63 results about "Test segment" patented technology

A light absorption probe includes an arm segment, a main segment located at one side of the arm segment, a testing segment connected to another side of the arm segment, and a light absorption coating layer. The main segment has a soldering end portion and an extending end portion respectively located at two opposite sides thereof along a predetermined direction. The testing segment has an upright shape along the predetermined direction and includes a pinpoint portion and an upright portion that connects the pinpoint portion and the arm segment. The light absorption coating layer covers the upright portion, and the pinpoint portion is exposed from the light absorption coating layer. Through the light absorption coating layer, the testing segment only forms an observation point at the pinpoint portion in an observation process of a detection apparatus.

The invention discloses a gas pipeline leakage on-line monitoring and positioning test device and a control method thereof. The gas pipeline leakage on-line monitoring and positioning test device comprises a test pipeline and a data terminal, the test pipeline is used for transmitting gas and providing a data source for the data terminal, and comprises a supply section, a test section and a discharge section; the test section comprises the monitoring device, a leakage simulation device and an observation device, the longitudinal and transverse propagation rules of gas leakage in the pipeline are researched by simulating and testing pipeline leakage and analyzing monitored data, and a leakage positioning formula and a leakage severity degree judgment model are established. According to the verifiable test device, accurate positioning of the simulation leakage device on the longitudinal and cross sections of the pipeline and judgment of the leakage severity can be achieved, support is provided for practical application of a monitoring and positioning device for urban gas pipeline leakage, and the online monitoring and positioning level of fluid pipeline leakage is effectively improved.

The invention discloses a force measurement wind tunnel test device with a jet flow control airfoil profile, which belongs to a flow control technology and at least comprises but is not limited to a test section, an end plate, an airfoil profile main wing and an airfoil profile flap, accommodating cavities for accommodating the end plates are formed in the side walls of the two sides of the test section, the end plates are movably arranged in the accommodating cavities, the airfoil flap is connected with the airfoil main wing, the airfoil main wing is arranged between the end plates on the two sides, and the end face, far away from the airfoil main wing, of the end plate on one side is connected with the balance through a connecting piece; beveling parts are arranged between the wing-shaped flaps and the end plates; according to the scheme, angular separation and wingtip vortex between the airfoil profile and the end plate can be effectively inhibited, so that the force measurement result is closer to the value of a two-dimensional airfoil profile.

The utility model discloses an online monitoring and positioning test device for gas pipeline leakage. The online monitoring and positioning test device comprises a test pipeline and a data terminal, the test pipeline comprises a supply section, a test section and a discharge section; the supply section comprises a gas source, a pressure regulating device, a first pressure transmitting device and a first flow transmitting device which are sequentially arranged on the test pipeline, and the test section comprises a monitoring device, an observation device and a leakage simulation device which are arranged on the test pipeline. And the discharge section comprises a second pressure transmitting device, a second flow transmitting device and a pressure relief device which are sequentially arranged on the test pipeline. According to the test device, accurate positioning of a simulation leakage device on longitudinal and cross sections of the pipeline can be realized, support is provided for practical application of a monitoring and positioning device for urban gas pipeline leakage, and the on-line monitoring and positioning level of pipeline leakage of fluid such as water, gas, heat, oil and the like can be effectively improved by popularization and application of the test device.

The present application provides a network testing method and device based on the FTTR networking structure. In response to the network test command initiated by the test terminal, the main gateway determines the target test segment based on the IP address; when the target test segment is from the main gateway to the sub-gateway, the main gateway generates a first test instruction and sends it to the sub-gateway; the sub-gateway is used to perform data testing according to the first test instruction to obtain a first test result, and feed back the first test result to the main gateway; or when the target test segment is from the sub-gateway to the main gateway, the main gateway sends the network test command to the sub-gateway; the sub-gateway is used to generate a second test instruction based on the network test command, and send the second test instruction to the main gateway; the main gateway performs data testing according to the second test instruction to obtain a second test result. The above method can quickly locate the problem node and improve the efficiency of troubleshooting; through testing, the performance bottleneck in the network can be found, which is convenient for targeted optimization and improves the overall network efficiency.

