A kind of antifreeze performance testing device

Abstract

The present invention provides an antifreeze performance test device, which belongs to the field of antifreeze test technology; the modules include: a standard determination module: determining the antifreeze performance test standard of the test material according to the target research object; an environmental configuration module: configuring the freezing test equipment according to the antifreeze performance test standard and the characteristics of the test material, performing freeze-thaw cycles on the test material and monitoring freeze-thaw parameter data; a test module: constructing the antifreeze performance evaluation index of the test material, and evaluating the performance score of the antifreeze performance evaluation index in each freeze-thaw cycle based on the freeze-thaw parameter data; an evaluation module: building a freeze-thaw evaluation model, and evaluating the antifreeze performance level of the test material based on the performance score of the antifreeze performance evaluation index in each freeze-thaw cycle. The device accurately evaluates the antifreeze performance of the material and improves the reliability of the result.

Description

Technical Field

[0001] The invention relates to the technical field of antifreeze testing, and in particular to an antifreeze performance testing device. Background Art

[0002] At present, with the global climate change, extreme weather occurs frequently. In low temperature environment, moisture enters the interior of the material, and the volume expands and contracts during the freeze-thaw cycle, causing changes in the microstructure inside the material, thereby affecting its mechanical properties, strength and durability. For example, building materials such as concrete, asphalt, and soil may crack, fall off, and powder after experiencing freeze-thaw cycles, and in severe cases may even cause structural collapse and failure. In order to improve test accuracy and efficiency, current research directions include improving the level of automation, integrating multiple functions for comprehensive performance evaluation, and adapting to the testing needs of new materials. In particular, in practical applications, how to adjust the test equipment to meet the special needs of different materials is an important research direction.

[0003] Therefore, the present invention proposes a device for testing antifreeze performance. Summary of the invention

[0004] The present invention provides an antifreeze performance testing device, which is used to comprehensively evaluate the antifreeze performance of materials through standard determination, environmental configuration, performance testing and evaluation modules, combined with data during freeze-thaw cycles, to provide a scientific antifreeze capacity evaluation and provide a basis for material performance optimization and engineering design.

[0005] In one aspect, the present invention provides an antifreeze performance testing device, comprising:

[0006] Standard determination module: Determine the antifreeze performance test standard of the test material according to the target research object;

[0007] Environmental configuration module: According to the antifreeze performance test standards and the characteristics of the test materials, configure the freezing test equipment, cycle the test materials through freeze-thaw cycles and monitor the freeze-thaw parameter data;

[0008] Testing module: constructing an antifreeze performance evaluation index for the test material, and evaluating the performance score of the antifreeze performance evaluation index in each freeze-thaw cycle based on freeze-thaw parameter data;

[0009] Evaluation module: build a freeze-thaw evaluation model, and evaluate the antifreeze performance level of the test material based on the performance score of the antifreeze performance evaluation index of each freeze-thaw cycle.

[0010] On the other hand, the standard determination module includes:

[0011] Object unit: Select the type of test material according to the target research object;

[0012] Key parameter determination unit: according to the goal of antifreeze performance test, determine the number of freeze-thaw cycles and the key test parameters of the test material in the freeze-thaw cycle;

[0013] Test Standard Drafting Unit: Determine the test standard for antifreeze performance in freeze-thaw cycles based on the international standards and industry specifications of the test materials.

[0014] On the other hand, the environment configuration module includes:

[0015] Sensor selection unit: select the corresponding sensor type according to the key test parameters of the test material;

[0016] Initial configuration unit: Determine the initial configuration parameters of the corresponding sensor type according to the antifreeze performance test standard and the characteristics of the test material, and configure the basic parameters of the freezing test equipment in combination with the number of freeze-thaw cycles;

[0017] A sensor configuration unit: if any sensor type can be configured in the freezing test device, a unique first number is configured in the freezing test device, a unique second number is configured for the sensor, and the sensor is configured in the freezing test device according to the corresponding relationship between the first number and the second number;

[0018] Instead, the test material is removed from the cryo-testing apparatus after each freeze-thaw cycle and measured using a sensor, the sensor is assigned a unique third number, and the test material is subjected to a control freeze-thaw test.

[0019] On the other hand, the environment configuration module further includes:

[0020] Sample processing unit: obtain samples, determine the sample size according to the test standard, and perform saturation treatment on the samples, wherein the saturation treatment is to make the sample moisture content close to the maximum moisture content;

[0021] The processed samples are divided into equal parts by mass, and the initial mass after the division is recorded to obtain multiple groups of test materials;

[0022] Start to perform freeze-thaw cycle on any group of test materials, and obtain freeze-thaw parameter data of each freeze-thaw test based on sensors.

