1150 results about "Life test" patented technology

The invention discloses a vehicle-mounted boost inductance monitoring simulation test system and a test method thereof. The vehicle-mounted boost inductance monitoring simulation test system comprises a vehicle-mounted power supply simulation module, an accelerated life test module, an environment test box, a fault early warning module and a data analysis and diagnosis module. The actual stress state of the inductor is comprehensively simulated by constructing a power supply simulation model matched with the actual working condition of the electric vehicle and combining a multi-environmental-factor coupled accelerated life test; real-time monitoring and fault early warning of inductive performance degradation are realized by adopting an acoustic emission technology; an inductance fault diagnosis knowledge base and an intelligent reasoning system are constructed by applying big data analysis and machine learning technologies. According to the system and the method provided by the invention, the inductance reliability test efficiency can be remarkably improved, the early warning of inductance degradation is realized, the accuracy and the intelligent level of fault diagnosis are improved, a solid basic guarantee is provided for safe operation of a new energy electric vehicle, and the system and the method have wide application prospects and popularization values.

The invention belongs to the field of material performance testing of mechanical structure strength, and particularly relates to an ultrasonic fatigue experiment monitoring method based on digital twinning. According to the method, on the basis of an ultrasonic fatigue testing machine platform, an ultrasonic fatigue digital twin model of a tested object is established by collecting frequency, temperature, load and other test data, and real-time online monitoring of ultrasonic fatigue and life prediction are carried out in combination with a fatigue life prediction model. Compared with a traditional test method, the method has the advantages that ultrasonic detection data and a digital twinborn model technology are combined, the fatigue life of the material is predicted and evaluated, the test efficiency is improved, the long-life test cost is reduced, and the accuracy and reliability of test data are improved.

The invention discloses an acceleration task test-run spectrum compilation method and system considering multiple modes and multiple dangerous points, and belongs to the technical field of aero-engine acceleration task test-run spectrums, and the method comprises the steps: obtaining the stress and temperature distribution conditions of parts under different loads and working conditions; selecting examination points of key characteristics in operation of a plurality of parts as potential dangerous points for analysis; fatigue and creep damage calculation and evaluation are carried out on each selected assessment point; statistical analysis is carried out on the rotating speed change rate distribution characteristics in the long-term life test run spectrum, and the switching rate from the slow state to the maximum state is determined; comparing different failure mode damage values of each assessment point; the acceleration task test-run spectrum compiling method and system considering the multiple modes and the multiple dangerous points are suitable for compiling the acceleration task test-run spectrums of most military or civil aero-engines, the damage state of parts in the actual service process can be accurately reflected, and powerful support is provided for optimization of the acceleration task test-run spectrums.

A method and system for predicting an effective remaining electrical life of a high-voltage circuit breaker. A circuit breaker electrical life test is carried out and associated data sets of single arcing times and single arcing energy are constructed; a degree of wear of a contact is replaced with accumulated arcing energy to characterize whether a circuit breaker fails; and function fitting is used to construct the relationship between the single arcing energy and the single arcing times; and on this basis, the method for predicting an effective remaining electrical life of a high-voltage circuit breaker is formed. Therefore, the rapid and accurate prediction of a remaining service life of a circuit breaker can be realized only by measuring simple data, thereby providing guarantee for the reliable operation of a power grid.

The invention discloses a life prediction method and device for an accelerated test product and electronic equipment, and the method carries out typical failure mechanism analysis based on fault data, so as to determine a key device and sensitive stress of a target product. And carrying out clustering analysis on the fault data related to the key device, and determining the failure contribution rate of each sensitive stress to the target product. And according to the failure contribution rate corresponding to each sensitive stress, carrying out a multi-stress accelerated life test of the target product. And training the neural network model by adopting test data of the multi-stress accelerated life test. The accelerated test life of a target product under the target stress condition is predicted by using the trained neural network model, life prediction of the accelerated test product is realized, the neural network model is trained by using a multi-stress accelerated life test based on fault physics, the influence of the coupling effect between environmental stresses on the product is emphasized, and the service life prediction of the accelerated test product is realized. Therefore, the model better conforms to the actual application process of the product, and the life prediction precision is improved.

