374 results about "Life test" patented technology

The invention belongs to the technical field of fatigue life acceleration test equipment, and particularly relates to an acceleration test device and method for the fatigue life of a rubber corrugated pipe limiting structure, the acceleration test device comprises a base and a heat insulation test box, the bottom end of the heat insulation test box is fixedly connected with the upper surface of the base, and two fixing through holes are formed in the outer wall of one side of the heat insulation test box. The device has multiple environment simulation functions, constructs a composite test environment close to the actual working condition, reflects the influence of different environments on the fatigue life of the limiting structure, improves the representativeness of the fatigue life test result of the rubber corrugated pipe limiting structure, realizes automatic failure judgment through resistance real-time monitoring, does not need manual intervention, and improves the test efficiency. The test convenience is improved, the accuracy of the fatigue life test result of the rubber corrugated pipe limiting structure is further improved, the double-sample synchronous test is realized, the time consumption of the multi-sample test is greatly shortened, and the detection efficiency of the fatigue test is remarkably improved.

The invention discloses a ship mechanical and electrical product accelerated life test stress profile generation method and device, a medium and a product, and relates to the field of ship reliability engineering and test.The method comprises the steps that working condition profile data and marine environment stress data of a target ship mechanical and electrical product under a typical navigation task are obtained, and a working condition-environment mapping model is established; according to the designed life target of the target ship mechanical and electrical product, the whole life cycle total damage to the target ship mechanical and electrical product is determined by using the working condition-environment mapping model and the failure physical damage model, an accelerated stress profile is generated by strengthening the stress level with damage equivalence as the principle, an accelerated factor is calculated, and an accelerated life test is performed; and failure data of the failure event is recorded, parameters of the failure physical damage model are calibrated, and the accelerated stress profile is iteratively optimized by using the calibrated failure physical damage model. Accurate and dynamic generation of the accelerated life test stress profile of the ship mechanical and electrical product is realized.

The invention provides a service life prediction method and device for an industrial robot RV speed reducer, and relates to the technical field of speed reducer service life prediction.The method comprises the steps that an acceleration load spectrum is determined according to torque and time history data, and multi-stage loads in the acceleration load spectrum are woven into a program block spectrum according to a preset sequence; all levels of loads in the accelerated load spectrum serve as independent working conditions to be applied to the multi-body dynamic model for dynamic simulation, a load and time history curve set of the key weak component is obtained and input to the cumulative damage model for life calculation, the simulated predicted life is obtained, and a damage cloud picture is generated; taking the program block spectrum as a test loading instruction to carry out an RV speed reducer accelerated life test to obtain a test observation life and a physical failure morphology; if the two are in the corresponding preset deviation range, taking the simulated predicted life as the predicted life of the current RV speed reducer; the problems of long test period, high cost and low reliability of a simulation model are solved.

The invention discloses a full-automatic life test system for an isolation device, which belongs to the field of reliability test of semiconductor devices, and comprises a system host used for providing a test environment and bearing a plurality of test channels; the high-low voltage isolation conversion module is arranged corresponding to each test channel and is used for switching between a high-voltage aging loop and an insulation resistance measurement loop of each channel; the real-time leakage current monitoring module is used for continuously monitoring the leakage current of each isolation device in the high-voltage aging process; the precision measurement and data acquisition module is used for carrying out insulation resistance measurement on the isolation device in a measurement mode; the central control and software system module is respectively connected with the high-low voltage isolation conversion module, the real-time leakage current monitoring module and the precision measurement and data acquisition module, and the central control and software system module is used for automatically triggering and controlling an insulation resistance measurement process according to leakage current data, judging the state of a device according to a measurement result, and outputting the state of the device. And aging and stopping of the test channel are managed.