[0023] On the other hand, the test module comprises:

[0024] Index determination unit: According to the research objectives of the antifreeze performance of the test material, the evaluation indicators are determined, including: dynamic elastic modulus index, shape index and quality index;

[0025] Parameter initialization unit: initialize the freeze-thaw parameter data of each freeze-thaw cycle to obtain the standard parameter data of the corresponding freeze-thaw cycle;

[0026] Quality evaluation unit: Determine the mass loss ratio after the corresponding cycle:

[0027] ;in, represents the mass loss ratio of the i-th freeze-thaw cycle, represents the initial mass, represents the remaining test material mass after the i-th freeze-thaw cycle;

[0028] Dynamic elastic modulus evaluation unit: According to the relative dynamic elastic modulus parameter in the standard parameter data, the dynamic elastic modulus loss ratio of the corresponding freeze-thaw cycle is obtained:

[0029] ;in, represents the loss ratio of dynamic elastic modulus in the i-th freeze-thaw cycle, represents the real modulus function of the test material in the i-th freeze-thaw cycle, represents the elasticity of the test material in the ith freeze-thaw cycle, represents the imaginary modulus function of the test material in the i-th freeze-thaw cycle, represents the complex modulus coefficient, represents the dot product, Indicates the standard preset density range of the test material. represents the initial stress amplitude of the test material, Represents the initial strain amplitude of the test material.

[0030] On the other hand, the test module further includes:

[0031] Shape evaluation unit: Scanning the surface image of the test material after the corresponding freeze-thaw cycle according to the image acquisition device to obtain a first image, gray-processing the first image to obtain a first gray-scale image, and gray-processing the initial image of the test material to obtain an original gray-scale image, and mapping the first gray-scale image and the original gray-scale image to the same standard coordinate system;

[0032] Extracting boundary points from the first grayscale image and the original grayscale image according to a boundary algorithm to obtain a first boundary and an original boundary, and performing volume comparison on the first boundary and the original boundary;

[0033] If the test material has a volume change after the corresponding freeze-thaw cycles, the volume difference is:

[0034] ;in, represents the volume difference change after the i-th freeze-thaw cycle, represents the initial volume of the test material, represents the temperature change after the i-th freeze-thaw cycle, The volumetric shrinkage coefficient of the test material is obtained according to a test material type-volume shrinkage coefficient mapping table;

[0035] Feature extraction is performed on the first grayscale image of the test material. If the extracted feature meets the crack feature, it is determined that the test material has cracks after the corresponding freeze-thaw cycle. All cracks of the test material are counted, and the depth and width of all cracks are measured using a laser device. The change in crack degree is:

[0036] ;in, represents the change degree of the test material after the i-th freeze-thaw cycle, represents the depth of the jth crack in the region, represents the width of the jth crack in the region, h represents that there are a total of h cracks in the test material after the i-th freeze-thaw cycle, represents the depth weight coefficient, Y represents the width weight coefficient, Represents the mean depth of cracks less than or equal to And less than or equal to the mean width of the crack The error analysis function is represents the error adjustment coefficient;

[0037] The shape loss ratio of the test material is obtained based on the estimated crack degree and volume difference in the first image:

[0038] ;in, represents the shape loss ratio of the i-th freeze-thaw cycle, represents the volume evaluation coefficient, Represents the crack assessment coefficient.

[0039] On the other hand, the test module further includes:

[0040] Performance score unit: According to the mass loss ratio, dynamic elastic modulus loss ratio, and shape loss ratio of the test material after the corresponding freeze-thaw cycle, the performance score of the antifreeze performance evaluation index in this freeze-thaw cycle is evaluated as follows:

[0041] ;in, represents the performance score of this freeze-thaw cycle, The weight coefficient representing the volume loss ratio, represents the weight coefficient of the loss of dynamic elastic modulus, Represents the weight coefficient of the shape loss ratio, wherein the weight coefficient is determined according to the expert database and satisfies , the corresponding relationship of the weight coefficients is saved in the evaluation index weight table.

