Coating lifetime assessment method, system, product, medium and computer device

Abstract

The present application belongs to the technical field of coating life evaluation. A coating life evaluation method, system, product, medium and computer equipment are proposed. The measured environmental parameters are collected to model and generate environmental load parameters, on the basis of which each environmental module is regulated to match the test load with the actual working condition. The degradation response is periodically collected, and the environmental load parameters are dynamically corrected in combination with the change rate. The calibrated degradation response is divided into damage evaluation units according to the environment, and the comprehensive life evaluation quantity is obtained by rule fusion. The test load is inversely regulated according to the fluctuation of the evaluation quantity. Finally, the coating degradation trend under multi-environment coupling is analyzed according to the change rule of the comprehensive life evaluation quantity with time, and the life evaluation is completed. The present application forms a closed-loop test regulation logic, quantifies the multi-environment damage, effectively improves the evaluation accuracy, and shortens the test cycle.

Description

Technical Field

[0001] This invention relates to the field of coating life assessment technology, and proposes a coating life assessment method, system, product, medium and computer equipment. Background Technology

[0002] With the continuous advancement of industrialization in high-end equipment, marine engineering, and rail transportation, various metal components generally rely on functional coatings for corrosion and erosion protection. These coatings are subjected to a coupled service environment with factors such as humidity, heat, salt spray, and dust for extended periods. The industry needs to predict the full-cycle degradation patterns of coatings through testing methods to support the selection of new materials and the design of equipment operation and maintenance solutions. Currently, the industry has developed various coating durability testing technologies, including natural exposure and single-environment accelerated testing. Various environmental accelerated tests are equipped with independent environmental loading equipment and supporting testing devices. Related testing methods have been widely applied in engineering scenarios such as coating product factory verification and new material performance comparison. The techniques for applying various environmental loads individually and the coating physicochemical index testing techniques are becoming increasingly mature, becoming an indispensable basic technical support for coating life evaluation.

[0003] Current coating life assessments employ a static loading mode under fixed operating conditions, relying solely on preset environmental parameters for continuous testing. This approach fails to dynamically adjust environmental loads based on the coating's real-time degradation status, makes it difficult to control test conditions through coating degradation feedback loops, and cannot break down damage into environmental dimensions and synthesize a unified comprehensive evaluation index. Consequently, it cannot accurately reproduce the real degradation process under multi-environment coupling, cannot rely on unified quantitative comprehensive indicators to complete accelerated life assessments, and cannot guarantee that the assessment results accurately reflect the actual service degradation characteristics of the coating. Summary of the Invention

[0004] To address the problems of traditional static loading under fixed conditions failing to dynamically adjust test conditions based on coating degradation and lacking comprehensive damage quantification indicators, the present invention aims to provide a coating life assessment method, system, product, medium, and computer equipment. This method periodically collects degradation response data and dynamically calibrates environmental loads based on degradation rate, forming a closed-loop control logic that links test loading with coating degradation, thus overcoming the limitations of traditional test conditions that are solidified throughout the entire process.

[0005] To achieve the above objectives, the present invention is implemented through the following technical solution: In a first aspect, the present invention provides a method for evaluating coating life.

[0006] A method for assessing coating life includes the following procedures: A multi-environmental load model is constructed by retrieving measured environmental parameters, and environmental load parameters characterizing the intensity of various environmental physical actions are generated. Based on the environmental load parameters, control instructions are generated, and the operating parameters of each environmental module are adjusted using the control instructions to make the composite environmental load applied in the test match the environmental load parameters corresponding to the actual working conditions. The degradation response is obtained by periodically collecting coating degradation data. The stability of the load condition is determined based on the rate of change of the degradation response. When the rate of change exceeds the preset range, a calibration command is generated to dynamically correct the environmental load parameters in order to obtain the calibrated degradation response. The calibrated degradation response is used to construct independent damage evaluation sub-items for each environment. All damage evaluation sub-items are then integrated according to a preset synthesis rule to generate a comprehensive lifetime evaluation quantity. Based on the changing pattern of the comprehensive life evaluation quantity over time, the degradation trend of the coating under multi-environment coupling is analyzed, and the service life assessment of the coating is completed.

[0007] In one implementation of the first aspect of the present invention, a dedicated data acquisition channel is set up for each environmental module, and degradation responses are collected through the acquisition channel in separate channels; each degradation response is stored in an independent data buffer and bound with a timestamp to generate record data with traceability attributes; the degradation response in the data buffer is read to calculate the rate of change, and a calibration command is output after the rate exceeds a preset range.

[0008] In one implementation of the first aspect of the present invention, a unique data identifier is configured for each damage evaluation sub-item, and a multi-environment damage index table is established based on the data identifier; the damage evaluation sub-items are scheduled in sequence according to the multi-environment damage index table and written into the comprehensive evaluation cache in turn; all damage evaluation sub-items in the comprehensive evaluation cache are processed uniformly, and the dataset corresponding to the comprehensive life evaluation quantity is output.

[0009] In one implementation of the first aspect of the present invention, the degradation response includes four types of detection indicators: coating erosion amount, corrosion depth, adhesion parameters, and surface morphology parameters. The coating erosion amount is determined by a mass change detection device, the corrosion depth is determined by a surface measurement device, the adhesion parameters are determined by a mechanical testing device, and the surface morphology parameters are determined by a morphology detection device. The measured environmental parameters include five basic data: temperature, humidity, salt spray concentration, dust particle size, and airflow velocity.

[0010] In one implementation of the first aspect of the present invention, the formula for calculating the environmental load parameters is as follows: ;in, For equivalent environmental load parameters, Salt spray concentration, For airflow velocity, The average particle size of the dust is... This is the salt spray intensity coefficient. This represents the intensity coefficient of sand and dust action.

[0011] In one implementation of the first aspect of the present invention, the load adjustment command includes two types of control logic: one type is used to change the order in which various environmental loads are applied, and the other type is used to change the duration of each environmental load.

[0012] In one implementation of the first aspect of the present invention, constructing a comprehensive life assessment quantity includes: converting the original damage values ​​corresponding to each damage assessment sub-item into... Divide by the corresponding limit value Standardized damage values ​​were obtained. ; for each standardized damage value Configure dedicated weighting coefficients According to the formula Weighted sum of all standardized damage values, weighted result As a comprehensive life assessment metric.

[0013] In one implementation of the first aspect of the present invention, degradation response is repeatedly collected at a fixed period, and all data collected in each iteration are summarized to generate a degradation response time series. The degradation response time series is used to iteratively update the damage evaluation sub-items constructed subsequently.

[0014] Secondly, the present invention provides a coating life assessment system.