The invention discloses a gear service life evaluation method, and belongs to the technical field of aerospace mechanism service life evaluation. According to the technical scheme, firstly, a five-stress wear rate data set containing the rotating speed, the torque, the temperature alternating, the vacuum degree and the microgravity is established; then constructing a tooth surface solid lubricating film thickness evolution model based on a Hertz-Archard coupling model, and taking the film thickness approaching to zero as a failure criterion; acceleration factors under each acceleration working condition are calculated through model iteration, and a gear acceleration life test is carried out under an optimized working condition; after the test, the film thickness is measured and compared with model prediction, the rated working condition life of the gear is reversely deduced, the long-time on-orbit life of the gear is equivalently predicted through the short-time ground test, and high acceleration efficiency and reliability are achieved. The technical problems of environmental simulation distortion and low acceleration efficiency in aerospace lubrication gear service life evaluation are solved.

The invention provides a plastic pipe service life test method and device, and the method comprises the steps: filling a low-level water tank and a circulation test pipeline communicated with the low-level water tank with a test solution, injecting the test solution into a high-level water tank communicated with the low-level water tank, and enabling the interior of the high-level water tank to have a preset test solution initial volume; wherein the high-level water tank is higher than the low-level water tank by a preset height, and a gas phase space is formed at the top of the high-level water tank; charging compressed gas into the gas-phase space to enable the gas-phase space of the high-level water tank to have preset pressure so as to apply back pressure to the test solution in the low-level water tank; under the back pressure condition, heating the test solution in the low-level water tank to a target test temperature; the backpressure condition and the target test temperature are maintained, and the service life of the plastic pipe sample in the circulation test pipeline is tested. Through the integrated structure and process design, the system is in a stable high-temperature and high-pressure test state, the energy utilization efficiency is improved, the operation cost is reduced, and the test efficiency is improved.

The invention discloses a service life prediction and reliability evaluation method for a DC-DC converter. The method comprises the following steps: carrying out consistency screening on test samples; determining the type and level of acceleration stress; screening pre-test and stress sensitive parameters; the implementation of the life test is accelerated; and constructing a life model and evaluating reliability. According to the method provided by the invention, by establishing the voltage-temperature dual-stress acceleration model, the degradation process of the device under the actual working condition is reflected more accurately; an analysis framework suitable for scenes containing failure data and non-failure data at the same time is provided, and point estimation and confidence intervals of parameters for reliability evaluation under the non-failure data condition can be provided; the method realizes accurate evaluation of the service life and reliability of the DC-DC converter before installation, has the characteristics of high prediction precision, high engineering practicability, wide application range and the like, can be widely applied to the field of reliability evaluation of various DC-DC converters, and provides data support for installation type selection, maintenance strategy formulation and system reliability design of devices.

The invention relates to an active oxygen concentration control method and a brain-computer interface implant accelerated life test system. The accelerated life test system is used for testing the electrochemical performance of a brain-computer interface implant by using a test solution. The method comprises the following steps: detecting a current feedback current corresponding to a current test solution; obtaining the current active oxygen concentration according to the current feedback current and a preset active oxygen concentration and current relation function; generating a filling parameter according to a concentration difference value between the current active oxygen concentration and a preset active oxygen concentration; and adding a hydrogen peroxide solution into the current test solution according to the filling parameters, so that the current test solution reaches the preset active oxygen concentration. According to the method, the active oxygen environment generated by immune reaction in a living body can be simulated through the test solution, the active oxygen concentration in the test solution can be precisely regulated and controlled, and the accuracy of the test result of the brain-computer interface implant is improved.

The invention provides a reliability evaluation method and device based on highly accelerated life test fault data in order to solve the problems that the reliability of existing highly accelerated life test fault data lacks an effective quantitative evaluation means and the evaluation precision is insufficient due to limited fault data. The method comprises the following steps: converting fault data in a step stress test into equivalent fault data under a normal stress condition according to an acceleration factor and time reduction principle; based on a Bayesian theory and a self-service sampling method, constructing a single-parameter reliability evaluation model; and constructing a multi-parameter reliability evaluation model by adopting an entropy-distance fusion algorithm, and carrying out comprehensive evaluation on the reliability of the test complete machine. According to the method, the time reduction principle and the Bayesian theory are combined, reliability quantitative evaluation under the stepping stress condition is achieved, the evaluation precision is improved, compared with performance degradation data, the method has wider applicability, and the actual evaluation requirement can be better met.