The invention discloses a microtube vibration wind tunnel test test section and a test method, and belongs to the technical field of heat exchange equipment. The main body of the test section comprises five parts, namely a stable section, a flow guide section, a test section, a microtube core body and a test system, is of a spiral periodic arrangement complex microtube bundle structure, and provides a vibration wind tunnel test. Incoming flow air flows into the testing section from the periphery through the flow guide section and then enters the microcapillary core body. The micropipe core body is an annular cylindrical core body provided with the micropipe row, incoming air flows across the micropipe row in the core body, disturbs the micropipe row and vibrates the micropipe row, finally, the air flows through the exhaust flow guide cone and is exhausted along a channel, and the whole process enables air flow to simulate the real flowing condition. Meanwhile, a laser displacement sensor is adopted to measure vibration displacement, and the structural vibration of the microcapillary is tested. The test section can realize vibration displacement measurement of the complex spiral microcapillary structure, and provides reference for structural reliability evaluation of the heat exchange microcapillary structure in a complex flow field.

The utility model provides a multi-segment splicing bending test loading device for shield tunnel lining segments, and belongs to the field of lining segment tests. The device comprises a door-shaped support and a to-be-detected segment unit, the to-be-detected segment unit is of an arc sheet structure formed by splicing a plurality of to-be-detected segments, the to-be-detected segment unit is arranged below the door-shaped support, and supporting plates abutting against the ends of the to-be-detected segment unit are arranged on the two sides of the bottom of the door-shaped support respectively. The two supporting plates are obliquely arranged towards the to-be-tested segment unit, a pressure loading mechanism is arranged on a top cross beam of the door-shaped support, and the pressure loading mechanism is configured to move towards the outer cambered surface of the to-be-tested segment unit. By adopting the multi-segment assembly bending test loading device for the shield tunnel lining segments, provided by the embodiment of the utility model, the problem that the accuracy of a test result is relatively low in the prior art can be solved.

The invention discloses a buffeting load multi-point synchronous measurement device and method for a large-span arch bridge wind tunnel test. The device comprises a base, a wind direction angle adjusting mechanism, an arch bridge truss model, a model supporting system and a multi-channel synchronous data acquisition system. The arch bridge truss model comprises at least two test segments embedded with six-component balances, the six-component balances are located in the geometric centers of the segments and fixedly connected with the main framework through rigid force transmission structures, and gaps are formed between the adjacent segments; the wind direction angle adjusting mechanism rotates around a vertical shaft, and the model supporting system is matched with the wind attack angle adjusting mechanism through a supporting stand column to achieve overall pitching of the arch bridge truss model so as to adjust the wind attack angle of the arch bridge truss model. And the multi-channel synchronous data acquisition system synchronously acquires time history signals of the three-dimensional aerodynamic force borne by each test section. According to the invention, double-degree-of-freedom independent adjustment, multi-point synchronous force measurement and load field reconstruction can be realized, the method is suitable for arch ribs with different curvatures, and meanwhile, the buffeting load identification precision of the large-span arch bridge can be remarkably improved.

The present application relates to the technical field of material testing, in particular to a sample and tool for testing Z-direction fatigue performance of laminated composite material, the sample is axisymmetric dumbbell-shaped, comprising a middle test section and two end holding ends, and the bonding interface is located in the test section; the diameter of the test section is 5-10 mm, and the diameter of the holding end is greater than or equal to 2 times the diameter of the test section; the thickness of the holding end is not less than 5 mm, and the axial distance from the inner side end face to the bonding interface is not less than 3 mm, so that the interface is ensured to be in a uniform stress area; the transition area is smoothly connected by a circular arc with a radius of greater than or equal to 2 mm. The present application can accurately and repeatedly characterize the Z-direction interface fatigue performance on a conventional fatigue testing machine, and solves the problem that the traditional composite material joint sample cannot test the real joint interface performance.

