Patents
Literature

89results about How to "Shorten the test cycle" patented technology

Load spectrum simplification method for aircraft construction crack extension test

The invention discloses a load spectrum simplification method for an aircraft construction crack extension test. The load spectrum simplification method comprises the following steps: (1) determining the structural type of a crack extension test piece and a material containing a crack part, and determining the fatigue crack extension threshold value deltaKth of the material; (2) determining a stress intensity factor of a crack tip of the material; (3) estimating the crack length in the crack extension test and processing in a segmenting manner; (4) deleting the stress cycle lower than the fatigue crack extension threshold value in a load spectrum according to the segmentation condition to form a load spectrum corresponding to the lengths of the segments of the crack, and finally applying the load spectrum in the crack extension test. The load spectrum simplification method disclosed by the invention is used for determining the cark tip stress intensity factor value of a crack-containing structure and simplifying the load spectrum for the crack extension test in the segmenting manner in combination with the fatigue crack extension threshold value deltaKth of the material, so that the load spectrum can be directly applied in the aircraft construction crack extension test, and the method is simple and feasible and is capable of effectively shortening the test period.
Owner:CHINA AIRPLANT STRENGTH RES INST

Friction load coupling experimental device and friction load coupling experimental method in marine climate environment

The invention discloses a friction load coupling experimental device and a friction load coupling experimental method in a marine climate environment. The experimental device comprises an electric control part, a mechanical part and a constant temperature and humidity maintaining system, wherein the electric control part comprises a motor servo control and data collection system; the mechanical part comprises an upper main shaft driving assembly, a lower sample motion assembly, a lower main shaft pressure and torque measuring assembly, a spring loading assembly and a special friction pair fixture assembly; the constant temperature and humidity maintaining system mainly consists of an industrial air conditioner and a case. According to the experimental device and the experimental method, the corrosion and wear resistance of materials or coating materials in wet and hot marine atmosphere environment can be truly represented; accurate and reliable experimental evidences can be provided for design and material selection of devices and machines used in the marine climate environment, so as to improve the performances of the devices and the machines and prolong the service lives of the devices and the machine.
Owner:UNIV OF SCI & TECH BEIJING +1

Simulated large-field soil and solute transporting system

The invention relates to a large-field soil and solute transporting system and discloses a simulated system for researching leaching, migration and transformation conditions of solutes in the soil under a field irrigation condition. The system comprises a soil groove, a water supply system, a sampling system, a data collecting system and a leaching solution collecting system, wherein the inner wall and the bottom part of the soil tank are provided with waterproof layers and the soil is filled into the soil tank; the water supply system is used for supplying water to the soil tank; the sampling system is used for sampling a solution contained in the soil of the soil tank; the data collecting system is used for monitoring the water content in the soil with the different depths in the soil tank at regular time; and the leaching solution collecting system is used for collecting a leaching solution at the bottom of the soil tank. The system disclosed by the invention can be used for monitoring the leaching, migration and transformation conditions of the solutes in the soil under the field irrigation condition one by one, so that the test period is shortened, the boundary effect is reduced and the test precision is improved; and furthermore, the problems that the indoor evaporation amount is small and does not accord with field conditions are solved by using an evaporation system.
Owner:CHINA AGRI UNIV

Aging test device and method of integrated circuit chip on the basis of daughter boards and mother board

The invention relates to an ageing test device and method of an integrated circuit chip on the basis of daughter boards and a mother board. The device comprises a universal ageing mother board and a plurality of ageing daughter boards, wherein the universal ageing mother board is provided with a plurality of stations, and the stations are provided with a plurality of spring needles arranged in an array; the ageing daughter boards can be installed on one station of the universal ageing mother board; the front side of each ageing daughter board is provided with a chip installation part and is integrated with a peripheral application circuit; the back side of each ageing daughter board is provided with a plurality of metal contacts arranged in an array, wherein one part of the plurality of metal contacts is connected with the pin of a chip to be tested, and the other part is connected with the peripheral application circuit; a contact pin on each station is matched and is in contact with each metal contact on the back side of each ageing daughter board so as to connect the ageing daughter boards into the general ageing mother board. The invention also provides the test method. The ageing test device and method can be suitable for various types of integrated circuit chips to carry out ageing experiments and aged performance tests, test cost is effectively saved, and a test period is shortened.
Owner:上海鑫匀源科技有限公司

Automatic hardware testing method and automatic hardware testing system

ActiveCN102955723AShorten the test cycleRealize automatic downloadDetecting faulty computer hardwareTest managementTest program
The invention discloses an automatic hardware testing method and an automatic hardware testing system. The method includes: after a testing management software running instruction transmitted by a user is received, running testing management software; after a testing program executing instruction is received, reading codes corresponding to the testing program to execute the testing program, wherein the testing program of tested hardware is developed in the testing management software; automatically running download software during testing program execution; using a simulating key for operating and controlling the download software so that the download software controls a downloader to execute a preselected downloader executing instruction, and download of a drive program is completed; and using the downloaded drive program to complete automatic testing of the tested hardware. Compared with the prior art, the automatic hardware testing method has the advantages that when faced with a great variety of small-batch tested hardware, the method can complete automatic testing of the tested hardware without developing multiple sets of download software, and accordingly development cost is extremely low, and the testing cycle of the batched tested hardware is shortened.
Owner:INST OF MICROELECTRONICS CHINESE ACAD OF SCI

