425 results about "Property testing" patented technology

The invention discloses a frequency-change radar goal emulator of millimeter wave, which comprises the following parts: control unit, transceiver unit, Doppler analog unit, distant analog unit and amplitude analog unit, wherein the radar signal enters into the Doppler analog unit through transceiver unit, which produces middle-frequency signal through lower frequency-changer and low-pass filter of the Doppler analog unit; the upper frequency-changer and band-pass filter group of Doppler analog unit produces RF signal; the difference of local oscillator frequency of upper and lower frequency-changers analogs the Doppler frequency shift of goal; the RF signal generates launching signal through changing the echo amplitude of goal simulated by amplitude analog unit, which is transmitted by transceiver unit; the control unit transmits control signal for other four units according to the analog parameter such as input distance, speed and amplitude; the radar signal passes the emulator to provide an analog signal with Doppler frequency shift, signal amplitude fluctuation and distant delay to radar, which provides estimating platform for working property testing for radar.

The invention relates to an in-situ testing machine for the microcosmic performance for a multi-load and multi-physical-field coupling material, belonging to the technical field of material mechanics property testing. The in-situ testing machine comprises a micro/nanometer-precision driving/transmission module, a 'mechanical-electric-thermal-magnetic' loading module and a control module, is integrated with a high-field-depth 3D (three dimensional) micro-imaging lens, a Raman spectrometer and a visual in-situ monitoring module and is capable of dynamically monitoring deformational behaviors, damage mechanisms and performance evolvement rules of the material in a loading process. The in-situ testing machine has the advantages that the whole structure is compact, and the space layout is saved; the loads of four manners including 'stretching/compression-torsion-bending-indentation' can be singly loaded, two or more loads can be combined to be loaded as well, and externally-applied physical fields such as heat, electricity, magnetism and the like can be combined to maximally simulate the real working conditions of components of the material, and effective measures and methods are provided for testing the micromechanical performance of the material under a service-approximating condition.

In connection with a classification system for classifying media entities that merges perceptual classification techniques and digital signal processing classification techniques for improved classification of media entities, a system and methods are provided for automatically classifying and characterizing tempo properties of media entities. Such a system and methods may be useful for the indexing of a database or other storage collection of media entities, such as media entities that are audio files, or have portions that are audio files. The methods also help to determine media entities that have similar, or dissimilar as a request may indicate, tempo(s) by utilizing classification chain techniques that test distances between media entities in terms of their properties. For example, a neighborhood of songs may be determined within which each song has similar tempo characteristics.

A loaded wheel tester for testing asphalt mixtures comprises a loaded wheel tester having additional means for attachment to specimens under test to provide a measurement of tensile strain and for attachment between a frame of the loaded wheel tester and the loaded wheel to determine position of the loaded wheel over time. Output results demonstrate that viscoelastic and fatigue properties of asphalt mixtures are obtained in equivalent or improved format using a modified loaded wheel tester when compared with known pavement test apparatus and methods.

The invention discloses a pipe fitting sealing property testing device and aims at achieving the effects that the pipe fitting sealing property testing device is convenient to operate, high in testing result accuracy and capable of guaranteeing that the two pipe ends of a pipe fitting are not prone to being damaged due to clamping. The device comprises an air feed pump, a baroceptor, a main rack, two push plate air cylinders, two side racks, a main end cover and a subsidiary end cover, the two push plate air cylinders are arranged on the two side racks respectively, a piston rod of one of the push plate air cylinders is connected with the main end cover, a piston rod of the other push plate air cylinder is connected with the subsidiary end cover, a main elastic sealing ring pad is arranged on the main end cover, a subsidiary elastic sealing ring plate is arranged on the subsidiary end cover, and a main cover air hole is formed in the main end cover. The pipe fitting sealing property testing device has the advantages that the pipe fitting can be positioned to the right position, the sealing property can be guaranteed, and the pipe fitting is not damaged due to clamping; the device is provided with a sealing structure which can be adjusted in a self-adaptation mode, and the sealing effect in the high pressure testing process can be intensified; the device is provided with an assistant positioning structure, the end covers can be prevented from moving backward, the push plate air cylinders can be protected, the sealing effect can be improved, and stability in the testing process can be maintained.