The invention provides a battery state prediction method and system, computer equipment and a storage medium, and the method comprises the steps: randomly selecting a preset proportion of batteries from a target batch of batteries as a test sample set; performing current switching cycle life test on each battery sample to obtain a plurality of groups of current sudden change data comprising current time sequence data, voltage time sequence data and battery health state corresponding to the preset charge state segment point sequence; obtaining a current abrupt change point battery impedance spectrum according to the current time sequence data and the voltage time sequence data in each group of current abrupt change data, and constructing a battery state prediction model according to all the current abrupt change point battery impedance spectrums and the corresponding battery health states; and obtaining a battery state prediction value according to the obtained current mutation battery impedance spectrum of the to-be-evaluated battery and the battery state prediction model. According to the invention, the high efficiency, accuracy and operation convenience of online monitoring of the health state of the battery can be effectively improved under the low-cost condition of not additionally adding measuring equipment.

The invention provides a fatigue life testing device for fan blades, and relates to the technical field of material performance tests.The fatigue life testing device comprises a detection bin, a driving mechanism is fixedly installed at the rear end of the detection bin, the detection bin comprises a detection supporting frame, a detection air bin is transversely and rotationally installed in the detection supporting frame, and a detection sliding groove is formed in the top of the detection air bin; air vents are formed in the two sides of the detection air bin, an air inlet is fixedly formed in one of the air vents in the detection air bin, and a plurality of temperature detectors are fixedly installed at the bottom of the detection air bin. Through cooperation of the spherical swing clamp and the adjusting ring, the fatigue life of the fan blade when the fan blade is vibrated in different directions can be detected; according to the invention, the influence of different wind directions on fan blade vibration during working of the fan blade can be simulated through the detection wind bin, so that the fatigue life of the fan in different wind power environments can be detected.

The invention relates to an energy accumulator durability test method and system, and the system comprises an extreme working condition simulation module which can achieve high-voltage, wide-temperature-range and high-frequency dynamic loading; the multi-sensor monitoring network integrates a fiber bragg grating strain sensor, a three-axis acceleration sensor and an acoustic emission sensor to realize collaborative monitoring of strain, vibration and microcracks; the intelligent control and energy recovery module is combined with a fuzzy PID and reinforcement learning algorithm, a magnetorheological fluid generator and a super capacitor bank, so that the control precision and the energy utilization rate are improved; and the data analysis and life evaluation platform accurately predicts the residual life by using an improved Bayesian network model and a real-time health index calculation module. According to the test method, a loading mode is dynamically adjusted through a real-time health index, an energy recovery strategy is optimized, and life early warning is triggered. The invention breaks through the limitation of the traditional test and provides an integrated solution.

The invention provides a method and device for constructing a hydraulic pump service life prediction model. The method provided by the invention comprises the following steps: acquiring segmented life test data and continuous life test data of the hydraulic pump; performing degradation feature analysis on the segmented life test data and the continuous life test data to obtain a first fusion feature and a second fusion feature; wherein the first fusion feature is a feature corresponding to the segmented life test data, and the second fusion feature is a feature corresponding to the continuous life test data; constructing a first life prediction model according to the first fusion feature; constructing a second life prediction model according to the second fusion feature; and fusing the first life prediction model and the second life prediction model to obtain a life prediction model. According to the method and device for constructing the hydraulic pump life prediction model, the problems that degradation data of the whole life cycle of the hydraulic pump are incomplete, and the hydraulic pump life prediction model is difficult to construct can be solved.

The invention relates to the technical field of semiconductor manufacturing, and provides a method and a system for testing the service life of a power field effect transistor. The method comprises the following steps: acquiring test environment parameter information of a to-be-tested power field effect transistor in a database; the test environment parameter information comprises a plurality of environment parameter sets; for each environmental parameter set, performing an electrical performance test on the to-be-tested power field effect transistor in a test environment corresponding to the environmental parameter set to obtain electrical performance parameter information corresponding to the environmental parameter set; performing defect prediction on the to-be-tested power field effect transistor based on a preset defect prediction algorithm and the electrical performance parameter information to obtain defect prediction information; and predicting the service life of the power field effect transistor based on the defect prediction information. The method improves the accuracy of the life test result.