Automatic identification algorithm index test method, storage medium and electronic terminal

The invention provides an automatic identification algorithm index test method, a storage medium and an electronic terminal. The method comprises the steps of collecting a test sequence set of algorithm indexes; marking the test sequence set, establishing a table structure according to the marked test sequence set, obtaining index test parameters required for executing a test by a measured algorithm, inputting the test sequence set into the measured algorithm, executing the test and obtaining an algorithm result; comparing the algorithm result with a table structure to obtain an algorithm index test result; according to the invention, the algorithm can be tested; an index comparison result is rapidly and accurately output; test period can be shortened, the method is advantaged in that requirements of rapid algorithm optimization and algorithm index improvement are satisfied, situations of limited algorithm application scenes and the like caused by insufficient consideration of influence factors during acquisition of the test case set are avoided, test efficiency is improved, and result errors caused by large data volume of the identified object and the identification attribute in the test set in the manual proofreading process are avoided.
Owner:重庆紫光华山智安科技有限公司

Device and method for measuring critical chloride ion concentration of reinforcing steel bar depassivation in cement-based material

The invention discloses a device and a method for measuring the critical chloride ion concentration of steel bar depassivation in a cement-based material. The device comprises a to-be-tested piece, achloride ion electromigration device and an electrochemical testing device. The method comprises the steps of chloride ion electromigration cycle test, corrosion current density characteristic parameter measurement and steel bar electrode test surface depassivation quantitative judgement criterion. The chloride ion electromigration cycle test is carried out by utilizing the chloride ion electromigration device, corrosion current density characteristic parameters are measured and calculated by utilizing the electrochemical testing device, and whether a testing surface of a steel bar electrode in the cement-based material is depassivated or not is judged according to the quantitative depassivation judgement criterion of the testing surface of the steel bar electrode. The transmission of chloride ions in the cement-based material can be accelerated, so the test period of the test is remarkably shortened; and whether the test surfaces of the plurality of steel bar electrodes in the to-be-tested piece are depassivated or not can be quantitatively judged at the same time, so that the critical chloride ion concentration of steel bar depassivation in the cement-based material can be rapidly and accurately determined.
Owner:GUANGXI UNIV

Durability test device for wiring harness of automobile chassis

InactiveCN107202699AShorten the test cycleReduce the difficulty of test operationVehicle testingAutomotive engineeringRolling chassis
The invention relates to the field of durability test for a wiring harness of an automobile chassis, in particular to a durability test device for a wiring harness of an automobile chassis. The durability test device comprises a seat body, a first support frame, a second support frame, a first clamp, a second clamp, a drive mechanism and a controller, wherein the first support frame and the second support frame are arranged on the seat body in parallel; the first clamp is fixed on the first support frame; a guide rail is arranged on the second support frame; the second clamp is arranged on the guide rail in a sliding manner; the drive mechanism is arranged on the seat body and is connected with the second clamp; the controller sends out a command to the drive mechanism to drive the second clamp to perform reciprocating motion along the guide rail. The durability test device for the wiring harness of the automobile chassis, provided by the embodiment of the invention, can really stimulate a working state of the wiring harness of the automobile chassis on the whole vehicle, so that the durability test of the automobile chassis is not carried out on the whole vehicle, the test period is shortened, and the test operation difficulty is reduced.
Owner:广电计量检测(武汉)有限公司 +1

Method for testing working condition of battery of electric bicycle

The invention discloses a method for testing the working condition of a battery of an electric bicycle. In order to overcome the problem that the difference between testing of an electric bicycle lithium battery and the actual working condition is large, the method comprises the steps of S1, putting a to-be-tested battery into a high-low temperature box with a preset program; S2, simulating the four-season temperature change cycle for several times by the high-low temperature box, wherein each simulation season comprises several different simulation stage temperatures; S3, carrying out a plurality of three-layer nested cycle battery charging and discharging tests at each simulation stage temperature, wherein the three-layer nested cycle comprises a multi-stage discharge cycle, a charge-discharge cycle and an overall cycle; and S4, correcting the capacity retention ratio obtained by completing the test, and evaluating the long-term use performance of the battery. The influence of environment temperature, current, charge and discharge characteristics and calendar life is fully utilized to simulate the actual working condition test, so that the performance of the battery pack under the actual working condition riding can be reflected more truly, and the test period is shortened at the same time.
Owner:浙江超恒动力科技有限公司
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products