502 results about "Accelerated aging" patented technology

The invention discloses a cable insulation life prediction method and system based on LSTM accelerated aging mapping, and relates to the technical field of submarine cable insulation life prediction. The existing method has the defects of insufficient multi-stress nonlinear modeling, laboratory and field data separation, difficulty in small sample modeling and the like, and the insulation life of the submarine cable is difficult to accurately predict. The method comprises the following steps: data acquisition: acquiring parameters of insulation electrical performance, physical and chemical performance and mechanical performance under an accelerated aging condition; carrying out data preprocessing: carrying out homodromous processing on the inverse indexes, improving box plot denoising, filling missing data with a space-time K nearest neighbor algorithm, and carrying out normalization; constructing an LSTM model: embedding a dielectric constant differential equation as a physical constraint, and introducing an index weight; and model training and evaluation: adopting five-fold cross validation, and quantizing prediction precision through mean square errors and decision coefficients. According to the technical scheme, the prediction precision is improved, the fault risk caused by insulation aging is reduced, the maintenance cost is reduced, and the reliability of the ocean energy transmission system is improved.

The invention discloses a submarine cable insulation multi-field aging prediction method and system, and relates to the technical field of material science and engineering. An existing model has the problems that parameter interaction effect analysis is insufficient, feature weight distribution is not scientific, a data standardization method is insufficient, and the capacity of capturing dynamic response and nonlinear aging behaviors is weak. The method comprises the steps of multi-physics field accelerated aging experiment design and data acquisition, key characteristic parameter screening through grey correlation analysis, support vector machine modeling and optimization, dynamic aging behavior evaluation and service life prediction and feedback adjustment. According to the technical scheme, aging behaviors are comprehensively captured through a multi-physics field cooperation experiment, key parameters are scientifically screened in combination with grey correlation analysis, a nonlinear relation is optimized through support vector machine modeling, long-term prediction precision is improved through dynamic feedback adjustment, and reliability is enhanced through quantitative life evaluation; the aging characteristics of the submarine cable insulating material in multiple physical fields are comprehensively and accurately reflected, and a scientific basis is provided for multi-dimensional evaluation of the aging performance of a high polymer material.

The invention relates to an aging test method and device and a medium, and relates to the technical field of aging tests.The method comprises the steps that based on a distributed data acquisition system architecture, performance parameters of a to-be-tested product are synchronously acquired at a plurality of test points, data acquired at all the test points are synchronously integrated through timestamp alignment, and integrated data are obtained; based on a preset data analysis model, performing time sequence analysis on the continuously collected performance parameters, fitting a performance degradation curve by using a regression analysis method, determining a degradation function, and predicting the performance failure time of the to-be-tested product according to the degradation function; and determining a plurality of accelerated aging test schemes based on the performance failure time and a combination of a plurality of environmental factors, and executing all the accelerated aging test schemes through a simulator to obtain a plurality of life prediction results. The effect of improving the accuracy of performance evaluation and life prediction of the electronic product is achieved.

The invention provides a high polymer material performance prediction method based on deep learning, and relates to the technical field of material performance prediction.The method comprises the specific steps that variable parameters influencing high polymer material performance are determined, multiple sets of samples are prepared and subjected to a tensile test and an accelerated aging test, and initial and final tensile performance parameters are obtained; and constructing and training an initial performance prediction model and an aging performance prediction model based on a deep learning network model, inputting related parameters into the models to obtain performance parameters, generating an environment severe coefficient through data processing, calculating a performance evaluation index in combination with a tensile performance parameter variation, and comparing the performance evaluation index with a preset threshold value to evaluate the material performance. According to the method, the performance change of the aged material can be accurately predicted, the performance evolution can be reflected, the prediction result is closer to reality, the material performance can be comprehensively evaluated, and an effective reference and a scientific basis are provided for long-term use, selection and application of the material.

