241 results about "Test material" patented technology

Provided in the embodiments of the present application are a large-model performance assessment method and a related device. The method comprises: acquiring structured text description of a test material, wherein the structured text description comprises information of the test material in a plurality of dimensions; inputting the structured text description and a test question into a large language model, so as to acquire an evaluation true value; inputting the test material and the test question into a large model under test, so as to acquire an answer under test of the test question; and inputting the evaluation true value, the test question and the answer under test into the large language model, so as to acquire an assessment result for the answer under test.

The invention discloses a production method of thick-wall pipeline steel X65MS for polar regions, which adopts ultra-low carbon and high Ni + casting blank secondary cogging extreme cooling + steel plate online ultrafast cooling, breaks the component design of the conventional pipeline steel standard, solves the problem of poor drop hammer low-temperature toughness of thick-wall acid-resistant pipeline steel at-55 DEG C, and has the transverse and longitudinal yield strength of 460-560MPa, the tensile strength of 590-650MPa, the yield ratio of less than or equal to 0.80, the tensile strength of 590-650MPa and the tensile strength of less than or equal to 0.80. The uniform elongation is 10%-12%, the impact value at-55 DEG C is 400-500 J, and the drop weight at-55 DEG C is 90%-95%; when the product is soaked in an NACE solution for 96 hours in an HIC test, CLR, CTR and CSR are all 0; sSC test: four-point bending constant load nominal yield is 90%, and the sample is soaked for 720 hours, and the surface of the sample has no crack; the CTOD value of the crack tip opening displacement of the CTOD test material at-55 DEG C is greater than or equal to 0.6 mm.

The invention relates to the technical field of material thermal performance testing, and discloses a material heat conductivity coefficient automatic testing method based on a heat flow gradient method. The method comprises the following steps: firstly, constructing a test environment topology network, collecting three-dimensional structure parameters and environment thermodynamic parameters of a tested material, and inputting the parameters into a thermal field simulation system to generate an internal heat flow distribution model; and analyzing internal cavity distribution characteristics according to the three-dimensional structure parameters, matching the internal cavity distribution characteristics with a cavity characteristic-heat source layout mapping table to determine a steady-state heat source layout scheme, and activating a heat flow gradient analysis device when multiple heat sources are needed. A heat conduction parameter database is called, heat source power parameters and temperature acquisition parameters are extracted based on environmental thermodynamic parameters, the heat source power parameters comprise spacing, axial angles and the like, and the temperature acquisition parameters comprise thermocouple types and acquisition frequencies; and finally, simulating temperature field evolution through a heat flow gradient analysis device, outputting and analyzing related data, and generating a parameter optimization instruction to adjust heat source configuration. According to the method, multiple links are coordinated, material structures and environmental factors are integrated, and automation of the testing process is achieved.

The invention relates to the field of metal material testing, in particular to equipment for testing material performance, which comprises a testing platform, the testing platform is provided with a detection mechanism, a supporting mechanism, an extrusion mechanism and a power mechanism, the extrusion mechanism and the power mechanism are arranged on the supporting mechanism, and the extrusion mechanism comprises an extrusion block and a reversing unit for adjusting the orientation change of the extrusion block. At least one end of the extrusion block is open, the extrusion block is used for shearing and crushing a to-be-tested substrate, and a rotating handle is arranged on the extrusion block; and the power mechanism comprises a shearing driving unit and a pressure driving unit which are used for driving the extrusion block to move. By implementing the scheme, the test efficiency of the magnesium alloy material under various test conditions is improved.

The invention discloses a building material mechanical testing system based on multi-algorithm fusion, and belongs to the technical field of building material testing, and the system comprises an initial damage quantification module which is used for obtaining detection information of a tested material test piece before mechanical loading and generating a quantitative evaluation result; the loading and information acquisition module is used for applying a mechanical load to the tested material test piece with the generated quantitative evaluation result and acquiring a mechanical response signal and a microscopic state signal of the tested material test piece; the damage analysis module is used for calling a preset second data processing algorithm and analyzing and generating a dominant damage path; and the diagnosis and prediction module is used for integrating the associated data atlas and the dominant damage path information, generating a material performance diagnosis report and constructing a prediction model through a preset third data processing algorithm. According to the method, the initial damage of the tested material test piece is quantified, so that systematic deviation of a test result caused by neglecting the initial damage is corrected.

