953results about How to "The test data is accurate" patented technology

The invention discloses a combined vibration damper of a screw drill complete machine test-bed and a manufacturing method thereof. The combined vibration damper comprises a vibration attenuation base which comprises a loading system base, a first clamping system base and a second clamping system base, wherein the loading system base is arranged on an equipment foundation in a rigidity way; the first clamping system base and the second clamping system base are connected into a whole through a bolt and are arranged on the equipment foundation through a rubber vibration attenuation block; an interval of 30-50 mm is reserved between the loading system base and each clamping system base; the first clamping system base and the second clamping system base are respectively internally provided with a plurality of cubic cavities with an equal size; the volume of each cubic cavity is 0.1-0.2 cubic meter; discrete type balance weight sand is respectively filled into the cubic cavities, and the filling efficiency is 80-90 %; and the weight of the balance weight sand is 25-35 % of the total weight of the whole device. The test-bed is capable of restraining resonance and testing precisely in the testing process by the combined vibration damper, and the usage precision of surrounding working devices is not affected.

The invention discloses a static stiffness test system for white vehicle bodies of passenger vehicles. A constrained device (41) comprises a front steadier assembly (4) and a rear steadier assembly (2); a flexural stiffness charger (44) and a torsional stiffness charger (45) are arranged on a service charger (42) to load on the vehicle bodies; a data acquisition and processing system is consisted of a bending deflection test device (46) and a reverse angle test device (47) which are used for vehicle bodies. The invention also discloses a test method used by the test system mentioned above. Using the mentioned technical scheme and compared with the prior test technology and the device thereof used for flexural stiffness and torsional stiffness test for white vehicle bodies of passenger vehicles, the invention has the advantages of better versatility, simple operation, time-saving, less labor intensity and more accurate test date, improving the test production efficiency. As a result, the precision and reliability are higher, besides, economic benefit is improved significantly.

The invention provides a comprehensive testing system for a shield tunnel structural model, which comprises a soil horizon simulating and soil pressure loading device and a tunnel structural model; the soil horizon simulating and soil pressure loading device is a simulated soil body cavity enclosed by steel plates; a horizontal reaction frame is arranged outside the soil body cavity; a horizontal soil pressure jack is connected between each edge of the reaction frame and the soil body cavity; the tunnel structural model is attached with a uniform water pressure loading device and a non-uniform water pressure loading device, and is axially and vertically arranged in the center of the soil body cavity; simulation testing soil is filled between the tunnel structural model and the soil body cavity; the upper part of the soil body cavity is covered by a steel cover board; a vertical reaction portal frame is arranged above the soil body cavity; and a vertical soil pressure jack is connected between the lower part of a girder of the vertical reaction portal frame and the steel cover board. The system can simulate interactions between tunnel structures in different forms of fractures with the stratum under different stratigraphic and hydrologic conditions, and more truly simulate the environment conditions of the tunnel structures with more accurate and reliable test data, thereby providing more reliable safeguard for shield tunnel constructions.

The invention provides a bearing-type damage biomechanic three-point bending test device. The bearing-type damage biomechanic three-point bending test device is characterized by comprising a base (1), a support base (2), support bearings (3), support shafts (4), a pressing head (5), a sensor (6), a connecting plate (7), a travel switch (8), a baffle (9), a baffle fixing screw (10), a support base fixing screw (11) and a dividing rule (12). The bearing-type damage biomechanic three-point bending test device provided by the invention has the advantages that a pair of support shafts and the support bearings can support a biological sample, the rolling friction is formed among the support shafts and the support base, the biological sample free bending constraint caused by the friction in a test process is reduced, the transformation of the biological sample on a supporting position is relieved, more accurate test data can be obtained, and a terminal condition more easily set in a finite element model so as to perform material parameter reverse engineering.