The invention relates to the technical field of semiconductor photoelectronics, and discloses a multi-physics field coupling silicon-based optical interconnection chip degradation model construction method and application, and the method comprises the steps: firstly constructing a multi-physics field coupling analysis model, and quantitatively representing the coupling relation of thermodynamics, optics, electricity and material aging through an inter-field coupling equation and a material aging dynamic model; simulating field distribution of a chip key area under multi-environment stress through finite element analysis, and extracting data; then historical degradation data is collected by combining an accelerated aging test and long-term operation monitoring, and a degradation parameter prediction model is established after data processing based on machine learning; and finally, inputting a finite element result and a prediction result into a material aging dynamic model, and finally forming a multi-physics field coupling degradation model. The problems that the prior art depends on a single physical field, degradation mechanism analysis is incomplete, and service life evaluation is inaccurate are solved, and support can be provided for reliability evaluation, structure optimization and service life prediction of the silicon-based optical interconnection chip.

The invention provides a plywood weather resistance accelerated aging test device and test method, and belongs to the technical field of aging test equipment. The testing device comprises a supporting table and a testing box fixedly installed at the top of the supporting table, a rotary supporting mechanism is arranged in the testing box and used for positioning the plywood and adjusting the rotation angle of the plywood in the horizontal plane, and two waxing mechanisms are further arranged in the testing box and used for waxing the plywood in the horizontal plane. The two waxing mechanisms are used for conducting edge sealing treatment on the plywood. The testing method comprises the following steps: T2, placing the plywood on a positioning carrier plate on the rotary supporting mechanism to complete positioning; and T3, the plywood is fixed through a pressing mechanism. The plywood weatherability accelerated aging test device provided by the invention has the advantages that the plywood is automatically subjected to edge sealing and waxing, the human input can be reduced, and the reliability and integrity of wax layer coating can be improved.

The invention discloses a panel vertical seam water stop structure repair effect evaluation method, which comprises the following steps of: firstly, synchronously obtaining surface crack and internal defect data through cooperative detection of infrared thermal imaging and ultrasonic flaw detection; and carrying out space alignment on point cloud data generated by three-dimensional laser scanning and an ultrasonic detection result, and establishing a BIM model containing a crack three-dimensional form. A practical engineering environment is simulated in a laboratory to carry out material accelerated aging and test key indexes such as an elastic recovery rate, a base surface state is evaluated through a temperature and humidity sensor array in a construction stage, a six-axis grouting robot is adopted to execute accurate filling, a curing process is monitored by a synchronous pre-embedded optical fiber sensor, and after aging is simulated by combining a hydraulic test with climate, a construction period is shortened. A distributed optical fiber network is used for continuously collecting deformation data, a comprehensive evaluation model is constructed based on mechanics, durability and sealing indexes, and finally material selection and process parameters are optimized through machine learning.

The invention provides a wear resistance testing system of a high-strength guide plate, and relates to the technical field of wear resistance testing, and the wear resistance testing system comprises a simulation load module used for executing load control on a test guide plate sample by taking a load range and a wood environment as simulation conditions; the wear analysis module is used for performing wear analysis on the test guide plate sample; the model construction module is used for constructing a guide plate wear prediction model according to the simulation conditions, the accelerated aging environment and the guide plate wear data; the wear prediction module is used for performing wear prediction on the target guide plate through the guide plate wear prediction model to obtain target wear data; the wear-resistant coefficient calculation module is used for calculating a wear-resistant coefficient according to the target wear data to obtain a target wear-resistant coefficient. The guide plate wear resistance testing method can solve the technical problem of poor wear resistance testing accuracy caused by lack of comprehensive consideration of the influence of complex environmental conditions on wear in the prior art, and improves the accuracy of the guide plate wear resistance testing by simulating the actual use environment and accelerating the aging test.

