677results about How to "Short test cycle" patented technology

The invention provides a multifunctional vacuum friction and wear testing machine, which not only can simulate special environmental atmospheres such as vacuum, radiation and corrosion, but also can conduct tribology tests in a relatively wide speed and load range by using various contact manners (ball-disc and pin-disc). The multifunctional vacuum friction and wear testing machine mainly comprises a vacuum system, a friction and wear system, a power transmission system, a control system, and the like, wherein the friction and wear system comprises a lever structure (22) used for fixing a test sample fixture (20) and capable of freely rotating in a horizontal direction and a vertical direction; the lever structure (22) comprises a cantilever beam (18) and a vertical arm (23) which are arranged in a perpendicular manner; the cantilever beam (18) is connected with the vertical arm (23) through a two degree of freedom bearing structure (17); positions of the cantilever beam (18) and the vertical arm (23) can be adjusted in the horizontal direction and the vertical direction through the control of a manipulator (15) and a hand wheel structure (13), so that the test sample fixture (20) can accurately move within two degrees of freedom; and a temperature sensor (2) and a pressure sensor (3) are mounted on the test sample fixture (20), so as to detect / monitor friction coefficients and temperature variations during the tribology tests.

The invention discloses construction and application of a CRISPR / Cas9 gene editing vector for microorganisms. The constructed CRISPR / Cas9 gene vector consists of a replication start site, a selection marker gene, a Cas9 protein gene, gRNA coding DNA, a homologous recombinant element and an operon. The CRISPR / Cas9 gene vector constructed by the invention is capable of editing (including performing such operations as knocking out, replacing, interpolating and the like on gene or DNA sequence) escherichia coli or corynebacterium glutamicum genome; and the gene vector has the advantages of being short in test cycle, time-saving and cost-saving, high in efficiency and the like.

The invention provides a method and a device for evaluating the life of a product. The method comprises the following steps of: determining key devices of a complete machine equipment product; performing an accelerated life test on each key device, and obtaining the corresponding life characteristic according to accelerated life test data; and evaluating the life of the complete machine equipment product according to the life characteristic of each key device. By the method and the device, time for evaluating the life of the product can be shortened, and the cost of evaluating the life of the product can be reduced.

The invention discloses a physical simulation testing device used in graff contaminant transmission under the action of temperature-hydraulic coupling. The testing device comprises a simulation container, an air pressure control device, a temperature control device, a circulating water system and an online control and monitoring system. The testing system can realize physical simulation test of transmission dynamic characteristics of contaminants in rivers, aqueducts, sewage trenches and surrounding soil and ground water, and integrate monitoring, control and data acquisition; moreover, the testing system realizes real-time display and intelligent control of water level, temperature and pressure variations in the testing system, and carries out overall process acquisition, analysis and visualized input and output on testing data through a data acquisition program. The testing system has the characteristics of reasonable structure, convenient operation, high precision of testing data, quick automatic data acquisition, short testing cycle as well as ideal modularization, openness and expansibility, and the like. In addition, the testing system provides parameter basis to disclose the transmission mechanism of contaminants in soil and ground water under complicated environmental conditions and analyze migration and transformation rule, and also provides technical support for appraising pollution control and treatment technical proposals.

The invention discloses a method for evaluating long life of a component. The method comprises the following steps of: analyzing characteristics, an application platform and an application environment of the component; initially determining a stress level and sensitive parameters of a test; determining an application sequence of stress factors, responding to an analytical method for the sensitive parameters, and determining test equipment; performing an official test, namely recording sensitive parameter values of a component accelerated life test at certain time intervals to display changes of the sensitive parameters of the component accelerated life test along with time; performing graphical analysis by using graphic software, and selecting the best accelerator model and lifetime forecasting model; and verifying whether the models are valid, if so, evaluating the long life of the component, otherwise, redetermining the parameters. The method has the advantages of short test period, low testing expenses, general applicability, scientificity, no need of a preset model, suitability for small increments and capability of evaluating the long life of components adopting new technology and having long life.