The invention discloses a dynamic physical simulation experiment method for water invasion of a fractured gas reservoir with bottom water and a device thereof; the device comprises a rock core holder including a holder cylinder, a rubber sleeve, an accommodating chamber, and annular confining pressure space; a fractured rock sample is disposed in the accommodating chamber; a high-pressure injection pump is communicated with the confining pressure space of the rock core holder through a first hollow pipe, and a first switch valve is disposed on the first hollow pipe; a gas feeding container and a water feeding container which are arranged in parallel are connected with an inlet end of the rock core holder; a second switch valve is disposed between the gas feeding container and a second hollow pipe; a third switch valve is disposed between the water feeding container and a second hollow pipe; a gas-water separator and a gas flowmeter are arranged in series; the gas-water separator is connected with an outlet end of the rock core holder; a fourth switch valve is disposed on a third hollow pipe. The invention can realize dynamic simulation research for water invasion of fractured gas reservoir with bottom water in a laboratory, and has the advantages of accurate test data, simple device, and easy operation.

The invention discloses a method for simulating faults of a power transformer. According to a current mode and method for simulating the internal faults of the transformer, a returned transformer is commonly utilized to conduct fault simulation tests, or the fault stimulation tests are directly conducted in oil in the transformer, workload is large, fault modules need to be frequently replaced, and the simulation effect is poor. According to the method for simulating the faults of the power transformer, an electric power simulation transformer structure and a transformer fault model are used as the foundation, generation, disappearance and intensifying of transformer partial discharge faults and winding deformation faults are directly controlled outside a transformer body through an external regulation control method, and regulation can be safely conducted in the boosting process. By the adoption of the method for simulating the faults of the power transformer, the trouble of replacing the fault model in the fault simulating process is avoided, generation time and intensity of the faults in the boosting process can be conveniently regulated and controlled, and the method is accurate and efficient.

The invention provides a method and a system thereof for measuring the time of exposure of a door-control type image intensifier, which are suitable for measuring the time of exposure of various ultra-high speed photoelectric cameras adopting the door-control type image intensifier as a shutter. The method adopts picosecond (ps) pulsed laser for illumination, n times n pieces of optical fibers thelength of which is distributed in an equidifferent way form a laser array with n times n points in the way of delay, the laser array is regarded as a shoot target and is imaged on the door-control type image intensifier by an objective lens, the door-control type image intensifier outputs an image, the image is coupled with a CCD camera, the CCD camera records the quantity of the shot laser arraypoints, the space number of the laser points is calculated and then times time interval so as to obtain the time of exposure of the door-control type image intensifier. The invention can be directlyused for marking the time of exposure of ultra-high speed photoelectric framing cameras, and has broad application prospect in the field of researching the door-control type image intensifier as wellas in the measurement of time of exposure of the ultra-high speed photoelectric framing cameras.

The invention discloses an instrument for testing the stratum in-situ thermal property of a ground source heat pump and the heat exchange quantity of a buried pipe, comprising a pipeline circulating system, a testing system and a monitoring system, wherein the pipeline circulating system is a circuit which is formed by connecting a flow sensor, a circulating water pump, an electric heater, an expanding tank, an exhausting valve, a three-way valve and a water supplying valve with a U-shaped buried pipe through connectors; and the testing system comprises a flow sensor, a temperature sensor, a pressure sensor and a power sensor, which are respectively connected with the monitoring system. In the invention, the testing instrument has compact structure and is convenient for carrying; two testing modes of testing the stratum in-situ thermal property and the heat exchange quantity can be economically and conveniently realized at the same time by utilizing one machine; two circulating pumps are alternately used to prolong the service life of the circulating pumps; the test and the adjustment are more convenient; and the testing data is accurate.

The invention provides a method and device for testing axial rigidity and radial rigidity of a rotary hydrostatic guide rail. A rotary guide rail seat is fixed on a platform, a pressing plate and a rotary assembly are fixedly connected to form a rotary part, and the rotary part is used for guiding in a rotary motion way by depending on a hydrostatic guide rail pair; an axial load assembly comprises a flange sleeve, a screw rod, a thrust bearing, a radial bearing, a sleeve, a connecting piece, force sensors and a terminal pad which are vertically arranged; a radial load assembly comprises a flange sleeve, a screw rod, a thrust bearing, a radial bearing, a sleeve, a connecting piece, a force sensor, a loading piece and a connection bending plate which are horizontally arranged; and a mounting support of a displacement sensor assembly is fixed on the rotary guide rail seat, and a measuring head aligns to the rotary assembly. The method and device provided by the invention can be used for acquiring the axial and the radial rigidity data of the hydrostatic guide rail in a rotary motion and can also be used for an confirmatory experiment on a method for analyzing the rigidity of the hydrostatic guide rail in the rotary motion and the influence of oil film tangential adhesive force.