The invention provides a damp heat-oxygen-internal pressure-load coupled non-metal pipeline aging device and a method capable of evaluating the service life of an in-service non-metal pipeline. The non-metal pipeline aging device comprises six parts, namely an inner cavity, a box body temperature control system, a box body humidity control system, a pipeline internal pressure control system, a pipeline external load loading device and an air supply circulating system, and an accelerated aging test of a non-metal pipeline under different working condition combinations of four factors, namely damp heat, oxygen, internal pressure and load can be carried out by virtue of the aging device. Measuring oxidation induction periods before and after aging of the in-service non-metal pipeline and the non-metal pipeline with the same mark through a differential heat scanning method, substituting the oxidation induction periods into a non-metal pipeline aging life prediction formula coupled with damp heat-oxygen-internal pressure-load factors, and calculating to obtain the service aging life. According to the method, damp heat-oxygen-internal pressure-external load multi-factor coupling is realized, so that an actual service environment is accurately simulated, and comprehensive technical support can be provided for safe operation of the non-metal pipeline.

The invention relates to the technical field of titanium dioxide, and discloses a preparation process of oil paint core-coated titanium dioxide, which comprises the following steps: a core layer is rutile type titanium dioxide particles with the particle size range of 0.1-0.5 mu m and the specific surface area of 8-15m < 2 > / g, an inorganic coating layer is composed of silicon dioxide and aluminum oxide according to the mass ratio of 1: (0.2-1.5), the coating thickness is 5-15% of the diameter of the core layer, and the inorganic coating layer is composed of silicon dioxide and aluminum oxide according to the mass ratio of 1: (0.2-1.5). Wherein the silicon dioxide is coated by a hydrolytic deposition method, the aluminum oxide is coated by a sol-gel method, the organic coating layer comprises a copolymer containing a silane coupling agent and organic silicon resin, the organic silicon resin is methyl phenyl silicon resin, the organic coating layer accounts for 1-8% of the total mass of the titanium dioxide, and the surface contact angle of the organic coating layer is greater than or equal to 110 degrees. According to the preparation process of the oil paint core-coated titanium dioxide, an inorganic-organic gradient coating system is constructed, so that the core-coated titanium dioxide has a gloss retention rate of more than 95% (ASTM D523) and a delta E color difference of less than 1.5 (ISO 7724) after 1000 hours in a QUV accelerated aging test, and the weather resistance of the core-coated titanium dioxide is improved by more than 3 times compared with that of the traditional titanium dioxide.

The invention discloses a permanent magnet synchronous motor failure monitoring method, system and equipment for a space environment, and relates to the technical field of motor fault monitoring, and the method comprises the steps: constructing a simulation space environment experiment module, carrying out the accelerated aging experiment of a permanent magnet synchronous motor, and obtaining multi-dimensional degradation data; performing material performance evaluation on the permanent magnet synchronous motor, determining a material performance degradation result, performing failure analysis, and constructing a space environment failure feature library; and monitoring a motor operation parameter set of the permanent magnet synchronous motor in real time, determining an abnormal mode, and making a failure maintenance suggestion. The technical problems that in the prior art, the failure condition of the permanent magnet synchronous motor in the space environment cannot be accurately monitored, the reliability of the motor in the space environment is poor, and the operation stability is insufficient are solved, the failure condition of the permanent magnet synchronous motor is accurately monitored, and the reliability of the motor is improved. And the reliability and the operation stability of the permanent magnet synchronous motor in a space environment are improved.

The invention belongs to the technical field of aging life evaluation of rubber sealing elements, and relates to an accelerated aging test device for a rubber sealing ring. Comprising a motor driving and torque detecting system (1), a rotating shaft system (2), a rubber sealing ring testing system (3) and a device mounting bottom plate (4), the rubber sealing ring accelerated aging test device provided by the invention is relatively simple in structural form and convenient to operate, and can be used for carrying out an accelerated aging test of the rubber sealing ring, so that the compression deformation during assembly of the rubber sealing ring can be flexibly controlled; parameters such as medium temperature, pressure, part rotating speed, torque, revolution and the like which are consistent with or higher than those of an actual sealing structure can be controlled in the test process, and the aging and failure processes of the rubber sealing ring during working in a weapon equipment structure can be effectively simulated; and the effect of improving the accuracy of aging resistance evaluation and service life prediction of the rubber sealing ring is achieved.