The application relates to the technical field of diaphragm testing, in particular to a diaphragm valve diaphragm service life testing device which comprises a box body and further comprises a first pipeline, a second pipeline, a water pump, an intermediate pipeline, a first testing part and a control part, wherein: one end of the second pipeline is in communication with the upper end of the first pipeline, and the other end of the second pipeline is in communication with the intermediate pipeline; the water pump is connected in series on the second pipeline; the first testing part comprises a testing pipeline, one end of the testing pipeline is in communication with the intermediate pipeline, the other end of the testing pipeline is located in the interior of the box body, the testing pipeline is provided with an opening, a clamping piece is arranged on the periphery of the opening, the clamping piece is used for mounting a diaphragm, a circular ring is arranged on the periphery of the clamping piece, a water-sensitive sensor is arranged in the circular ring, a driving part is arranged above the testing pipeline, the driving part is drivingly connected with a tension sensor, and a connecting rod is arranged at the bottom of the tension sensor. The diaphragm deformation life and the diaphragm rupture life can be simultaneously detected, and the comprehensiveness of diaphragm detection is improved.

The utility model discloses a temperature control water nozzle service life testing machine, and relates to the technical field of temperature control water nozzle service life detection. The temperature control water nozzle service life testing machine comprises a testing stand and a constant temperature water nozzle body, a fixing frame is fixed to the rear side of the top of the testing stand, a water supply pipe is embedded in the fixing frame, a water outlet pipe is arranged on the front side of the water supply pipe, a threaded sleeve is rotationally connected to the front end of the water outlet pipe and is in threaded fit with the constant temperature water nozzle body, and a hose is connected between the water supply pipe and the water outlet pipe. A screw rod is obliquely arranged on the inner side of the fixing frame, a movable block is arranged on the screw rod in a threaded mode, an elastic assembly is connected to the bottom of the movable block, a U-shaped frame is connected to the lower end of the elastic assembly, a pressing wheel is rotationally installed on the inner side of the U-shaped frame through a rotating shaft, and the pressing wheel is matched with a hose. By combining the elastic effect of the elastic assembly, the pressing wheel extrudes the hose, the size of the drift diameter of the hose is changed, the purpose of adjusting the water flow speed is achieved, the structure is simple, and use is convenient.

The invention relates to the technical field of spring measurement, and discloses a spring fatigue life test system and a dynamic balance evaluation method, and the system comprises a reference length acquisition module, a dynamic balance state determination module, a working condition spectrum loading module, a stress-strain response data acquisition module, a damage feature extraction module and a life evaluation module. Acquiring a reference length in a free state; step increasing preload is applied, and when it is detected that the deformation rate of the to-be-detected spring is smaller than a set threshold value, it is judged that the to-be-detected spring reaches a dynamic balance state; in a dynamic balance state, loading the to-be-tested spring based on the variable amplitude load time sequence signal, and synchronously acquiring stress-strain response data; identifying the stress characteristics of the to-be-tested spring in the load period; generating a life evaluation report based on the stress characteristics; the accuracy of the fatigue life of the spring can be improved.

The invention relates to the technical field of microswitches, and discloses a microswitch contact life test method and system, and the method comprises the steps: carrying out the contact preheating operation and resistance reference measurement of a microswitch, and obtaining a contact resistance reference value and an initial fluctuation characteristic spectrum; setting a contact degradation monitoring threshold value based on the contact resistance reference value and the initial fluctuation characteristic spectrum; placing the microswitch in a test device for loop test, and recording a contact state data set in each test period; performing weighting processing on the contact state data set according to a test period, and calculating an average resistance fluctuation metric value and a contact degradation evaluation index; and performing dual-mode contact failure detection based on the average resistance fluctuation metric value and the contact degradation evaluation index, and generating target early warning signals of resistance abrupt change type and gradual change type failure modes, thereby improving the identification capability of different types of microswitch contact failure modes, and effectively avoiding sudden faults of equipment caused by contact failure.

The utility model discloses a speed reducer service life testing device. The speed reducer service life testing device comprises a test bench, a motor flange plate used for installing a servo motor, a speed reducer installing plate used for installing a speed reducer to be tested, and a torque sensor, wherein the motor flange plate, the speed reducer installing plate and the torque sensor are arranged on the test bench from front to back. The servo motor is connected with the speed reducer through an input shaft, and the speed reducer is connected with the torque sensor through an output shaft. The experiment table is provided with a plurality of key bars, a connecting plate and a mounting plate, the supporting assembly is connected with the key bars in a matched mode through mounting grooves, and the servo motor, the speed reducer, the torque sensor and the flange shaft are coaxially mounted. A positioning key strip is arranged on the test bench, and if the specification of the detected speed reducer needs to be replaced, the coaxiality in the horizontal direction is ensured while the length distance of a transmission chain is adjusted.