A rotating bending fatigue tester belonging to the material testing technical field comprises a machine base, an electric machine system, a control system, a balancing system and a loading system. The electric machine system, the control system and the balancing system are fixed on the machine base, while the loading system is suspended in the air through the balancing system. The electric machine system is used to drive a fatigue test sample to rotate, the control system is used to connect the components, run the whole device and record the sample data, the loading system is used to hold the sample and provide a load, while the balancing system is used to balance out the weight which holds the sample and is suspended on one end in the air in the loading system. The invention is applicable to carrying out the rotating bending high cycle fatigue test of the magnesium alloy standard sample with a maximal rotating speed of 6000r / Min, thereby greatly saving test time and cost. Furthermore, the rotating bending fatigue tester can grasp samples of various sizes and shapes meeting the state standard with accurate experimental data, simple structure, and easy operation.

The invention discloses a corrosion inhibitor performance evaluation device and method of a circular cooling water system and belongs to the technical field of corrosion inhibitor performance evaluation. In the invention, a circulating water pump is connected with a circular cooling water tank through a pipeline, a heating bar is arranged in the circular cooling water tank, the water inlet of a flow meter is connected with the circulating water pump through a pipeline, the water outlet of the flow meter is connected with the water inlet of a five-opening glass tube through a pipeline, a working electrode, a reference electrode and an auxiliary electrode are respectively arranged on a working electrode opening, a reference electrode opening and an auxiliary electrode opening, the water outlet of the five-opening glass tube is connected with the circular cooling water tank through a pipeline, and the working electrode, the reference electrode and the auxiliary electrode are connected with an electrochemical working station. The device provided by the invention can simulate the flow speed and temperature condition of the circular cooling water under actual working condition, perform AC impedance spectroscopy test on the testing system at the operation state of a testing device, and calculate according to the electrochemical total reaction charge transfer resistance under corrosion inhibitor / non-corrosion inhibitor condition to obtain the corrosion inhibition efficiency of the corrosion inhibitor.

The invention relates to a CT real-time scanning triaxial stress, seepage and chemical coupling rheology test system. The system includes a confining pressure chamber (A), an axial pressure chamber (B) and a test chamber (C), the confining pressure chamber (A) comprises a confining pressure chamber cylinder (1) and a confining pressure chamber pedestal (2), and the confining pressure cylinder (1) and the confining pressure cylinder pedestal (2) are fixed and sealed through a bottom screw (3); and the axial pressure chamber (B) includes an axial piston (4), an axial pressure cylinder and an axial pressure cylinder top cover (6), and the system also includes a seepage part, a triaxial stress closed-loop part and a chemical coupling part. The dimension of the triaxial pressure chamber of the test system is small, so the problem of large dimension of the triaxial pressure chamber is solved; and three closed-loop servo metering pumps are adopted to respectively precisely control the confining pressure, the axial pressure and the osmotic pressure, and can provide the pressure sources for MHC coupling rheology test, so a problem that present hydraulic stations are not suitable for long time work is solved, and test data is reasonable and accurate.

The invention relates to a method for realizing tunnel blasting quality digitalization based on BIM (Building Information Modeling) and multi-dimensional imaging fusion technologies. According to the method, three-dimensional reconstruction is performed for a tunnel face through a three-dimensional imaging technology; based on the BIM technology and technologies such as infrared thermal imaging and nuclear magnetic resonance, digitalized processing is performed on the tunnel face, so that evaluation and control on tunnel blasting quality can be realized. The method has the advantages of advancement, strong comprehensiveness, high prediction accuracy, good evaluation effect and the like. According to the method, a multi-source data acquisition module, a BIM fusion module, a BIM reconstruction and post-processing module and an integrated information management module are adopted; the multi-source data acquisition module import various kinds of acquired geological information into the BIM fusion module; the BIM fusion module carries out point cloud data processing and clusters obtained information into a multi-source heterogeneous fusion database; the obtained information is transferred to the BIM reconstruction and post-processing module; the BIM reconstruction and post-processing module carries out three-dimensional reconstruction and post-processing on point cloud data and image data information and transmits obtained information to the integrated information management module; and the integrated information management module carries out various kinds of management and application of tunnel blasting quality digitalized evaluation and control.