[0042] On the other hand, the evaluation module comprises:

[0043] Model building unit: build a freeze-thaw evaluation model based on the evaluation index weight table and antifreeze performance evaluation index;

[0044] Evaluation unit: configure the freeze-thaw evaluation model in a real environment, count the performance scores of the test material's antifreeze performance in all freeze-thaw cycles, observe the changes in the scores under different freeze-thaw cycles, evaluate the stability of the test material after freeze-thaw cycles, analyze the rate of score decline, predict the test material's antifreeze ability in freeze-thaw cycles, and comprehensively evaluate the test material's antifreeze performance level based on stability and antifreeze ability.

[0045] Compared with the prior art, the present invention has the following beneficial effects:

[0046] The present invention provides an antifreeze performance testing device, which is used to comprehensively evaluate the antifreeze performance of materials through standard determination, environmental configuration, performance testing and evaluation modules, combined with data during freeze-thaw cycles, to provide a scientific antifreeze capacity evaluation and provide a basis for material performance optimization and engineering design. BRIEF DESCRIPTION OF THE DRAWINGS

[0047] In order to more clearly illustrate the technical solutions in the present invention or the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0048] Figure 1 It is a structural schematic diagram of an antifreeze performance testing device provided in an embodiment of the present invention. DETAILED DESCRIPTION

[0049] In order to make the purpose, technical solution and advantages of the present invention clearer, the technical solution of the present invention will be clearly and completely described below in conjunction with the drawings of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0050] Embodiment 1:

[0051] like Figure 1 As shown, an antifreeze performance testing device provided by an embodiment of the present invention comprises:

[0052] Standard determination module: Determine the antifreeze performance test standard of the test material according to the target research object;

[0053] Environmental configuration module: According to the antifreeze performance test standards and the characteristics of the test materials, configure the freezing test equipment, cycle the test materials through freeze-thaw cycles and monitor the freeze-thaw parameter data;

[0054] Testing module: constructing an antifreeze performance evaluation index for the test material, and evaluating the performance score of the antifreeze performance evaluation index in each freeze-thaw cycle based on freeze-thaw parameter data;

[0055] Evaluation module: build a freeze-thaw evaluation model, and evaluate the antifreeze performance level of the test material based on the performance score of the antifreeze performance evaluation index of each freeze-thaw cycle.

[0056] In this embodiment, the target research object is the test material, that is, the material that undergoes freeze-thaw cycle experiments to evaluate its antifreeze performance, which is used in the fields of construction, roads, infrastructure, etc.

[0057] In this embodiment, the test material refers to a specific material used to evaluate the antifreeze performance in a freeze-thaw test, such as concrete, mortar, brick, stone, etc.

[0058] In this embodiment, the antifreeze performance test standard is a specific requirement formulated to evaluate the long-term performance of materials in a freeze-thaw environment, such as reference standards such as "Test Method for Antifreeze Performance of Building Materials" (GB / T 50082) and "Test Method for Antifreeze Performance of Cement Concrete".

[0059] In this embodiment, properties such as temperature, humidity, number of freeze-thaw cycles, etc. are material standards.

[0060] In this embodiment, the freezing test equipment is a special equipment used to simulate and execute the freeze-thaw cycle process, and is intended to test the anti-freeze performance of materials (such as concrete, masonry, polymers, etc.) under different temperature conditions.

[0061] In this embodiment, the freeze-thaw cycle refers to repeatedly alternating the test material between low temperature and high temperature to simulate the freeze-thaw phenomenon that the material suffers in the natural environment.

[0062] In this embodiment, freeze-thaw parameter data refers to data used to describe and monitor various physical changes experienced by the material in each freezing and thawing cycle during the freeze-thaw test, such as temperature, humidity, number of freeze-thaw cycles, etc.

[0063] In this embodiment, the antifreeze performance evaluation index is a key parameter used to quantitatively and qualitatively evaluate the performance of the material during the freeze-thaw cycle, including: dynamic elastic modulus, shape and mass.

[0064] In this embodiment, the performance score is a quantitative score given to the performance of each antifreeze performance evaluation index after freeze-thaw cycles in the antifreeze performance test.

[0065] In this embodiment, the freeze-thaw evaluation model is a mathematical model used to comprehensively evaluate the antifreeze performance of a material during a freeze-thaw cycle.

[0066] In this embodiment, the antifreeze performance level refers to the ability of the material to maintain its physical and mechanical properties during freeze-thaw cycles, as well as the durability and reliability exhibited after multiple freeze-thaw cycles.