The utility model discloses a running-in and service life testing device for an X-ray machine bearing, which comprises a base, a base support and a supporting assembly, one end of the base support is connected with a rotating assembly, the other end of the base support is connected with the base, a first bearing is arranged in the rotating assembly, and the rotating assembly and the base are horizontally arranged; the supporting assembly is transversely arranged at the bottom of the base relative to the rotating assembly and connected with the base. And the base can rotate around the supporting assembly.

The invention discloses a comprehensive detection system for a new energy automobile chip. The comprehensive detection system comprises a data acquisition module used for acquiring operation data of the new energy automobile chip; the signal processing module is used for converting the analog signal into a digital signal and processing the signal; the fault analysis module is used for analyzing the operation data through a machine learning algorithm and constructing high-sensitivity features strongly related to faults; the safety test module is used for carrying out HBM, CDM and EMC tests to evaluate the safety performance of the chip; the performance test module is used for evaluating the performance of the chip under set extreme conditions through a high temperature life test HTOL and an early life failure test ELFR; and the data storage and analysis module is used for storing test data. According to the scheme provided by the invention, the prediction accuracy, the measurement efficiency and the anomaly detection capability are improved according to the measured electrical variable and the measured magnetic variable, so that the performance, the safety and the reliability of the chip can be comprehensively evaluated.

The invention relates to the technical field of aero-engine turbine rotor blade fatigue life design, in particular to a multistage turbine rotor blade fatigue life analysis method and device. The method comprises the following steps: based on material fatigue performance data of turbine rotor blades and a three-dimensional finite element model of the turbine rotor blades, obtaining a target test temperature and a target test rotating speed of a multi-stage turbine rotor blade group in a low-cycle fatigue test and a stress coefficient of each assessment part of each stage of turbine rotor blades; and obtaining an actual fatigue test cycle number analysis result of each stage of turbine rotor blade based on the target test temperature and the target test rotating speed of the low cycle fatigue test of the multi-stage turbine rotor blade group and the stress coefficient of each assessment part of each stage of turbine rotor blade. According to the method, the function of carrying out fatigue life test on multiple groups of turbine rotor blades is realized, the test efficiency is effectively improved, the test period is shortened, and the economic cost is reduced.

The invention relates to the technical field of vehicle detection, in particular to an electric vehicle disc brake service life testing device and a use method thereof.In the testing process, a to-be-tested disc brake system is subjected to installation preparation before testing, specifically, a hand brake handle is installed on a brake simulation mechanism, and a brake disc and brake calipers are installed on a disc brake fixing mechanism; then starting a test process, firstly starting a power output mechanism to drive a brake disc to rotate, triggering a brake simulation mechanism and applying pressure to a hand brake handle after a set rotating speed is reached, simulating a brake effect, and setting a time length of a timer to meet the time required by one test process; and entering the next test process after the test process is determined to reach the time through the timer, and disassembling the brake disc to check whether the abrasion loss of the brake disc reaches the standard or not until the test times recorded by the counter reach the test requirements. The device not only can detect a common disc brake system, but also can detect a high-end disc brake system with an ABS function, is efficient and accurate, can improve the safety coefficient of travel, and has great popularization value.

The invention relates to the technical field of turbine blade life analysis, and discloses a single crystal turbine blade simulation piece test parameter design method and system.The critical distance is adopted to correct the dangerous position of a single crystal turbine blade high-low cycle composite fatigue simulation piece, and then resonance analysis of different orders is carried out to obtain the maximum value of the vibration stress of the dangerous position; and finally, analyzing the static stress value of the dangerous position and the maximum value of the vibration stress to obtain a high-low cycle load ratio of the dangerous film hole so as to carry out high-low cycle composite fatigue test load spectrum design of the dangerous film hole and obtain a composite fatigue test load spectrum for carrying out high-low cycle composite fatigue life test analysis on the single crystal turbine blade simulation part. The influence of the static stress gradient on the high-low cycle composite fatigue life is considered, the sensitivity of the stress gradient to the life is reduced, and the problem that the life evaluation error is large due to the fact that the evaluation is conservative by directly adopting a multi-axis fatigue model based on the stress of the stress concentration position is avoided.