A disclosed method may include (i) detecting a codec rate change during a voice quality test of a testing UE that emulates a subscriber UE connecting to a base station in a mobile network such that a test segment during which the codec rate change occurred is identified and (ii) reducing, based on detecting that the codec rate change occurred during the test segment, a weight of the test segment within a voice quality assessment.

The utility model provides a circuit board V-CUT fool-proof structure, and relates to the technical field of V-CUT fool-proof structures, the circuit board V-CUT fool-proof structure comprises a test network and two pads which are arranged on a circuit board body, and the test network is arranged between the two pads; the test network comprises a test section arranged along a V-CUT path and two connection sections respectively connected with two ends of the test section, the two connection sections are arranged in parallel, and the two connection sections are respectively connected with the two bonding pads; according to the utility model, the test network with the connecting sections and the test sections is matched with the bonding pad, so that the V-CUT process test can be effectively completed, the fool-proof effect is good, the two connecting sections are arranged in parallel, the waist line distance is small, the structure is suitable for a circuit board with a small reserved connecting position, and the application range is wide.

The tire uniformity testing machine section width detection device provided by the application, when it is necessary to adjust to the test section width, the stop swing arm limits the rotation of the combined assembly of the stop chuck, the width adjusting nut, the lower flange and the lower rim, the laser displacement sensor feeds back the position of the stop chuck in real time, the control device controls the lower spindle driving mechanism to drive the rotation of the lower spindle, the lower spindle drives the rotation of the outer threaded sleeve, the relative rotation of the threaded pair between the outer threaded sleeve and the width adjusting nut occurs, at this time, the combined assembly of the stop chuck, the width adjusting nut, the lower flange and the lower rim axially displaces along the outer threaded sleeve, the position of the lower rim changes, and since the position of the upper rim is fixed, the distance between the upper rim and the lower rim changes, thereby achieving section width adjustment. Since the laser displacement sensor is introduced, the uniformity testing machine does not need to be adjusted to the zero section width position, thereby improving the section width adjustment efficiency and simplifying the section width adjustment process.

The present invention discloses a test bench for testing the flow noise of a sea pump that simulates the sound boundary of a real ship, comprising a sea pump and an inlet pipeline. The sea pump is set up on the lake embankment through a base; the inlet pipeline comprises a connected horizontal section and a vertical section, the horizontal section of the inlet pipeline is a test section, the outlet of the horizontal section is connected to the inlet of the sea pump, and the inlet of the vertical section of the inlet pipeline extends below the water surface of the lake; a pipeline hydrophone is arranged in the test section. The present invention also discloses a design and installation method for testing the flow noise of a sea pump that simulates the sound boundary of a real ship. The beneficial effects of the present invention are: determining the key influencing parameters of the acoustic transmission impedance conditions of the sea pipeline system and the boundary conditions of the infinite radiation sound field of the pipe mouth of the real ship sea system, and based on this, designing a test bench that can simulate the acoustic impedance conditions of the pump-excited pipeline sound transmission of the real ship sea system to the greatest extent.

The invention provides a test platform for a multistage pump. The test platform comprises an experimental platform, a power support outlet assembly, a turnover mechanism and a movable mounting platform, the experiment platform has a two-layer structure, the upper layer is an installation and maintenance area, and the lower layer is a box body with a test medium; the power support outlet group is mounted on the upper layer of the experimental platform and is connected with a multi-stage pump test section; the turnover mechanism is located between the experiment platform and the power supporting outlet assembly and used for driving the power supporting outlet assembly to drive the multi-stage pump test section to turn over between a vertical test position in the box body on the lower layer of the experiment platform and a horizontal maintenance position of the installation maintenance area; the movable installation platform is arranged on the experiment platform and used for moving to the position below the multistage pump test section and providing support when the multistage pump test section is located at the horizontal maintenance position. According to the invention, the multi-stage pump test section can be conveniently and quickly mounted, dismounted and overhauled and tested.

