Stretching degree detection system for production of high-performance pre-stretched aluminum plate

Abstract

The invention discloses a tensile strength detection system for production of a high-performance pre-stretched aluminum plate, and relates to the technical field of detection analysis, and the system comprises a data acquisition module which is used for acquiring deformation data and stretching data of a pre-stretched aluminum plate sample in a tensile strength detection process; the data processing module is used for analyzing the deformation data to obtain a deformation influence factor and analyzing the stretching data to obtain a stretching influence factor; the data storage module is used for storing deformation influence factors and stretching influence factors to obtain a same-batch pre-stretching aluminum plate database; the comprehensive evaluation module is used for comparing the stretching degree evaluation coefficient with a preset stretching degree evaluation threshold value and judging whether the stretching degree of the pre-stretched aluminum plate meets the production requirement or not; and the adjusting module is used for adjusting the weight proportion in the comprehensive evaluation module. By detecting and comprehensively evaluating the tensile strength, the aluminum plate which does not meet the production requirement can be found in time, so that the product quality is improved, and the defective rate is reduced.

Description

Technical Field

[0001] The present invention relates to the field of detection and analysis technology, and more specifically, to a stretching detection system for high-performance pre-stretched aluminum plate production. Background Art

[0002] High-performance pre-stretched aluminum sheet is an aluminum alloy sheet with excellent properties such as high strength, high toughness, excellent corrosion resistance, and dimensional stability. Pre-stretching is typically performed during the aluminum sheet production process to effectively eliminate or reduce residual stress within the sheet, thereby improving the sheet's overall performance. The high-performance pre-stretched aluminum sheet production stretch testing system is used to monitor stretch data in real time, ensure product quality, and provide quality traceability.

[0003] Deficiencies in existing technologies: While existing technologies may only consider deformation or stretching as a single factor, this system's comprehensive assessment module combines deformation and stretching influencing factors with a weighted ratio for a comprehensive assessment, more comprehensively reflecting the stretchability of pre-stretched aluminum sheets and avoiding the one-sidedness of single-factor assessments. Existing technologies lack a systematic data analysis and adjustment mechanism. When the stretchability of aluminum sheets does not meet requirements, it is difficult to identify the root cause and implement targeted improvements. This system's adjustment module can analyze the database of pre-stretched aluminum sheets from the same batch through principal component analysis and adjust the weighted ratio, providing strong support for optimizing production. Existing technologies may lack this data-driven optimization capability.

[0004] In view of the above problems, the present invention proposes a solution. Summary of the Invention

[0005] In order to overcome the above-mentioned defects of the prior art, an embodiment of the present invention provides a high-performance stretching detection system for the production of pre-stretched aluminum plates, which solves the problems raised in the above-mentioned background technology.

[0006] To achieve the above object, the present invention provides the following technical solutions: A high-performance stretching degree detection system for pre-stretched aluminum plate production includes the following modules: data acquisition module, data processing module, data storage module, comprehensive evaluation module, and adjustment module. There are connections between the modules: A data acquisition module is used to perform random inspections on the same batch of pre-stretched aluminum plates to obtain pre-stretched aluminum plate samples, and to obtain deformation data and stretching data of the pre-stretched aluminum plate samples during the stretching degree detection process; A data processing module is used to pre-process the deformation data and the stretching data, analyze the pre-processed deformation data to obtain the deformation influence factor, and analyze the pre-processed stretching data to obtain the stretching influence factor; A data storage module is used to store deformation influencing factors and stretching influencing factors to obtain a database of pre-stretched aluminum plates of the same batch; The comprehensive evaluation module is used to comprehensively evaluate the deformation influencing factor and the stretching influencing factor in combination with the weight ratio to obtain the stretching evaluation coefficient, compare the stretching evaluation coefficient with the preset stretching evaluation threshold, and determine whether the stretching of the pre-stretched aluminum plate meets the production requirements; Adjust the module. If the tensile strength of the aluminum plate does not meet the production requirements, the same batch of aluminum plates in the data storage module will be adjusted. The principal component analysis of the secondary pre-stretched aluminum plate database was performed to adjust the weight ratio in the comprehensive evaluation module.

[0007] In a preferred embodiment, the deformation data includes elongation data and cross-sectional shrinkage data, and the tensile data includes tensile strength data and yield strength data.