The utility model discloses a device for testing the service life of a rotary joint, and relates to the technical field of joint testing devices. The rotary joint service life test device comprises a bearing plate, one side of the top of the bearing plate is fixedly provided with a mounting plate, the other side of the top of the bearing plate is movably provided with a moving plate, and one side of the mounting plate is fixedly provided with a protection mechanism for performing safety protection on a user. An electric rod is electrified to operate to drive a bolt plate to move vertically, the bolt plate moving vertically can drive a protection box to move synchronously, the protection box moves downwards to the outer side of a to-be-detected rotary joint for enclosure, and the protection box moving downwards can drive an industrial camera to move synchronously. And then the industrial camera is electrified to operate, so that the to-be-detected rotary joint can be monitored in real time, manual observation of an operator is replaced, and a function of performing safety protection on the operator can be realized through cooperative use of an electric rod and a protection box.

The invention relates to the technical field of fatigue life testing, and particularly discloses a method for testing the fatigue life of a diaphragm of a diaphragm compressor, which comprises the following steps of: measuring the material tensile strength value of each diaphragm tensile sample piece through a tensile fatigue test, and simultaneously determining the fatigue life of the diaphragm of the diaphragm compressor by combining geometric parameters of each diaphragm tensile sample piece; the method comprises the following steps of: constructing association expressions between geometric parameters of a diaphragm tensile sample piece and tensile test results, and further performing global polymerization analysis on each group of constructed association expressions, so as to intelligently estimate the sigma b value of the diaphragm material of the diaphragm compressor. Therefore, the tensile property of the diaphragm material can be evaluated more accurately, so that a more reliable basis is provided for testing the fatigue life of the diaphragm.

The invention discloses a device and a method for testing transmission efficiency and service life of a miniature lead screw pair, and belongs to the technical field of lead screw pair testing. The device comprises a control system, a base, and a first servo motor, a lead screw pair fixing mechanism, a test workbench, a loading workbench and a second servo motor which are sequentially arranged on the base; the lead screw pair fixing mechanism is used for installing a to-be-tested lead screw pair, one end of the lead screw pair fixing mechanism is connected with the first servo motor through the main shaft unit, and the other end of the lead screw pair fixing mechanism is connected with one end of the test workbench. The test workbench is slidably located on the linear guide rail pair of the base, and the other end of the test workbench is connected with one end of the loading workbench through a force sensor and a force application balance rod; the loading workbench is slidably located on the linear guide rail pair, and the other end of the loading workbench is connected with the second servo motor through the loading lead screw pair. The control system is used for controlling the first servo motor and the second servo motor. The problems of installation of the miniature lead screw pair and testing in a high-speed state are solved.

The invention relates to the technical field of corrugated pipe testing tools, and particularly discloses a corrugated pipe fatigue life testing tool which is characterized in that two sets of testing mechanisms are mounted on a machine body, and each set of testing mechanism comprises a base plate, a top plate, a driving rod and a sealing cover; a first connecting base and a second connecting base are fixed to the bottom disc and the top disc respectively, and the top disc is provided with an air suction hole and connected with an air exhaust hose. The driving rod vertically penetrates through the chassis and is fixedly provided with a third connecting seat; the sealing cover can be in sealed butt joint with the chassis, and a penetrating connector for communicating the air exhaust hose with the vacuum generation system is fixed to the side wall. The two driving rods are in transmission connection through a synchronizing piece, and in the reciprocating movement process, when one corrugated pipe stretches, the other corrugated pipe shrinks. The test tool can be used for testing the corrugated pipe under normal pressure, external vacuum and internal vacuum environments, is suitable for welding the corrugated pipe and ensures the accuracy of test data; the test efficiency is obviously improved, the work is stable, the energy consumption is low, and the test cost is greatly saved; the structure is simple, manufacturing is easy, and the implementation cost is low.