Aiming at disadvantages of current on site testing instrument for industrial control network, the invention designs portable instrument of analyzing and on site testing industrial Ethernet protocol (IEP). The designed instrument possesses features: monitoring state of EPA network in real time; carrying out performance analysis based on message of equipment declaration on network; detecting whether network connection and equipment are connected to network correctly; determining route of target equipment (TE), querying information of TE, detecting port state of TE; testing whether the tested object realizes service declared by the object according to EPA standard; testing time Synch precision between tested equipment and main clock; based on EPA standard to carry out deterministic scheduling analysis for message captured from network; carrying out attribute test for objects in management information database etc. The invention can widely be applicable to analyze and on site testing IEP.

The invention discloses a decision tree based game cheat detection method invented for solving the problem of the prior art that the passive defensive mode cannot detect external hanging. The method of the invention comprises the following procedures: the non-redundant characteristic attribute data set is extracted from the information database of a player at predetermined time; data in the characteristic attribute data set are divided into characteristic attribute exercise data and characteristic attribute test data; a decision tree is generated with the characteristic attribute exercise data and clipping on the decision tree through the characteristic attribute test data is performed to generate an objective decision tree model; the objective decision tree is assessed to obtain an appropriate objective decision tree model; analytical treatment is performed on the objective decision tree to produce categorized player databases and then on-line analysis of the categorized player databases is conducted to detect cheating players with external hanging. The invention can conduct data mining analysis with the data mining method in an active defensive mode to detect cheating players, thereby improving the external hanging preventing ability in online network games.

The invention provides a method and a device for predicting permeability on the basis of pore structures of carbonate rock. According to the method, firstly, the pore structures are classified on thebasis of similarity level of mercury injection curves, then each type of pore structure reservoir is analyzed with a mathematical statistics method, key pore throat size Rs for controlling permeability is identified, and the relation between the key pore throat size Rs and the permeability of each type of pore structure is established, so that the permeability of a highly anisotropic reservoir canbe predicted. According to the provided scheme, microscale and macroscale combination is realized by comprehensively using a core, property testing, mercury injection and well logging, the theoretical basis is firm, the operability is high, and practice proves that the method and the device have good application effect and high applicability to porous-type carbonate rock reservoirs, can effectively predict the permeability of the carbonate rock and have great significance in identification of barriers and interlayers of highly anisotropic carbonate rock as well as design and regulation of oiland gas field development programs.

The method comprises: the circle center of testing machine base, the central shaft of the asphalt concrete test piece, the circle center of the test machine loading platen, and the loading pressure head of the testing machine are located at same perpendicular line; the section diameter of the loading platen of the testing machine is less than the section diameter of the asphalt concrete test piece; the section diameter of the testing machine base is less than the section diameter of the asphalt concrete test piece; the section diameter of loading platen of the testing machine is identical with the section diameter of the testing machine base.

The invention belongs to the technical field of fume tail denitration by using a selective catalytic reduction method in a power plant, and particularly relates to an on-line power plant SCR (Selective Catalytic Reduction) denitration system catalyst activity monitoring method which mainly comprises the following steps: 1, obtaining a laboratory to perform activity detection on fresh catalysts of the same specification, so as to obtain the activity of the fresh catalysts that alpha0 is equal to 1, wherein an optimal denitration efficiency which can be achieved through the fresh catalysts is eta0; 2, in practical operation of a machine set, on-site property testing is performed to an SCR denitration system so as to obtain SCR practical operation data and property parameters; 3, calculating the real activity of the present catalysts by using the SCR catalyst activity modifying method provided by the invention. The invention aims to provide the on-line SCR denitrition system catalyst activity modification calculation method, the problem that the calculated activity is deviated from an actual value because of laboratory sampling representativeness problems and over-ideal reaction condition is solved, and the accuracy and the real-time capability in catalyst activity detection are improved.

This invention discloses an apparatus for measuring the lubrication of axial plunger pump auxiliary. Its hydraulic power system is composed of main oil line and loading oil line, wherein main oil line serves to provide hydraulic oil to test bench of lubricant film, and loading oil line serves to provide relevant pressing force to auxiliary to balance hydraulic backward thrust from seal band; test bench of lubricant film is to test auxiliary lubrication under various working situations; monitoring and controlling system is to monitor the experiment status in real time and to collect multiple working parameters during the experiment to accomplish the analysis and process of the datum in measuring experiment. Computer is employed to accomplish the on-line monitoring of various working situations to ensure high safety and stability.