The utility model discloses a material testing device under erosion and cavitation coupling action, which comprises a container, an ultrasonic transducer, an injector head and a circulating device, a placing table is arranged in the container, the ultrasonic transducer is used for being arranged above the placing table, the injector head is arranged at the lower end of the ultrasonic transducer, and the circulating device is arranged on the placing table. The circulating device comprises a booster pump, a liquid inlet of the booster pump is communicated with the container, and a liquid outlet of the booster pump is connected with the injector head through a pipeline; in the using state, the ultrasonic transducer is electrically connected with an ultrasonic power source through a wire. According to the utility model, the erosion medium is pumped into the injector head through the booster pump, and meanwhile, the ultrasonic transducer enables the erosion medium to generate a large number of bubbles in the injector head, so that the erosion medium with the bubbles impacts a test material at a high speed, and the test condition of the hydraulic mechanical material is met.

The invention provides a material performance testing method and system based on low-temperature environment simulation, and relates to the technical field of material performance testing. A dynamic stress reference signal containing multi-dimensional stress variables such as a temperature change gradient variable and an environment medium interaction variable is generated in combination with application scene dynamic low-temperature environment parameters, and a multi-dimensional performance coupling acquisition process is started based on the dynamic stress reference signal. Acquiring a multi-dimensional performance response data set of mechanical deformation response, physical property evolution, chemical stability and the like, performing coupling correlation analysis on the multi-dimensional performance response data set and a reference signal, calculating a performance response coupling coefficient and generating a performance coupling correlation model; and according to the performance coupling correlation model, identifying a dynamic stress threshold interval of material performance nonlinear change, finally, based on the threshold interval and the model, generating a material low-temperature performance test execution scheme containing dynamic threshold regulation and control logic, and adjusting a stress variable combination according to real-time performance response.

The invention relates to a test tool and method for testing the shear strength of a material interface. The tool comprises a chuck, a fixing block, a base and a sliding block, a guide rail groove is formed in the base, one side of the guide rail groove is connected with the sliding block, and the other side of the guide rail groove is connected with the fixing block; the fixing block is provided with a fixing hole and a fixing block threaded hole, a pin penetrates through the fixing hole, the sample hole and the sliding block hole to fix the sample, and a bolt is fixed to the base through the fixing block threaded hole. The sliding block is provided with a sliding block sliding rail, a sliding block threaded hole and a sliding block hole, and the sliding block sliding rail is arranged in the guide rail groove of the base and fixed through a bolt; the chuck is located on the lower side of the base and serves as a device for connecting the base and the stretcher. According to the invention, the interface shear strength performance test can be carried out on the sample with any thickness, the bonding surface of the sample is always kept parallel to the axial force line in the initial sample mounting process and the tensile test process, and the bonding surface of the sample base material and the lap joint material in the initial test state is prevented from being abnormally damaged.

The invention discloses a method for simultaneously testing the thickness and refractive index of a material based on terahertz time-domain spectroscopy, which relates to the technical field of material testing and comprises the following steps: acquiring a reference signal and a sample signal by using a transmission-type terahertz time-domain spectroscopy system, and positioning a key pulse peak through an automatic peak value recognition algorithm; frequency domain phase information is obtained by combining fast Fourier transform, and then the phase difference between the main pulse and the echo is calculated; based on an optical path difference model, a relation equation set of the double-pulse phase difference and material parameters is established, the material thickness and the refractive index are obtained through inversion, and prior refractive index information is not needed; and finally, processing the data by adopting a local weighted regression smoothing algorithm to obtain comprehensive characterization parameters of the material. By adopting the method, high-precision, rapid and lossless thickness and refractive index measurement is realized, the applicability and the flexibility of measurement are remarkably improved, and the method has a wide industrial popularization prospect.

