29 results about "Test segment" patented technology

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 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 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.

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.

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 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.

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.

The invention discloses a non-metal pipeline aging performance in-situ sampling test structure and method, and belongs to the technical field of non-metal pipeline tests.The test structure is mainly composed of a first valve, a second valve and a third valve which are connected in series, the front end area of the first valve and the rear end area of the third valve are a first conventional access section and a second conventional access section which are used for accessing a normally used pipeline, and the area among the first valve, the second valve and the third valve is a test section which is divided into a first test section and a second test section which are used for accessing a test pipeline; and in cooperation with a corresponding testing method, parts, which are prone to aging, swelling and other material deterioration, in the non-metal pipeline can be regularly disassembled and replaced in the using process, and material performance change testing can be conducted.

The invention relates to the technical field of tunnel construction, in particular to a duct piece pouring method for reducing the surface area ratio of a honeycomb pitted surface, which comprises the following steps: S1, pouring at least four groups of test duct pieces, and adopting different vibrating frequencies or vibrating durations for different test duct pieces, taking the vibration frequency and the vibration duration of the test segment with the lowest surface area ratio of the honeycomb pitted surface as target frequency and target time respectively; s2, the surface of the steel mold is cleaned, and the steel mold is coated with a water-based release agent; s3, concrete is poured into the steel mold, and a vibrator is used for vibrating the concrete according to the target frequency and the target time; the concrete is cured, and pouring of the shield segment is completed; and S4, the steps from S2 to S4 are repeated till pouring of a preset number of shield segments is completed. The technical problem that a shield segment produced through an existing shield segment pouring method has a high honeycomb pitted surface surface area ratio and cannot meet the construction requirement of a nuclear power drainage tunnel can be solved.

The embodiment of the utility model discloses a connecting structure of a motor testing device. The connecting structure comprises a connecting cylinder, a limiting block, a connecting shaft and a spline housing, the connecting cylinder is used for being connected with a dynamometer, the connecting shaft comprises a middle section, a connecting section and a testing section, the connecting section and the testing section are located at the two ends of the middle section respectively, and the connecting cylinder is arranged on the outer side of the connecting section in a sleeving mode and connected with an outer spline on the connecting section through an inner spline. The connecting section and the connecting cylinder are in sliding fit in the axis direction of the connecting shaft, and the end of the connecting section and the inner end face, opposite to the end of the connecting section, of the connecting cylinder are spaced by a set distance. The spline housing is detachably installed on the test section. According to the embodiment of the invention, the transmission fit between the connecting shaft and the dynamometer can be realized through the spline fit between the connecting cylinder and the connecting section, and the sliding fit between the connecting shaft and the connecting cylinder in the axial direction can also be realized, so that the whole process is simpler and more efficient.

The application discloses a condensation water hammer test device under a sloshing condition of anti-backflow, relates to the field of heat transfer and fluid mechanics, and is characterized by comprising a main loop steam pipeline, an anti-backflow device and a test section pipeline, wherein the anti-backflow device comprises a steam injection channel, a subcooled water pipeline, a baffle and a torsional spring; the main loop steam pipeline is connected with a steam generator and the steam injection channel; the test section pipeline is connected with the subcooled water pipeline; the baffle is installed at one end of the steam injection channel connected with the subcooled water pipeline; and the baffle and the steam injection channel are connected through the torsional spring. The application can conduct condensation water hammer test on a test section pipeline with a full-scale pipe diameter under a six-degree-of-freedom sloshing condition, and can prevent cold water from flowing back into a steam system due to pipeline swinging and tilting during the test, so that the safety and stability of the test process are ensured.

This application relates to a method, apparatus, device, and storage medium for aircraft flight modal analysis, belonging to the field of aircraft modal detection technology. It includes obtaining segment stiffness compensation parameters based on ground test temperature parameters, flight thermal distribution parameters, and segment material parameters; obtaining equivalent connection stiffness compensation parameters based on segment docking surface parameters, ground test segment docking surface load parameters, and flight segment docking surface load parameters; and obtaining flight modal parameters based on reference segment stiffness distribution parameters, segment stiffness compensation parameters, equivalent connection stiffness compensation parameters, and aircraft mass distribution parameters. By superimposing and considering the segment stiffness changes caused by high flight temperatures and the segment connection stiffness changes caused by flight loads, the influence of high flight temperatures and loads on modal parameters is accurately compensated, thereby improving the stability of the aircraft in complex dynamic environments. This solves the problem in existing technologies that may lead to control system instability and affect the safety of aircraft flight.