The invention relates to a carbon capture absorbent degradation performance evaluation method and a determination device, the method comprises the following steps: accelerating aging degradation of a to-be-detected sample under high pressure oxygen and heating conditions, simulating the oxidation process of an absorbent in long-term operation, and shortening the experimental period; in the test process, the pressure and temperature of the reaction kettle are automatically collected, a pressure-time curve is established, and the degradation resistance of the sample is comprehensively judged according to the pressure drop rate and inflection point time. The method for evaluating the degradation performance of the carbon capture absorbent can be used for rapidly and comprehensively evaluating the sample, and meanwhile, the degradation degree can be analyzed and judged without the help of high-end equipment such as cation chromatography and gas chromatography, so that the method is convenient and efficient; the method is particularly suitable for testing and optimizing the oxidation resistance of novel absorbents such as composite absorbents and phase change absorbents.

The invention discloses a sealing structure for a test, and an aging test and leakage rate detection method and system. The sealing structure comprises a tested sealing assembly and an air cavity assembly integrated in the tested sealing assembly, and serialized test samples with different filling rates and compression rates are formed by regulating and controlling the groove width and the groove depth of a sealing ring mounting groove so as to simulate various actual sealing states. An aging test adopts a multi-factor coupling accelerated aging method, and a plurality of material characterization means are combined to systematically evaluate the evolution rule of the sealing performance. According to leakage rate detection, static pressure maintaining and dynamic pressure adjusting dual-mode measurement is achieved through an air tightness detector, and the sealing characteristics under different pressure conditions are comprehensively reflected. According to the invention, direct and systematic detection of the leakage rate of the sealing structure is realized, and an innovative solution is provided for sealing performance evaluation and service life prediction of electrical equipment.

The application relates to the technical field of material testing, and relates to a high polymer material testing method and system based on image analysis, which comprises the following steps: collecting images of high polymer materials to obtain high polymer material images, performing pretreatment operations to obtain pretreated material images, identifying a defect region set in the pretreated material images, performing feature extraction on the defect regions to obtain defect region parameters, comparing the defect region parameters with defect thresholds to obtain defect deviation values, judging the defect conditions of the defect regions, confirming the high polymer materials as preliminary qualified materials if all the defect conditions are acceptable defects, performing accelerated aging tests to obtain aging test materials, performing image detection on the aging test materials to obtain detected defect regions, comparing the defect regions with the detected defect regions to obtain defect region expansion values, and obtaining material detection results. The application can solve the problem of low testing result accuracy in the current high polymer material testing process.

The invention discloses an accelerated aging test system for an intelligent electric meter in a composite environment, which relates to the field of aging test and comprises a data acquisition module, a power evaluation module, a battery evaluation module, a communication evaluation module, a fusion module and an environment-scheme matching module. The data acquisition module is used for generating a test data set, performing accelerated aging on the intelligent electric meter and acquiring aging data at the same time; the power evaluation module, the battery evaluation module and the general storage evaluation module respectively analyze the related data to obtain a power index, an electric quantity index and a general storage index; the fusion module obtains a test aging index; the environment-scheme matching module collects environment data of the target intelligent electric meter, and the environment data is matched with the test data set after being processed and converted to obtain an actual aging index of the target intelligent electric meter; compared with a traditional single stress test method, the scheme comprehensively considers multiple factors, and improves the accuracy of judging the aging degree of the intelligent electric meter.

The invention discloses a production process of a new energy automobile power battery cooling liquid with wide temperature range performance, and belongs to the technical field of battery anti-freezing solutions, and the production process specifically comprises the following steps: (1) raw material selection and pretreatment; (2) mixing reaction; (3) filtering and purifying; (4) performance detection and adjustment; and (5) packaging and storing. The cooling liquid disclosed by the invention has excellent wide temperature range performance, and can meet the use requirements of a new energy automobile power battery under an extreme temperature condition. And through verification of a long-term cycle test and an accelerated aging test, it is ensured that the performance of the cooling liquid is stable in the long-term operation process. All the raw materials are strictly treated, and the additive is selected from a high-performance and low-toxicity chemical reagent, so that the environment-friendly requirement is met. The preparation process is simple and efficient, industrial production is easy to realize, and the preparation method has wide market application prospects.