The invention provides a continuous measuring device for volatile organics in soil. The measuring device comprises a hollow shell and is characterized in that a drilling bit is arranged at the lower end of the shell; a thread connector is arranged at the upper end of the shell; a carrier gas leading-in pipe and a carrier gas leading-out pipe are arranged in the shell; the carrier gas leading-in pipe is communicated with the bottom of the carrier gas leading-out pipe; an opening is formed in the side wall, near the carrier gas leading-out pipe, of one side of the shell; a waterproof permeable thin film is arranged at the opening; an opening is formed in the carrier leading-out pipe and is communicated to the permeable thin film; a heating part is arranged at the side wall of the shell below the waterproof permeable thin film. The device is convenient to operate, short in testing period, low in logistics requirement and high in measuring accuracy and quite suitable for pollutant investigation of cities and suburban oil which need a large amount of outer field measuring and analyzing.

The invention discloses a measuring apparatus for capability of explosive explosion in driving of metal. The measuring apparatus is mainly composed of an explosion chamber, a metal flyer plate, velocity measurement targets, velocity measurement target supports, etc. The measuring apparatus is designed on the basis of velocity measuring principles; the explosion chamber composed of a charging sleeve and an explosion protection body is filled with a to-be-measured explosive column, the metal flyer plate is adhered on the end surface of the explosive column aligned with the charging sleeve and the explosion protection body, the explosive is fired from the other end surface of the explosive column so as to accelerate motion of the metal flyer plate, a time interval recorder is employed to acquire time when the metal flyer plate generates pulse current when passing through the velocity measurement targets at different distances, the relation curve of the distance and time of motion of the metal flyer plate is acquired through data processing, and first derivation is carried out on the curve so as to obtain the speed of the metal flyer plate at different times or distances so as to measure capacity of explosive explosion in accelerating metal.

A method for detecting an ingredient in a food product includes establishing a spectral signature in a Raman spectrum obtained from a chemical substance; allowing a food sample solution obtained from a food product to come to contact with a first nano-scale surface structure in a first sensor, wherein the first sensor comprises a substrate, wherein the nano-scale surface structure comprises a plurality of columns over the substrate or a plurality of holes in the substrate; illuminating the food sample solution and the first nano-scale surface structure on the first sensor by a laser beam; scattering the laser beam by the food sample solution and the first nano-scale surface structure to produce a scattered light; obtaining a first Raman spectrum from the scattered light using a spectral analyzer; and identifying the spectral signature in the first Raman spectrum to determine the existence of the chemical substance in the food product.

The invention discloses a measuring method for a coal seam gas permeability coefficient, which comprises the following steps: constructing two drill holes, with the same depth, perpendicular to a coal seam at a certain interval, and recording the distance d between the two drill holes; obtaining coal seam absolute gas pressure p; injecting tracer gas into one drill hole, wherein an air compressor is connected with the drill hole so as to provide certain pressure for the drill hole, and connecting the other drill hole with a gas extraction system pipeline in a sealing manner; detecting the tracer gas, and determining the time t from the time when the drill hole is connected to the gas extraction system pipeline to the time when the tracer gas is detected; substituting the measuring result into a computational formula of the coal seam gas permeability coefficient to obtain the coal seam gas permeability coefficient. The computational process is simple; through the certain gas injection pressure provided by the compressor, and the connection between the other drill hole and the gas extraction system pipeline, orifices are kept under negative pressure. Therefore, the tracer gas can be measured quickly, the measuring period is short, and the general applicability is strong.

The invention relates to a red double-perovskite fluorescent powder for white-light LEDs and a preparation method of the red double-perovskite fluorescent powder. The red double-perovskite fluorescent powder is characterized by comprising double-perovskite components shown in the following formula: (AA'1-xMex)MgMO<6>, wherein the A is one of Na or K, the A' is one of La or Gd or composition of the La and the Gd, the M is one of W or Mo or composition of the W and the Mo, the Me is one of rare-earth element Eu or Pr, and the x is larger than or equal to 0.005 and is smaller than or equal to 0.5. The fluorescent powder is prepared by means of sol-gel, single-phase double-perovskite oxide powder can be obtained at the lower temperature and in shorter time, mixing of ions or atoms can be realized by active ions of rare earth, test period is short and stability is fine.