The invention provides a ground simulation test method and device based on ground irradiation source combination parameter optimization. The method comprises the steps that an in-orbit space irradiation environment is simulated, an orbit environment particle energy spectrum of a to-be-tested space orbit is obtained through calculation, and an in-orbit PKA distribution spectrum in a to-be-tested material is calculated based on the orbit environment particle energy spectrum; based on the obtained on-orbit PKA distribution spectrum, determining optimal combination parameters of one or more groups of ground irradiation sources through a specified optimization algorithm and fitting calculation, so that a PKA energy spectrum generated by the ground irradiation sources in the to-be-measured space material is matched with the on-orbit PKA distribution spectrum, and an optimal fitting energy spectrum is obtained; and calculating and determining a critical dose rate, and calculating to obtain an acceleration fluence and a maximum acceleration multiplying power for guiding a ground acceleration test so as to carry out a ground simulation test of the to-be-tested space material. According to the application, the combined parameters of the ground irradiation source are optimized, and a more accurate ground simulation test is realized.

The utility model provides a cold-drawing hot-pressing fatigue testing machine for a sealing material, which relates to the technical field of fatigue testing machines and comprises a test supporting seat, a pressure detection plate for pressure detection is fixedly mounted in the test supporting seat, and a negative pressure component for sucking the material is arranged in the middle of the test supporting seat. And a lifting support for lifting adjustment is fixedly mounted at the top end of the test supporting seat. The testing machine has the advantages that the rotatable test supporting seat is arranged in the testing machine to clamp and fix a tested material, the negative pressure assembly is arranged in the center of the test supporting seat to perform negative pressure adsorption on the tested material, and the test materials with various structures can be conveniently clamped and fixed by combining with the clamping of the test supporting seat; according to the material fixing device, material loosening caused by the limited clamping contact area is avoided, the stability of test material fixing can be effectively enhanced, the applicability of material fixing can be improved, and fixing tests can be conducted on unused materials easily.

A hot melt adhesive film bonding strength testing device comprises a bottom plate, two supporting columns are fixed to the bottom plate, a transverse plate is installed between the two supporting columns, a lifting electric cylinder is fixedly installed on the transverse plate, a testing box is further installed at the front ends of the two supporting columns, and a plurality of stretching clamping assemblies are further fixedly arranged at the bottom of a top plate. A hot melting mechanism is further assembled at the front end of the top plate, and a temperature and humidity controller and a main controller are further arranged at the top of the test box. In the testing process, the testing plate can be made of different materials, the molten adhesive film is placed in the sample groove, testing materials of different materials can be tested in the same batch, and the temperature and the humidity can be controlled in the testing process, so that the testing result is more accurate. Secondly, through the testing method, the relation between the stripping angle and the bonding strength can be recorded in real time in the stripping process, a plurality of samples can be measured synchronously, the testing efficiency is high, and it is guaranteed that each sample is not affected by temperature and humidity in the testing process.

The invention discloses a high-precision SMD MELF thermistor function testing machine. The high-precision SMD MELF thermistor function testing machine comprises a rack; the constant-temperature oil tank is arranged on the rack, and a temperature equalizing pump is arranged on the constant-temperature oil tank; the material distributing mechanism comprises a magnetic groove and a material distributing disc, the magnetic groove is formed in the rack, the material distributing disc is located at one end of the magnetic groove, the material distributing disc is rotationally connected to the rack, a plurality of first material grooves are formed in the material distributing disc at equal intervals in the circumferential direction of the material distributing disc, and a first magnetic block is arranged at one end of each first material groove; the test material distribution disc is rotationally connected to the rack, a plurality of second material grooves are formed in the test material distribution disc at equal intervals in the circumferential direction of the test material distribution disc, a second magnetic block is arranged at one end of each second material groove, the second material grooves are right opposite to the first material grooves at the transfer points of the material distribution disc and the test material distribution disc, and the partial area of the bottom of the test material distribution disc is located in the constant-temperature oil groove. Compared with the prior art, the MELF thermistor resistance testing device can solve the problems that an existing MELF thermistor resistance testing device is low in efficiency and poor in precision.