The invention discloses a gear shifter performance testing device. According to the gear shifter performance testing device, the output shaft of a power mechanism rotates to drive a swing arm to swing, and the swing arm drives a swing rod to move; when the wing rod moves, two force sensors drives the handle ball of a gear shifter to swing to simulate gear shifting of the gear shifter, so that the force sensors can in real time measure the force for driving the handle ball to swing; the measuring heads of two displacement sensors abut against the two force sensors and accordingly the two displacement sensors can in real time measure the forward and backward swing distance of the handle ball. The gear shifter performance testing device is relatively accurate in testing data.

The method discloses a load testing system and a testing method for stream media service. The testing system comprises a stream media server, at least one testing client and a testing management server; the stream media server is used for providing a stream media service, at least one testing client is used for launching an on-demand request of the stream media service to the stream media server according to a testing task and recording corresponding on-demand quality parameters when the stream media service is demanded, the testing management server is used for generating the testing task distributed to the testing client and acquiring the on-demand quality parameters of the testing client corresponding to the testing task and the performance log of the stream media server operation and acquiring a testing result of the stream media service through analyzing the on-demand quality parameters and the performance log. Through an SOAP communication protocol, the load testing system for stream media service and the testing method intensively configure the testing task, automatically complete self-testing and generate a testing report to realize the comprehensive testing carried out to the performance of the stream media server and have the advantages of accurate and real testing and wide testing occasions.

The invention relates to a test system of gas vane carried engine hot commissioning. The test system of gas vane carried engine hot commissioning comprises force measurement devices and a mounting bracket, wherein the mounting bracket is connected with a tail skirt end frame of an engine, and the force measurement devices are connected with the mounting bracket; and the number of the force measurement devices is the same as that of gas vanes, and the force measurement devices are used for fixing and driving the gas vanes to quickly and accurately deviate in a tail jet flow of the engine, and measuring the actual deviation angle and corresponding pneumatic load of the gas vanes. The test system provided by the invention can simultaneously drive one or a plurality of gas vanes to quickly and accurately deviate in the jet flow of the engine and measure the pneumatic load and the actual deviation angle of the gas vanes in real time, and has the advantages of accurate simulation, high measurement precision, stronger generality and repeated use.

The invention discloses an endurance test bed for a lock cylinder of a vehicle door. The mechanical part of the endurance test bed comprise a test bed body, a lock cylinder fixed seat, a lock cylinder key fixed block; the lock cylinder is fixed on the lock cylinder fixed seat by a lock cylinder fixture block, a key in-out cylinder is provided, and the lock cylinder key is fixed on a piston rod of the key in-out cylinder, the two sides of the lock cylinder key fixed block are respectively provided with a key rotating connecting block which protrudes outwards, and two key rotating cylinders are provided to push the two key rotating connecting blocks respectively so as to drive the lock cylinder key to make rotary motion in two directions. The technical proposal helps realize the endurance performance test of the lock cylinder of the vehicle door by high-precision pneumatic components in conjunction with programmable control of a PLC controller. The test bed has simple operation, time saving property, low labor intensity, good versatility and high economic benefit; and the test conditions can be set as required, and the obtained test data are accurate and truly reflect the endurance performance of the lock cylinder in service use.