The invention provides a carbon ring sealing life test device and method, and the device comprises a gas supply assembly, an air pressure stabilizing assembly, a gas drying assembly, a gas regulation and control assembly, a fixed bearing assembly, a movable matching assembly, a power driving assembly, and a sealing measurement assembly. The test device integrates a plurality of components such as gas supply, stable air pressure, gas drying, gas regulation and control, fixed bearing, movable matching and connection, power driving and rotation, sealing measurement and the like to form a complete test system, so that the test process is smoother, the uncertainty and errors in the test are reduced, the sealing performance of the carbon ring can be tested, and the test efficiency is improved. Different working conditions can be simulated, so that the sealing performance and the service life of the carbon ring under different conditions can be comprehensively evaluated, the performance characteristics of the carbon ring can be known more accurately, powerful support is provided for design and improvement of products, and by adjusting parameters and configuration of each component, the sealing performance and the service life of the carbon ring can be accurately evaluated. The sealing performance and the service life of different carbon rings can be accurately tested.

The invention relates to the technical field of accelerated life tests of electronic equipment, and discloses a method for determining an acceleration factor of electronic equipment in order to solve the problem that the accuracy of the acceleration factor in a reliability accelerated life test scheme is not high. The method comprises the steps that the environment temperature of the electronic equipment under the normal working condition and the environment temperature of the electronic equipment under the acceleration test condition are acquired; determining the type number of the components in the electronic equipment, the number of the components of the same type and the activation energy of each component; determining a first acceleration factor of the electronic equipment; determining a second acceleration factor of the electronic equipment; based on a scoring result obtained by scoring the first acceleration factor and the second acceleration factor through an expert scoring method, a target acceleration factor is determined, and the target acceleration factor is used for carrying out an accelerated life test of the electronic equipment. By adopting the method, the accuracy of the acceleration factor of the electronic equipment in the reliability accelerated life test can be improved.

The invention relates to the technical field of service life testing equipment, in particular to welded corrugated pipe lateral deviation testing equipment which comprises a testing platform, a vertical mounting vertical plate and a transverse displacement mechanism are fixedly arranged on the left side and the right side of the upper surface of the testing platform respectively, and a longitudinal displacement mechanism is fixedly arranged on the right side of the vertical mounting vertical plate. Displacement plates are fixedly arranged on the right surface of the displacement end of the longitudinal displacement mechanism and the upper surface of the displacement end of the transverse displacement mechanism, mounting frames are fixedly arranged on the displacement plates, mounting plates are fixedly arranged on the mounting frames, and the opposite side faces of the two mounting plates are connected with the left end and the right end of a corrugated pipe correspondingly; and a locking mechanism for pressing the corrugated pipe flange is fixedly arranged on the mounting plate. Through cooperation of the longitudinal displacement mechanism and the transverse displacement mechanism, accurate displacement adjustment of the corrugated pipe in different directions can be achieved, the test accuracy is ensured, the situation that original equipment can only do axial reciprocating motion is broken through, and a lateral deviation test of the corrugated pipe is achieved.

The invention discloses a device and a method for testing the service life of a welding spot under a thermal-electric-vibration coupling load. The device comprises a thermal cycle device, a vibration device, a computer, a data acquisition instrument and a direct-current power supply. The thermal circulation device is fixed above a vibration table of the vibration device, threaded holes are formed in the vibration table, a circuit board can be fixed on the vibration table through screws, and thermal vibration coupling loading is achieved; a stable power supply is provided for welding spots on a circuit board through a direct-current power supply, so that heat-electricity-vibration coupling loading is realized; the welding spots are connected through the daisy chain, the resistance value of the welding spots is obtained through the data acquisition instrument, the computer is used for monitoring the resistance value, and an alarm value can be set, so that the service life of the welding spots is tested.

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 utility model relates to an offshore wind turbine blade accelerated life test bench, which comprises a base, an environment cover is buckled on the upper side of the rear part of the base, a test chamber is formed in the environment cover, and a wind turbine module is arranged in the test chamber; an air inlet is formed in the front side of the environment cover and connected with the outlet end of the air blower through an air pipe. An air outlet is formed in the rear side of the environment cover, and a filter screen is arranged at the air outlet; a sand container is arranged above the air pipe, and a feed opening of the sand container is communicated with the air pipe. The accelerated life test bed for the offshore wind turbine blade is easy to implement, convenient to operate and high in practicability, can perform accelerated life degradation test on the wind turbine blade under the simulated severe offshore environment, and ensures that the test result is close to actual working condition data; therefore, the fatigue and corrosion conditions of the blade of the offshore wind turbine in the severe marine environment can be accurately and reliably analyzed, and a reliable test basis is provided for improving the intelligent operation and maintenance level of the offshore wind turbine.