The present application relates to a kind of material ignition effect online test system and method thereof, belong to material ignition effect research and application technical field, solve the technical problems of low heat flow loading level and the insufficient online test ability of material pyrolysis and ignition characteristic in the process of material ignition effect research.Its test system includes heat flow loading subsystem, effect online test subsystem, combustion chamber.Heat flow loading subsystem is used to apply heat flow irradiation to the material to be tested, effect online test subsystem is used to collect the ignition effect parameters of the material to be tested, and the combustion chamber provides irradiation space for the material to be tested.The test method includes test system self-checking, preparation of the material to be tested, the material to be tested is placed in the combustion chamber, test system setting, heat flow loading system setting, material ignition effect data acquisition and analysis steps.The present application is used for the online test of material ignition effect.

The utility model discloses an electronic product anti-falling performance testing device, which relates to the technical field of electronic product testing and comprises a shell, a height adjusting assembly is mounted on the shell, a clamping assembly is mounted on the height adjusting assembly, and the clamping assembly is used for fixing an electronic product. A bearing part is installed in the lower end of the rear side of the shell through a bearing, a plurality of test plates are rotatably installed on the bearing part at equal angles through torsional springs, a driving part is installed between the lower portion of the bearing part and the shell and used for driving the bearing part to rotate, and a jacking part is installed in the lower end of the shell and used for jacking the bearing part to rotate. And the jacking piece is used for driving the test plate positioned above the jacking piece to turn over. According to the anti-falling performance testing device for the electronic product, different types of grounds are simulated through different testing plates, so that various possible falling ground environments of the electronic product in the actual use process are more comprehensively simulated, and the tested materials are conveniently collected.

A kind of gas alarm gas-permeable membrane blockage identification method and system, it is related to the field of testing materials by means of determining the physical properties of materials, in the method, reference benchmark value is determined according to the output signal collected by photosensitive element;The first number group of real-time output signals is converted into the first number group of real-time light intensity data;The real-time maximum light intensity value and the real-time minimum light intensity value are screened out;The difference between the real-time maximum light intensity value and the real-time minimum light intensity value is divided into the second number of intervals, and the proportion in the corresponding real-time light intensity data is calculated;The cumulative sum of the second number of intervals and the proportion is calculated, to obtain real-time determination value;In the case where it is determined that real-time determination value is greater than the preset multiple of reference benchmark value, it is determined that the gas-permeable membrane is not blocked;In the case where it is determined that real-time determination value is not greater than the preset multiple of reference benchmark value, it is determined that the gas-permeable membrane is blocked.The present application is used to improve the accuracy of gas alarm gas-permeable membrane blockage identification.

The utility model belongs to the field of viscous-elastic material testing, and particularly relates to a viscous-elastic material testing support and a testing system, and the viscous-elastic material testing support comprises a support and a plurality of groups of deformation and pressure testing clamps which are not in contact with one another; a mounting hole is formed in the bracket, the bracket is used for placing a to-be-tested material, and the to-be-tested material covers the mounting hole; the deformation and pressure test fixture comprises a first chuck, an elastic sheet and a second chuck which are arranged in sequence, the other end of the first chuck is used for being connected to one of two parallel sides of a to-be-tested material, and the other end of the second chuck is used for being connected to the other of the two parallel sides of the to-be-tested material; and a strain gauge is pasted on the elastic sheet. The viscous-elastic material testing bracket provided by the utility model is accurate and reliable in displacement data measurement of a to-be-tested material under hydrostatic pressure. Therefore, deformation of all planes on the to-be-tested material and installation of the pressure test fixture are realized, and the isotropic performance of the material can be measured conveniently.