[0067] The working principle and beneficial effects of the above technical solution are: through standardized testing, precise environmental configuration, data monitoring and comprehensive evaluation, the antifreeze performance of materials in freeze-thaw cycles can be evaluated in real time, which can scientifically and systematically reflect the changes in material properties, provide reliable antifreeze evaluation results, and help optimize material selection and engineering design.

[0068] Embodiment 2:

[0069] Based on the above embodiment 1, the standard determination module includes:

[0070] Object unit: Select the type of test material according to the target research object;

[0071] Key parameter determination unit: according to the goal of antifreeze performance test, determine the number of freeze-thaw cycles and the key test parameters of the test material in the freeze-thaw cycle;

[0072] Test Standard Drafting Unit: Determine the test standard for antifreeze performance in freeze-thaw cycles based on the international standards and industry specifications of the test materials.

[0073] In this embodiment, the key parameters tested are indicators used to evaluate the durability and performance changes of the material during the freeze-thaw cycle, such as compressive strength, water absorption, volume change, etc.

[0074] In this embodiment, international standards and industry specifications provide unified guidelines and technical requirements. Different standards are applicable to different types of materials (such as concrete, stone, ceramics, etc.) and different test environments.

[0075] The working principle and beneficial effects of the above technical solution are: by selecting suitable test materials, determining key test parameters, and formulating scientific test standards, the accuracy and standardization of freeze-thaw cycle tests can be ensured, thereby systematically evaluating the antifreeze performance of materials and providing a scientific basis for material optimization and application.

[0076] Embodiment 3:

[0077] Based on the above embodiment 2, the environment configuration module includes:

[0078] Sensor selection unit: select the corresponding sensor type according to the key test parameters of the test material;

[0079] Initial configuration unit: Determine the initial configuration parameters of the corresponding sensor type according to the antifreeze performance test standard and the characteristics of the test material, and configure the basic parameters of the freezing test equipment in combination with the number of freeze-thaw cycles;

[0080] A sensor configuration unit: if any sensor type can be configured in the freezing test device, a unique first number is configured in the freezing test device, a unique second number is configured for the sensor, and the sensor is configured in the freezing test device according to the corresponding relationship between the first number and the second number;

[0081] Instead, the test material is removed from the cryo-testing apparatus after each freeze-thaw cycle and measured using a sensor, the sensor is assigned a unique third number, and the test material is subjected to a control freeze-thaw test.

[0082] In this embodiment, the sensor types include: temperature, pressure, humidity, strain and the like.

[0083] In this embodiment, the initial configuration parameters refer to various parameters set before the test begins based on the characteristics of the test material, the test standard and the sensor type to ensure the accuracy and reliability of the test, including: temperature, pressure, humidity, strain, etc.

[0084] In this embodiment, the basic parameters of the freezing test equipment include: temperature range, temperature change rate, number of freeze-thaw cycles, etc.

[0085] In this embodiment, the first number is used to identify the position of the sensor in the freezing test equipment.

[0086] In this embodiment, the second number is used to identify a unique identifier of a sensor that can be configured in the freezing test equipment.

[0087] In this embodiment, the third number is used to identify a unique identifier of a sensor that cannot be configured in the freezing test equipment.

[0088] The working principle and beneficial effect of the above technical solution are: by selecting appropriate sensors, configuring sensor parameters and numbers, accurate antifreeze performance monitoring and data recording can be achieved. By flexibly configuring sensors and refrigeration equipment, the accuracy and efficiency of the test can be ensured, providing a reliable basis for antifreeze performance evaluation.

[0089] Embodiment 4:

[0090] Based on the above embodiment 3, the environment configuration module further includes:

[0091] Sample processing unit: obtain samples, determine the sample size according to the test standard, and perform saturation treatment on the samples, wherein the saturation treatment is to make the sample moisture content close to the maximum moisture content;

[0092] The processed samples are divided into equal parts by mass, and the initial mass after the division is recorded to obtain multiple groups of test materials;

[0093] Start to perform freeze-thaw cycle on any group of test materials, and obtain freeze-thaw parameter data of each freeze-thaw test based on sensors.

[0094] In this embodiment, saturation treatment refers to making the water content of the sample reach a state close to its maximum water absorption capacity by a specific method.

[0095] In this embodiment, the sample moisture refers to the amount of moisture contained in the sample, which is usually expressed in mass percentage.

[0096] In this embodiment, the maximum moisture content refers to the maximum amount of moisture that the material can absorb.

[0097] In this embodiment, equal mass division refers to dividing the processed sample into multiple parts with equal mass, and each part has the same mass.