The invention discloses a dynamic strain measurement method, a test block and a testing machine for an ultrahigh-strength material greater than 2GPa. The dynamic strain measurement method comprises the following steps: measuring and acquiring workpiece measurement parameters of each rate test under various rate tests and the highest temperature T of a test section of the test piece; based on the workpiece measurement parameters, actual workpiece parameters are obtained through calculation; and fitting to obtain a dynamic stress-strain curve for simulation analysis based on a plurality of groups of workpiece actual parameters obtained by various rate tests and the highest temperature T of the test section of the test piece. Measurement of the temperature of a test section of a test piece is introduced, temperature measurement parameters are added into the model to construct a new Johnson-Cook constitutive model, a calculation method for correcting strain rate and temperature coupling based on the new Johnson-Cook model is adopted, test data are converted into constitutive parameters capable of being directly used for simulation, and data practicability is improved; and the correction precision of the influence of the introduction of the temperature data on the flow stress is greatly improved. The test piece is prevented from slipping in the clamp by adopting two measures of positioning pins, positioning holes and crossed lines.

An evaluation device for evaluating a test section, in which a laminar flow transitions to a turbulent flow, of a rough surface on which a fluid flows includes: an acquisition unit configured to acquire a thickness of a laminar boundary layer at an inlet of the test section; a calculation unit configured to calculate turbulent energy and a flow direction distribution of frictional resistance coefficient values at the rough surface by performing a direct numerical simulation based on the acquired thickness of the laminar boundary layer; and an output unit configured to output information based on a result of calculation.

The application discloses a composite detector assembling process and an automatic production line, wherein the automatic production line comprises a burning station, an FCT test station, a coating section, an assembling section and a test section which are sequentially arranged. In the embodiment of the application, the burning station, the FCT test station, the coating section, the assembling section and the test section are optimally combined to sequentially perform program burning, three-proofing paint spraying and shell assembling on the PCBA by using the composite detector assembling process and the automatic production line, so that the automatic production of the composite detector is realized, the production efficiency is greatly improved, the cost is reduced, meanwhile, each index of the composite detector is tested and test data is recorded during the assembling process, the performance of the finished product is ensured, data tracing in each process is realized, the data of the problem process can be adjusted in time when problems occur in the subsequent process, the reliability of the whole assembling process is improved, the yield of the product is improved, and the intelligent degree of production is greatly improved.

The utility model discloses a double-sided testing machine, which comprises a feeding device, a first testing line, a second testing line, a first manipulator and a second manipulator, the first test line and the second test line are arranged at an interval, a middle area in the first test line and / or a middle area in the second test line are / is provided with a temporary storage station, and the temporary storage station divides the first test line into a first front test section and a first rear test section; the second test line is divided into a second front test section and a second rear test section, and the first manipulator and the second manipulator are arranged between the first test line and the second test line; the first manipulator is at least used for transferring a to-be-tested product on the feeding device into the first front test section, the second front test section or the temporary storage station; the second manipulator is at least used for transferring the to-be-tested product in the temporary storage station into the first rear test section or the second rear test section; the utility model mainly solves the problem of how to improve the test efficiency of the double-sided test of the product.

The invention discloses a metal single shear sample and clamp for a pure shear stress experiment, and belongs to the technical field of material mechanical property research, the sample is of a cylindrical blocky integrated structure symmetrically provided with two notches in the radial direction, and the sample comprises two loading sections, two transition sections and a test section; the cross section of each loading section is in an arch shape, the two loading sections are oppositely arranged and are symmetrical in the axial direction, and first screw fastening holes are symmetrically formed in the two loading sections in the axial direction; the transition section is a radial bulge structure in the middle of the opposite end surface of the loading section; the testing section is in a square column shape, and the two side faces of the testing section are connected with the two transition sections respectively. The cross section area of the test section is smaller than that of the transition section. Axial compression loads can be applied to the axial end faces of the two loading sections through the bosses on the clamp, so that the test section can form a pure shear stress state in a shear area, and the purpose of researching elasticoplastic deformation and fracture behaviors of a metal material in the pure shear stress state can be achieved.