The utility model discloses a magnetic suspension type pipeline fluid viscosity detection device, which relates to the field of liquid detection, and comprises a material conveying pipe and a rotary viscometer body, the side wall of the material conveying pipe is communicated with a material taking pipe, the upper surface of the material conveying pipe is fixedly connected with a detection box, and the lower side of the detection box is communicated with the material taking pipe through an L-shaped pipe. The piston is driven by the two shifting plates to move in the material taking pipe, then the threaded rod is rotated, the threaded rod is in threaded connection with the threaded sleeve to drive the plug cover and the piston to move together till the end opening connecting position of the material taking pipe is completely plugged by the plug cover, at the moment, part of flowing liquid enters the material taking pipe, and then through pushing and extracting, the material taking pipe is opened. The whole operation process is rapid and convenient, outward sampling is not needed, the sampling time of a traditional testing method is saved, normal conveying of materials is not affected, more importantly, waste of the tested materials is avoided, and practicability is improved.

This invention belongs to the field of testing materials technology, specifically relating to a non-destructive testing device and method based on radiation. It includes a base and an XY-axis displacement mechanism connected to each other, and further includes: an X-ray tube and a filter collimation channel, vertically connected sequentially to the XY-axis displacement mechanism; a heat dissipation assembly disposed inside the X-ray tube; and a heat insulation locking assembly disposed inside the filter collimation channel and communicating with the heat dissipation assembly. The heat dissipation assembly contains multiple heat-conducting media distributed at designated locations within the X-ray tube, with one type of heat-conducting medium flowing sequentially from the heat insulation locking assembly, the X-ray tube, to the heat dissipation assembly. This invention improves the temperature uniformity of the X-ray base environment required for testing materials, solving the problem of radiation filter plates deviating from design values ​​due to accelerated oxidation at high temperatures, thereby improving the flaw detection accuracy during material testing.

The invention belongs to the technical field of material analysis, and provides an elastic constant measuring method and system and an ultrasonic device.According to the method, a sandwich structure is combined and placed in an acoustic coupling medium, ultrasonic data penetrating through the sandwich structure are collected in a transmission-type omnidirectional ultrasonic mode, a five-layer sound ray tracking model can be constructed, and the elastic constant can be measured; and by utilizing a particle swarm optimization algorithm, the optimal ultrasonic sound velocity is calculated by comparing the actual propagation time of the ultrasonic waves in the five-layer sound ray tracking model with the predicted propagation time, and then the elastic constant of the to-be-tested material is obtained. According to the scheme provided by the invention, the problem that a thin-layer material ultrasonic characterization method in the prior art is easily influenced by a measurement error introduced by wrinkles is solved, an idealized measurement environment state is provided, and the equipment complexity and the measurement cost are reduced by innovatively utilizing a transmission-type omnidirectional ultrasonic mode; lossless, accurate and reliable measurement of the elastic constant of the material is realized.

The invention relates to an online diagnosis and early warning method for performance degradation of a multi-layer thermal insulation material in a liquid hydrogen temperature zone, and belongs to the technical field of extremely low temperature thermal insulation material testing. According to the method, an acoustic sensing module and a controllable micro excitation module are integrated on a traditional heat leakage testing system; the method comprises the following steps: collecting acoustic emission signals generated by a material under thermal cycle and active micro-excitation, extracting multi-dimensional characteristic parameters, and establishing a correlation diagnosis model of acoustic emission characteristics and the internal pre-tightening force state and macroscopic thermal performance of the material in combination with standard sample data in a known state; by utilizing the model, the internal mechanical contact state of the to-be-tested material can be evaluated in an online, lossless and real-time manner, and early warning can be performed on the degradation trend of the heat insulation performance of the to-be-tested material. According to the method, the defects of lagging and destructiveness of a traditional testing method are overcome, the root cause of performance degradation is monitored, and a guarantee is provided for reliability evaluation and service life prediction of the material.