[0015] A coating life assessment system, comprising: The parameter modeling unit is configured to: retrieve measured environmental parameters to construct a multi-environmental load model and generate environmental load parameters characterizing the intensity of various environmental physical actions; The load matching unit is configured to generate control commands based on environmental load parameters, and use the control commands to control the operating parameters of each environmental module so that the composite environmental load applied in the test matches the environmental load parameters corresponding to the actual working conditions. The load calibration unit is configured to: periodically acquire coating degradation data to obtain degradation response, determine load condition stability based on the rate of change of degradation response, and generate calibration instructions to dynamically correct environmental load parameters in case of abnormality in order to obtain calibrated degradation response; The damage synthesis unit is configured to: construct independent damage evaluation sub-items from the calibrated degradation response in different environments, and integrate all damage evaluation sub-items according to preset synthesis rules to generate a comprehensive lifetime evaluation quantity; The life assessment unit is configured to: analyze the degradation trend of the coating under multi-environment coupling based on the change law of the comprehensive life assessment quantity over time, and complete the service life assessment of the coating.

[0016] Thirdly, the present invention provides a computer-readable storage medium storing a computer program adapted to be loaded by a processor and to execute the coating lifetime assessment method of the first aspect of the present invention.

[0017] Fourthly, the present invention provides a computer program product, which includes a computer program. When the computer program is executed by a processor, it implements the coating life assessment method of the first aspect of the present invention.

[0018] Fifthly, the present invention provides a computer device, comprising: a processor and a computer-readable storage medium; the processor being adapted to execute a computer program; and the computer-readable storage medium storing the computer program, wherein when the computer program is executed by the processor, it implements the coating life assessment method of the first aspect of the present invention.

[0019] The beneficial effects of the present invention are as follows: This invention transforms the traditional fixed-condition loading mode into a dynamic matching mode based on the actual degradation state of the coating by constructing a control system centered on environmental load parameters. This allows the test process to adjust synchronously with the coating degradation behavior, thus realizing the shift from static condition evaluation to dynamic degradation evaluation. This invention establishes a closed-loop control mechanism by periodically detecting the degradation response and feeding back to correct the environmental load parameters. When the rate of change of the degradation response exceeds a preset range, a calibration process is automatically triggered, ensuring that the application of multiple environmental loads always falls within the target degradation rate range. This avoids the problem of evaluation results deviating from the actual service state caused by fixed-condition loading in traditional methods. Simultaneously, by constructing the degradation response under different environmental loads as independent damage evaluation sub-items and performing equivalent damage synthesis according to preset rules, an evaluation quantity that comprehensively reflects the overall degradation state of the coating is formed. This solves the technical problem in existing technologies of the difficulty in uniformly characterizing the degree of coating degradation under multiple coupled environmental effects, significantly improving the ability of life assessment results to characterize the actual service degradation behavior of the coating. Attached Figure Description

[0020] The accompanying drawings, which form part of this invention, are used to provide a further understanding of the invention. The illustrative embodiments of the invention and their descriptions are used to explain the invention and do not constitute an improper limitation of the invention.

[0021] Figure 1 A schematic flowchart illustrating the coating life assessment method provided in this application embodiment; Figure 2 A schematic flowchart illustrating the periodic detection and dynamic calibration process of degradation response provided in this application embodiment; Figure 3 A flowchart illustrating the process of generating equivalent damage synthesis and comprehensive life evaluation parameters provided in this application embodiment; Figure 4 This is a schematic diagram of the coating life assessment system provided in the embodiments of this application; Figure 5A schematic diagram of the structure of a computer device provided in an embodiment of this application. Detailed Implementation

[0022] It should be noted that the following detailed description is illustrative and intended to provide further explanation of the invention. Unless otherwise specified, all technical and scientific terms used in this invention have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains.

[0023] The coating life assessment method provided in this application is based on the core technical idea of ​​establishing a dynamic evaluation system with coating degradation state as the feedback core. This system transforms various physical factors in the actual service environment into quantifiable equivalent load parameters and continuously monitors the coating degradation response during the test. It dynamically adjusts the environmental load application method according to the rate of change of the degradation response, thereby achieving synchronous matching between the test loading process and the actual degradation behavior of the coating. The innovation of this invention lies in overcoming the limitations of traditional fixed-condition loading modes. By constructing a two-way feedback mechanism between environmental load parameters and degradation response, the test process can adaptively adjust according to the actual degradation state of the coating, ensuring that the multi-environment load application process is always within the target degradation rate range. Simultaneously, this method constructs degradation responses under different environmental loads as independent damage evaluation sub-items and integrates them according to preset equivalent damage synthesis rules, forming an evaluation quantity that comprehensively reflects the overall degradation degree of the coating. This solves the technical problem in the prior art of difficulty in uniformly characterizing the coating degradation degree under multiple coupled environmental effects. The implementation of this invention does not rely on complex hardware systems or special testing equipment. It can be achieved by adding data acquisition channels and control logic modules to existing testing platforms, and has good engineering applicability and scalability.

[0024] In this embodiment, the test platform includes a sample mounting area, multiple environmental load modules, and a central control unit. The environmental load modules include, but are not limited to, a salt spray corrosion module, a sandstorm erosion module, and a damp heat cycling module. Each environmental load module is independently configured and can be started and stopped individually under the control of the central control unit. The sample mounting area is used to fix the coating sample to be tested, ensuring that the sample can uniformly withstand various environmental loads during the test. The salt spray corrosion module generates atomized droplets containing salt to corrode the coating surface, simulating the effects of marine or salt spray environments on the coating. The sandstorm erosion module uses high-speed airflow to carry sand particles to impact and abrade the coating surface, simulating the effects of wind and sand environments or particulate matter impacts on the coating. The damp heat cycling module simulates the effects of alternating temperature and humidity environments on the coating by controlling the periodic changes in ambient temperature and humidity. The central control unit, as the core control component of the entire test platform, is responsible for coordinating the operating status of each environmental load module, receiving and processing degradation response detection data, generating environmental load control commands according to preset control logic, and realizing the synchronous or sequential application of multiple environmental loads. The experimental platform design fully considers the coupled influence of multiple environmental factors on coating degradation behavior. Through modular design, it realizes independent control and flexible combination of different environmental loads, providing a hardware foundation for subsequent dynamic calibration and equivalent damage evaluation based on degradation response.

[0025] The coating life assessment method provided in the embodiments of this application will be described in detail below with reference to the accompanying drawings. Figure 1 As shown, the method includes the following main steps: 1) Retrieving measured environmental parameters to construct a multi-environmental load model and generating environmental load parameters characterizing the intensity of various environmental physical actions (step S101); 2) Generating control commands based on the environmental load parameters, and using these commands to control the operating parameters of each environmental module, so that the composite environmental load applied in the experiment matches the environmental load parameters corresponding to the actual working conditions (step S102); 3) Periodically collecting coating degradation data to obtain the degradation response, determining the stability of the load condition based on the rate of change of the degradation response, and generating calibration commands to dynamically correct the environmental load parameters when abnormalities occur (step S103); 4) Constructing independent damage evaluation sub-items for each environment based on the calibrated degradation response, integrating all damage evaluation sub-items according to preset synthesis rules to generate a comprehensive life evaluation quantity, and generating a load adjustment command in reverse if the change of the comprehensive life evaluation quantity exceeds the limit (step S104); 5) Analyzing the multi-environmental coupled degradation trend of the coating based on the change law of the comprehensive life evaluation quantity over time, and completing the coating service life assessment (step S105).