The invention discloses a connector plugging service life test device and method, and relates to the technical field of connector test.The device comprises a base box, a support frame is installed at the upper end of the base box, first openings are formed in the two opposite side walls of the support frame, an upper computer is installed at the upper end of the support frame, and the upper end of the upper computer is provided with a second opening. The upper computer is provided with a connector connected with the male head and the female head of the connector through connecting wires, a movable frame is arranged in the support frame, and a second opening corresponding to the first opening is formed in the movable frame. According to the invention, third electric push rods are arranged at the top and the bottom of the movable frame, and then the third electric push rods push the connector on a second rubber clamping block to slightly shift, so that the connector can be clamped and fixed, and the connector can be clamped and fixed. Therefore, actual plugging conditions of people are simulated, actual operation is closer, and the precision of the connector plugging test is improved.

The utility model relates to the technical field of endurance life test of harmonic reducers, in particular to endurance life test equipment for harmonic reducers. The endurance life experiment equipment for the harmonic reducer comprises a workbench, a first moving carrier, a second moving carrier, a fixed carrier, a load device and a torque input mechanism, the first moving carrier, the second moving carrier and the fixed carrier are sequentially arranged at the upper end of the workbench at intervals, the torque input mechanism is installed on the first moving carrier, and the load device is installed on the first moving carrier. The second mobile carrier is used for installing a harmonic reducer to be detected, the load device is installed on the fixed carrier, the shaft end of an output shaft of the torque input mechanism is provided with the first torque detection device and is connected with an input shaft of the harmonic reducer through the first torque detection device, and an input shaft of the load device is used for being connected with an output shaft of the harmonic reducer. The device has the advantages of reasonable structural design, high test efficiency, stable and reliable test process and relatively low use cost.

The application provides a lithium ion battery life prediction method, device, equipment, medium and program product. Cycle life tests are respectively performed on sample lithium ion batteries under different test temperatures and different charge rates, and cycle numbers and corresponding capacity retention rates are obtained. Different cycle life prediction models are obtained through function fitting according to the cycle numbers and corresponding capacity retention rates obtained under different test temperatures and different charge rates. A cycle life prediction model applicable to a lithium ion battery to be tested is determined according to the test temperature and the charge rate of the lithium ion battery to be tested. The cycle life prediction model is determined, and the cycle number of the lithium ion battery to be tested is used to predict the life of the lithium ion battery. The battery capacity retention rate is quickly and accurately obtained, which has guiding significance for optimizing long-term cycle conditions of the battery and prolonging the endurance life of the battery.

The utility model discloses a shower head function conversion service life testing device, and relates to the technical field of shower head quality testing. The shower head function conversion service life testing device comprises a testing table, two fixing plates are oppositely fixed to the top of the testing table, a reciprocating lead screw is arranged between the two fixing plates, a T-shaped block is arranged on the reciprocating lead screw in a threaded mode, a rack is fixed to the top end of the T-shaped block, a vertical plate is fixed to the side, away from a shower head connector, of the top of the testing table, and a rotating rod is rotationally arranged on the vertical plate. A gear is arranged on the rotating rod, the gear is meshed with the rack, an adjusting assembly is arranged on the rotating rod, a connecting rope is connected to the adjusting assembly, a clamping piece is connected to the movable end of the connecting rope, a function conversion shifting block of a tested shower head can be clamped conveniently, and meanwhile the function conversion shifting block can be clamped by combining the meshing effect of the rack and the gear under the threaded fit of the T-shaped block and the reciprocating lead screw. And the clamping piece can be conveniently adjusted to do arc reciprocating motion, so that the function conversion shifting block of the shower head can be shifted in a reciprocating manner, and the stable development of the test operation is ensured.