[0098] In this embodiment, the initial mass refers to the mass of each group after the sample is processed and divided.

[0099] The working principle and beneficial effects of the above technical solution are: through sample saturation treatment and equal mass division, the consistency and reliability of the test material in the freeze-thaw cycle are ensured. Combined with sensor data acquisition, the parameter changes during the freeze-thaw process are accurately recorded to provide accurate and repeatable test data for antifreeze performance evaluation.

[0100] Embodiment 5:

[0101] Based on the above embodiment 4, the test module includes:

[0102] Index determination unit: According to the research objectives of the antifreeze performance of the test material, the evaluation indicators are determined, including: dynamic elastic modulus index, shape index and quality index;

[0103] Parameter initialization unit: initialize the freeze-thaw parameter data of each freeze-thaw cycle to obtain the standard parameter data of the corresponding freeze-thaw cycle;

[0104] Quality evaluation unit: Determine the mass loss ratio after the corresponding cycle:

[0105] ;in, represents the mass loss ratio of the i-th freeze-thaw cycle, represents the initial mass, represents the remaining test material mass after the i-th freeze-thaw cycle;

[0106] Dynamic elastic modulus evaluation unit: According to the relative dynamic elastic modulus parameter in the standard parameter data, the dynamic elastic modulus loss ratio of the corresponding freeze-thaw cycle is obtained:

[0107] ;in, represents the loss ratio of dynamic elastic modulus in the i-th freeze-thaw cycle, represents the real modulus function of the test material in the i-th freeze-thaw cycle, represents the elasticity of the test material in the ith freeze-thaw cycle, represents the imaginary modulus function of the test material in the i-th freeze-thaw cycle, represents the complex modulus coefficient, represents the dot product, Indicates the standard preset density range of the test material. represents the initial stress amplitude of the test material, Represents the initial strain amplitude of the test material.

[0108] In this embodiment, the dynamic elastic modulus index is a physical quantity that describes the deformation and recovery ability of a material when subjected to force, and reflects the stiffness and elasticity of the material.

[0109] In this embodiment, the shape index is a parameter used to describe the change in material shape in material performance evaluation.

[0110] In this embodiment, the quality index refers to a quantitative standard used to measure the quality change of the test material after a series of freeze-thaw cycles.

[0111] In this embodiment, the initialization process refers to the process of preprocessing the experimental data to ensure that the experimental data of each subsequent freeze-thaw cycle has uniform standardized parameters.

[0112] In this embodiment, the mass loss ratio is an important indicator for measuring the degree of mass change of the test material caused by the freeze-thaw process in the freeze-thaw cycle experiment.

[0113] In this embodiment, standard parameter data refers to reference data used to evaluate the performance of the test material determined based on the preset experimental design and material properties during the freeze-thaw cycle experiment, including: mass, density, temperature, elasticity, etc.

[0114] In this embodiment, the relative dynamic elastic modulus parameter refers to the rate of change of the dynamic elastic modulus (real part and imaginary part) of the material after each freeze-thaw cycle.

[0115] In this embodiment, the dynamic elastic modulus loss ratio is an indicator used to measure the degree of change of the dynamic elastic modulus (including the real part and the imaginary part) of the material during the freeze-thaw cycle.

[0116] In this embodiment, the initial stress amplitude is the amplitude of the stress applied to the material before the freeze-thaw cycle.

[0117] In this embodiment, the initial strain amplitude refers to the amplitude of the strain experienced by the material in the initial loading stage in the freeze-thaw cycle experiment.

[0118] The working principle and beneficial effect of the above technical solution are: by initializing the freeze-thaw parameters and setting the mass and dynamic elastic modulus evaluation indicators, the mass loss and dynamic elastic modulus change after each freeze-thaw cycle can be accurately evaluated. This method provides a systematic evaluation standard for antifreeze performance research and ensures the accuracy and reliability of test data.