[0026] In some embodiments, the coating life assessment method is applied to evaluation scenarios of coating protective performance in fields such as rail transit equipment, aerospace equipment, marine engineering equipment, and new energy equipment. In these application scenarios, coatings typically need to withstand the combined effects of multiple environmental factors over a long period of time, and their degradation behavior exhibits obvious nonlinear characteristics and multi-factor coupling characteristics. Traditional single-factor test methods are difficult to accurately reflect the degradation process of coatings under actual service conditions.

[0027] In this embodiment, the specific implementation steps of the coating life assessment method are as follows. It should be noted that the step numbers in the following embodiments are for ease of description and understanding only and do not represent that the steps must be executed in a specific order. In practical applications, the execution order of some steps can be adjusted according to specific needs, or some steps can be processed in parallel, as long as the final technical effect is not affected. Furthermore, the specific parameter settings and data processing methods involved in the following embodiments are illustrative examples, and those skilled in the art can make appropriate adjustments according to actual application scenarios.

[0028] S101. Construct a multi-environmental load model by retrieving measured environmental parameters, generating environmental load parameters characterizing the intensity of various environmental physical actions. In this step, it is first necessary to collect environmental parameter data corresponding to the actual service conditions of the coating. These environmental parameter data include, but are not limited to, ambient temperature, ambient humidity, salt spray concentration, dust particle size distribution, and airflow velocity data. Ambient temperature reflects the thermodynamic state of the environment in which the coating is located, affecting the physicochemical properties and degradation rate of the coating material. Ambient humidity reflects the change in the moisture content of the coating surface, affecting the corrosion behavior and adhesion performance of the coating. Salt spray concentration reflects the salt content level in the environment and is an important factor leading to electrochemical corrosion of the coating. Dust particle size distribution reflects the size characteristics of solid particles in the environment, affecting the erosion and wear behavior of the coating surface. Airflow velocity reflects the motion state of the fluid medium in the environment, affecting the intensity of the effects of salt spray and dust on the coating surface. After obtaining the above environmental parameter data, these basic environmental parameters need to be converted into equivalent load parameters that can characterize the intensity of the physical actions exerted on the coating. The purpose of this conversion is to establish a quantitative relationship between environmental factors and coating degradation behavior, so that test results under different environmental conditions can be compared and analyzed using unified load parameters. In this embodiment, the equivalent environmental load parameters are calculated using the following formula: (1); in, The equivalent environmental load parameter is expressed in N / m², which comprehensively reflects the intensity of the physical effects of salt spray corrosion and sand erosion on the coating surface. Salt spray concentration, expressed in g / m³, reflects the salt content level in the environment; Airflow velocity, measured in m / s, reflects the motion state of the fluid medium; The average particle size of dust, expressed in μm, reflects the size characteristics of solid particles. The salt spray intensity coefficient is dimensionless and reflects the coupled effect of salt spray concentration and airflow velocity on coating corrosion. The dust impact intensity coefficient, dimensionless, reflects the coupled influence of dust particle size and airflow velocity on coating erosion. The physical meaning of this formula is as follows: the corrosive effect of salt spray on the coating is proportional to the square of the salt spray concentration and the airflow velocity, because the increase in airflow velocity not only increases the kinetic energy of salt spray particles but also enhances the deposition efficiency of salt spray on the coating surface; the erosive effect of dust on the coating is proportional to the dust particle size and the airflow velocity, because larger dust particles have higher momentum and exert a stronger impact on the coating surface at the same airflow velocity. The equivalent environmental load parameter calculated by this formula can uniformly characterize the intensity of different environmental factors into a comprehensive physical quantity, providing a quantitative basis for subsequent environmental load matching and dynamic calibration.

[0029] In some embodiments, empirical coefficients and The values ​​of α and β can be determined through experimental calibration. Specifically, single-factor salt spray corrosion tests and single-factor dust erosion tests can be conducted on a test platform to measure the degradation response of the coating under different salt spray concentrations, airflow velocities, and dust particle sizes. The values ​​of α and β can then be determined through data fitting. In other embodiments, empirical coefficients are used. and The values ​​can also be set with reference to existing material erosion test standards or empirical data in relevant literature. It should be noted that the above formula for calculating the equivalent environmental load parameters is only an exemplary expression. In practical applications, the formula can be appropriately adjusted according to the specific type and mechanism of environmental factors. For example, if other environmental factors such as ultraviolet radiation and temperature cycling exist in the coating's service environment, corresponding terms can be added to the formula to reflect the intensity of these factors. Furthermore, for certain special coating materials or application scenarios, the relationship between the intensity of salt spray and dust effects and environmental parameters may exhibit nonlinear characteristics. In such cases, a more complex mathematical model can be used to describe this relationship. The linear weighted calculation formula used in this embodiment has the advantages of being simple in form, having clear physical meaning, and being easy to apply in engineering, achieving satisfactory results in most application scenarios. The multi-environmental load model established in this step realizes the transformation from basic environmental parameters to equivalent load parameters, laying a theoretical foundation for subsequent environmental load matching and dynamic calibration. The core value of this model lies in simplifying complex multi-environmental coupling effects into quantifiable and controllable physical parameters. This allows the experimental process to be dynamically adjusted according to the actual degradation state of the coating, thereby improving the ability of life assessment results to characterize real service conditions. Furthermore, the model provides a unified evaluation standard for cross-sectional comparisons between different experimental results. It enables experimental data obtained under different environmental conditions to be normalized using equivalent load parameters, solving the technical problems of large dispersion of evaluation results and lack of unified comparison standards in traditional methods.

[0030] S102. Generate control commands based on environmental load parameters, and use these commands to adjust the operating parameters of each environmental module, ensuring that the composite environmental load applied in the test matches the environmental load parameters corresponding to the actual working conditions. In this step, the central control unit generates command signals for adjusting the operating status of each environmental module based on the equivalent environmental load parameters calculated in step S101. These control commands include, but are not limited to, the salt spray concentration setting value for the salt spray corrosion module, the sand supply rate and airflow velocity setting values ​​for the sand erosion module, and the temperature and humidity setting values ​​for the damp heat cycle module. The generation process of the control commands is essentially a reverse solution process, that is, deducing the operating parameters that each environmental module should be set based on the target equivalent load parameters. In this embodiment, this reverse solution process can be implemented using a numerical iteration method. The specific steps are as follows: first, set the initial values ​​of the operating parameters of each environmental module, calculate the corresponding equivalent load parameters, compare the calculated values ​​with the target values, adjust the operating parameters of each environmental module according to the magnitude of the deviation, and repeat the above process until the deviation between the calculated values ​​and the target values ​​is less than a preset threshold. After the control command is generated, the central control unit sends the command signal to each environmental module. Each environmental module adjusts its own operating state according to the received command, thereby matching the composite environmental load applied in the test with the environmental load parameters corresponding to the actual working conditions. The core advantage of this control method based on equivalent load parameters is that it integrates the coupling effects of multiple environmental factors into the control system. This means that the test process is no longer simply a fixed loading according to preset working conditions, but rather the environmental load application method is dynamically adjusted according to the actual degradation state of the coating, thus realizing the transformation from static working condition evaluation to dynamic degradation evaluation.