The invention relates to a force measuring apparatus of a jet vane carried engine hot firing test. The force measuring apparatus comprises a measuring assembly, a driving mechanism, a transmission mechanism, a heat proof assembly, an installation pedestal, and a connection assembly. The measuring assembly is used for measuring an air load exerting force on a jet vane and a defection angle of the jet vane as well as comprises a strain gauge balance and an angular transducer and the like. The driving mechanism, which is a driving apparatus for deflection of the jet vane, is fixed on the installation pedestal and is composed of a motor and a reducer. The transmission mechanism mainly includes a gear wheel and a pinion, wherein the pinion is connected with an output shaft of the reducer and the gear wheel is fixed with an inner bearing sleeve of a bearing pedestal. The heat proof assembly is used for protecting the force measuring apparatus to be in an environment with a temperature for normal working during the test process. The connection assembly consists of a coupling band, an angular output shaft and a shaft coupling. And the installation pedestal is used for fixing all parts including the measuring assembly, the driving mechanism, and the heat proof assembly and the like as well as is connected with an external fixed mechanism. According to the force measuring apparatus provided in the invention, a jet vane can be driven to make deflection rapidly and accurately in an engine tail jet flow; and real-time measurement is carried out on an air load exerted on the jet vane and an actual deflection angle; therefore, the force measuring apparatus has good universality and can be used repeatedly.

The invention provides a double-column rotary corrosive-wear testing machine, comprising a testing stand, which is provided with two columns, wherein a crossbeam is arranged on the columns and a through hole is formed in the center of the crossbeam; a crossbeam elevating and driving mechanism, which is arranged on the test stand and connected with the crossbeam; a testing drum, which is arranged on the center of the test stand, wherein an annular temperature control / cooling pipeline is arranged in the lower part of the testing drum; a transmission shaft, which passes through and is arranged in the through hole in the crossbeam; a sample clamping disc, which is fixed at the lower end of the transmission shaft, wherein the upper end surface of the sample clamping disc is provided with an annular groove, and the outer sides of the annular groove are provided with installation through holes; working electrodes, i.e., to-be-tested samples, which are inserted into the installation through holes; an auxiliary electrode, i.e., an annular platinum wire, which is arranged in the annular groove of the sample clamping disc; reference electrodes, which are uniformly distributed on the sample clamping disc at positions corresponding to the working electrodes; and a dynamic connection pool, which comprises annular dovetail cups, wherein the annular dovetail cups sleeve the upper part of the transmission shaft, leading-out circular rings are arranged at the bottom of the inner sides of the annular dovetail cups, the outer sides of the leading-out circular rings are provided with wiring copper columns penetrating the bottoms of the cups, the interior of each annular dovetail cup is provided with an electric needle, the lower ends of the electric needles are certain distance away from the leading-out circular rings, and the working electrodes, the auxiliary electrode and the reference electrodes are connected with the dynamic connection pool through leads.

The invention relates to a method for testing double segments Zinc oxide arrester insulation state, which belongs to the field of power supply establishment test technology. According to the invention, the first grounded ammeter is connected in series with Zinc oxide arrester lower segment, the middle connecting part between the two segments is connected with direct current high voltage test instrument and the second ammeter, pressurizing from the middle connecting part of the two arrester, at first observating the first ammeter, adjusting for obtaining the leak current valve of the arrester; then adjusting the direct current high voltage test instrument, reading current valves of the first ammeter and the second ammeter, obtaining the leak current valve of the upper segment of the arrester from the difference of the two readings. The method of the invention can avoid removing high voltage down-lead, without ascent, reduce the labour intensity and working danger, at the same time avoid the bother of wire change in test, and improve working efficiency. In addition, because the middle segment wire of the double segments Zinc oxide arrester is lower than the top of the upper segment, it is safe and simple to test wire with a certain included angle.

The invention discloses an injection mould with rapidly-replaced mould cores. The injection mould is composed of a movable mould and a stationary mould, wherein a main body of the movable mould is composed of a movable mould base and a movable mould core movably arranged on the movable mould base; a main body of the stationary mould is composed of a stationary mould base and a stationary mould core movably arranged on the stationary mould base; the butt joint faces of the movable mould base and the stationary mould base are respectively provided with a mould core mounting sliding chute which horizontally extends from front to back; at least the front ends of the mould core mounting sliding chutes are provided with plug-in mounting holes for mounting or dismounting the mould cores; the mould cores are provided with tracks matched with the mould core mounting sliding chutes so as to move along the mould core mounting sliding chutes; and the mould cores are inserted to or dismounted from the mould core mounting sliding chutes on the mould bases through the plug-in mounting holes, thus the mould cores are replaced. According to the invention, only one set of mould base needs to be manufactured to be matched with the mould cores of different cavities which are manufactured according to spline standards tested based on different performance indexes; the mould replacing operation is easier and more convenient than that of the prior art, so that the mould replacing time is greatly shortened; and the manufacturing cost of various test spline moulds can also be greatly reduced.