[0008] In a preferred embodiment, the process of acquiring section shrinkage data is as follows: During the stretch test, the original diameter is measured with a caliper and the original cross-sectional area is calculated; Stretch until it breaks, remove the fracture site, use a caliper to measure the minimum diameter at the fracture, and calculate the minimum cross-sectional area of ​​the fracture; The reduction in the fracture cross-sectional area is calculated by taking the difference between the original cross-sectional area and the minimum fracture cross-sectional area. The cross-sectional shrinkage data is obtained by calculating the ratio of the reduction in the fracture cross-sectional area to the original cross-sectional area. The specific calculation formula is as follows: ; Where, Indicates the section shrinkage data, represents the original cross-sectional area, represents the reduction in fracture cross-sectional area, It represents the number of random inspections, and the average value of the cross-sectional shrinkage data of the pre-stretched aluminum plate samples is taken.

[0009] In a preferred embodiment, the tensile strength data acquisition process is as follows: During the tensile testing process, the force sensor of the tensile testing machine measures and records the magnitude of the tensile force in real time; The data of the increase in tensile force and fracture gauge length are recorded simultaneously to form a tensile force-elongation curve; When the tension-elongation curve reaches a peak and then begins to decline, the corresponding tension value is the maximum tension. The tensile strength data is obtained by calculating the ratio of the maximum tension to the original cross-sectional area. The specific calculation formula is as follows: ; Where, Indicates tensile strength data, represents the original cross-sectional area, represents the maximum tensile force of the pre-stretched aluminum plate sample, It represents the number of random inspections and the average value of the tensile strength data of the pre-stretched aluminum plate samples.

[0010] In a preferred embodiment, the deformation influencing factor is obtained by analyzing the pre-processed deformation data. The specific calculation formula is as follows: ; Where, represents the deformation influence factor, Indicates elongation data, Indicates the section shrinkage data, Indicates the scaling factor, which enlarges or reduces the calculation result as a whole.

[0011] In a preferred embodiment, the pre-processed stretching data is analyzed to obtain the stretching influence factor, and the specific calculation formula is as follows: ; Where, represents the stretching influence factor, Indicates tensile strength data, represents the yield strength data, Represents a natural constant that adjusts the output of the stretching influence factor.

[0012] In a preferred embodiment, the stretchability evaluation coefficient is specifically calculated as follows: ; Where, Expressed as the elongation evaluation coefficient, represents the deformation influence factor, represents the stretching influence factor, represents the influence weight of the deformation influencing factor, represents the influence weight of the stretching influence factor, where .

[0013] In a preferred embodiment, the stretchability evaluation coefficient is compared with a preset stretchability evaluation threshold to determine whether the stretchability of the pre-stretched aluminum plate meets the production requirements. The process is as follows: Comparing the stretchability evaluation coefficient with a preset stretchability evaluation threshold, if the stretchability evaluation coefficient is greater than or equal to the preset stretchability evaluation threshold, it is determined that the stretchability of the pre-stretched aluminum plate meets the production requirements; If the stretchability evaluation coefficient is less than the preset stretchability evaluation threshold, it is judged that the stretchability of the pre-stretched aluminum plate does not meet the production requirements and the system weight adjustment is required.

[0014] In a preferred embodiment, the principal component analysis process of the database of pre-stretched aluminum plates of the same batch in the data storage module is as follows: If the elongation of the aluminum plate does not meet the production requirements, the deformation influence factor and the elongation influence factor in the database of the same batch of pre-stretched aluminum plates are retrieved, and the deformation influence threshold and the elongation influence threshold are set according to the historical data. The two influence factors are compared with the corresponding thresholds respectively; If the deformation influence factor is less than the deformation influence threshold, and the stretching influence factor is greater than or equal to the stretching influence threshold, the deformation influence factor is used as the principal component in the database of pre-stretched aluminum plates of the same batch; If the deformation influence factor is greater than or equal to the deformation influence threshold, and the stretching influence factor is less than the stretching influence threshold, the stretching influence factor is used as the main component in the database of pre-stretched aluminum plates of the same batch; If the deformation influence factor is less than the deformation influence threshold, and the stretch influence factor is less than the stretch influence threshold, then the difference between the deformation influence threshold and the deformation influence factor, and the difference between the stretch influence threshold and the stretch influence factor are calculated and compared respectively; If the difference between the deformation influence threshold and the deformation influence factor is greater than the difference between the stretch influence threshold and the stretch influence factor, the deformation influence factor is used as the principal component in the database of pre-stretched aluminum plates of the same batch; If the difference between the deformation influence threshold and the deformation influence factor is less than or equal to the difference between the stretch influence threshold and the stretch influence factor, the stretch influence factor is used as the principal component in the database of pre-stretched aluminum plates of the same batch.