The invention discloses a test set for detecting properties of a fluid control valve. The test set comprises an electrical control device, a basic experiment table and a measurement control device, wherein the electrical control device supplies power to the basic experiment table and the measurement control device; a low-pressure oil source and a high-pressure oil source which are positioned in the basic experiment table provide low-pressure test oil and high-pressure test oil with certain pressures, flow rates and temperatures as test sample; the measurement control device is connected with the basic experiment table, and used for acquiring test parameters of a test sample in the basic experiment table through a sensor and acquiring parameters of the basic experiment table through the sensor; and the measurement control device controls the pressures, flow rates and temperatures of the low-pressure test oil and the high-pressure test oil through the low-pressure oil source and high-pressure oil source on the basic experiment table. The test set can provide actually applied external conditions for the fluid control valve, so that the real object sample of the fluid control valve can be subjected to independent property testing without the original application system.

The invention, which relates to the technical field of dielectric property testing of a dielectric material, provides a free space terminal short-circuit system for temperature changing measurement of a dielectric property of a dielectric material. The system comprises a material heating system, a millimeter-wave broadband horn antenna, a signal energy transmission receiving system, a vector network analyzer, a water cooling system, and a vacuum-pumping system. The millimeter-wave broadband horn antenna is fixed right above the material heating system; and the vacuum-pumping system is connected with the signal energy transmission receiving system by a cable. A testing signal passes through a conversion adapter, an isolator, and a coupler and reaches the antenna; the signal is reflected by a tested sample and the reflected signal passes through the antenna; and the coupler carries out coupling and the processed signal is coupled into the vector network. According to the invention, the isolator and the coupler are used to simplify a calibration process and shorten calibration and testing time; the whole system can use a mobile platform to complete testing under the heating device idling and no-idling circumstances at the same temperature, thereby substantially improving the testing efficiency.

In connection with a classification system for classifying media entities that merges perceptual classification techniques and digital signal processing classification techniques for improved classification of media entities, a system and methods are provided for automatically classifying and characterizing melodic movement properties of media entities. Such a system and methods may be useful for the indexing of a database or other storage collection of media entities, such as media entities that are audio files, or have portions that are audio files. The methods also help to determine media entities that have similar, or dissimilar as a request may indicate, melodic movement by utilizing classification chain techniques that test distances between media entities in terms of their properties. For example, a neighborhood of songs may be determined within which each song has similar melodic movement properties.

A high throughput method to determine an amount of a comonomer in a copolymer sample of a copolymer system comprises the steps of providing a plurality of copolymer samples; creating an array of the copolymer samples; measuring a sample complex modulus of each of the copolymer samples at a comparison phase angle; and determining the amount of a comonomer in the copolymer sample by comparing the sample complex modulus to a calibration curve, wherein the calibration curve relates a concentration of the comonomer in the copolymer sample to a complex moduli of the copolymer sample determined at the comparison phase angle. A method of determining the amount of a comonomer in both a single copolymer sample, and in a high throughput scheme using the crossover modulus is also disclosed.

The invention discloses a mechanical sealing property testing device. An electric main shaft is connected with a single cantilever working main shaft; floating support of the single cantilever working main shaft is achieved by virtue of the geometric pressure compressing function of a moving ring end surface and a static ring end surface; the edge end of a force measurement sleeve is of a flange structure; an axial force strain piece is arranged on the force measurement sleeve; a shaft sleeve sleeves the single cantilever working main shaft and penetrates through end covers at the left end and right end of a sealing cavity; the shaft sleeve is slidably connected with the single cantilever working main shaft in a sliding manner in the axial direction and in a positioning manner by using an embedding block in the circumferential direction; two sections of threads of which the screw pitches are equal and the spiral lines are in opposite directions are formed in the shaft sleeve; the threads are respectively screwed with a left screw nut and a right screw nut; the back sides of two push rings respectively contact two moving ring bases; the moving ring bases are connected with the shaft sleeve in an sliding manner in the axial direction and in a positioning manner in the circumferential direction; a through hole which is communicated with a sealed end surface is formed inside a static ring; an infrared probe is arranged inside the through hole. Due to the structural design, measurement on property parameters such as large diameter and high rotation speed of mechanical sealing, particularly the measurement on the axial force and the temperature between sealed end surfaces can be achieved.

The invention discloses testing equipment for the mechanical property of intravascular stents. The testing equipment comprises an image acquiring and processing module, a control end, a data acquiring module, an automatic loading module and a squeezing resistance testing device which are sequentially connected in series. The testing equipment for the mechanical property of the intravascular stents can also comprise an expansion property testing device, a flexibility testing device, a removing force testing device and a conveyance property testing device. The testing equipment with the structure can perform multifunctional mechanical property test for the intravascular stents.

