The utility model belongs to cable technical field especially relates to a kind of bend-resistant sensor cable for high-speed train set, the cable with high elasticity fiber rope as center filling rope, filling rope outside evenly distributes multiple copper alloy conductors, conductor is covered in proper order insulating layer, first wrapping layer, shielding layer, second wrapping layer and sheath layer;Wherein insulating layer uses thermoplastic polyester elastomer, first wrapping layer is thin type flame-retardant cloth, shielding layer is composed of tinned copper wire and fiber silk, second wrapping layer is thin type non-woven fabric, sheath layer is crosslinking type polyurethane.The utility model by optimizing conductor material, insulation and sheath material selection and multilayer structure design, significantly improve the bend-resistant performance of cable, while having excellent electrical insulation, shielding anti-interference and flame retardancy, can long-term stable adapt to frequent bending, vibration and complex environment in high-speed train set operation, meet the reliable transmission demand of sensor signal.

This invention provides a high-entropy alloy nano-coating high-temperature oxidation-resistant modification preparation process, belonging to the field of coating modification technology. The high-entropy alloy nano-coating high-temperature oxidation-resistant modification preparation process specifically includes the following steps: S1. Target material selection and preparation; S2. Alloy substrate treatment; S3. Low-temperature nanocrystalline coating deposition; S4. Coating densification treatment; S5. Low-temperature recovery annealing; S6. Pre-oxidation treatment. Through the synergistic process of low-temperature preparation of the alloy nano-coating, densification annealing, and pre-oxidation, the high-temperature strength and phase stability of the coating are improved by utilizing the lattice distortion effect. A thermodynamically stable protective oxide film of aluminum oxide and chromium oxide is generated in situ on the surface, solving the problems of traditional chromium-based coatings such as few main components, poor oxidation resistance, and short lifespan. This significantly improves the service reliability and safety of nuclear reactor structural materials under high-temperature irradiation environments.

This utility model discloses a vibrating feeding disc with adjustable screening size, relating to the field of material selection. The vibrating feeding disc with adjustable screening size includes a main body, with a hopper at the top inner part of the main body. Multiple vibrating motors at preset angles are installed at the bottom of the hopper, causing the material in the hopper to circulate and move in a predetermined direction within the hopper. A discharge pipe is fixedly welded to the side wall of the hopper, with its end extending into the hopper to naturally form a feed inlet. A baffle is movably installed on the side wall of the hopper, with its bottom end extending to the surface of the feed inlet. By loosening the fixing screws and pushing the baffle up and down with the handle, the bottom end of the baffle blocks the end of the discharge pipe, thereby adjusting the size of the exposed opening at the end of the discharge pipe. The disc is then fixed by tightening the fixing screws, thus enabling the screening of materials of different sizes.

The application discloses a method for prolonging the service life of an aluminum alloy extrusion die and improving the forming precision of a profile, and relates to the technical field of metal plastic working.The specific steps of the method are as follows: finite element simulation analysis, stiffener design and forming, material selection and treatment, surface strengthening and assembly treatment, and cooling circuit processing.The application comprehensively predicts the stress distribution of the aluminum alloy extrusion die in the working process through the finite element simulation analysis technology, and innovatively designs an asymmetric stiffener structure.The structure is customized according to the stress direction and gradient of the stress concentration area, and the asymmetric stiffener effectively breaks the stress transmission path of the traditional symmetric stiffener through the unique radial offset and staggered angle design, thereby realizing the redistribution and accurate dispersion of the stress field.The design not only reduces the stress peak value of the key area of the die, but also improves the fatigue resistance of the whole die, thereby effectively prolonging the service life of the die.

The invention provides a data-driven forward material selection method and system for an automobile multi-material body, and relates to the technical field of automobile research and development, and the method comprises the steps: obtaining a material selection target constraint condition and candidate material data of the automobile body; on the basis of the candidate material data, vehicle candidate material schemes are generated, multiple data-driven vehicle target material selection models are called to select the vehicle candidate material schemes in sequence, and vehicle feasible material selection schemes meeting material selection target constraint conditions are obtained; a non-dominated sorting algorithm is called to screen the feasible material selection schemes of the whole automobile, and candidate recommendation schemes of automobile body material selection are obtained; and multi-criterion decision making is carried out on the candidate recommendation schemes to obtain a final recommendation scheme of automobile body material selection. The method is used for solving the technical problem of low material selection process efficiency caused by complex vehicle body materials, material selection constraints and numerous research and development requirements when forward material selection is carried out by depending on manual experience in the prior art in automobile research and development.