[0119] Embodiment 6:

[0120] Based on the above embodiment 5, the test module further includes:

[0121] Shape evaluation unit: Scanning the surface image of the test material after the corresponding freeze-thaw cycle according to the image acquisition device to obtain a first image, gray-processing the first image to obtain a first gray-scale image, and gray-processing the initial image of the test material to obtain an original gray-scale image, and mapping the first gray-scale image and the original gray-scale image to the same standard coordinate system;

[0122] Extracting boundary points from the first grayscale image and the original grayscale image according to a boundary algorithm to obtain a first boundary and an original boundary, and performing volume comparison on the first boundary and the original boundary;

[0123] If the test material has a volume change after the corresponding freeze-thaw cycles, the volume difference is:

[0124] ;in, represents the volume difference change after the i-th freeze-thaw cycle, represents the initial volume of the test material, represents the temperature change after the i-th freeze-thaw cycle, The volumetric shrinkage coefficient of the test material is obtained according to a test material type-volume shrinkage coefficient mapping table;

[0125] Feature extraction is performed on the first grayscale image of the test material. If the extracted feature meets the crack feature, it is determined that the test material has cracks after the corresponding freeze-thaw cycle. All cracks of the test material are counted, and the depth and width of all cracks are measured using a laser device. The change in crack degree is:

[0126] ;in, represents the change degree of the test material after the i-th freeze-thaw cycle, represents the depth of the jth crack in the region, represents the width of the jth crack in the region, h represents that the test material has a total of h cracks after the i-th freeze-thaw cycle, represents the depth weight coefficient, Y represents the width weight coefficient, Represents the mean depth of cracks less than or equal to And less than or equal to the mean width of the crack The error analysis function is represents the error adjustment coefficient;

[0127] The shape loss ratio of the test material is obtained based on the estimated crack degree and volume difference in the first image:

[0128] ;in, represents the shape loss ratio of the i-th freeze-thaw cycle, represents the volume evaluation coefficient, Represents the crack assessment coefficient.

[0129] In this embodiment, the image acquisition device is a device for scanning and recording the surface image of the test material and acquiring quantitative data on the surface changes of the material.

[0130] In this embodiment, the test material surface image refers to image data acquired by an image acquisition device and reflecting the surface morphology of the test material.

[0131] In this embodiment, the first image refers to a surface image of the test material obtained by an image acquisition device after a certain freeze-thaw cycle.

[0132] In this embodiment, grayscale processing is a process of converting a color image into a grayscale image in image processing, which is achieved by converting the color of each pixel (usually a combination of three channels: red, green, and blue) into a single grayscale value.

[0133] In this embodiment, the first grayscale image is an image obtained by grayscale processing an image of the surface of the test material taken after the freeze-thaw cycle.

[0134] In this embodiment, the original grayscale image refers to an initial image obtained after grayscale processing, that is, a surface image of the test material without undergoing any freeze-thaw cycle.

[0135] In this embodiment, the standard coordinate system is a reference frame for uniformly representing images, sizes, and shapes.

[0136] In this embodiment, the boundary algorithm is a technology for extracting the boundary of an object in an image. The purpose of boundary detection is to determine the boundary line between the object and the background in the image.

[0137] In this embodiment, the first boundary is a set of edge points on the surface of the test material extracted by applying a boundary detection algorithm to the first grayscale image.

[0138] In this embodiment, the original boundary refers to the edge of the surface contour before the test material has been subjected to any freeze-thaw cycles.

[0139] In this embodiment, feature extraction is a technique in image processing and computer vision, which is used to extract useful information and features from an image.

[0140] In this embodiment, the crack feature refers to various characteristic parameters extracted from the image and capable of reflecting the occurrence of cracks on the surface of the material.

[0141] The working principle and beneficial effects of the above technical solution are: through image acquisition, grayscale processing, boundary extraction, feature analysis and other methods, combined with volume difference and crack characteristics, the shape loss ratio of the test material after freeze-thaw cycles is accurately evaluated, providing a systematic evaluation standard for quantitative antifreeze performance.

[0142] Embodiment 7:

[0143] Based on the above embodiment 5, the test module further includes:

[0144] Performance score unit: According to the mass loss ratio, dynamic elastic modulus loss ratio, and shape loss ratio of the test material after the corresponding freeze-thaw cycle, the performance score of the antifreeze performance evaluation index in this freeze-thaw cycle is evaluated as follows:

[0145] ;in, represents the performance score of this freeze-thaw cycle, The weight coefficient representing the volume loss ratio, represents the weight coefficient of the loss of dynamic elastic modulus, Represents the weight coefficient of the shape loss ratio, wherein the weight coefficient is determined according to the expert database and satisfies , the corresponding relationship of the weight coefficients is saved in the evaluation index weight table.

[0146] In this embodiment, the evaluation index weight table is a table that stores weight coefficients corresponding to various evaluation indexes.

[0147] In this embodiment, the expert database refers to a database containing expert knowledge, experience and evaluation criteria.