This invention relates to the field of disconnector switch testing technology, and in particular to a disconnector switch mechanical life testing device, comprising a frame, a drive assembly, a counting assembly, and an environmental maintenance assembly. The frame is fixed to the ground and has at least one test station, on which the disconnector switch to be tested is fixedly installed. The drive assembly includes a drive module mounted on the frame, which is drivenly connected to a reversing module mounted on the frame. The reversing module is drivenly connected to a reciprocating test rod, which drives the moving contact of the disconnector switch to open and close repeatedly. The counting assembly is fixedly mounted on the frame and correspondingly positioned to the moving contact, used to count the number of times the moving contact has opened and closed. The environmental maintenance assembly is mounted on the frame and used to maintain the stability of the test environment. This invention has a compact structure and flexible operation, achieving efficient, automatic, stable, and environmentally controllable mechanical life testing of disconnectors through high structural integration.

The invention relates to the technical field of bearing test devices, in particular to a bearing precision life test device and method, and the device comprises a housing, one side of the housing is rotatably provided with a driving shaft, the driving shaft penetrates through the housing and is in transmission connection with a mandrel, one side of the mandrel is fixedly connected with a sleeve, and the inner side of the sleeve is in sliding clamping connection with a bearing to be tested. A bearing clamping mechanism is movably installed between the fixed spring seat and the sleeve, a pressure frame is movably installed on the outer side of the stress bearing cover, a transition frame is fixedly installed on the outer side of the pressure frame, and an axial loading mechanism is fixedly installed between the transition frame and the stress bearing cover. Precision monitoring mechanisms are fixedly installed on the opposite outer sides of the pressure frames. According to the scheme, core data such as radial run-out, axial load and temperature are collected in real time through multi-dimensional monitoring assemblies such as a non-contact eddy current displacement sensor and a pressure sensor, and the precision decline amount can be accurately quantified by combining radial run-out index comparison before and after the test.

The present invention discloses a detection device for the mechanical property fatigue life test of a bellows part, belonging to the technical field of bellows mechanical property test detection. It includes a mold mechanism, a driving mechanism, and a counting mechanism; the detection device forms two sets of independent detection units; it also includes a fixed plate and a workbench surface, and two sets of guiding components are arranged between the fixed plate and the workbench surface, and the guiding components are respectively slidably connected with movable plates; the driving mechanism is in transmission connection with the movable plates, and is used to drive the corresponding movable plates to make reciprocating up and down movements along the guiding components; the fixed plate and the movable plates are both provided with coaxially corresponding station card slots, and the mold mechanism is installed in the station card slots; the counting mechanism is linked with the driving mechanism, and is used to collect the reciprocating movement signals of the movable plates and record the total number of expansion and contraction movement cycles of the bellows. The present invention can improve the detection efficiency, realize the clamping and detection of bellows of different specifications, the detection data is more in line with the actual use state, and has certain adaptability and reliability.

The utility model relates to the field of push rod motor test, put forward a kind of push rod motor life test equipment, including base, the top of base is fixedly connected with support, the top of base is fixedly connected with recessed plate, the inner wall bottom top of recessed plate is fixedly connected with spring, the utility model drives first clamping plate, second clamping plate, third clamping plate, fourth clamping plate, threaded rod, threaded block, fixed plate, limit rod, connecting plate, recessed block etc. Assembly mutual cooperation by the driving force of motor, realizes the motor that starts to penetrate in hollow plate positive side, to drive the threaded rod rotation fixed in output shaft, threaded rod rotation drives the linear motion of threaded block in the circumference of limit rod in the circumference, in the detection process to push rod motor, prevent push rod motor from happening to shake, avoid the damage to staff and detection equipment, and simultaneously can detect multi-rod push rod motor.