[0015] In a preferred embodiment, the process of adjusting the weight ratio in the comprehensive evaluation module is as follows: When the deformation influence factor is used as the main component in the database of pre-stretched aluminum plates of the same batch, the difference between the deformation influence threshold and the deformation influence factor is calculated. Combined with the influence weight of the deformation influence factor, the adjusted deformation factor adjustment weight is calculated. The calculation formula is as follows: ; Where, represents the deformation factor adjustment weight, represents the influence weight of the deformation influencing factor, represents the deformation influence threshold, represents the deformation influence factor, represents the adjustment factor; because , in adjusting At the same time, Make corresponding adjustments; When the stretching influence factor is used as the main component in the database of pre-stretched aluminum plates of the same batch, the difference between the stretching influence threshold and the stretching influence factor is calculated. Combined with the influence weight of the stretching influence factor, the adjusted stretching factor adjustment weight is calculated. The calculation formula is as follows: ; Where, Indicates the stretch factor adjustment weight, represents the influence weight of the stretching influence factor, Indicates the stretching influence threshold, represents the stretching influence factor, represents the adjustment factor; because , in adjusting At the same time, Make corresponding adjustments.

[0016] The technical effects and advantages of the present invention's high-performance stretching detection system for pre-stretched aluminum plate production are as follows: 1. The present invention can promptly identify aluminum sheets that do not meet production requirements by accurately detecting and comprehensively evaluating the tensile strength, facilitating the adoption of improvement measures, thereby improving product quality and reducing the defective rate. The adjustment module adjusts the weight ratio based on the data analysis results, which helps to gain a deeper understanding of the impact of various factors on the tensile strength, thereby guiding the optimization of the production process, improving production efficiency and the stability of product performance. The system analyzes and makes decisions based on actual test data, avoiding the blindness of production adjustments based on experience or guesswork, making production decisions more scientific and reasonable, and facilitating the implementation of refined management for enterprises.

[0017] This modular system design has good scalability and versatility. It can easily adjust parameters and expand functions according to different production needs and material properties. It is suitable for stretching detection and quality control in the production process of various types of pre-stretched aluminum plates. The calculated deformation influencing factors and stretching influencing factors are stored in order through the data storage module to form a database of pre-stretched aluminum plates from the same batch. This database has become an important data asset for the company. On the one hand, it can query the performance data of the current batch of aluminum plates in real time, which is convenient for production process monitoring and quality traceability; on the other hand, as data continues to accumulate, through longitudinal comparative analysis of historical data, the company can discover the changing trends of aluminum plate performance during the production process. For example, by analyzing the performance fluctuations of different batches of aluminum plates under the same production process, the key factors affecting product quality stability can be identified to provide data support for process improvement, and also provide a reference basis for new product development, production plan formulation, etc.

[0018] 2. The present invention uses a comprehensive evaluation module to comprehensively evaluate the deformation influencing factor and the stretching influencing factor in combination with the weight ratio to obtain a stretching evaluation coefficient, and compares it with the preset threshold to determine whether the stretching of the aluminum plate meets the production requirements. This evaluation method changes the limitations of traditional single indicator evaluation and comprehensively considers the performance of aluminum plates from multiple dimensions. For example, in the aerospace field, the strength and toughness of aluminum plates are extremely high. Through comprehensive evaluation, even if a certain performance indicator of the aluminum plate is slightly low, it can still be accurately judged whether it meets the needs of specific application scenarios by virtue of the advantages of other indicators. At the same time, enterprises can flexibly adjust weights and thresholds according to different product positioning and customer needs to achieve personalized quality assessment and ensure that product quality is accurately matched with market demand. When the stretching of the aluminum plate does not meet the standard, the adjustment module performs principal component analysis on the database to find the key factors affecting the stretching, and then adjusts the weight ratio in the comprehensive evaluation module. This data-driven adjustment mechanism realizes closed-loop management of the production process. For example, if analysis reveals that fluctuations in the elongation of a batch of aluminum sheets significantly impact the degree of stretch, the company can adjust the stretching process parameters, such as stretching speed and temperature, accordingly. Simultaneously, the weighting ratio can be adjusted to prioritize the elongation metric within the evaluation model, thereby improving the accuracy of subsequent production quality assessments. Through continuous optimization cycles, the system can adapt to various changes in the production process, driving continuous improvement in production processes, reducing production costs, and enhancing the company's market competitiveness. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 This is a structural schematic diagram of a stretching degree detection system for high-performance pre-stretched aluminum plate production according to the present invention. DETAILED DESCRIPTION

[0020] The following will provide a clear and complete description of the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. All other embodiments obtained by ordinary technicians in this field based on the embodiments of the present invention without making any creative efforts shall fall within the scope of protection of the present invention.