A method for non-invasive detection of a disease, a status of illicit-drug use, or smoking status includes transferring a body fluid obtained from a patient to a sensor comprising a nano-scale surface structure to allow the body fluid to come in contact with the nano-scale surface structure, illuminating the body fluid and the nano-scale surface structure by a laser beam, scattering the laser beam by the body fluid and the nano-scale surface structure to produce a scattered light, and analyzing the scattered light using a spectral analyzer to diagnose a disease, the status of illicit-drug use, or smoking status in the patient.

The invention relates to a method for testing the control of accelerating corrosion of steel reinforcement in chlorine salt corrosion concrete. The method adopts a multi-channel DC regulated power supply, a standard testpiece for controlling the accelerating corrosion of the steel reinforcement in concrete, a chlorine salt solution test box, chlorine salt solution, a test live wire and an electrochemical reaction cathode steel reinforcement plate for testing; and in the testing, the control of corrosion degrees of a plurality of steel reinforcements in the same environmental condition is realized by controlling the current density, voltage and time on the surfaces of the steel reinforcements, and test parameters and test results corresponding to different corrosion degrees of the steel reinforcements are obtained. Compared with the prior art, test equipment required by the method has convenient installation, strong controllability, and completes a single test in a short period; the testpiece is easy to manufacture, and has small occupied space and low cost; and the method has better operability and promoting applicability in controlling the corrosion speed and corrosion quantity of the steel reinforcements in a concrete structure in a total life cycle.

The invention discloses a piston heat load test device with a laser as a heat source, and a piston heat load test method. The device comprises a bracket, a control device, a heating device, a temperature sensing device, a monitoring device and a cooling device, wherein the heating device consists of a laser device and a beam shaper which changes a laser beam emitted by the laser device into a laser beam with a plurality of concentric ring-shaped spots and projects the laser beam onto a piston surface vertically. The method comprises the following steps of: firstly, optimizing a laser energy distribution ratio of areas on the piston surface according to the temperature field distribution of a piston under an actual working condition; secondly, designing an optical conversion plate according to the energy distribution ratio; thirdly, converting an incident beam into a concentric ring beam which meets the requirement on the laser energy distribution ratio of the areas; and fourthly, simulating the temperature field distribution law of the piston under the actual working condition by loading the beam on the piston. The device and the method can simulate the temperature field distribution on the piston surface under the actual working condition and have the advantages of short experiment period, high reliability and high controllability.

An accelerated loading test device for a small full-size asphalt pavement relates to an accelerated loading test device for a full-size asphalt pavement, aiming at the problems of impossibility of accurately simulating the actual stress state of an asphalt pavement in an indoor wheel tracking test, as well as large equipment size, long test period, high test expense and complex operation process in an outdoor full-size pavement accelerated loading test. A two-way motor drives a drive big gear and a driven big gear to rotate; a transmission cross rod disposed on a rack is fixedly sleeved with a force-transferring pinion, as well as sleeved with a force-transferring big gear, a lifting gear and a transition chain wheel engaged with an annular horizontal transmission chain in a suspension manner; the force-transferring big gear and the force-transferring pinion are engaged with an annular vertical inner transmission chain and an annular vertical outer transmission chain; the lifting gear is engaged with a lifting guide rail; the movements of a rolling steel wheel and a loading wheel group are driven via the annular horizontal transmission chain; the up-and-down movement of a rectangular-frame steel wheel loading beam is driven via an inner oil pressure pump; and the up-and-down movement of a rectangular-frame wheel group loading beam is driven via an outer oil pressure pump. The invention is used for the accelerated loading test for the full-size asphalt pavement.

The invention relates to a general external field wireless test system, including a track, a test carriage for carrying a test terminal and running on the track, an antenna for providing at least one wireless network environment of wireless system and forming at least one track coverage cell on the track, and a control center for controlling the running mode of the test carriage and the work mode of the antenna. The invention can realize various external field wireless environmental simulations, high speed wireless test environmental simulation, various switch tests, test environmental simulation in which various wireless systems coexist, wireless advanced research, wireless arithmetic research, wireless equipment test, terminal test environmental simulation, network performance test of free bearing mobile terminal in order to analyze special wireless network performance, locate special wireless network exception and provide convenient wireless test environment for new technology experiment and frontier study of wireless network.