A solder receiving 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 main segment has a plurality of solder receiving holes that are arranged along a top edge of the soldering end portion and that are arranged in one row along an extending direction perpendicular to the predetermined direction. Any two of the solder receiving holes adjacent to each other are provided with one inner supporting arm therebetween. Each of the solder receiving holes can receive a solder, so that the solder does not climb across the solder receiving holes of the one row along the predetermined direction.

A climb-restricting 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 climb-restricting ring. 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. The climb-restricting ring surrounds the main segment along a top edge of the soldering end portion and protrudes from an outer surface of the main segment. The climb-restricting ring has a restriction height along the predetermined direction. The restriction height is within a range from 3 μm to 50 μm. The climb-restricting ring can block a solder from climbing past the climb-restricting ring along the predetermined direction.

The invention relates to the field of explosion testing, in particular to a design for improving the effectiveness of test data in the explosion testing process. The invention aims to provide the shock resistance test device and the test method, so that the material consumption and the manufacturing cost of the high-strength pipe body are reduced, the flow separation is effectively inhibited, the shock wave is guided to stably expand, and the pressure uniformly acts on the surface of the whole test piece. And a guarantee is provided for obtaining real and effective test data. According to the technical scheme, the shock resistance testing device comprises a shock tube and a support used for supporting the shock tube, the support is configured to enable the axis of the shock tube to extend in the horizontal direction, and the shock tube comprises a driving section, an expansion section and a testing section; one end of the expansion section is connected with the driving section, the other end of the expansion section is connected with the testing section, and the caliber is gradually increased in the direction close to the testing section.

A method and a setup comprise a test track of predefined length and a test procedure comprising a plurality of scenarios, each with a predefined distance range, wherein at least one scenario has a predefined distance range greater than the predefined length, and wherein the at least one scenario is subdivided into a plurality of test segments with lengths less than the predefined length. A test vehicle with at least one ADB light is located at a fixed position on the test track. A data collection vehicle with a plurality of stimulus lights and a plurality of sensors is mobile on the test track relative to the test vehicle and collects ADB data for each test segment of the plurality of test segments.One or more controllers receive ADB data from the data collection vehicle for each test segment and combine the ADB data from each test segment to provide an ADB test result for at least one scenario.

A micro electro mechanical system (MEMS) probe includes an arm segment, a main segment, and a testing segment. The main segment is arranged at one side of the arm segment, the main segment defines a layout region arranged inside of an outer contour thereof, and the main segment has a soldering end portion and an extending end portion respectively arranged at two opposite sides of the distribution region along a predetermined direction. The testing segment has an upright shape along the predetermined direction and is connected to another side of the arm segment. The layout region has a plurality of thru-holes that occupy 3% to 70% of a region surroundingly defined by the outer contour. The layout region is spaced apart from the outer contour by a layout spacing that is less than or equal to an inner diameter of any one of the thru-holes.

The invention relates to a method for testing the mechanical load of a test piece, belongs to the technical field of mechanical property testing, and is used for solving one of the problems that the accuracy and authenticity of test data are reduced, test procedures are increased and the test cost is increased by fixing the test piece in a punching mode in the prior art. The method comprises the following steps: 1, inserting the upper part of a test piece into an upper clamping seat, and inserting the lower part of the test piece into a lower clamping seat; 2, the upper force application end of the mechanical load testing device applies upward acting force to the upper portion of the test piece through the upper clamping seat, the lower force application end of the mechanical load testing device applies downward acting force to the lower portion of the test piece through the lower clamping seat, and the high-temperature mechanical property test of the test piece is completed. According to the test method for the mechanical load of the test piece, on the basis of not damaging the test piece, the control accuracy of the stress direction of the test piece is improved, the tensile load uniformly acts on the effective test section of the test piece, and the test authenticity is improved.