[0031] In some embodiments, the generation process of control commands can also consider the mutual influence between environmental modules. For example, when the salt spray corrosion module and the damp heat cycling module operate simultaneously, the temperature and humidity changes generated by the damp heat cycling module may affect the deposition efficiency of salt spray on the coating surface, thereby changing the actual intensity of salt spray corrosion. To eliminate this mutual influence, the central control unit needs to introduce a coupling correction coefficient when generating control commands to compensate and adjust the operating parameters of each environmental module. In other embodiments, the generation process of control commands can also consider the order of application of environmental loads. In actual service environments, coatings often first endure one type of environmental load and then another type of environmental load; different application sequences may lead to different degradation behaviors of the coating. To more realistically simulate actual service conditions, the central control unit can set the start-up and shutdown sequence and duration of each environmental module according to the frequency and duration of various environmental factors in actual operating conditions. For example, for coatings operating in coastal areas, salt spray corrosion load can be applied first, followed by damp heat cycling load, and finally sandstorm erosion load, with the duration of each stage determined based on actual meteorological data. The environmental load matching process implemented in this step ensures that the multiple environmental loads borne by the coated specimens on the test platform are equivalent to actual service conditions, providing reliable test conditions for subsequent dynamic calibration and equivalent damage assessment based on degradation response. The benefits of this step are twofold: firstly, by uniformly characterizing the intensity of multiple environmental factors as equivalent load parameters, the comparability of test results under different environmental conditions is achieved; secondly, by dynamically adjusting the operating parameters of each environmental module, the test process can change synchronously with the coating degradation state, improving the ability of the life assessment results to characterize real service conditions.

[0032] S103. Periodically collect coating degradation data to obtain the degradation response. Determine the stability of the load condition based on the rate of change of the degradation response. In case of anomalies, generate calibration instructions to dynamically correct the environmental load parameters. In this step, the test platform is equipped with a dedicated detection system for periodically collecting coating degradation data. The detection system includes, but is not limited to, a mass change detection device for detecting erosion amount, a surface measurement device for detecting corrosion depth, and a mechanical testing device for detecting adhesion changes. During the test, the detection system detects the degradation state of the coating sample at preset time intervals, acquiring degradation response data such as erosion amount, corrosion depth, adhesion changes, and surface morphology parameters of the coating surface. Erosion amount reflects the mass loss of the coating material under sand and dust impact, and is usually obtained by weighing the sample to measure the mass change before and after the test. Corrosion depth reflects the thickness reduction of the coating material under salt spray corrosion, and is usually obtained by measuring the depth change of the coating surface using an ultrasonic thickness gauge or a laser scanner. Adhesion changes reflect the attenuation of the bonding strength between the coating and the substrate, and are usually obtained by measuring the adhesion value of the coating through pull-out tests or cross-cut tests. Surface morphology parameters reflect changes in the microstructure of the coating surface and are typically obtained by observing the surface morphology using scanning electron microscopy or atomic force microscopy. After acquiring the degradation response data, the central control unit processes and analyzes the data to calculate the rate of change of the degradation response. The rate of change of the degradation response is defined as the difference between the degradation response values ​​at two adjacent detection times divided by the time interval; this parameter reflects the speed of the coating degradation process. The central control unit compares the calculated rate of change of the degradation response with a preset target range to determine the stability of the current load condition. If the rate of change of the degradation response is within the target range, it indicates that the current environmental load application is reasonable and the coating degradation process is within the expected rate range; the test continues under the current conditions. If the rate of change of the degradation response exceeds the target range, it indicates that the current environmental load application is abnormal, and the coating degradation rate is too fast or too slow, requiring correction of the environmental load parameters. At this time, the control logic module inside the central control unit triggers a feedback calibration process, generating calibration instructions for correcting the environmental load parameters.

[0033] In some embodiments, the specific implementation of the feedback calibration process is as follows: Figure 2As shown. First, corresponding data acquisition channels are set up for different environmental load modules in the test platform (step S201), and the degradation state of the coating is collected through these channels. The purpose of setting up data acquisition channels is to achieve independent acquisition and storage of degradation data under different environmental loads, avoiding the mutual confusion of the influence of different environmental factors on the degradation response. For example, a corrosion depth acquisition channel is set up for the salt spray corrosion module, an erosion amount acquisition channel is set up for the sand and dust erosion module, and an adhesion change acquisition channel is set up for the wet heat cycling module. Second, the degradation response data acquired by different data acquisition channels are stored in independent data buffers, and timestamp information is set for different data buffers to form traceable data records (step S202). The timestamp information records the specific time of each detection, so that the generation time of each degradation data and the corresponding environmental load application state can be accurately traced during subsequent analysis. Third, based on the degradation response change rate in each data buffer, the stability of the current environmental load application state is judged (step S203). The central control unit reads the degradation response data from each data buffer, calculates the degradation response change rate for each data buffer, and compares each rate value with the corresponding target range. If the degradation response change rate for a certain data buffer exceeds the target range, it indicates that the application state of the environmental load module is abnormal, and a calibration command for that module needs to be generated (step S204). Finally, when the change rate exceeds the preset range, a feedback control command is generated to initiate the parameter correction process of the environmental load control module (step S205). The feedback control command includes information such as the environmental module identifier to be adjusted, the adjustment direction, and the adjustment magnitude. The central control unit corrects the operating parameters of the corresponding environmental module according to the feedback control command, so that the degradation response change rate returns to the target range.

[0034] In other embodiments, the feedback calibration process can also be implemented using an adaptive control algorithm. The core idea of ​​the adaptive control algorithm is to dynamically adjust the correction magnitude and direction of the environmental load parameters based on the real-time changes in the degradation response, enabling the system to quickly converge to the target degradation rate range. Specifically, a proportional-integral-derivative (PID) control algorithm can be used, where the deviation between the degradation response rate and the target value is used as the control error. The correction amount of the environmental load parameters is calculated through a combination of proportional, integral, and derivative terms. The proportional term reflects the magnitude of the current deviation, the integral term reflects the cumulative effect of historical deviations, and the derivative term reflects the trend of deviation changes. The combined effect of these three terms allows the control system to respond quickly to changes in the degradation response while maintaining stability. This dynamic calibration process establishes a closed-loop feedback mechanism between the degradation response and the environmental load parameters, enabling the experimental process to adaptively adjust according to the actual degradation state of the coating. The benefits of this step are twofold: First, by periodically detecting the degradation response and providing real-time feedback to correct environmental load parameters, it ensures that the application of multiple environmental loads remains within the target degradation rate range, avoiding deviations between evaluation results and actual service conditions caused by fixed-condition loading. Second, by setting up dedicated data acquisition channels and independent data buffers for different environmental load modules, it enables channel-specific acquisition and traceable storage of degradation data, providing a reliable data foundation for the subsequent construction of damage evaluation sub-items. Furthermore, by binding timestamp information, this step allows each degradation data point to be associated with its corresponding environmental load application state, providing data support for analyzing the impact of multiple environmental factors on coating degradation behavior.