The application discloses an arc extinguishing system, an independent three-phase switch and an electric life prediction method thereof. The arc extinguishing system adopts an innovative double arc extinguishing chamber structure, including a second arc extinguishing chamber arranged in a static contact head arranging space and a first arc extinguishing chamber fixed through a fixed frame, forming a hierarchical arc extinguishing mechanism. Based on the structure, the application also proposes a corresponding electric life prediction method. Through constructing a comprehensive prediction model including a first arc extinguishing chamber degradation sub-model, a second arc extinguishing chamber degradation sub-model and a synergistic effect model, using an accelerated life test platform to collect multi-source characteristic parameters, using a machine learning algorithm to learn the parameter degradation trajectory, and finally outputting the quantitative prediction of the remaining electric life. The method introduces non-invasive online monitoring, environmental correction, confidence interval evaluation and digital twin technology, realizes the transformation from "periodic maintenance" to "accurate predictive maintenance", significantly improves the prediction accuracy and operation and maintenance efficiency, and provides a reliable guarantee for the safe and stable operation of the power system.

The application discloses a kind of multi-mode multi-dangerous point's acceleration task test flight spectrum compilation method and system considering, belong to aero-engine acceleration task test flight spectrum technical field, comprising: the stress and temperature distribution of acquisition component under different load, working condition;Select the key characteristics of multiple component operation Check point as potential dangerous point for analysis;The fatigue and creep damage of each check point selected is calculated and evaluated respectively;Statistical analysis of the speed change rate distribution characteristics in long-term life test flight spectrum, determine the slow car state to maximum state switching rate;Compare the damage values of different failure modes of each check point;The multi-mode multi-dangerous point's acceleration task test flight spectrum compilation method and system considering, it is suitable for most military or civilian aero-engine acceleration task test flight spectrum compilation, can accurately reflect the damage state of component in actual service process, provides strong support for the optimization of acceleration task test flight spectrum.

The application is a multi-stage prediction method for contactor electrical life based on clustering analysis and time sequence network, comprising: performing AC contactor life test, and obtaining key features through feature importance and correlation analysis screening; taking the key features of single action of the contactor as a feature mode, and constructing a contact wear factor based on mode similarity measurement; performing fuzzy C-means clustering on the contact wear factor, dividing the contactor life test process into multiple degradation stages, taking the divided degradation stages as training labels, and taking the key features as inputs to train the degradation stage online evaluation model; taking the key features of each degradation stage and the corresponding residual life to form a stage data set, training a parallel time sequence network, and obtaining a residual life prediction model of each stage to predict the residual life of the contactor. The characteristics of the multi-stage performance degradation process of the contactor and the problem of the relatively one-sided feature extraction of a single model are comprehensively considered, and the accuracy of the life prediction is improved.

The invention discloses a method for evaluating the low-temperature fatigue performance of an asphalt mixture, belongs to the technical field of road engineering, and aims to solve the technical problem of how to more accurately and comprehensively evaluate the fatigue performance of the asphalt mixture in a low-temperature environment. According to the technical scheme, the method comprises the following steps: preparing a prismoid test piece and a beam test piece made of the same asphalt mixture as the prismoid test piece; acquiring a temperature change sequence of the pavement structure in the target test environment for a plurality of continuous hours through temperature acquisition equipment; taking the collected temperature change sequence as an environment control condition, carrying out a constraint test piece temperature stress test on the prismoid test piece, and synchronously recording the axial force per hour in the test process; calculating the average temperature stress value in the test period according to the axial force per hour and the size of the prism test piece; the average temperature stress value serves as the initial stress level of the four-point bending fatigue life test and is pre-loaded on the beam test piece, and a plurality of different load stress levels are selected for testing.