The invention relates to an explosive detonation property testing system under a pulse high voltage and a tested explosive loading part. The microseond-stage pulse high voltage of the required pulse width is generated by a capacitive energy storage and charging unit and a pulse width control unit, and applied to the tested explosive loading part; then, a tested explosive is ignited by an ignition and explosion propagation unit in time sequence; and finally the high voltage resistance, the time sequence ignition stability, the detonation output property and the like of the tested explosive are measured by utilizing a detonating velocity and detonation voltage testing unit and a high voltage resistant testing unit under the microseond-stage pulse high voltage condition of the required pulse width. The explosive detonation property testing system and the tested explosive loading part are applicable to the explosive detonation property testing under the pulse high voltage, and have the characteristics of low cost, simple structure, adjustable pulse width and the like.

The invention discloses an ultra-high temperature heat-insulating property testing device and method. The ultra-high temperature heat-insulating property testing device comprises a heating furnace, wherein the heating furnace comprises a lower furnace body and an upper furnace body; the lower furnace body comprises a base and a base heat insulation layer arranged on the base; the top of the base heat insulation layer is downwards recessed to form a sample containing chamber; the upper furnace body comprises a furnace shell, an electric heating body arranged in the furnace shell, and a furnace shell heat insulation layer arranged between the electric heating body and the furnace shell; an air inlet and an air outlet communicated with the interior and exterior are formed in the furnace shell; valves are respectively arranged on the air inlet and the air outlet; after the upper furnace body is combined with the lower furnace body, the furnace shell and the base are combined to form a closed furnace chamber; the electric heating body is contacted with a heat-conducting gasket arranged on the top surface of the sample; contact-type heat conduction is realized between the electric heating body and the sample by virtue of the heat-conducting gasket; and the furnace shell heat insulation layer and the base heat insulation layer are contacted to form an overall heat insulation layer on the outer sides of the sample and the electric heating body. According to the device and method disclosed by the invention, the ultra-high temperature actual operation conditions can be simulated in a closed environment to the greatest degree.

The invention belongs to a coating property testing technology and discloses a testing device for the thermal shock property and the thermal cycle oxidation property. The device comprises a heating furnace, a support, a specimen bracket, three sets of stepping motors, a controller and a cooling medium, wherein the heating furnace is a vertical heating furnace and provided with an upward opening, so that specimens can go in and out conveniently; the support mainly plays a role in fixing the stepping motors and the controller; two furnace lids are arranged on the specimen bracket, the specimens can be hung below the furnace lids, and the two furnace lids can be used alternately to guarantee the temperature of a furnace chamber; the controller controls the stepping motors through a set program; the stepping motors control specimen passing speeds and directions as well as alternation of the furnace lids; the cooling medium is provided for a thermal shock test and can realize water cooling or air cooling.

The invention discloses an asphalt-aggregate interface adhesion property testing method. The method comprises the following steps: A, selecting three testing liquids which are not dissolved in asphalt and have known surface energy; B, heating the asphalt or a warm mixing agent till a flowing state is achieved, respectively casting on a plate, cooling to form a smooth plane, and grinding aggregate into a smooth plane of which two sides are parallel to each other; C, respectively dripping the three liquids on the smooth plane formed by the asphalt, the warm mixing agent or the aggregate in the step B, and respectively measuring contact angles of three testing liquids on the surface of the asphalt, the aggregate or the warm mixing agent; D, calculating the surface energy of the asphalt, the aggregate or the warm mixing agent; E, respectively constructing adhesion models in different systems, and calculating adhesion work of the adhesion models; and F, establishing energy parameters, and evaluating the influence of an additive to the adhesion property of asphalt-aggregate in an implementation sequence of steps A, B, C-F or B, A, C-F. By adopting the asphalt-aggregate interface adhesion property testing method, the influence of the additive to the adhesion property of the system can be evaluated.

The invention relates to a molybdenum and molybdenum alloy bar/tube high-temperature tensile detection device and method. The device comprises a universal testing machine, a high-temperature furnace arranged between upper and lower cross beams of the universal testing machine, an extensometer which extends from the side wall of the high-temperature furnace into the furnace, a temperature controller connected with the high-temperature furnace, an upper clamp and a lower clamp which have the same structure, a clamp cooler and an inert atmosphere protector. The device can safely and stably complete the tensile property testing of the molybdenum and molybdenum alloy bar/tube at the temperature of 1200 DEG C, thereby satisfying the high-temperature tensile testing demands and enhancing the reliability of detection data.