The invention provides a method and device for evaluating weather resistance of a high polymer material, and relates to the technical field of aging tests of materials, and the method comprises the following specific steps: selecting a high polymer material sample to carry out an accelerated aging test, and obtaining accelerated aging conditions, mechanical property changes and appearance changes of different time periods according to a plurality of time periods; according to the method, the accelerated aging conditions in all time periods are averaged, correlation analysis is carried out, a plurality of environment severe coefficients are generated, the mechanical property changes in the adjacent time periods and the corresponding environment severe coefficients are calculated, different weather resistance coefficients are obtained, and the weather resistance of the material is comprehensively evaluated by comparing the different weather resistance coefficients with a preset threshold value. According to the method, the performance change of the material in the aging process is reflected from multiple aspects, so that the weather resistance evaluation is more comprehensive and truly matched with the performance of the material in actual use, the influence of each factor on the weather resistance of the high polymer material can be more accurately evaluated, and a more accurate basis is provided for the weather resistance evaluation.

A process for the accelerated aging and integrated flavoring of alcoholic beverages with selective control over the final flavor profile is described using size-reduced wood and plant-based biomass products in a rapidly-recirculating system at or above atmospheric pressure with the availability of gaseous, liquid, or solids introduction and accentuated by solids sonication and / or ultrasonically-enhanced alcoholic beverage homogenization and / or chemical reactions and with a much-reduced consumption of wood and plant-based biomass.

The invention discloses an aging test method of a PVC (polyvinyl chloride) material, which comprises the following steps: acquiring PVC material detection samples, marking each sample, and recording the information of each detection sample; placing the PVC test sample in an aging oven for accelerated aging test, recording test environment parameters in real time, and drawing an aging performance curve graph according to the test environment parameters; wherein the accelerated aging test method is determined according to the information of the PVC material and comprises at least one of an ultraviolet aging test, a thermo-oxidative aging test and a chemical medium erosion test, and the aging performance test indexes comprise appearance, physical performance and chemical performance; comparing the aging performance test data of the PVC material with the standard requirements, and evaluating whether the aging performance test data meets the aging test requirements or not; and for the PVC material which does not meet the aging test requirement, analyzing and determining the reason for the abnormal performance of the PVC material according to the performance change of the PVC material. According to the aging test method for the PVC material, the aging state of the PVC material can be comprehensively evaluated, so that the reliability of a product can be improved, and the service life of the product can be prolonged.

The invention provides a long-time scale solid surface aging characteristic analysis method and system and electronic equipment, and relates to the technical field of insulation material aging. The method comprises the following steps: preparing a material sample; preparing a solid material sample with good anti-aging performance under a specific working condition according to a material chemical theory and experience; obtaining a solid surface appearance by a high-precision microscope; carrying out accelerated aging on the material at a constant temperature for a certain time; solid surface features including roughness and fractal indexes under different accelerated aging time are extracted, edge curvilinear equation fitting is carried out, and an aging feature curve is generated, so that an aging behavior prediction result is obtained, continuous monitoring and accurate analysis of the solid surface aging process are realized, and the aging behavior prediction accuracy is improved. Through continuous monitoring of the multi-time-node accelerated aging experiment, aging full-period coverage and multi-dimensional data fusion are realized, data accuracy and aging identification precision are improved, and aging behavior prediction precision is improved.

The invention relates to the technical field of tire evaluation, in particular to a method for evaluating the aging loss performance of a rubber engineering tire. The method comprises the following steps: determining tire attributes according to a tire vulcanization process database; constructing a multi-environment composite accelerated aging oven based on the tire vulcanization process database; segmenting a tire sample according to the tire attribute, inputting the tire sample into the multi-environment composite accelerated aging oven, and simulating accelerated aging; sampling according to a preset time interval to obtain an aging simulation result; determining a performance attenuation curve of each tire sample according to the aging simulation result; inputting the performance attenuation curve into an Arrhenius equation, and determining key failure time; and determining the tire performance according to the key failure time and the tire attribute.