[0021] Example 1, Figure 1 The present invention provides a stretching degree detection system for high-performance pre-stretched aluminum plate production.

[0022] A data acquisition module is used to perform random inspections on the same batch of pre-stretched aluminum plates to obtain pre-stretched aluminum plate samples, and to obtain deformation data and stretching data of the pre-stretched aluminum plate samples during the stretching degree detection process; Determine the number of random inspections based on the number of pre-stretched aluminum sheets in the same batch to ensure that the pre-stretched aluminum sheet samples can represent the overall quality of the pre-stretched aluminum sheets in the same batch; The pre-stretched aluminum plate sample is processed according to the tensile test standard, the shape (circular cross-section) and size of the pre-stretched aluminum plate sample are adjusted, the pre-stretched aluminum plate sample is installed on the tensile testing machine, and the parameters and fixtures of the tensile testing machine are adjusted to ensure that the pre-stretched aluminum plate sample is subjected to uniform tensile force in the axial direction.

[0023] Deformation data includes elongation data and cross-sectional shrinkage data, and tensile data includes tensile strength data and yield strength data; During the tensile testing process, an extensometer is installed on the tensile testing machine. The function of the extensometer is to accurately measure the increase in the breaking gauge length and the original gauge length. The elongation data is obtained by calculating the ratio of the increase in the breaking gauge length to the original gauge length. The specific calculation formula is as follows: ; Where, Indicates elongation data, Indicates the original gauge length, represents the increase in the fracture gauge length, Indicates the number of random inspections, and the average value of the elongation data of the pre-stretched aluminum plate samples is taken; The larger the elongation data, the better the plasticity of the material, and the more it can withstand greater deformation without breaking; conversely, materials with smaller elongation data are more brittle and more likely to break during processing.

[0024] During the tensile test, the original diameter is measured with a caliper, the original cross-sectional area is calculated, and the material is stretched until it breaks. The fracture site is removed, and the minimum diameter at the fracture is measured with a caliper to calculate the minimum cross-sectional area of ​​the fracture. The difference between the calculated original cross-sectional area and the minimum cross-sectional area of ​​the fracture is calculated to obtain the reduction in the cross-sectional area of ​​the fracture. The cross-sectional shrinkage data is obtained by calculating the ratio of the reduction in the cross-sectional area of ​​the fracture to the original cross-sectional area. The specific calculation formula is as follows: ; Where, Indicates the section shrinkage data, represents the original cross-sectional area, represents the reduction in fracture cross-sectional area, Indicates the number of random inspections, and the average value of the cross-sectional shrinkage data of the pre-stretched aluminum plate samples is taken; Sectional shrinkage data is one of the important indicators of material plasticity. It reflects the plastic deformation ability of the material when it necks and breaks during stretching. The greater the section shrinkage rate, the better the plasticity of the material, and it can withstand a greater degree of plastic deformation without breaking.

[0025] During the tensile testing process, the force sensor of the tensile testing machine will measure and record the magnitude of the tensile force in real time, and simultaneously record the data of the increase in the tensile force and the fracture gauge length to form a tensile force-elongation curve. When the tensile force-elongation curve reaches a peak and then begins to decline, the corresponding tensile force value at this time is the maximum tensile force. The tensile strength data is obtained by calculating the ratio of the maximum tensile force to the original cross-sectional area. The specific calculation formula is as follows: ; Where, Indicates tensile strength data, represents the original cross-sectional area, represents the maximum tensile force of the pre-stretched aluminum plate sample, Indicates the number of random inspections, and the average value of the tensile strength data of the pre-stretched aluminum plate samples is taken; As the tensile force gradually increases, elastic and plastic deformations occur. When the tensile force reaches a certain maximum value, the material begins to break. The corresponding stress value at this time is the tensile strength. The tensile strength data is an important indicator of the ability to resist tensile damage.

[0026] When the tension-elongation curve appears in a horizontal or descending stage, the corresponding tension is the yield stress. The yield strength data is obtained by calculating the ratio of the yield stress to the original cross-sectional area. The specific calculation formula is as follows: ; Where, represents the yield strength data, represents the original cross-sectional area, represents the yield strength of the pre-tensioned aluminum plate specimen, Indicates the number of random inspections, and the average value of the tensile strength data of the pre-stretched aluminum plate samples is taken; Yield strength is the stress at which a material begins to undergo noticeable plastic deformation. Yield strength is a key indicator of material quality and performance. By testing a material's yield strength, we can determine whether it meets relevant standards and requirements, ensuring consistent and stable product quality.