[0035] S104. The calibrated degradation response is used to construct independent damage evaluation sub-items for each environment. All damage evaluation sub-items are then integrated according to a preset synthesis rule to generate a comprehensive lifetime evaluation value. If the change in the comprehensive lifetime evaluation value exceeds the limit, a load adjustment command is generated in reverse. In this step, the central control unit reads the calibrated degradation response data from step S103 and constructs independent damage evaluation sub-items for the degradation responses obtained under different environmental loads. A damage evaluation sub-item is the basic evaluation unit reflecting the degree of coating degradation under a specific environmental load. Each damage evaluation sub-item corresponds to a type of environmental load and a set of degradation response data. For example, the damage evaluation sub-item corresponding to salt spray corrosion load includes corrosion depth data, the damage evaluation sub-item corresponding to sandstorm erosion load includes erosion amount data, and the damage evaluation sub-item corresponding to wet heat cycling load includes adhesion change data. When constructing damage evaluation sub-items, the original degradation response data first needs to be standardized to eliminate differences in dimensions and numerical ranges between different types of degradation responses. The standardization process uses the following formula: (2); in, To standardize the damage values, dimensionless, reflecting the proportion of coating degradation degree relative to the limit allowable value under a certain type of environmental action; This represents the original damage value under a certain type of environmental action. The unit is determined according to the specific degradation response type. For example, the unit of erosion is mg, the unit of corrosion depth is μm, and the unit of adhesion is MPa. This represents the limit allowable value for the corresponding index, with the same unit as Di, reflecting the failure threshold of the coating under this type of degradation response. The physical meaning of this formula is to normalize the original damage values ​​of different types to a proportion relative to the failure threshold, allowing for comparison and synthesis of different types of degradation responses within a unified evaluation framework. The standardized damage value ranges from 0 to 1. When the standardized damage value is close to zero, it indicates that the coating has undergone relatively mild degradation under this type of environmental action and is far from the failure threshold; when the standardized damage value is close to one, it indicates that the coating has undergone relatively severe degradation under this type of environmental action and is close to failure.

[0036] After standardization, different damage evaluation sub-items are integrated according to a pre-defined equivalent damage synthesis rule to form a comprehensive lifetime evaluation quantity characterizing the overall degradation state of the coating. The core idea of ​​the equivalent damage synthesis rule is to synthesize the degradation responses under different environmental loads through a weighted summation, where the weighting coefficients reflect the contribution of various environmental loads to the overall degradation degree of the coating. The comprehensive lifetime evaluation quantity is calculated using the following formula: (3); in, It is a dimensionless comprehensive life evaluation metric that reflects the overall degree of degradation of the coating under the coupled effects of multiple environments. The weights for each damage unit are dimensionless and reflect the first... The contribution weight of environmental loads to the overall degradation of the coating is such that the sum of all weights equals one. For the first Standardized damage values ​​corresponding to environmental loads; This formula represents the summation of all damage assessment sub-items. The physical meaning of this formula is that the comprehensive life assessment quantity is a weighted average of standardized damage values ​​under various environmental loads. The weighting coefficients reflect the relative importance of different environmental factors on the coating degradation behavior. In practical applications, the weighting coefficients can be determined based on the intensity, frequency, or impact of the environmental loads on coating performance. For example, for coatings operating in coastal areas, salt spray corrosion is the main degradation factor, and its corresponding weighting coefficient should be relatively large; while for coatings operating in arid inland areas, sand erosion is the main degradation factor, and its corresponding weighting coefficient should also be relatively large. By reasonably setting the weighting coefficients, the comprehensive life assessment quantity can more accurately reflect the overall degradation degree of the coating under actual service conditions. In some embodiments, the weighting coefficients can also be determined using multivariate statistical methods such as principal component analysis or analytic hierarchy process (AHP). Through statistical analysis of a large amount of experimental data, the contribution of various environmental factors to the coating degradation behavior can be quantitatively assessed, thereby obtaining a more scientific and reasonable weight allocation scheme.

[0037] After generating the comprehensive lifetime assessment value, the central control unit continuously monitors the change pattern of the comprehensive lifetime assessment value over time and calculates the rate of change. The rate of change of the comprehensive lifetime assessment value is defined as the difference between the values ​​of the comprehensive lifetime assessment value at two adjacent calculation times divided by the time interval. This parameter reflects the speed of the overall degradation process of the coating. The central control unit compares the rate of change of the comprehensive lifetime assessment value with a preset threshold to determine whether the current multi-environment load application state is reasonable. If the rate of change of the comprehensive lifetime assessment value is within the preset threshold range, it indicates that the current multi-environment load application state is reasonable, and the overall degradation process of the coating is within the expected rate range, and the test continues according to the current conditions. If the rate of change of the comprehensive lifetime assessment value exceeds the preset threshold, it indicates that the current multi-environment load application state is abnormal, and the overall degradation rate of the coating is too fast or too slow, requiring adjustment of the multi-environment load application process. At this time, the central control unit triggers a reverse adjustment process, generating a load adjustment command for adjusting the multi-environment load application method. The load adjustment commands include two types of control logic: one type is used to change the order in which various environmental loads are applied, adjusting the order in which the coating is subjected to environmental loads by changing the start-up and shutdown sequence of different environmental load modules; the other type is used to change the duration of each environmental load, adjusting the cumulative effect of that type of environmental load on the coating by extending or shortening the working time of a certain type of environmental load module. Through the combined application of these two types of control logic, the application method of multiple environmental loads can be flexibly adjusted, bringing the rate of change of the overall life assessment parameters back to the target range, ensuring that the overall degradation process of the coating remains under control.

[0038] In some embodiments, the specific implementation of the equivalent damage synthesis process is as follows: Figure 3As shown in the diagram. First, independent data identification codes are assigned to the damage evaluation sub-items corresponding to different environmental loads (step S301). The data identification codes adopt an encoding method of environmental type plus time sequence number. For example, the damage evaluation sub-items corresponding to salt spray corrosion load are coded as SF-001, SF-002, etc., and the damage evaluation sub-items corresponding to sand and dust erosion load are coded as SD-001, SD-002, etc. Second, a multi-environment damage index table is established based on the data identification codes (step S302). The index table records information such as the code of each damage evaluation sub-item, the corresponding environmental load type, the standardized damage value, and the weight coefficient. Third, the original damage values ​​are standardized (step S303). According to the multi-environment damage index table, different damage evaluation sub-items are scheduled sequentially. The central control unit reads the data of each damage evaluation sub-item in the order recorded in the index table. Then, each damage evaluation sub-item is written into the comprehensive evaluation buffer one by one according to the scheduling order (step S304). Finally, the damage evaluation sub-items in the comprehensive evaluation buffer are uniformly output (step S305). The central control unit reads all damage evaluation sub-item data in the buffer, calculates the comprehensive lifetime evaluation quantity according to the equivalent damage synthesis formula, and stores the calculation results to form a comprehensive lifetime evaluation quantity dataset. This dataset records the change process of the comprehensive lifetime evaluation quantity with test time and can be output as a curve or table for engineering analysis. The equivalent damage synthesis process implemented in this step integrates the degradation response under different environmental loads into a unified comprehensive lifetime evaluation quantity, solving the technical problem in the prior art that it is difficult to uniformly characterize the degree of coating degradation under multiple environmental coupling effects.