The utility model relates to the technical field of gummed paper, in particular to puncture-resistant medical gummed paper which comprises a release paper layer, and a plurality of gummed paper components are arranged at the top of the release paper layer. The gummed paper assembly comprises a base material layer, a reinforcing layer, an antibacterial layer, a breathable layer and a gummed layer which are sequentially arranged from top to bottom; an elastomer coating is arranged at the top of the base material layer; the reinforcing layer is of a net-shaped structure; a plurality of ribs are fixed at the bottom of the breathable layer, and a breathable groove is formed between every two adjacent ribs; a glass fiber grid layer is embedded in the gluing layer; by arranging the elastomer coating, the net-shaped reinforcing layer and the glass fiber grid layer, the anti-puncturing performance of the gummed paper is enhanced, the gummed paper is prevented from being damaged when punctured by sharp objects, and the protection function is guaranteed. The antibacterial layer can inhibit bacteria, and the design of ribs and ventilation grooves of the ventilation layer is beneficial to ventilation. The material selection of each layer in the design is reasonable, and the medical requirements on safety, reliability and air permeability can be met.

The utility model relates to a three-jaw clamping type assembling device for an electric connector in a narrow space of a fire control system, and belongs to the technical field of assembling device design. According to the device, three bosses which are located at the end of the device and form 120 degrees with one another are embedded into three bayonets of an annular nut to complete locking operation, the width and the length of the three jaws are precisely designed and tested and verified, meanwhile, material selection and surface treatment are conducted according to the application scene of the device, and the rigidity and the corrosion resistance of the device are further improved. According to the device, one operator can accurately clamp and efficiently fasten the electric connector of the fire control system under the conditions that the assembling operation space is limited and the light inside a cabinet is insufficient. The device can be used for replacing a traditional assembly mode that sharp-nose pliers are used for installation, the installation effects of accurate clamping and firm locking are achieved, and the assembly efficiency and the assembly quality are improved.

The invention discloses an environment-friendly stadium seat and a metal plate heat transfer printing forming process thereof. The environment-friendly stadium seat and the metal plate heat transfer printing forming process are suitable for public stadiums such as report halls and theaters. The seat comprises standing feet, a seat body and a leaning body, the seat body and the leaning body are both designed in a mode that an inner lining plate (a stress component) and an outer decorative plate (a decorative component) are separated, the inner lining plate is of a composite structure of a multi-layer plate and a steel frame and bears main loads, the outer decorative plate is an aluminum alloy plate or a cold-roll steel plate which is 1.5-3 mm thick, and the outer decorative plate is processed through a high-temperature wood grain heat transfer printing technology after being processed through stamping, welding and the like. The seat body is provided with high-density polyurethane shaping sponge and flame-retardant wear-resistant environment-friendly fabric, the backrest body is provided with a turnover mechanism which can be folded and stored, and the outer decorative plate is detachably connected with the inner lining plate. The metal plate heat transfer printing process comprises the steps of material selection, cutting, stamping, welding, polishing, pretreatment, plastic powder spraying and curing, high-temperature heat transfer printing and cooling demolding, and parameters are accurate and controllable. Formaldehyde release is completely eradicated, the structure is stable, the appearance is vivid, wear resistance and fire prevention are achieved, the service life is prolonged by 30% or above, the production efficiency is improved by 40%, and environment friendliness and practicability are both considered.

The application provides a new type of pin shaft, which comprises a hollow shaft and a core shaft embedded in the hollow shaft. The application is obtained by analyzing the working condition of the pin shaft, comprehensively considering the material selection, structure design, heat treatment process and machining process, and selecting 30CrMnSiA high-strength alloy structural steel to redesign the structure. The original Φ380 integral solid structure is optimized into a combined structure, the hollow shaft is installed with the core shaft, the structure of the core shaft is optimized and the machining process is optimized, different heat treatment processes are adopted for the hollow shaft and the core shaft, the two are cold assembled after machining, the interference fit is realized at room temperature, the mechanical properties of the assembled pin shaft are ensured, the problem that the mechanical properties of the material core cannot be reached is effectively avoided, the overall mechanical properties of the combined pin shaft are greatly improved, the strength and toughness of the material are combined, and the fracture toughness and fatigue strength are obviously improved.

The invention discloses a marine air bottle condensate water residue discharge monitoring device based on friction nanometer power generation, which comprises a short pipe section, a fixing device, a TENG sensor unit, a wire, a sensor electronic module and a cable waterproof joint, and is characterized in that the fixing device is fixed on the inner wall of the short pipe section, the TENG sensor unit is fixed in a clamping groove of the fixing device, and the wire is fixed on the TENG sensor unit; the sensor electronic module is fixed on the short pipe section, one end of the cable waterproof joint is connected to the short pipe section, the other end of the cable waterproof joint is connected with the sensor electronic module, the TENG sensor unit is connected with the sensor electronic module through a wire, and the wire is led out of the short pipe section from the cable waterproof joint to be connected to the sensor electronic module. The marine air bottle condensate water residue discharging monitoring device based on friction nanometer power generation can be arranged in a short pipe with a small drift diameter, space is saved, through module design, elements are convenient to install and replace, the structure is simple, material selection is not limited, corrosion resistance is achieved, pollution to the environment is reduced, the manufacturing cost is low, the customizable degree is high, and limitation of ship types is avoided.