This utility model relates to the field of solenoid valve testing technology and discloses a solenoid valve life test bench that is easy to fix. It includes a bench body, a vertical plate fixedly mounted on the upper end of the bench body, a groove formed at the upper end of the vertical plate, a movable component slidably mounted inside the groove, and a mounting groove formed at the upper end of the movable component. A test probe connected to a multimeter is mounted inside the mounting groove. A placement plate is fixedly mounted on the upper end of the bench body, and a fastening structure is provided on the upper end of the placement plate. The fastening structure includes a fastening seat fixedly mounted on the upper end of the placement plate, a fixing plate fixedly mounted on the rear side of the upper end of the fastening seat, a movable rod movably mounted inside the front end of the fastening seat, a movable plate fixedly mounted on the rear end of the movable rod, and a spring mounted on the outer wall of the movable rod. A solenoid valve body is positioned between the movable plate and the fixing plate. This utility model discloses a solenoid valve life test bench that is easy to fix, which can speed up the fastening of the solenoid valve and accelerate the energization test of the solenoid valve.

The invention relates to the technical field of fitness equipment testing equipment, and particularly discloses an abdominal wheel service life testing device which comprises a base frame, a transmission mechanism, a sliding mechanism, a pressing mechanism, a fixing mechanism and a counting display module. The transmission mechanism is used for driving the sliding mechanism to reciprocate in the length direction of the linear guide rail, the pressing mechanism is arranged on the sliding mechanism and comprises a pressure driving part and a pressing plate, and the pressure driving part is arranged on the sliding mechanism to drive the pressing plate to apply pressure to the fixing mechanism. The fixing mechanism is arranged on the lower pressing plate and used for fixing an abdominal wheel to be tested, the counting display module comprises a displacement sensor and a display screen, the displacement sensor is arranged on the sliding mechanism and used for collecting displacement data of the sliding mechanism in real time and converting the displacement data into the number of round-trip times and the moving distance, and the display screen is arranged on the base frame and used for displaying the displacement data. The method has the effect of improving the test accuracy of the service life of the power roller.

An evaluation method for the service life of a lubricating grease used for sliding friction pairs in high and low temperature environments, comprising the following steps: a first-stage test: adjusting a lubricating grease at a set temperature and operating same under a rated load to obtain first-stage test data, and, on the basis of the first-stage test data, determining whether the lubricating grease passes the first-stage test; and if the first-stage test is passed, further performing a second-stage test on the lubricating grease on the basis of the first-stage test: operating the lubricating grease under a load above the rated load to obtain second-stage test data, and determine the service life class of the lubricating grease on the basis of the second-stage test data. The evaluation method is used for testing the service life of a lubricating grease used for sliding friction pairs, can quickly test and accurately evaluate the service life of the lubricating grease used for sliding friction pairs, and also can be used in both high and low temperature environments, thereby expanding the application range for the service life evaluation method of lubricating greases.

The invention is suitable for the technical field of data identification, and provides a service life test method and device for a wireless charger, and the method comprises the steps: executing a test process at a preset test temperature, and collecting observation data corresponding to a plurality of sampling moments; wherein the preset test temperature is higher than normal temperature; calculating a health index corresponding to each sampling moment according to the observation data corresponding to each sampling moment; fitting the plurality of sampling moments and the health indexes corresponding to the plurality of sampling moments based on a plurality of degradation track models to obtain a target fitting model; and calculating the service life of the wireless charger according to the target fitting model. Through systematic data acquisition, dynamic evaluation of health indexes, scientific degradation model fitting and reliable life prediction, the accuracy and effectiveness of life evaluation of the wireless charger are significantly improved.