The invention relates to the technical field of material testing, and discloses a method for testing hydrogen induced cracking of a material in a high-pressure hydrogen environment, which comprises the following steps: firstly, preparing an extended compact tensile sample based on size data of a standard wedge-shaped opening loading sample and a standard compact tensile sample; then carrying out fatigue crack prefabrication on the extended compact tensile sample through a fatigue testing machine, and carrying out shape conversion to obtain a standard wedge-shaped opening loading sample with fatigue cracks, and taking the standard wedge-shaped opening loading sample as a target wedge-shaped opening loading sample; applying a load to the tail end of the fatigue crack on the target wedge-shaped opening loading sample, and placing the target wedge-shaped opening loading sample in a high-pressure hydrogen environment to determine the length of the current hydrogen-induced crack; and finally, determining a stress intensity factor threshold value of the to-be-tested material according to the initial applied stress intensity factor, the current hydrogen-induced crack length and the standard value of the hydrogen-induced crack length. According to the method, not only can a more accurate hydrogen-induced delayed cracking stress intensity factor threshold value be obtained, but also the test cost can be effectively reduced.

The application discloses a method for automatically detecting the light column inclination angle of light column laser paper, and relates to the technical field of testing material performance by measuring material physical properties, which comprises the following steps: fixing the light column laser paper on a rotating platform; irradiating the surface of the light column laser paper with a linear light source at a set angle γ, and collecting the reflection image of the surface at the same time; controlling the rotating platform to rotate the light column laser paper and collecting images; calculating the evaluation value of each collected image and the corresponding rotation angle; comparing each evaluation value, setting the collected image corresponding to the evaluation value with the largest value as the target collected image; and obtaining the light column inclination angle α1 according to the set angle γ and the rotation angle β1 corresponding to the target collected image. The method can detect the light column inclination angle of the light column laser paper with any initial deviation, solves the problem of the maximum allowable inclination angle limitation in the prior art, and greatly enhances the fault tolerance of the initial placement position of the light column laser paper.

The application discloses an accessory list generation method and device, equipment and medium, and relates to the technical field of computers, which comprises the following steps: obtaining an accessory bar code and a production task sheet, determining accessory information from the production task sheet, and comparing the accessory bar code with the accessory information; if the information comparison is passed, generating a serial number based on the accessory bar code, and saving the accessory bar code and the serial number to a local device; judging the accessory material type based on the serial number, if the accessory material type is non-test material, checking the serial number, if the checking is passed, generating an accessory list according to the accessory bar code and the serial number. Through the above technical scheme of the application, the material loss in the production process can be avoided, and the accuracy and traceability of the accessory list generation are improved.

The utility model discloses a temperature control device suitable for an ultra-fast cold and hot impact test box, and relates to the technical field of impact test boxes. Comprising a sleeve, and one side of the top of the sleeve fixedly communicates with an air inlet pipe; a vertical pipe is fixed on one side of the sleeve, and a plurality of vent holes are formed in a pipe body of the vertical pipe positioned in the sleeve; a supporting plate is fixed in the vertical pipe, and a plurality of air inlets are formed in a plate body of the supporting plate. When the cold and hot impact testing device is used, a material to be tested is placed in the cold and hot impact testing box and is positioned at the bottom of the temperature control device, the controller controls the heating wire to heat, outside air enters the sleeve through the air inlet pipe by virtue of air flow which is refrigerated by the compressor through the air pump, and then enters the vertical pipe through the vent hole; after the heating wire heats outside air, the outside air is directly discharged through the first air outlet hole so as to be in contact with the to-be-tested material, due to control over cold and hot air flows, the to-be-tested material is cooled and heated at ultra-fast speed, and the experiment efficiency is improved.