A light scattering probe includes an arm segment, a main segment located at one side of the arm segment, and a testing segment connected to another side of the arm segment. The main segment has a soldering end portion and an extending end portion respectively located at two opposite sides thereof along a predetermined direction. The testing segment has an upright shape along the predetermined direction and includes a pinpoint portion and an upright portion that connects the pinpoint portion and the arm segment. The upright portion has a roughened surface arranged on an entirety of an outer surface thereof. The roughened surface has an arithmetic average roughness (Ra) within a range from 0.1 μm to 1 μm. Through the roughened surface, the testing segment only forms an observation point at the pinpoint portion in an observation process of a detection apparatus.

The present invention relates to the field of glue testing, and discloses a space capsule-specific glue curing test method and a curing test device. The key points of its technical solution are: a space capsule-specific glue curing test device, comprising a test platform, a bottom plate provided on the test platform, a glue application port and a detection port a provided on the bottom plate, and a glue application frame connected to the glue application port provided on the top of the bottom plate. The present invention avoids the problem of difficult cleaning caused by the use of a rigid film layer directly attached to the structural surface of the test device in the prior art. The overall structure of the present invention is compact, the operation is stable, the test process has a high degree of automation, and can truly restore the service state of the glue in the use environment. In addition, by applying glue to an independent test film, it can be directly rolled out after completing a round of testing to expose a new test section without cleaning the platform body, which completely solves the problems of difficult cleaning, low efficiency and platform damage, and significantly improves the practicality and engineering adaptability of the test.

The present application relates to the technical field of wind power blade manufacturing, and discloses a root wedge test piece and a test tool. The root wedge test piece comprises a test sample main body, at least two groups of embedded sleeves are arranged in the test sample main body, and a root wedge is arranged between adjacent embedded sleeves; at least one root wedge has a test section extending out of the test sample main body. The test tool comprises a clamping assembly and a connecting assembly for connecting with a tensile testing machine, the clamping assembly has a clamping space for clamping the test section of the root wedge, and the connecting assembly is connected with the clamping assembly. Since the test section extends out of the test sample main body, the test tool can be directly installed on the test section to perform a bearing capacity test and evaluate the safety of the root structure. The root wedge test piece provided by the present application can reduce the difficulty of the bearing capacity test and facilitate the detection of the operator.

The invention relates to a method for process monitoring of a laser joining process at an interaction zone 6 of a workpiece 2, wherein the laser joining process is observed with an event camera 7 and event data is generated by the event camera 7, wherein the event data is transformed into transformation data, wherein the transformation data is evaluated via a machine learning module 12 and the machine learning module 12 assigns a label 13 - 17 from a label set with at least two labels 13 - 17 for a test section of the laser joining process, wherein process information is assigned to the labels 13 - 17.

A cantilever probe module includes a plurality of first probes and a plurality of second probes. Each of the first probes includes a first arm segment, a first main segment, and a first testing segment, the latter two of which are respectively connected to two ends of the first arm segment. Each of the second probes includes a second arm segment, an extending segment and a second testing segment both respectively connected to two ends of the second arm segment, and a second main segment that is connected to the extending segment. A height of the extending segment is 5% to 50% of a height of the second main segment. When the first main segments of the first probes and the second main segments of the second probes are staggeredly fixed onto a substrate, the first testing segments and the second testing segments are arranged in one row.

The application belongs to the technical field of testing, and specifically provides a simulation device and a testing method for radio frequency ablation instrument testing. The simulation device for radio frequency ablation instrument testing comprises a water pool, a test model, a clamping mechanism and a driving mechanism. The test model is fixed in the water pool, and the driving mechanism drives the catheter to reciprocate along the test channel formed by the test model through the clamping mechanism to perform bending fatigue testing. The test model comprises a first test section and a second test section which are continuous but have opposite bending directions. During testing, the test section of the catheter can be subjected to bending fatigue testing in the first test section and the second test section in turn by changing the stroke range of the reciprocating motion of the test section of the catheter through the driving mechanism, and the rotation or re-clamping of the catheter is not required during the whole process. In this way, the manual operation steps are eliminated, which helps to realize the automation of the testing process, and the unattended operation can be realized during long-term durability testing.