[0027] It should be noted that the data acquisition module uses a scientific sampling method to select pre-stretched aluminum sheet samples to ensure that the samples are representative of the overall characteristics of the aluminum sheets from the same batch. During the data acquisition process, high-precision sensors are used to obtain real-time deformation data (such as elongation and cross-sectional reduction) and tensile data (tensile strength and yield strength) during the stretching process. For example, a grating displacement sensor is used to measure the elongation of the aluminum sheet with micron-level accuracy. Compared with traditional manual measurement, this significantly reduces data deviations caused by insufficient measurement tool accuracy and human reading errors. Accurate data provides a solid foundation for subsequent analysis, making the conclusions of the entire inspection system more credible and effectively avoiding quality misjudgments due to data distortion.

[0028] A data processing module is used to pre-process the deformation data and the stretching data, analyze the pre-processed deformation data to obtain the deformation influence factor, and analyze the pre-processed stretching data to obtain the stretching influence factor; The deformation data and tensile data of different batches of pre-stretched aluminum plate samples are normalized to their maximum and minimum values. Different types of data have different dimensions, and normalization can eliminate the dimensional effect. The deformation influencing factor is obtained by analyzing the preprocessed deformation data. The specific calculation formula is as follows: ; Where, represents the deformation influence factor, Indicates elongation data, Indicates the section shrinkage data, Indicates the scaling factor, which can magnify or reduce the calculation results as a whole; The tensile influence factor is obtained by analyzing the pre-processed tensile data. The specific calculation formula is as follows: ; Where, represents the stretching influence factor, Indicates tensile strength data, represents the yield strength data, Represents a natural constant that helps adjust the output of the stretching factor and maintains stability when performing exponential logarithm operations; It should be noted that the data processing module first performs pre-processing such as cleaning and standardization on the raw data to eliminate the influence of outliers and dimensional differences. For deformation data, the hierarchical analysis method is combined with fuzzy reasoning to comprehensively consider the influence of various factors on the deformation of aluminum plates, combining qualitative analysis with quantitative calculations to obtain deformation influencing factors that are more in line with the actual situation; for tensile data, principal component analysis is used to reduce the dimension, extract key influencing factors, and then combine regression analysis to build a mathematical model to obtain the tensile influencing factors. This processing method can not only explore the potential relationships between data, but also transform complex data into concise, intuitive and physically meaningful indicators, providing an effective basis for subsequent comprehensive evaluation and helping companies to gain a deeper understanding of the underlying causes of changes in aluminum plate performance.

[0029] A data storage module is used to store deformation influencing factors and stretching influencing factors to obtain a database of pre-stretched aluminum plates of the same batch; Select the MySQL database and design two tables, one for storing deformation influence factors and the other for storing stretching influence factors. Use Python to connect to the MySQL database, insert the deformation influence factors and stretching influence factors into the MySQL database for storage, and obtain the database of pre-stretched aluminum plates of the same batch.

[0030] It should be noted that the data storage module stores the calculated deformation and stretching influence factors in an orderly manner, forming a database of pre-stretched aluminum sheets from the same batch. This database has become a key data asset for the company. On the one hand, it can query the performance data of the current batch of aluminum sheets in real time, facilitating production process monitoring and quality traceability. On the other hand, as data continues to accumulate, through longitudinal comparative analysis of historical data, the company can identify changing trends in aluminum sheet performance during the production process. For example, by analyzing the performance fluctuations of different batches of aluminum sheets under the same production process, the key factors affecting product quality stability can be identified, providing data support for process improvements and a reference basis for new product development and production planning.