The invention belongs to the field of novel energies and relates to a blade experiment device for a tidal current energy water turbine. The blade experiment device comprises a table frame, a stator blade shaft, a stator blade, a deflection bracket upper arm, a deflection bracket lower arm, a deflection bracket shaft, a rotary blade shaft and a rotary blade. The blade experiment device is mounted on an opened type water groove. During experiments, a working condition of blades of the tidal current energy water turbine can be more actually simulated by rotating the stator blade shaft, the rotary blade shaft and the deflection bracket shaft, and adjusting the different positions of the stator blade and the rotary blade, so that a blade variable attack angle property test, blade property tests under different mounting angles, the blade property test after the water turbine rotates for a circle, and a property test of manual interference effect between the blades of the water turbine can be completed. The problems that the blades of the tidal current energy water turbine have the defects of difficulty in hydraulic property tests, long test period, and larger difference between a test working condition and an actual working condition can be solved.

The invention provides a flexural fatigue testing machine, which comprises a hydraulic motor and a deceleration machine used as driving devices, a main shaft, a plurality of eccentric wheels, a main shaft supporting seat and a specimen holder, wherein the main shaft is arranged on the main shaft supporting seat in a rotatable mode, the eccentric wheels on the main shaft are driven to rotate by the hydraulic motor, a specimen is fixed on the specimen holder, the height of the specimen holder and the horizontal distance between the specimen holder and the main shaft are adjustable, and periodic load is applied to the specimen by the eccentric wheels so as to enable the specimen to be bended and deformed repeatedly until the specimen is fractured. According to the flexural fatigue testing machine disclosed by the invention, a flexural fatigue test can be carried out on a plurality of specimens simultaneously every time, fatigue performances of the specimens can be contrasted, the test period is short, and the work efficiency is high; and the flexural fatigue testing machine has a simple structure and is low in cost, the flexural fatigue test can be carried out on specimens with different specifications, different loading positions and loading working conditions can be selected, and the scope of application of the machine is wide.

The invention discloses a laboratory simulation test system and a method applicable to sand layer permeation grouting. The system comprises a power device, a bearing grout storage bucket, a grouting pipeline and a grouting test device, wherein the power device applies pressure on the bearing grout storage bucket, so that grout in the bearing grout storage bucket is conveyed to the grouting test device by the grouting pipeline. The grouting test device comprises an experimental bench, the experimental bench is provided with a containing space for bearing a grouted medium, a grouting port is formed at the upper end of the containing space, and a grout discharge port is formed at the lower end of the containing space, so that a permeation process of pressed grout in the grouted medium is tested. The system adopts fabricated device design, so that a simulation test of sand layer permeation grouting performance can be performed by lower cost, less time and lower manpower input, and a relatively ideal effect can be obtained.

The invention discloses a method for compensating for the deflection of a concrete pump truck arm support, belonging to the technical field of concrete pump truck arm supports. In the method, a terminal is used for compensating in real time; an arm support deformation data sheet which corresponds to a series of pouring locus coordinates is established by testing; and when operating personnel controls a pouring gate to move to the start pouring point of a specified pouring locus, a control system is used for calling a corresponding locus planning program, arm support deformation data and a joint variable inverse solution program by computing an angle value fed back by each joint arm inclination angle sensor and resolving the joint variable of each compensated pouring point to control the application of pouring gate movement. The method for compensating for the deflection of the arm support has the beneficial effects of easiness for controlling, high accuracy, easiness for implementing and capability of effectively compensating for the deflation of the arm support in the intelligent control process.

The invention discloses a system and a method of analyzing energy consumption of an electric vehicle. The system comprises an electric quantity measuring module, a shaft power measurement module, a power acquisition module and a calculation module, wherein the electric quantity measuring module is used for measuring total output electric quantity of a power battery when a test vehicle drives at a preset vehicle speed at a preset ambient temperature; the shaft power measurement module is used for measuring total power absorbed by a driving shaft of a transmission system assembly when the test vehicle drives at the preset vehicle speed at the preset ambient temperature; the power acquisition module is used for acquiring total power absorbed by a chassis dynamometer when the test vehicle drives at the preset vehicle speed at the preset ambient temperature; and the calculation module is respectively connected with the electric quantity measuring module, the shaft power measurement module and the power acquisition module for respectively calculating the transmission system assembly efficiency and the wheel efficiency according to the total output electric quantity of the power battery, the total power absorbed by the driving shaft of the transmission system assembly and the total power absorbed by the chassis dynamometer. Thus, the overall energy consumption and the efficiency of the electric vehicle at the preset ambient temperature and the preset vehicle speed can be effectively analyzed.