A kind of test system of aircraft surface structure gap and seal piece flow-induced sound vibration, wherein the test system is substantially a longitudinally extending multi-pipe segment closed structure, the multi-pipe segment closed structure is mounted on a support, and includes gas supply section, noise elimination and flow stabilizing and pressure stabilizing section, test section and gas release section connected in sequence;Wherein the test section includes sample mounting part, the test sample container of the sample mounting part is detachably connected, the pressure and temperature in the test sample container are controlled;The test section further includes microphone and vibration meter.The system can simulate aircraft cruising speed flow field and can simulate temperature and pressure difference environment when aircraft is running, obtain flow-induced noise spectrum, flow-induced vibration spectrum and transfer characteristics of typical structure gap and seal piece in simulated aircraft working environment, and key data in the field of civil aircraft vibration reduction and noise reduction control technology.

The present invention relates to the technical field of natural gas hydrate reservoir permeability monitoring, and particularly to a hydrate downhole permeability monitoring device. A hydrate downhole permeability monitoring device is characterized in that it includes a sealed shell, a pressure system, a fluid isolation system, a control and data processing system, a detection system, and a plurality of valve bodies, wherein the fluid isolation system confines the sealed shell in the test section, the pressure value in the test section is detected by the detection system, and the pressure value in the test section is adjusted by the pressure system to disturb the pressure in the test section. Through the change in the pressure value, a pressure change curve is obtained to calculate the permeability of the hydrate reservoir. This solves the problem in the prior art that the pressure reduction capacity is insufficient during cable formation testing, resulting in a small pressure wave influence range and inaccurate permeability results.

A method and apparatus include a test road having a predefined length and a testing procedure that is comprised of a plurality of scenarios each having a predefined distance range, wherein at least one scenario has the predefined distance range being greater than the predefined length, and wherein the at least one scenario is divided into a plurality of test segments that are of lengths that are less than the predefined length. A test vehicle with at least one ADB lamp is in a fixed location on the test road. A data collection vehicle with a plurality of stimulus lamps and a plurality of sensors is movable on the test road relative to the test vehicle and collects ADB data for each test segment. One or more controllers receive ADB data from the data collection vehicle for each test segment and combines the ADB data from each test segment to provide one ADB test result for the at least one scenario.

This invention provides an ECMS strategy optimization method based on navigation information-based condition clustering results, comprising: performing offline simulation based on real vehicle test data to obtain the segmentation of each test data segment; training a condition recognition neural network model on the test segments; cleaning and repairing key road condition signals in the navigation information to obtain repaired data; dividing the mileage window based on the repaired data to obtain corrections for congestion and gradient; calculating the condition characteristic parameters of each time window under the actual navigation repair data using the time windows divided based on the actual navigation repair data in steps three and four; clustering the test conditions according to the condition characteristic parameters and the neural network model, and matching the corresponding optimal equivalent factor according to the database in step one; and correcting the navigation clustering test condition output results based on the optimal equivalent factor obtained from historical vehicle speed clustering. This invention significantly reduces fuel consumption.

This invention provides a test device and method for the overall torsional stiffness of tunnel segments and strata considering the grout solidification process. The test device includes a grout loading system, an overall torsional stiffness testing device for tunnel segments and strata, a torque loading system, and a grouting device. The overall torsional stiffness testing device is connected to both the torque loading system and the grouting device, and the grouting device is connected to the grout loading system. The test device includes a model box, tunnel segments, partitions, multiple displacement sensors, and a data acquisition instrument. The tunnel segments and partitions are installed inside the model box. The partitions are installed between the inner wall of the model box and the tunnel segments. The space between the outer surface of the partitions and the inner wall of the model box is a sand zone, and the space between the inner surface of the partitions and the outer surface of the tunnel segments is a grout zone. The beneficial effect of this invention is that the overall torsional stiffness testing device for tunnel segments simulates torsional deformation of the test segments through the torque loading system.