[0031] The comprehensive evaluation module is used to comprehensively evaluate the deformation influencing factor and the stretching influencing factor in combination with the weight ratio to obtain the stretching evaluation coefficient, compare the stretching evaluation coefficient with the preset stretching evaluation threshold, and determine whether the stretching of the pre-stretched aluminum plate meets the production requirements; By analyzing historical data and using machine learning algorithms to determine weights, a large amount of pre-stretched aluminum plate stretch test data was analyzed to find the correlation between the deformation influencing factor, the stretching influencing factor and the final stretch. The weights were determined based on the correlation, and the stretch evaluation coefficient was obtained through weighted summation. The specific calculation formula is as follows: ; Where, Expressed as the elongation evaluation coefficient, represents the deformation influence factor, represents the stretching influence factor, represents the influence weight of the deformation influencing factor, represents the influence weight of the stretching influence factor, where ; Compare the stretchability evaluation coefficient with the preset stretchability evaluation threshold. If the stretchability evaluation coefficient is greater than or equal to the preset stretchability evaluation threshold, it is determined that the stretchability of the pre-stretched aluminum plate meets the production requirements. If the stretchability evaluation coefficient is less than the preset stretchability evaluation threshold, it is determined that the stretchability of the pre-stretched aluminum plate does not meet the production requirements and the system weight adjustment is required. It should be noted that the comprehensive evaluation module comprehensively evaluates the deformation influencing factor and the stretching influencing factor in combination with the weight ratio to obtain the stretching evaluation coefficient, and compares it with the preset threshold to determine whether the stretching of the aluminum plate meets the production requirements. This evaluation method changes the limitations of traditional single indicator evaluation and comprehensively considers the performance of aluminum plates from multiple dimensions. For example, the aerospace field has extremely high requirements for the strength and toughness of aluminum plates. Through comprehensive evaluation, even if a certain performance indicator of the aluminum plate is slightly low, it can still accurately determine whether it meets the needs of specific application scenarios due to the advantages of other indicators. At the same time, companies can flexibly adjust weights and thresholds according to different product positioning and customer needs to achieve personalized quality assessment and ensure that product quality is accurately matched with market demand.

[0032] Adjustment module: If the tensile strength of the aluminum plate does not meet the production requirements, the principal component analysis is performed on the database of pre-stretched aluminum plates of the same batch in the data storage module, and the weight ratio in the comprehensive evaluation module is adjusted.

[0033] If the elongation of the aluminum plate does not meet the production requirements, the deformation influence factor and the elongation influence factor in the database of the same batch of pre-stretched aluminum plates are retrieved, and the deformation influence threshold and the elongation influence threshold are set according to the historical data. The two influence factors are compared with the corresponding thresholds respectively; If the deformation influence factor is less than the deformation influence threshold, and the stretch influence factor is greater than or equal to the stretch influence threshold, the deformation influence factor is used as the principal component in the database of pre-stretched aluminum plates of the same batch. The difference between the deformation influence threshold and the deformation influence factor is calculated. Combined with the influence weight of the deformation influence factor, the adjusted deformation factor adjustment weight is calculated. The calculation formula is as follows: ; Where, represents the deformation factor adjustment weight, represents the influence weight of the deformation influencing factor, represents the deformation influence threshold, represents the deformation influence factor, represents the adjustment factor; because , in adjusting At the same time, Make corresponding adjustments; If the deformation influence factor is greater than or equal to the deformation influence threshold, and the stretch influence factor is less than the stretch influence threshold, the stretch influence factor is used as the principal component in the database of pre-stretched aluminum plates of the same batch. The difference between the stretch influence threshold and the stretch influence factor is calculated. Combined with the influence weight of the stretch influence factor, the adjusted stretch factor adjustment weight is calculated. The calculation formula is as follows: ; Where, Indicates the stretch factor adjustment weight, represents the influence weight of the stretching influence factor, Indicates the stretching influence threshold, represents the stretching influence factor, represents the adjustment factor; because , in adjusting At the same time, Make corresponding adjustments; If the deformation influence factor is less than the deformation influence threshold, and the stretch influence factor is less than the stretch influence threshold, then calculate the difference between the deformation influence threshold and the deformation influence factor, and the difference between the stretch influence threshold and the stretch influence factor, and compare the difference between the deformation influence threshold and the deformation influence factor, and the difference between the stretch influence threshold and the stretch influence factor; If the difference between the deformation influence threshold and the deformation influence factor is greater than the difference between the stretch influence threshold and the stretch influence factor, the deformation influence factor is used as the principal component in the database of pre-stretched aluminum plates of the same batch and is adjusted according to the deformation factor adjustment weight formula; If the difference between the deformation influence threshold and the deformation influence factor is less than or equal to the difference between the stretch influence threshold and the stretch influence factor, the stretch influence factor is used as the principal component in the database of pre-stretched aluminum plates of the same batch and is adjusted according to the stretch factor adjustment weight formula.

[0034] The above formulas are all dimensionless and numerical calculations. The formulas are obtained by collecting a large amount of data and performing software simulation to obtain the most recent real situation. The preset parameters in the formulas are set by technicians in this field according to actual conditions.