The invention relates to the technical field of oil and gas drilling, in particular to a trapping efficiency testing device for an explosion-proof engine. The device is characterized in that a set of testing device is provided for implementation of an explosion-proof engine trapping efficiency test, a testing material bin is of a detachable structure, the bin wall is transparent and visible, a set of testing particle flow sensor is arranged at a discharging port of the testing material bin and matched with a control system to control the gas amount of a gas inlet of the testing material bin, and the set discharging amount of the testing material bin is kept; the trapping net of the trapping box is of a detachable structure, and the requirement for installation of trapping nets of different test particle specifications is met. The device mainly comprises a gas flow controller, a test material cabin, a base, a charging hopper, a stop valve, a test particle flow sensor, a feeding pipeline and a trapping box. The device has the characteristics of safety, reliability, constant test particle flow and convenience in maintenance and cleaning.

The utility model relates to the technical field of material mechanics impact resistance experiments, in particular to a material mechanics impact resistance experiment device which comprises an experiment box, a base is connected to the lower surface of the inner wall of the experiment box in a sliding mode, and a splash-proof box is fixedly connected to the upper surface of the base. Four sliding blocks a and four clamping plates are driven by four air cylinders a to get close to each other to clamp and fix an iron ball, a servo motor a drives a screw a to rotate, the screw a rotates to drive a threaded sleeve a, a movable frame a and a movable frame b to move upwards, the height of the iron ball is adjusted according to experimental design, an electromagnet is powered off, and the iron ball is fixed. The iron ball falls onto the surface of an experimental material under the action of self weight to carry out an impact resistance experiment, and meanwhile, fragments generated by material crushing are blocked by the splash-proof box, so that the problems that when an existing material is smashed, the material is likely to shake and collide with other parts, the test result is inaccurate, and fragments are likely to fly out when the material is damaged to hurt experimenters are solved.

The utility model relates to the technical field of test equipment, in particular to a cold and hot impact testing machine which comprises a supporting table, a test bin and a sealing door, the upper side of the supporting table is fixedly connected with two first adjusting seats which are symmetrically distributed left and right, and the upper side of each first adjusting seat is fixedly connected with a pair of first hydraulic cylinders; according to the device disclosed by the utility model, through the arrangement of the gas pump, the ventilation pipe, the heating assembly and the hot air conveying pipe, the device can support a test material through the sliding frame and the supporting plate, and the gas pump is matched with the cold air conveying pipe or the hot air conveying pipe to form air circulation; according to the device, the refrigeration assembly or the heating assembly is used for refrigeration or heating, the test bin is used for replacing a refrigeration bin and a heating bin, test materials do not need to be carried through a conveying assembly in the test process, the equipment structure is simplified, meanwhile, the carrying time is saved, and the test efficiency is improved.

The present application belongs to the field of furniture production and manufacturing, and provides a wood material cutting tool wear and machining precision online monitoring method, which comprises: sharpness determination and wear amount calculation and analysis of handle milling cutter and drill bit; preparing test materials and tools, determining numerical control milling machine and measuring instrument equipment; based on the tool edge retreat amount on the tool wedge angle diagonal, as the cutting tool edge wear evaluation value; tool wear test; multi-source signal synchronous acquisition and signal preprocessing and noise reduction; multi-domain feature extraction and fusion; optimization algorithm suitable for tool wear prediction model establishment: constructing LF-SMA-RELM tool state monitoring and prediction hybrid model for predicting tool edge retreat amount; online monitoring and intelligent early warning; the present application realizes full-process monitoring and prediction of cutting tool wear state and machining precision change.

The application discloses an electronic product temperature cycle life test system based on data analysis and relates to the technical field of electronic product testing, solves the technical problem that the prior art cannot extract a harsh scene and integrate it into a temperature cycle scheme for temperature cycle test in combination with the use scene of an electronic product, and specifically relates to a use scene joint analysis unit which performs life test analysis on an electronic product in combination with the use scene of the electronic product, extracts a harsh scene and integrates it into a temperature cycle scheme for temperature cycle test, and tests the electronic product under a simulated use scene; a material failure analysis unit which performs material failure analysis on the electronic product; a material welding failure risk determination unit which determines the material welding failure risk of the electronic product and controls the material connection of the electronic product in a timely manner; and a micro deformation analysis unit which performs micro deformation analysis on the electronic product and ensures the usability of the connection of the overall material.