[0039] The effects of this step are as follows: First, standardization eliminates the differences in dimensions and numerical ranges between different types of degradation responses, enabling the comparison and synthesis of different types of degradation data within a unified evaluation framework, thus improving the comparability of evaluation results. Second, by generating a comprehensive lifetime evaluation quantity through weighted summation, an evaluation index that comprehensively reflects the overall degradation degree of the coating is established, solving the technical problem of difficulty in forming comprehensive evaluation indicators in traditional methods. Third, by configuring unique data identifiers for each damage evaluation sub-item and establishing a multi-environment damage index table, orderly management and unified output processing of damage data are achieved, avoiding the problem of lacking a unified comparison standard between different test results. Fourth, by monitoring the rate of change of the comprehensive lifetime evaluation quantity and triggering a reverse adjustment process, a closed-loop control mechanism based on the overall degradation state of the coating is established, enabling the multi-environment load application process to adaptively adjust according to the actual degradation behavior of the coating, ensuring the stability and controllability of the evaluation process. Fifth, by combining the application of two types of load adjustment commands, flexible and diverse environmental load adjustment methods are provided, enabling the system to cope with different degradation rate anomalies, improving the applicability and robustness of the method. In addition, this step generates a comprehensive life assessment dataset, providing intuitive data support for subsequent life trend analysis and engineering applications. This allows the assessment results to be clearly displayed in the form of curves or tables, facilitating analysis and decision-making by engineering technicians.

[0040] S105. Based on the variation law of the comprehensive life evaluation quantity over time, analyze the multi-environment coupling degradation trend of the coating and complete the service life assessment of the coating. In this step, the central control unit reads the comprehensive life evaluation quantity dataset generated in step S104 and analyzes the variation law of the comprehensive life evaluation quantity over the test time. The variation curve of the comprehensive life evaluation quantity over time can intuitively reflect the overall degradation process of the coating under the multi-environment coupling effect. The slope of the curve reflects the changing trend of the coating degradation rate, and the inflection point of the curve reflects the stage characteristics of the coating degradation behavior. By performing mathematical analysis on the variation curve, key characteristic parameters of the coating degradation process can be extracted, such as the initial degradation rate, the accelerated degradation initiation time, and the failure time. The initial degradation rate reflects the degree of degradation of the coating in the early stage of the test. This parameter is related to the inherent properties of the coating material and the initial intensity of the environmental load. The accelerated degradation initiation time reflects the time node when the coating changes from the slow degradation stage to the rapid degradation stage. This parameter indicates that the internal microstructure of the coating has changed significantly, and the degradation mechanism has changed from surface damage to matrix damage. Failure time reflects the point in time when the coating reaches the failure threshold. When the comprehensive lifetime assessment value reaches the preset failure criterion, the coating is considered to have failed and can no longer provide effective protection. In practical applications, the failure criterion can be determined according to the specific application requirements and performance indicators of the coating. For example, it can be set that the coating is considered to have failed when the comprehensive lifetime assessment value exceeds a certain value, or when a key performance indicator drops to a certain percentage of its initial value.

[0041] After obtaining the aforementioned characteristic parameters, a life prediction model can be used to estimate the service life of the coating under actual service conditions. The basic idea of ​​the life prediction model is to establish an equivalent relationship between accelerated laboratory testing conditions and actual service conditions, converting the failure time measured in the laboratory into the service life under actual service conditions through an acceleration factor. The determination of the acceleration factor needs to comprehensively consider the differences between the laboratory environmental load and the actual service environmental load, as well as the consistency of the coating degradation mechanism under different load levels. In this embodiment, since the test process adopts a dynamic matching method based on equivalent load parameters, the laboratory environmental load and the actual service environmental load have good equivalence. Therefore, the acceleration factor mainly depends on the ratio of the intensity of the laboratory environmental load to the actual service environmental load. By reasonably determining the acceleration factor, the failure time measured in the laboratory can be converted into the service life under actual service conditions, thereby achieving a rapid assessment of the coating's service life. In some embodiments, the life prediction model can also consider the uncertainty of the coating degradation process, using probabilistic statistical methods to perform reliability analysis on the life prediction results, providing the confidence interval and reliability curve of the coating's service life, and providing a more comprehensive decision-making basis for engineering applications. The life assessment process implemented in this step completes the entire evaluation process from degradation data collection, damage assessment sub-item construction, comprehensive life assessment quantity generation to life trend analysis, and realizes rapid assessment of the service life of coatings under multi-environment coupling conditions.

[0042] The benefits of this step are as follows: First, by analyzing the variation of the comprehensive life assessment metrics over time, the overall degradation trend of the coating under the coupled effects of multiple environments is revealed, enabling the assessment results to reflect the stage-specific and nonlinear characteristics of the coating degradation process, thus improving the depth of understanding of coating degradation behavior. Second, by extracting key characteristic parameters of the coating degradation process, quantitative input data is provided for the life prediction model, giving the life prediction results clear physical meaning and traceability. Third, by establishing the equivalent relationship between accelerated laboratory testing conditions and actual service conditions, the conversion from laboratory test results to actual service life is realized, giving the evaluation method practical engineering application value. Fourth, by using probabilistic statistical methods for reliability analysis, the confidence interval and reliability curve of the coating's service life are given, providing more comprehensive information support for engineering decision-making. Furthermore, this step also outputs the comprehensive life assessment metric dataset in curve or tabular form, making the evaluation results visually appealing and facilitating analysis and comparison by engineering technicians.

[0043] In summary, the coating life assessment method provided in this application establishes a complete coating life evaluation system. This system uses equivalent load parameters as the control core, degradation response as the feedback basis, and comprehensive life evaluation quantity as the evaluation index. It realizes the transformation from static operating condition evaluation to dynamic degradation evaluation, significantly improves the ability of life assessment results to characterize the actual service degradation behavior of coatings, and provides reliable technical support for coating material performance optimization, selection decision-making, and life management.

[0044] This invention achieves separate channel acquisition and independent storage of degradation responses by setting up dedicated data acquisition channels for different environmental load modules. Each data buffer is bound with timestamp information to form traceable data records, ensuring the independence and traceability of degradation data under multiple environmental effects. Furthermore, by configuring unique data identifiers for each damage evaluation sub-item and establishing a multi-environment damage index table, this invention achieves orderly scheduling and unified output processing of damage data, avoiding the problem of lacking a unified comparison standard between different test results in traditional methods. Simultaneously, by normalizing the original damage values ​​and generating a comprehensive life evaluation quantity using a weighted summation method, a unified evaluation framework for different types of damage data is established, making the evaluation results highly comparable and of engineering reference value, solving the technical problems of large dispersion of evaluation results and difficulty in horizontal comparison in existing technologies.