The invention discloses a salt expansion and melt sinking multifunctional testing device for coarse-particle salty soil, which aims at being applicable to an open system and further having the advantages of wide adaptive range, high degree of automation and accurate test data. According to the adopted technical scheme, the salt expansion and melt sinking multifunctional testing device for the coarse-particle salty soil comprises a working platform, wherein the working platform is provided with an organic testing barrel used for placing a soil sample; a heat-insulation layer is arranged outside the organic testing barrel; the bottom of the organic testing barrel is connected with a water replenishing device; the bottom of the organic testing barrel is provided with a water-permeable stone; a plurality of TDR (Time Domain Reflectometry) probes are embedded in the organic testing barrel; the TDR probes are connected to a data collection and control system; the top and the bottom of the organic testing barrel are connected with a freeze thawing circulating device; the working platform is provided with a fixing rack; the fixing rack is provided with a sliding mechanism; the sliding mechanism is provided with a pressure head; the pressure head is located at the upper end of the top of the organic testing barrel; the sliding mechanism is also provided with a compacting device used for compacting the soil sample.

The invention provides a POE switch testing device and a detection method thereof. The POE switch testing device comprises a temperature and humidity adjusting box; a POE switch system disposed in the temperature and humidity adjusting box; a POE system detection tool module connected with the POE switch system, arranged outside the temperature and humidity adjusting box, and used for detecting the power supply function of the POE switch system; an IP network camera connected with the POE switch system and arranged outside the temperature and humidity adjusting box; a temperature acquisition module connected with the POE switch system and used for detecting the temperature rise state of the POE switch system; and a PC arranged outside the temperature and humidity adjusting box, connected with the POE system detection tool module and used for detecting the data packet transmitting and receiving function of the POE switch system. The POE switch testing device solves the defects and the abuses of a conventional detection system using single AC voltage and power frequency by using different AC voltage and power frequency according to users at different regions.

The invention relates to a full-hydraulic continuous-penetration static sounding machine with double oil cylinder groups. Two groups of oil cylinders are adopted and mounted on a frame in a cross shape in a manner of being divided into an upper layer and a lower layer; each group of oil cylinder is fixedly connected together through a cross beam; hydraulic chucks are mounted on the cross beams; stroke limiting switches are mounted below the oil cylinders; a probe rod passes through center inner holes of the two hydraulic chucks; and a hydraulic control system is further provided with valve groups, reversing valves, a hydraulic pump, an electro-hydraulic proportional speed regulating valve KT, a relief valve, a pressure gauge and an oil box. The static sounding machine adopts double oil cylinder group feeding and automatic reversing control; the double hydraulic chucks automatically clamps or loosens the probe rod and automatically achieves continuous uninterrupted feeding through the cooperation of the movement of the oil cylinders; and steady uniform speed feeding is achieved by utilizing the electro-hydraulic proportional speed regulating valve. The static sounding machine has the advantages of simple structure, reliable operation, high efficiency, economy and durability, is convenient for operation, is suitable for the technical field of geotechnical engineering, such as geotechnical engineering, high-speed railway construction, expressway construction and port engineering, and has a wide application prospect.

The invention discloses an apparatus for testing ageing resistance and water tree resistance performances of a medium voltage cable, comprising a medium frequency generator set, a controlling cabinet, a test frequency console, a constant temperature console, a power supply controlling cabinet, a three-phase AC transformer, a voltage-dividing capacitor, a reactor and a constant temperature water bath, wherein the medium frequency generator set is orderly connected with the controlling cabinet and the test frequency console; the commercial power is orderly connected to the test frequency console via the power supply controlling cabinet and the three-phase AC transformer; the test frequency console orderly connects the voltage-dividing capacitor and the reactor to a test cable joint in the constant temperature water bath; a temperature controlling apparatus in the constant temperature water bath is connected with the constant temperature console; and the constant temperature console is connected with a computer data collecting system. The apparatus provided by the invention successfully solves the ageing test problem of the medium voltage cable; the test data is accurate; the simple structure is simple and the cost is low; the invention provides an available and reliable test apparatus for testing ageing resistance and water tree resistance performances of the medium voltage cable.