The invention provides a hypoid gear accelerated life test method, device and equipment and a storage medium, and the method comprises the steps: calculating a basic acceleration factor based on the design life and accelerated life of a hypoid gear; calculating an included angle factor and a roughness correction factor based on meshing angle information and tooth surface roughness information of the hypoid gear; revising the basic acceleration factor based on the included angle factor and the roughness correction factor to obtain a corrected acceleration factor; and according to the corrected acceleration factor and the loading mode of the test bench, calculating an actual torque and an actual rotating speed applied by the accelerated life test, and carrying out the accelerated life test on the hyperboloid gear based on the actual torque and the actual rotating speed. According to the method, the effective accelerated life test can be completed under the condition that the gear is not damaged.

The invention discloses an impact type rock breaking tool performance testing device and a design method. The device comprises a force measuring component and a pressure bearing spring. The pressure-bearing spring is fixed between the bottom plate and the top plate; the top plate is covered with a loading plate. The force measuring component comprises a force measuring component upper plate and a force measuring component lower plate. The force sensor is fixed between the force measuring component upper plate and the force measuring component lower plate; the force measuring component lower plate is fixed above the loading plate; an inner side panel of the high-damping rubber energy dissipation part is connected with the loading plate; the method comprises the following steps: establishing a testing device-foundation-site soil body integral three-dimensional finite element model through stress characteristics of parts, and determining design parameters of a loading plate, a pressure-bearing spring and a rubber energy dissipation part through numerical analysis; the problems of huge fund and time cost, high underground fault risk, low test efficiency and the like existing in the performance and service life test of the impact rock breaking tool in the prior art are solved.

The utility model relates to machine parts testing technical field, concretely relates to an insulating pull rod testing device. The insulating pull rod testing device includes the test platform, and the test platform is installed with the pull rod support frame, load mechanism and drive mechanism, and the pull rod support frame is equipped with the guide channel for with the both ends of insulating pull rod guide cooperation, and the drive mechanism is used for with the one end transmission connection of insulating pull rod and drives insulating pull rod to move in the guide channel along its axial direction, and the load mechanism is used for with the other end transmission connection of insulating pull rod and cooperates drive mechanism to make insulating pull rod move when bears axial load. Simulate the stress state of actual insulating pull rod in actual high -voltage switch, reach the purpose of testing insulating pull rod axial bearing capacity, do not have to with the dismounting of other components or parts of switch, can improve the test efficiency of insulating pull rod mechanical strength, do not influence the life test of high -voltage switch.

The invention relates to the field of rail transit, in particular to an accelerated test method for the abrasion life of a material for a high-speed rail braking system. Acceleration test equipment used in the method comprises a rotating main shaft, a rotating disc, a precise loading and feeding device, an environmental atmosphere control system, an infrared temperature measuring device, a data acquisition system and a computer, an equivalent dynamic energy dissipation method is adopted, and the braking energy density and dynamic energy dissipation of a 1: 1 braking test bed are determined; and calculating test parameters for acceleration test equipment, namely test speed, load and single energy dissipation, and realizing the acceleration test on the wear life of the to-be-tested high-speed rail brake material by adjusting the total dynamic energy dissipation amount of the test. Acceleration test equipment and an equivalent energy dissipation test method are adopted, the problems that in the prior art, the sliding linear speed of a friction pair is insufficient, the loading and environment atmosphere are inconsistent with the actual working condition, and the brake lining material abrasion life evaluation period is long are solved, and the time needed by a life test can be effectively shortened.

The invention discloses a method for testing the service life of a high-repetition-frequency multi-pulse optical thin film, and the method comprises the steps: determining the range of the total irradiation pulse number of a damage threshold test through finding out the inflection point pulse number of which the damage threshold of a thin film element tends to be stable under high repetition frequency, and providing a basis for the acceleration of service life prediction; in the irradiation pulse number range, the relation between the damage threshold stable value and the repetition frequency is fitted, a thin film life prediction mechanism under the high repetition frequency is established, and the energy density allowed by stable operation of the element under other repetition frequencies can be obtained through calculation. The method is of great significance in improving the service life testing efficiency and accuracy of the optical element.