[0045] This invention establishes a quantitative relationship between environmental factors and the physical effects of coatings by converting environmental parameters into equivalent action intensity parameters. This allows for comparative analysis of test results under different environmental conditions using unified load parameters. By periodically collecting degradation responses and generating time-series data, this invention achieves continuous tracking and dynamic evaluation of the coating degradation process. When the rate of change of the comprehensive lifetime evaluation quantity exceeds a preset threshold, a reverse adjustment process is automatically triggered. By adjusting the application sequence or duration of environmental loads, the multi-environment loading process remains within the target degradation rate range, ensuring the stability and controllability of the evaluation process. Furthermore, this method can be implemented on existing test platforms and conventional testing equipment without requiring additional complex hardware systems. It has good engineering applicability and scalability, providing stable and reliable technical support for coating performance optimization, material selection, and lifetime management, thus solving the technical problem of insufficient reliability in engineering applications in existing technologies.

[0046] In some embodiments, the coating lifetime assessment method provided in this application can also be applied to the performance comparison and evaluation of coating materials. In this application scenario, parallel tests can be conducted on coating samples prepared with different formulations and processes, using the same environmental load parameters and the same test procedures to obtain comprehensive lifetime evaluation data for each coating sample. By comparing and analyzing the change curves of the comprehensive lifetime evaluation of different coating samples, the durability performance of different coating materials can be intuitively evaluated, providing a quantitative basis for the selection of coating materials. In other embodiments, the method provided in this application can also be applied to the study of coating failure mechanisms. In this application scenario, by adjusting the application sequence and duration of environmental loads, the influence of different environmental factors on coating degradation behavior can be studied, the contribution of various environmental loads to the comprehensive lifetime evaluation can be analyzed, and the failure mechanism of coatings under multi-environment coupling can be revealed. In addition, this method can also be combined with microscopic characterization techniques to establish the correlation between macroscopic degradation response and microscopic structure evolution by performing microstructural analysis on coating samples before and after the test, thereby deepening the understanding of coating degradation mechanisms. Through the above-described extended applications, the method provided in this application can not only be used for rapid assessment of coating life, but also provide a powerful technical means for the design optimization of coating materials and the study of failure mechanisms.

[0047] In other embodiments, this application also provides a coating life assessment system, such as... Figure 4 As shown, the system includes a parameter modeling unit, a load matching unit, a load calibration unit, a damage synthesis unit, and a life assessment unit. The parameter modeling unit is configured to retrieve measured environmental parameters to construct a multi-environmental load model and generate environmental load parameters characterizing the intensity of various environmental physical actions. This unit's function corresponds to step S101 in the aforementioned method. The load matching unit is configured to generate control commands based on the environmental load parameters, and use these commands to adjust the operating parameters of each environmental module, ensuring that the composite environmental load applied in the experiment matches the environmental load parameters corresponding to the actual working conditions. This unit's function corresponds to step S102 in the aforementioned method. The load calibration unit is configured to periodically collect coating degradation data to obtain the degradation response, determine the stability of the load condition based on the rate of change of the degradation response, and generate calibration commands to dynamically correct the environmental load parameters when abnormalities occur. This unit's function corresponds to step S103 in the aforementioned method. The damage synthesis unit is configured to construct independent damage evaluation sub-items from the calibrated degradation response for each environment, integrate all damage evaluation sub-items according to preset synthesis rules to generate a comprehensive life assessment quantity, and generate a load adjustment command if the change in the comprehensive life assessment quantity exceeds the limit. This unit's function corresponds to step S104 in the aforementioned method. The life assessment unit is configured to analyze the degradation trend of the coating under multi-environment coupling based on the change law of the comprehensive life assessment quantity over time, and complete the service life assessment of the coating. The function of this unit corresponds to step S105 in the above method.

[0048] In some embodiments, see Figure 4 As shown, the parameter modeling unit includes a data acquisition module 401 and a parameter calculation module 402. The data acquisition module 401 collects environmental parameter data corresponding to the actual service conditions of the coating, including ambient temperature, ambient humidity, salt spray concentration, dust particle size distribution, and airflow velocity data. The parameter calculation module 402 generates environmental load parameters based on the collected environmental parameter data and the equivalent environmental load parameter calculation formula. The load matching unit includes an instruction generation module 403 and an instruction sending module 404. The instruction generation module 403 generates the operating parameter settings for each environmental module based on the environmental load parameters through a reverse solving process. The instruction sending module 404 sends the generated control instructions to each environmental module to control each environmental module to operate according to the set parameters. The load calibration unit includes a data acquisition module 405, a rate calculation module 406, and a calibration instruction generation module 407. The data acquisition module 405 periodically collects coating degradation data, obtaining degradation response data such as erosion amount, corrosion depth, adhesion changes, and surface morphology parameters. The rate calculation module 406 calculates the rate of change of the degradation response and compares it with a preset target range. The calibration instruction generation module 407 generates a calibration instruction to correct the environmental load parameters when the rate of change of the degradation response exceeds the target range.

[0049] In some embodiments, see Figure 4 As shown, the damage synthesis unit includes a standardization processing module 408, a damage indexing module 409, and an evaluation quantity calculation module 410. The standardization processing module 408 standardizes the original degradation response data and calculates the standardized damage value according to the standardized damage formula. The damage indexing module 409 assigns data identification codes to each damage evaluation sub-item, establishes a multi-environment damage index table, and schedules each damage evaluation sub-item according to the index table order. The evaluation quantity calculation module 410 reads the standardized damage value and weight coefficient of each damage evaluation sub-item and calculates the comprehensive life evaluation quantity according to the comprehensive damage weighted synthesis formula. The life assessment unit includes a trend analysis module 411 and a life prediction module 412. The trend analysis module 411 analyzes the change law of the comprehensive life evaluation quantity over time and extracts key characteristic parameters of the coating degradation process. The life prediction module 412 estimates the service life of the coating under actual service conditions based on the extracted characteristic parameters using a life prediction model. Through the collaborative work of the above units, the coating life assessment system can fully realize the coating life assessment method, providing an automated technical platform for the performance evaluation and life management of coating materials. The system features a clear structure, modular functionality, and ease of expansion and maintenance, enabling it to adapt to the evaluation needs of different types of coating materials and different service environments.

[0050] In other embodiments, this application also provides a computer-readable storage medium storing a computer program adapted to be loaded by a processor and executed by the coating life assessment method described above. The computer-readable storage medium can be a non-volatile storage medium such as a read-only memory, random access memory, disk, optical disk, or flash memory, or it can be a volatile storage medium. The computer program stored in the storage medium contains program code for implementing each step of the above method. When the computer program is loaded and executed by a processor, the processor performs operations such as calculating environmental load parameters, generating control instructions, collecting and processing degradation responses, constructing damage evaluation sub-items, calculating comprehensive life assessment quantities, and analyzing life trends according to the instructions in the program code, thereby achieving automated assessment of the coating service life. This computer-readable storage medium can be used alone or in conjunction with a computer device to provide software support for the implementation of the coating life assessment method.