The invention discloses an accelerated aging test system and method for a high-density polyethylene buried pipeline, and the system comprises a box body which is internally provided with a test chamber for an aging test; a plurality of buried pipeline test pieces are arranged in the test chamber in a drawable manner through the test piece dismounting and mounting system; the in-pipe pressurization system is used for carrying out gas pressurization on the plurality of buried pipeline test pieces; the water bath system is used for injecting water into the test chamber to provide a water bath environment; the high-temperature system is used for heating the environment temperature in the test chamber or is matched with the water bath system to provide water bath environments with different temperatures for the plurality of buried pipeline test pieces; the ultraviolet irradiation system is used for performing ultraviolet irradiation on the plurality of buried pipeline test pieces; and the in-pipe pressurization system, the water bath system and the high-temperature system are all connected with the control system. According to the invention, coupling conditions of various aging factors during real service of the buried pipeline can be truly and rapidly simulated, effective reference basis can be provided for safe operation and construction design of the high-density polyethylene buried pipeline, and the method has great advantages.

The invention provides a simulated aging test method for an antifouling coating. The simulated aging test method comprises the following steps: S1, constructing a natural aging performance model of the antifouling coating; s2, constructing an accelerated aging model of the antifouling coating and acquiring an acceleration ratio N of natural aging to accelerated aging; s3, based on an accelerated aging model, acquiring an acceleration period Mi corresponding to a critical threshold R (temporary i) of a copper ion exudation rate, wherein the predicted life Lp (temporary i) of the antifouling coating is equal to Mi * N; and S4, based on a natural aging model, obtaining a predicted copper ion exudation rate R < pre-i > corresponding to the predicted life Lp < pre->, judging whether R < pre-i >-R < critical i > / R < critical i > is less than or equal to 10%, if so, outputting a near threshold R < critical i > and the predicted life Lp < pre-i >, and if not, adjusting the critical threshold of the copper ion exudation rate to R < critical i + 1 > and returning to the step S3. According to the method, the performance failure threshold value of the antifouling coating is taken as a boundary condition, the performance of the antifouling coating is rapidly evaluated, the service life of the antifouling coating is quantitatively predicted, the prediction result is subjected to cooperative cross validation through linkage double models, and the reliability is improved.

The invention discloses a life health management method and system for an HR3C material, and relates to the technical field of data processing, and the method comprises the steps: collecting the operation condition data of the HR3C material in a service state, carrying out the creep, fatigue and creep-fatigue interaction performance testing of a welding seam and a heat affected zone, and obtaining the real-time service state data; combining a high-temperature accelerated aging test result to construct a structure-performance coupling model; and performing microscopic damage calculation and residual life prediction based on the organization-performance coupling model and the real-time service state data, and generating a health assessment index to execute health management. The technical problems that in the prior art, damage evolution of the HR3C material under the complex high-temperature working condition cannot be accurately evaluated in real time, and the service life prediction and health management precision is insufficient are solved, and the purposes that through performance coupling analysis and aging process feedback under the multiple working conditions, microcosmic damage is accurately evaluated, and the remaining service life is dynamically predicted are achieved. And the health management precision is improved.

The invention relates to an environmental test box for realizing high and low temperature rapid alternating circulation, which is mainly applied to the technical field of environmental test equipment. The test box is provided with a high-temperature chamber and a low-temperature chamber which are independent from each other, a thermal insulation layer is arranged between the two chambers, and the test box can respectively keep constant temperature environments at the highest temperature of + 75 DEG C and the lowest temperature of-50 DEG C; during a test, a sample is placed in the test bed, and the rotating shaft structure driven by the motor periodically rotates in a reciprocating manner or rotates in the same direction among different temperature zones, so that high-low temperature rapid alternating circulation is realized. The operation mode of the motor is controlled through the control system so as to simulate the accelerated aging process of the component in the temperature rapid alternating environment. According to the test box, through the design of the control system, the forced convection fan and the middle thermal insulation layer, it is guaranteed that the temperature switching process is rapid, uniform and stable. Compared with the prior art, high and low temperature circulation can be completed without overall heating and cooling of the interior of the test box, and the test box has the advantages of being high in test efficiency, capable of remarkably improving the reliability and accuracy of the high and low temperature alternating circulation test of the sample and the like.