The invention discloses a generation method of a vibration environment long life test spectrum of a converter of electric multiple units. The generation method comprises following steps of: obtaining a vibration environment standard spectrum according to vibration data of a converter installed on electric multiple units; calculating a root mean square value g1 of the vibration environment standard spectrum according to the vibration environment standard spectrum; calculating an accelerated speed proportion coefficient beta according to the total life running distance L of the electric multiple units, the average running speed V of the electric multiple units, the test time T and an index m through a formula: beta = (L / V*T) 1 / m; calculating a root mean square value g2 of the vibration environment long life test spectrum according to the accelerated speed proportion coefficient beta and the root mean square value g1 of the vibration environment standard spectrum through a formula: g2 = beta*g1; and calculating the vibration environment long life test spectrum according to the root mean square value g2 of the vibration environment long life test spectrum. In this way, the accurate vibration environment long life test spectrum a can be obtained and improvement of detection reliability is facilitated.

The invention discloses a drum device of an indoor type testing machine. The drum device is characterized by comprising a smooth steel base drum, a plurality of modularized road simulation units and a plurality of dynamic balance compensation units, wherein a spindle mounting hole is arranged in the centre of the smooth steel base drum axially; the modularized road simulation units are respectively detachably arranged on outer surface of the circumferential surface of the smooth steel base drum, and the modularized road simulation units are arranged in an end-to-end connecting manner; and the dynamic balance compensation units are respectively detachably arranged on the inner surface of the circumferential surface of the smooth steel base drum, and the dynamic balance compensation units are in dynamic balance compensation matching with the modularized road simulating units. Therefore, the drum device integrates road spectrum and road simulation in a proving ground of the modularized road simulation units and dynamic balance compensation of the dynamic balance compensation units, thereby simulating a tyre test in the proving ground.

The invention relates to a method for quantitatively detecting the content of each component in a mixture of polyester fiber and polypropylene fiber. The detection method comprises the following steps of: (1) putting a test sample with known dry weight which is pretreated by using a standard method into concentrated sulfuric acid in the mass volume ratio of 1g:(100-110ml), and stirring; (2) dissolving the polyester fiber in the mixture, performing sulfuric acid solution treatment, distilled water washing, diluted ammonia water neutralization and distilled water washing and treatment on the residual polypropylene fiber, filtering polypropylene into a glass sand core crucible, drying, weighing, and combining with a modified coefficient to obtain the percentage content of the polypropylene fiber; and (3) subtracting to obtain the content of the polyester fiber. The method has the advantages of accurate test data, nontoxicity of a used reagent to human bodies, no pollution on environment, safety and reliability.

A test device of high temperature wear-out consists of resistance furnace and grinding box set in resistance furnace. It is featured as setting test piece and grinding sand in said box, lay load block above test piece, acting ball form test piece driven by rotary-agitation shifting fork with grinding sand in grinding box, evaluating anticorrosion ability of coat layer on test price by calculating weight loss at surface unit area of test piece.

The invention belongs to the technical field of pavement of marine riser facilities, and particularly relates to a test method and a device. By the aid of the test method and the device, internal flow and top tension can be effectively applied during analog study of a marine riser vortex induced vibration law, and influences of the internal flow to the dynamic property of marine risers are tested. When in marine riser vortex induced vibration test study by the aid of the test device applying the internal flow and the top tension and the test method realized by the device, the top tension with the known intensity is continuously applied, and the intensity of the internal flow and the intensity of external flow are respectively changed, so that the influences of the internal flow to the dynamic property of the marine risers are determined by a strain gauge and a fiber bragg grating testing method. During the analog study of the marine riser vortex induced vibration law, the influences of the internal flow to the dynamic property of the marine risers can be tested, so that accuracy of a marine riser vortex induced vibration model test is improved, and an accurate test conclusion can be obtained.