[0051] In other embodiments, this application also provides a computer program product, which includes a computer program that, when executed by a processor, implements the above-described coating life assessment method. The computer program product can be provided in software form, and users can deploy it to a computer device by downloading, installing, or other means. The computer program in the computer program product contains program code for implementing each step of the above method. When the computer program is executed by a processor, the processor completes the entire operation process of coating life assessment according to the instructions of the program code. The advantages of the computer program product are its ease of distribution and deployment; users do not need to purchase dedicated hardware equipment, but only need to install the computer program on existing computer devices to achieve the coating life assessment function. Furthermore, the computer program product facilitates version updates and function expansion; developers can add new functions or fix known problems by releasing new versions of the computer program, and users can obtain the latest functions and performance by updating the computer program.

[0052] In other embodiments, this application also provides a computer device, such as... Figure 5As shown, the device includes a processor and a computer-readable storage medium. The processor is adapted to execute computer programs, and the computer-readable storage medium stores the computer programs. When the computer programs are executed by the processor, the aforementioned coating life assessment method is implemented. The computer device can be various types of computing devices such as personal computers, workstations, servers, and embedded systems. The processor can be a hardware unit with data processing capabilities, such as a central processing unit, microprocessor, or digital signal processor. The computer-readable storage medium can be a storage device such as memory, hard disk, or solid-state drive. When the computer device is working, the processor reads the computer program from the computer-readable storage medium and executes it to complete various operations for coating life assessment. The computer device can be connected to the test platform via a data interface to receive environmental parameter data and degradation response data collected by the test platform in real time. After processing and analysis, it generates control instructions and evaluation results, and sends the instructions to the central control unit of the test platform to achieve automated control of the test process. This computer device has the characteristics of strong versatility, easy integration, and convenient maintenance. It can seamlessly interface with existing test platforms, providing hardware support for the implementation of the coating life assessment method.

[0053] It should be understood that the sequence number of each step in the above embodiments does not imply the order of execution. The execution order of each process should be determined by its function and internal logic, and should not constitute any limitation on the implementation process of the embodiments of this application. The above embodiments are only used to illustrate the technical solutions of this application, and not to limit them. Although this application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. These modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of this application, and should all be included within the protection scope of this application.

Claims

1. A method for evaluating coating life, characterized in that, Includes the following processes: A multi-environmental load model is constructed by retrieving measured environmental parameters to generate environmental load parameters characterizing the intensity of various environmental physical actions; Based on the environmental load parameters, control instructions are generated, and the operating parameters of each environmental module are adjusted using the control instructions to make the composite environmental load applied in the test match the environmental load parameters corresponding to the actual working conditions. The degradation response is obtained by periodically collecting coating degradation data. The stability of the load condition is determined based on the rate of change of the degradation response. When the rate of change exceeds the preset range, a calibration command is generated to dynamically correct the environmental load parameters in order to obtain the calibrated degradation response. The calibrated degradation response is used to construct independent damage evaluation sub-items for each environment. All damage evaluation sub-items are then integrated according to a preset synthesis rule to generate a comprehensive lifetime evaluation quantity. Based on the changing pattern of the comprehensive life evaluation quantity over time, the degradation trend of the coating under multi-environment coupling is analyzed, and the service life assessment of the coating is completed.

2. The coating life assessment method as described in claim 1, characterized in that, Each environmental module is assigned a dedicated data acquisition channel, and degradation responses are collected through the acquisition channel. Each degradation response is stored in an independent data buffer and timestamped to generate record data with traceability attributes. The degradation response in the data buffer is read to calculate the rate of change. If the rate exceeds the preset range, a calibration command is output.

3. The coating life assessment method as described in claim 1, characterized in that, Each damage assessment sub-item is assigned a unique data identifier, and a multi-environment damage index table is established based on the data identifier. The damage assessment sub-items are scheduled in sequence according to the multi-environment damage index table and written into the comprehensive assessment cache in turn. All damage assessment sub-items in the comprehensive assessment cache are processed uniformly, and the dataset corresponding to the comprehensive life assessment quantity is output.

4. The coating life assessment method as described in claim 1, characterized in that, The degradation response includes four types of detection indicators: coating erosion amount, corrosion depth, adhesion parameters, and surface morphology parameters. Among them, coating erosion amount is determined by a mass change detection device, corrosion depth is determined by a surface measurement device, adhesion parameters are determined by a mechanical testing device, and surface morphology parameters are determined by a morphology detection device. The measured environmental parameters include five basic data: temperature, humidity, salt spray concentration, dust particle size, and airflow velocity.

5. The coating life assessment method as described in claim 1, characterized in that, The formula for calculating environmental load parameters is: ;in, For equivalent environmental load parameters, Salt spray concentration, For airflow velocity, The average particle size of the dust is... This is the salt spray intensity coefficient. This represents the intensity coefficient of sand and dust action.

6. The coating life assessment method as described in claim 1, characterized in that, The load adjustment command contains two types of control logic: one type is used to change the order in which various environmental loads are applied, and the other type is used to change the duration of each environmental load.

7. The coating life assessment method as described in claim 1, characterized in that, Constructing a comprehensive life assessment metric includes: converting the original damage values ​​corresponding to each damage assessment sub-item. Divide by the corresponding limit value Standardized damage values ​​were obtained. ; for each standardized damage value Configure dedicated weighting coefficients According to the formula Weighted sum of all standardized damage values, weighted result As a comprehensive life assessment metric.

8. The coating life assessment method as described in claim 1, characterized in that, Degradation responses are repeatedly collected at fixed intervals. All data collected in each iteration are aggregated to generate a degradation response time series. The degradation response time series is used to iteratively update the damage assessment sub-items constructed subsequently.

9. A coating life assessment system, characterized in that, include: The parameter modeling unit is configured to: retrieve measured environmental parameters to construct a multi-environmental load model and generate environmental load parameters characterizing the intensity of various environmental physical actions; The load matching unit is configured to generate control commands based on environmental load parameters, and use the control commands to control the operating parameters of each environmental module so that the composite environmental load applied in the test matches the environmental load parameters corresponding to the actual working conditions. The load calibration unit is configured to: periodically acquire coating degradation data to obtain degradation response, determine load condition stability based on the rate of change of degradation response, and generate calibration instructions to dynamically correct environmental load parameters in case of abnormality in order to obtain calibrated degradation response; The damage synthesis unit is configured to: construct independent damage evaluation sub-items from the calibrated degradation response in different environments, and integrate all damage evaluation sub-items according to preset synthesis rules to generate a comprehensive lifetime evaluation quantity; The life assessment unit is configured to: analyze the degradation trend of the coating under multi-environment coupling based on the change law of the comprehensive life assessment quantity over time, and complete the service life assessment of the coating.

10. A computer-readable storage medium, characterized in that, The computer-readable storage medium stores a computer program adapted to be loaded by a processor and executed as described in any one of claims 1 to 8.

11. A computer program product, characterized in that, The computer program product includes a computer program that, when executed by a processor, implements the coating life assessment method as described in any one of claims 1 to 8.

12. A computer device, characterized in that, include: Processor and computer-readable storage media; A processor, adapted to execute computer programs; A computer-readable storage medium storing a computer program that, when executed by the processor, implements the coating life assessment method as described in any one of claims 1 to 8.

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