The invention relates to the technical field of aging test, in particular to a multi-factor coupling accelerated aging test system, which has the technical scheme that actual working condition fluctuation is simulated through multi-factor coupling accelerated aging, multiple parameters such as temperature, humidity, illumination, mechanical stress and chemical media are controlled at the same time, dynamic cyclic change is realized, simplification of simulation influence factors is avoided, and the test efficiency is improved. The deviation to a real environment is reduced; a miniature temperature sensor, a strain sensor and an electrochemical impedance sensor are integrated on the surface of the sample, so that nondestructive continuous acquisition of performance parameters in the aging process is realized; a central control module is used for artificial intelligence life prediction, an aging model is dynamically corrected by using a machine learning algorithm based on real-time collected data and a historical database, residual life probability prediction is realized, and prediction precision is improved according to an AI dynamic correction model.

The invention relates to the technical field of quality analysis of plastic packaging materials, and particularly discloses a quality analysis method of a plastic packaging product, which comprises the following steps of: acquiring chemical composition information of a target material by adopting Fourier transform infrared spectroscopy and thermogravimetric analysis, and constructing an atomic-scale three-dimensional molecular model on the basis of polymer types and auxiliary ratio; auxiliary agent diffusion behaviors are simulated and tracked through molecular dynamics, and key transmission parameters are obtained; importing the parameters into a finite element model, establishing a multi-physics field coupling migration simulation model, and simulating the migration trends of the assistants under different environmental conditions; establishing a quantitative correlation model to predict the long-term stability of the material by combining accelerated aging experiment data; according to the method, the prediction precision of the service life and the function stability of the plastic packaging material is improved, the research and development cost is reduced, and the product quality consistency and the market competitiveness are improved.

The invention relates to the technical field of aging test, and discloses a laser chip accelerated aging test method, which comprises the following steps: synchronously measuring the optical power, the threshold current, the slope efficiency and the emergent wavelength of a laser chip in an accelerated aging environment to obtain a time sequence data matrix; performing double sparse dictionary decomposition on the time series data matrix to obtain a normal feature coefficient and a degradation feature coefficient; calculating a target characteristic value of the time-varying covariance matrix based on the degradation characteristic coefficient, and generating a dynamic characteristic value sequence and a corresponding degradation stage identifier according to the target characteristic value; and based on the degradation stage identifier, inputting the dynamic characteristic value sequence into a life prediction model for life prediction, and obtaining the remaining service life. The method can accurately capture the nonlinear characteristic and the time evolution mode of the laser chip degradation process, automatically identify the time period characteristic which contributes to life prediction, and improve the service life of the laser chip. And the accelerated aging test accuracy of the laser chip is improved.

The invention discloses a durability test method for an electronic controller, and particularly relates to the technical field of electronic equipment, and the method comprises the following steps: firstly, obtaining and installing an electronic controller sample on test equipment connected with a sensor and data recording equipment; then carrying out an accelerated aging experiment under an extreme condition, carrying out a normal operation experiment under a standard working condition, and respectively generating an accelerated aging data set and a normal operation data set; analyzing the data to generate an accelerated aging index and an operation fluctuation index; inputting the two indexes into a machine learning model to generate a durability coefficient; and finally, comparing the coefficient with a preset standard to judge whether the durability of the sample reaches the standard or not. According to the method, a mode of combining the accelerated aging index and the operation fluctuation index is adopted, the durability of the electronic controller is comprehensively evaluated, the overall performance of the controller in actual use can be more comprehensively reflected through combination of double indexes, and deviation possibly caused by single-index evaluation is avoided.