[0148] In this embodiment, the weight coefficient refers to a coefficient used to measure the influence of various evaluation indicators (such as mass loss ratio, dynamic elastic modulus loss ratio, shape loss ratio) on the final performance score during the antifreeze performance evaluation process.

[0149] The working principle and beneficial effects of the above technical solution are: by combining the mass loss ratio, dynamic elastic modulus loss ratio and shape loss ratio, the weight coefficient is used to evaluate the antifreeze performance of the test material in the freeze-thaw cycle. The weight coefficient is determined by an expert database, thereby achieving a comprehensive quantitative evaluation of material performance.

[0150] Embodiment 8:

[0151] Based on the above embodiment 7, the evaluation module includes:

[0152] Model building unit: build a freeze-thaw evaluation model based on the evaluation index weight table and antifreeze performance evaluation index;

[0153] Evaluation unit: configure the freeze-thaw evaluation model in a real environment, count the performance scores of the test material's antifreeze performance in all freeze-thaw cycles, observe the changes in the scores under different freeze-thaw cycles, evaluate the stability of the test material after freeze-thaw cycles, analyze the rate of score decline, predict the test material's antifreeze ability in freeze-thaw cycles, and comprehensively evaluate the test material's antifreeze performance level based on stability and antifreeze ability.

[0154] In this embodiment, the real environment refers to an actual use environment or an actual operation environment.

[0155] In this example, stability refers to the ability of the test material to maintain its structure after a series of freeze-thaw cycles.

[0156] In this embodiment, the antifreeze ability refers to the ability of a material to maintain its function after experiencing freeze-thaw cycles.

[0157] The working principle and beneficial effects of the above technical solution are: by building a freeze-thaw evaluation model and applying it to a real environment, the antifreeze performance scores of the test materials under different freeze-thaw cycles are statistically analyzed, their stability and antifreeze ability are evaluated, and a comprehensive antifreeze performance prediction and evaluation is provided.

[0158] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A device for testing antifreeze performance, characterized in that: include: Standard determination module: Determine the antifreeze performance test standard of the test material according to the target research object; Environmental configuration module: According to the antifreeze performance test standards and the characteristics of the test materials, configure the freezing test equipment, cycle the test materials through freeze-thaw cycles and monitor the freeze-thaw parameter data; Testing module: constructing the antifreeze performance evaluation index of the test material, including: index determination unit: determining the evaluation index according to the antifreeze performance research target of the test material, including: dynamic elastic modulus index, shape index and quality index; and evaluating the performance score of the antifreeze performance evaluation index in each freeze-thaw cycle based on freeze-thaw parameter data; Evaluation module: building a freeze-thaw evaluation model, and evaluating the antifreeze performance level of the test material based on the performance score of the antifreeze performance evaluation index of each freeze-thaw cycle; Wherein, the test module includes: Parameter initialization unit: initialize the freeze-thaw parameter data of each freeze-thaw cycle to obtain the standard parameter data of the corresponding freeze-thaw cycle; Quality evaluation unit: Determine the mass loss ratio after the corresponding cycle: ;in, represents the mass loss ratio of the i-th freeze-thaw cycle, represents the initial mass, represents the remaining test material mass after the i-th freeze-thaw cycle; Dynamic elastic modulus evaluation unit: According to the relative dynamic elastic modulus parameter in the standard parameter data, the dynamic elastic modulus loss ratio of the corresponding freeze-thaw cycle is obtained: ;in, represents the loss ratio of dynamic elastic modulus in the i-th freeze-thaw cycle, represents the real modulus function of the test material in the i-th freeze-thaw cycle, represents the elasticity of the test material in the ith freeze-thaw cycle, represents the imaginary modulus function of the test material in the i-th freeze-thaw cycle, represents the complex modulus coefficient, represents the dot product, Indicates the standard preset density range of the test material. represents the initial stress amplitude of the test material, Indicates the initial strain amplitude of the test material; Wherein, the test module further includes: Shape evaluation unit: Scanning the surface image of the test material after the corresponding freeze-thaw cycle according to the image acquisition device to obtain a first image, gray-processing the first image to obtain a first gray-scale image, and gray-processing the initial image of the test material to obtain an original gray-scale image, and mapping the first gray-scale image and the original gray-scale image to the same standard coordinate system; Extracting boundary points from the first grayscale image and the original grayscale image according to a boundary algorithm to obtain a first boundary and an original boundary, and performing volume comparison on the first boundary and the original boundary; If the test material has a volume change after the corresponding freeze-thaw cycles, the volume difference is: ;in, represents the volume difference change after the i-th freeze-thaw cycle, represents the initial volume of the test material, represents the temperature change after the i-th freeze-thaw cycle, The volumetric shrinkage coefficient of the test material is obtained according to a test material type-volume shrinkage coefficient mapping table; Feature extraction is performed on the first grayscale image of the test material. If the extracted feature meets the crack feature, it is determined that the test material has cracks after the corresponding freeze-thaw cycle. All cracks of the test material are counted, and the depth and width of all cracks are measured using a laser device. The change in crack degree is: ;in, represents the change degree of the test material after the i-th freeze-thaw cycle, represents the depth of the jth crack in the region, represents the width of the jth crack in the region, h represents that the test material has a total of h cracks after the i-th freeze-thaw cycle, represents the depth weight coefficient, Y represents the width weight coefficient, Represents the mean depth of cracks less than or equal to And less than or equal to the mean width of the crack The error analysis function is represents the error adjustment coefficient; The shape loss ratio of the test material is obtained based on the estimated crack degree and volume difference in the first image: ;in, represents the shape loss ratio of the i-th freeze-thaw cycle, represents the volume evaluation coefficient, Represents the crack assessment coefficient.