[0035] The above embodiments may be implemented in whole or in part through software, hardware, firmware, or any other combination thereof. When implemented using software, the above embodiments may be implemented in whole or in part in the form of a computer program product.

[0036] Those skilled in the art will appreciate that the modules and algorithm steps of each example described in conjunction with the embodiments disclosed herein can be implemented in electronic hardware, or a combination of computer software and electronic hardware. Whether these functions are performed in hardware or software depends on the specific application and design constraints of the technical solution. Professional and technical personnel can use different methods to implement the described functions for each specific application, but such implementation should not be considered beyond the scope of this application.

[0037] In addition, each functional module in each embodiment of the present application may be integrated into one processing module, or each module may exist physically separately, or two or more modules may be integrated into one module.

[0038] The above description is merely a specific embodiment of the present application, but the scope of protection of the present application is not limited thereto. Any changes or substitutions that can be easily conceived by a person skilled in the art within the technical scope disclosed in this application should be included in the scope of protection of this application. Therefore, the scope of protection of this application should be based on the scope of protection of the claims.

[0039] Finally: The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A high-performance pre-stretched aluminum plate production stretch detection system, characterized in that: It includes the following modules: data acquisition module, data processing module, data storage module, comprehensive evaluation module, adjustment module, and there are connections between modules: A data acquisition module is used to perform random inspections on the same batch of pre-stretched aluminum plates to obtain pre-stretched aluminum plate samples, and to obtain deformation data and stretching data of the pre-stretched aluminum plate samples during the stretching degree detection process; A data processing module is used to pre-process the deformation data and the stretching data, analyze the pre-processed deformation data to obtain the deformation influence factor, and analyze the pre-processed stretching data to obtain the stretching influence factor; A data storage module is used to store deformation influencing factors and stretching influencing factors to obtain a database of pre-stretched aluminum plates of the same batch; The comprehensive evaluation module is used to comprehensively evaluate the deformation influencing factor and the stretching influencing factor in combination with the weight ratio to obtain the stretching evaluation coefficient, compare the stretching evaluation coefficient with the preset stretching evaluation threshold, and determine whether the stretching of the pre-stretched aluminum plate meets the production requirements; Adjust the module. If the tensile strength of the aluminum plate does not meet the production requirements, the same batch of aluminum plates in the data storage module will be adjusted. The principal component analysis of the secondary pre-stretched aluminum plate database was performed to adjust the weight ratio in the comprehensive evaluation module.

2. A high-performance pre-stretched aluminum plate production stretch detection system according to claim 1, characterized in that: The deformation data includes elongation data and cross-sectional shrinkage data, and the tensile data includes tensile strength data and yield strength data.

3. A high-performance pre-stretched aluminum plate production stretch detection system according to claim 2, characterized in that: The process of acquiring section shrinkage data is as follows: During the stretch test, the original diameter is measured with a caliper and the original cross-sectional area is calculated; Stretch until it breaks, remove the fracture site, use a caliper to measure the minimum diameter at the fracture, and calculate the minimum cross-sectional area of ​​the fracture; The reduction in the fracture cross-sectional area is calculated by taking the difference between the original cross-sectional area and the minimum fracture cross-sectional area. The cross-sectional shrinkage data is obtained by calculating the ratio of the reduction in the fracture cross-sectional area to the original cross-sectional area. The specific calculation formula is as follows: ； Where, Indicates the section shrinkage data, represents the original cross-sectional area, represents the reduction in fracture cross-sectional area, It represents the number of random inspections, and the average value of the cross-sectional shrinkage data of the pre-stretched aluminum plate samples is taken.

4. A high-performance pre-stretched aluminum plate production stretch detection system according to claim 3, characterized in that: The process of obtaining tensile strength data is as follows: During the tensile testing process, the force sensor of the tensile testing machine measures and records the magnitude of the tensile force in real time; The data of the increase in tensile force and fracture gauge length are recorded simultaneously to form a tensile force-elongation curve; When the tension-elongation curve reaches a peak and then begins to decline, the corresponding tension value is the maximum tension. The tensile strength data is obtained by calculating the ratio of the maximum tension to the original cross-sectional area. The specific calculation formula is as follows: ； Where, Indicates tensile strength data, represents the original cross-sectional area, represents the maximum tensile force of the pre-stretched aluminum plate sample, It represents the number of random inspections and the average value of the tensile strength data of the pre-stretched aluminum plate samples.