The invention relates to the technical field of automobile wire harnesses, and discloses an automobile bending-resistant insulation protection wire harness, which comprises a wire unit, an insulation protection layer, an elastic buffer layer and a bending-resistant reinforcing assembly, each wire unit is a twisted conductor formed by twisting metal plain wires on the periphery of a fiber core. The insulation protection layer wraps the periphery of the wire unit and is made of a high-performance material so as to guarantee the insulation performance; the elastic buffer layer wraps the periphery of the insulating protective layer, and a plurality of hollow buffer cavities are uniformly distributed in the elastic buffer layer; a plurality of positioning rings of the bending-resistant reinforcing assembly are arranged in the buffer cavity, a plurality of flexible reinforcing ropes are distributed in the length direction of the wire harness, and the two ends of the flexible reinforcing ropes are fixed to the positioning rings. By optimizing structural design and material selection, bending stress is effectively dispersed, stress concentration is avoided, the bending resistance and the insulation protection grade of the wire harness are remarkably improved, the requirement of a high-pressure platform of a new energy automobile is met, the structure is reasonable, the weight is low, and the automobile lightweight trend is met.

The invention discloses a digital material selection method and material selection equipment for an AIGC home design scene, relates to the technical field of artificial intelligence, and is used for improving the accuracy of selecting a physical entity material according to an AIGC image. In the method, a material selection device identifies and quantifies a non-physical rendering style fingerprint of an AIGC image, and rejects the non-physical rendering style fingerprint from a feature level to obtain an intrinsic texture topology tensor representing a texture structure; and aligning the intrinsic texture topology tensor to a feature space of a real physical building material through a preset domain generalization feature mapping network, thereby forcibly ignoring the interference of an AIGC rendering style in a retrieval process, focusing on the comparison of the texture topology structure, and further improving the accuracy of selecting a physical entity material according to the AIGC image.

This invention relates to the field of waste incineration power generation, and discloses a material selection system and method for waste heat recovery from incineration flue gas using multiple heat exchangers. The system includes: a flue gas extraction unit, a flue gas diversion unit, multiple modular heat exchangers, a water circuit monitoring and control unit, a condensate collection unit, and a flue gas mixing unit. The method includes: S1, flue gas conditioning; S2, water circuit conditioning; S3, heat exchange experiment; S4, parameter monitoring; S5, corrosion and performance analysis; and S6, material selection. This invention solves the problem in the prior art of lacking selection of heat exchangers at different exhaust temperatures and being unable to monitor the actual operation and corrosion resistance characteristics of heat exchangers made of different materials.

The utility model relates to the technical field of testing of equipment erosion caused by annulus particles, and discloses an underground annulus particle erosion experiment device which comprises an annulus simulation bin, an experiment cavity is formed in the annulus simulation bin, experiment equipment is arranged in the experiment cavity, and a particle erosion arc groove is formed in the inner wall of the experiment cavity; the testing mechanisms are located at the upper end and the lower end of the annulus simulation bin, each testing mechanism comprises a bearing assembly, a pressing assembly and a rotating assembly, the bearing assemblies are located at the bottom of the annulus simulation bin, the pressing assemblies are located at the top of the annulus simulation bin, and the rotating assemblies are located in the pressing assemblies; through the arrangement of the testing mechanism, an underground annular particle erosion experiment can be simulated, the erosion effect of particles on equipment under different working conditions can be simulated through the erosion experiment, the erosion resistance and the service life of the equipment can be evaluated, a scientific basis is provided for design, material selection and maintenance of the equipment, and it is ensured that the equipment can safely and reliably operate underground.

The invention relates to the technical field of ultrahigh strength steel delayed cracking performance testing, in particular to an ultrahigh strength steel delayed cracking performance testing device and a testing method thereof.The testing method includes the following steps that firstly, a rectangular strip sample is cut from a to-be-tested ultrahigh strength steel plate, the width of the sample is 10-20 mm, the thickness of the sample is 0.5-6.0 mm, and the thickness of the sample is 10-20 mm; performing oil removal, grinding and ultrasonic cleaning, and recording a surface treatment mode; step II, bending the sample into a bending state according to a U shape, and enabling the surface of the outer layer to generate maximum surface strain, the method can be used for rapid screening and can also be used as a preposed step for threshold and life evaluation, the consistency and comparability of results between different laboratories and engineering units can be improved, and the method is suitable for large-scale popularization and application. And through hydrogen-free contrast, fracture microscopic analysis, diffusible hydrogen detection and finite element check, macroscopic crack behaviors are associated with microscopic fracture characteristics and hydrogen content, so that the capability of judging a fracturing mechanism is enhanced, and a reliable basis is provided for engineering material type selection and process verification.