2. The antifreeze performance testing device according to claim 1, characterized in that: The standard determination module comprises: Object unit: Select the type of test material according to the target research object; Key parameter determination unit: according to the goal of antifreeze performance test, determine the number of freeze-thaw cycles and the key test parameters of the test material in the freeze-thaw cycle; Test Standard Drafting Unit: Determine the test standard for antifreeze performance in freeze-thaw cycles based on the international standards and industry specifications of the test materials.

3. The antifreeze performance testing device according to claim 2, characterized in that: The environment configuration module includes: Sensor selection unit: select the corresponding sensor type according to the key test parameters of the test material; Initial configuration unit: Determine the initial configuration parameters of the corresponding sensor type according to the antifreeze performance test standard and the characteristics of the test material, and configure the basic parameters of the freezing test equipment in combination with the number of freeze-thaw cycles; A sensor configuration unit: if any sensor type can be configured in the freezing test device, a unique first number is configured in the freezing test device, a unique second number is configured for the sensor, and the sensor is configured in the freezing test device according to the corresponding relationship between the first number and the second number; Instead, the test material is removed from the cryo-testing apparatus after each freeze-thaw cycle and measured using a sensor, the sensor is assigned a unique third number, and the test material is subjected to a control freeze-thaw test.

4. The antifreeze performance testing device according to claim 3, characterized in that: The environment configuration module further includes: Sample processing unit: obtain samples, determine the sample size according to the test standard, and perform saturation treatment on the samples, wherein the saturation treatment is to make the sample moisture content close to the maximum moisture content; The processed samples are divided into equal parts by mass, and the initial mass after the division is recorded to obtain multiple groups of test materials; Start to perform freeze-thaw cycle on any group of test materials, and obtain freeze-thaw parameter data of each freeze-thaw test based on sensors.

5. The antifreeze performance testing device according to claim 1, characterized in that: The test module further includes: Performance score unit: According to the mass loss ratio, dynamic elastic modulus loss ratio, and shape loss ratio of the test material after the corresponding freeze-thaw cycle, the performance score of the antifreeze performance evaluation index in this freeze-thaw cycle is evaluated as follows: ;in, represents the performance score of this freeze-thaw cycle, The weight coefficient representing the volume loss ratio, represents the weight coefficient of the loss of dynamic elastic modulus, Represents the weight coefficient of the shape loss ratio, wherein the weight coefficient is determined according to the expert database and satisfies , the corresponding relationship of the weight coefficients is saved in the evaluation index weight table.

6. The antifreeze performance testing device according to claim 5, characterized in that: The evaluation module comprises: Model building unit: build a freeze-thaw evaluation model based on the evaluation index weight table and antifreeze performance evaluation index; Evaluation unit: configure the freeze-thaw evaluation model in a real environment, count the performance scores of the test material's antifreeze performance in all freeze-thaw cycles, observe the changes in the scores under different freeze-thaw cycles, evaluate the stability of the test material after freeze-thaw cycles, analyze the rate of score decline, predict the test material's antifreeze ability in freeze-thaw cycles, and comprehensively evaluate the test material's antifreeze performance level based on stability and antifreeze ability.

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