The invention discloses a method for fast evaluating high temperature member residual service life on spot. The method comprises a first step of obtaining test pieces with different aging damages through heat treatment, a second step of measuring hardness of materials under different aging damages, a third step of adopting a least square method for fitting a functional expression of parameters such as hardness-residual service life, a fourth step of using practical structure materials to do tensile creep and hardness tests to obtain a correction factor and a calibration curve of hardness-residual service life of a practical running structure, and a fifth step of fast evaluating structural residual service life according to the calibration curve and surface hardness measured on the spot. According to the method for fast evaluating high temperature member residual service life on the spot, health consultation of a device can be provided concisely and fast on the spot, and requirements of operating maintenance of production equipment are met. Interruption of production is not needed, the equipment can not be damaged, a test cycle is short, cost is low, and the method for fast evaluating high temperature member residual service life on the spot is very sensitive and can meet the requirements.

The invention relates to a method for predicting the aging failure rule and the service life of a polymer material under multiple environmental factors, belonging to the field of high polymer materials. According to the method, a lifetime characteristic index-aging time curve of the polymer material under an acceleration condition is obtained based on an accelerated aging test under the multiple environmental factors, corresponding aging failure acceleration factors are calculated by virtue of an Arrhenius formula, a reciprocity method and a superposition rule, an aging failure curve in a normal service environment (with multiple aging factors) is extrapolated from the failure curve under the acceleration condition by virtue of the aging failure acceleration factors, and the aging failure rule of the polymer material is predicted. The method has the beneficial effects of short test cycle, good repeatability, simplicity in theoretical derivation and high prediction reliability.

The invention discloses a rock and earth mass frost heaving parameter in-situ tester. The tester comprises a test probe, a control device and a data collection device. The test probe comprises a hollow shaft, an elastic air bag, a thermal insulation layer, a heat exchange sheet and a protection sleeve which are distributed in order from inside to outside. The upper end and the lower end of the elastic air bag are fixed on the hollow shaft through flanges. A frost heaving force monitoring device and a frost heaving displacement monitoring device are arranged between the hollow shaft and the air bag. The control device comprises a temperature control device and a pressure control device. The temperature control device is connected with the heat exchange sheet through a thermal insulation pipe. The pressure control device is connected with the elastic air bag through a pressure pipe. The data collection device is connected with a sensor arranged on the test probe. The tester has advantages of accurate result, low cost, easy operation and the like.

The invention relates to a fatigue test device of an automobile sliding column assembly and an experiment method thereof. Two ends of the sliding column assembly (2) are respectively connected onto an upper clamp (3) and a lower clamp (1). A hydraulic actuator (5) is connected with the sliding column assembly (2) through a guide device (4). When the hydraulic actuator (5) moves vertically, a spiral spring (21) and a damper of the sliding column assembly (2) can simulate the spiral spring in the automobile driving process to move vertically. A strain sensor is bonded to the outside of the spiral spring (2) of the automobile sliding column assembly to collect strain value of the spring, and a data collector collects displacement value and force value of the hydraulic actuator (5). The computer modifies value collected by the strain sensor and the data collector according to automobile sliding assembly road load spectrum collected by a road test and reproduces road test condition and environment on the fatigue test device after edition processing of the principle of sliding column assembly damage equivalence.

The target simulating method for photoelectrical theodolite features the simultaneous simulation of the target locus, target characteristic and the background, the simulation results are fed to the target image synthesizing module, and the target image synthesizing module superposes the target image onto the background image based on the results from the target position calculating module, target characteristic calculating module and the background image selecting module to create the complete image. The final image is fed to the TV image processing system, the computer data processing system and tracking control system in the photoelectrical theodolite for the theodolite to track the simulated target. The present invention provides real-time target simulating image, and is suitable for simulation of various kinds of targets with different kinematics characteristics and imaging characteristics.