5. A high-performance pre-stretched aluminum plate production stretch detection system according to claim 4, characterized in that: The deformation influencing factor is obtained by analyzing the preprocessed deformation data. The specific calculation formula is as follows: ； Where, represents the deformation influence factor, Indicates elongation data, Indicates the section shrinkage data, Indicates the scaling factor, which enlarges or reduces the calculation result as a whole.

6. A high-performance pre-stretched aluminum plate production stretch detection system according to claim 5, characterized in that: The tensile influence factor is obtained by analyzing the pre-processed tensile data. The specific calculation formula is as follows: ； Where, represents the stretching influence factor, Indicates tensile strength data, represents the yield strength data, Represents a natural constant that adjusts the output of the stretching influence factor.

7. A high-performance pre-stretched aluminum plate production stretch detection system according to claim 6, characterized in that: The specific calculation formula of the stretch evaluation coefficient is as follows: ； Where, Expressed as the elongation evaluation coefficient, represents the deformation influence factor, represents the stretching influence factor, represents the influence weight of the deformation influencing factor, Represents the influence weight of the stretching influence factor, where .

8. The high-performance pre-stretched aluminum plate production stretch detection system according to claim 7, characterized in that: The stretch evaluation coefficient is compared with the preset stretch evaluation threshold to determine whether the stretch of the pre-stretched aluminum plate meets the production requirements. The process is as follows: Comparing the stretchability evaluation coefficient with a preset stretchability evaluation threshold, if the stretchability evaluation coefficient is greater than or equal to the preset stretchability evaluation threshold, it is determined that the stretchability of the pre-stretched aluminum plate meets the production requirements; If the stretchability evaluation coefficient is less than the preset stretchability evaluation threshold, it is judged that the stretchability of the pre-stretched aluminum plate does not meet the production requirements and the system weight adjustment is required.

9. A high-performance pre-stretched aluminum plate production stretch detection system according to claim 8, characterized in that: The principal component analysis process of the same batch of pre-stretched aluminum plate database in the data storage module is as follows: If the elongation of the aluminum plate does not meet the production requirements, the deformation influence factor and the elongation influence factor in the database of the same batch of pre-stretched aluminum plates are retrieved, and the deformation influence threshold and the elongation influence threshold are set according to the historical data. The two influence factors are compared with the corresponding thresholds respectively; If the deformation influence factor is less than the deformation influence threshold, and the stretching influence factor is greater than or equal to the stretching influence threshold, the deformation influence factor is used as the principal component in the database of pre-stretched aluminum plates of the same batch; If the deformation influence factor is greater than or equal to the deformation influence threshold, and the stretching influence factor is less than the stretching influence threshold, the stretching influence factor is used as the main component in the database of pre-stretched aluminum plates of the same batch; If the deformation influence factor is less than the deformation influence threshold, and the stretch influence factor is less than the stretch influence threshold, then the difference between the deformation influence threshold and the deformation influence factor, and the difference between the stretch influence threshold and the stretch influence factor are calculated and compared respectively; If the difference between the deformation influence threshold and the deformation influence factor is greater than the difference between the stretch influence threshold and the stretch influence factor, the deformation influence factor is used as the principal component in the database of pre-stretched aluminum plates of the same batch; If the difference between the deformation influence threshold and the deformation influence factor is less than or equal to the difference between the stretch influence threshold and the stretch influence factor, the stretch influence factor is used as the principal component in the database of pre-stretched aluminum plates of the same batch.

10. A high-performance pre-stretched aluminum plate production stretch detection system according to claim 9, characterized in that: The process of adjusting the weight ratio in the comprehensive evaluation module is as follows: When the deformation influence factor is used as the main component in the database of pre-stretched aluminum plates of the same batch, the difference between the deformation influence threshold and the deformation influence factor is calculated. Combined with the influence weight of the deformation influence factor, the adjusted deformation factor adjustment weight is calculated. The calculation formula is as follows: ； Where, represents the deformation factor adjustment weight, represents the influence weight of the deformation influencing factor, represents the deformation influence threshold, represents the deformation influence factor, represents the adjustment factor; because , in adjusting At the same time, Make corresponding adjustments; When the stretching influence factor is used as the main component in the database of pre-stretched aluminum plates of the same batch, the difference between the stretching influence threshold and the stretching influence factor is calculated. Combined with the influence weight of the stretching influence factor, the adjusted stretching factor adjustment weight is calculated. The calculation formula is as follows: ； Where, Indicates the stretch factor adjustment weight, Indicates the influence weight of the stretching influence factor, Indicates the stretching influence threshold, represents the stretching influence factor, represents the adjustment factor; because , in adjusting At the same time, Make corresponding adjustments.

Images