The invention relates to a direct sound production test device of a large-proportion propeller model, and belongs to the technical field of underwater vehicle propeller noise control. The device comprises two-way tensioning drag equipment, a water-surface unpowered ship, data acquisition equipment, a power cable, control and data processing equipment, a hydrophone array, the propeller model, a main shaft system, a non-watertight shell, a watertight shell, a sensor, a supporting part, a rigid connecting part and a motor. Water-surface unpowered chip parameters, main shaft system parameters, motor parameters and two-way tensioning drag equipment parameters are determined according to the needed maximum thrust, dimension, weight, power and rotating speed of the propeller model; when the propeller model is not installed, the noise of a system is tested; a clutch is disconnected, and the no-load noise of the motor is tested; the test device is rectified according to the test result till test demands are met. The test device is good in test result repeatability, short in test period and low in cost.

The invention discloses a novel method for measuring compact tension specimen fracture parameters by using double extensometers. The novel method comprises the following steps of: measuring two opening displacements by using the double extensometers; obtaining a crack tip opening displacement (CTOD) of a compact tension test through calculation by using a triangular relation; and calculating a CTOD value under each load and a nominal stress corresponding to the CTOD value, and obtaining a relation between the nominal stress and the CTOD, thereby obtaining a CTOD design curve of the compact tension test. The fracture parameter test method disclosed by the invention has the characteristics of simpleness, easy operation, simpleness for processing data, high precision of a critical CTOD value, comprehensive data, large information quantity, freeness from test precision influences of other parameters, such as strength, Young modulus, rotary factor and load, capabilities of obtaining the CTOD data of the whole test loading process and obtaining the CTOD design curve of the compact tension test under an actual board thickness condition.

The invention discloses a test method and a test device for simulating natural inhomogeneous rusting of a reinforcing steel bar in concrete. The method comprises the following steps: pre-burying stainless steel wires in concrete, and supplying constant-current power for electrolytic reaction to a concrete test piece. The test device comprises a mold unit, a stressing unit, a test piece to be tested and a power supply unit, wherein the mold unit comprises a mold for casting the test piece to be tested, a through hole bolt and a fastening bolt; the stressing unit comprises a bracket, a lower fulcrum, an upper fulcrum, a loading screw rod and a popping bolt; the test piece to be tested comprises a concrete base body, a reinforcing steel bar and a stainless steel wire electrode; the power supply unit adopts a voltage-stabilizing current-stabilizing direct-current power supply. The test method and the test device have the benefits that the test period is short, natural inhomogeneous rusting of the reinforcing steel bar can be effectively simulated, the position, the rusting range and the rusting degree of inhomogeneous rusting in the circumference direction, and inhomogeneous rusting in the length direction of the reinforcing steel bar can be effectively controlled, energy loss caused by concrete resistance can be reduced, and the prediction result precision is high.

The invention relates to a method for rapidly determining key parameters of release of volatile organic compounds in wooden furniture, and belongs to the field of indoor environment examination. The method comprises the following steps: establishing a physical model; placing wooden furniture to be tested in an environment cabin capable of strictly controlling the humiture, for free release; measuring the hourly concentration of target pollutants in the environment cabin multiple times in the release process of the wooden furniture; and calculating the releasable concentration, the diffusion coefficient and other key parameters in the release process of the wooden furniture according to the physical model. The determination method has the advantages of convenience in operation, short test period, high precision, and suitableness for laboratory detection and engineering application.

The invention provides a method for predicting high-temperature and long-term creep property of heat resistant steel, and is particularly suitable for prediction of the high-temperature and long-term creep property of 9-12% of Cr ferrite heat resistant steel. Strain hardening and strain softening behaviors of the materials in a high-temperature stretching process are obtained by a constant slow-speed and high-temperature tensile testing method at the strain rate which is smaller than or equal to 10-5S-1, so as to represent dislocation creep and predict the creep deformation behavior which is the same as the deformation mechanism. Thus, the long-term creep property of the material is estimated in advance. Compared with a creep test, the method is simple to operate, short in test period and high in efficiency, and can be used for primarily screening alloy ingredients when a new steel variety of the 9-12% of Cr ferrite heat resistant steel is designed. Compared with the traditional creep test assessment method, the design cycle of alloy is greatly shortened; and the development cost of the alloy is saved.