Estimation apparatus and estimation program

Abstract

To obtain an estimation apparatus and an estimation program capable of estimating a degree of deterioration of a polysulfide-based sealant with higher accuracy than conventional techniques.SOLUTION: An estimation apparatus 10 includes: an acquisition unit 11A that acquires values of two types of items being leading items that are items for which changes are confirmed during a course of deterioration, and lagging items that are items for which changes are confirmed at a time point after deterioration, through prior experiments, for a polysulfide-based sealant to be estimated; and an estimation unit 11B that estimates a degree of deterioration of the sealant by using the acquired values of the two types of items.SELECTED DRAWING: Figure 2

Description

[Technical Field]

[0001] The present invention relates to an estimation device and an estimation program. [Background technology]

[0002] Polysulfide sealants are primarily organic materials, and therefore are subject to deterioration due to factors such as ultraviolet rays, rain, and heat. Currently, there are no standards or guidelines for evaluating this deterioration, and each company selects and evaluates several types of physical properties such as tensile strength, gloss, and color measurement values. However, the deterioration mechanism is complex, and there is no systematization of which evaluation items to look at and how to make judgments when predicting the deterioration and remaining life of sealants.

[0003] Conventionally, the following techniques have been available as techniques that can be applied to evaluate the deterioration of sealing materials.

[0004] Patent Document 1 discloses a method for assessing the deterioration of urethane sealants, which aims to provide a method for early assessment of the deterioration of sealants between exterior walls in building exterior joints when no abnormalities are found in a visual inspection, and which also makes it possible to estimate the remaining lifespan of urethane sealants, thereby providing important information for creating maintenance plans for buildings.

[0005] This deterioration evaluation method is characterized by measuring the amount of urethane component eluted from the sealant and the amount of plasticizer.

[0006] Furthermore, Patent Document 2 discloses a method for diagnosing joint deterioration that aims to predict the lifespan of an irregular seal from its condition and determine the timing for repair.

[0007] This deterioration diagnosis method is characterized by changing and predetermining the timing for repairing the joint depending on the depth of the irregular seal, and determining the timing for repairing the joint depending on the depth of the irregular seal.

[0008] Furthermore, Patent Document 3 discloses a method for diagnosing an irregular sealant, which aims to accurately diagnose the deterioration state of an irregular sealant filled between exterior wall materials without destroying the irregular sealant.

[0009] This diagnostic method is a method for diagnosing the deterioration state of an irregular sealant filled between exterior wall materials of a building, and includes an imaging step of imaging the surfaces of the exterior wall materials on both sides of the irregular sealant and the surface of the irregular sealant, an extraction step of extracting an image corresponding to the surface of the irregular sealant from the image captured in the imaging step, and a binarization step of binarizing the image of the irregular sealant extracted in the extraction step so that cracks and wrinkles in the irregular sealant can be identified from the image of the irregular sealant.The diagnostic method also includes a feature calculation step of calculating, from the image of the irregular sealant binarized in the binarization step, parameters characteristic of cracks and wrinkles in the irregular sealant as feature amounts, and a diagnostic step of diagnosing the deterioration state of the irregular sealant based on the feature amounts calculated in the feature calculation step. [Prior art documents] [Patent documents]

[0010] [Patent Document 1] Japanese Patent Application Laid-Open No. 2004-137383 [Patent Document 2] Japanese Patent Application Laid-Open No. 2011-231483 [Patent Document 3] Japanese Patent Application Publication No. 2018-173385 Summary of the Invention [Problem to be solved by the invention]

[0011] However, as a result of careful investigation by the inventors of the present invention, it was found that two types of items are involved in the deterioration of sealants: leading items, which are items whose changes are confirmed during the deterioration process, and lagging items, which are items whose changes are confirmed after the deterioration has occurred.

[0012] However, the techniques disclosed in the above Patent Documents 1 to 3 do not take into consideration the above two items, and therefore have the problem that they are not necessarily able to accurately estimate the degree of deterioration or lifespan. Therefore, there has been a problem in that it is not possible to adequately predict the deterioration and remaining lifespan of polysulfide-based sealants using a linear combination equation based on multiple chemical analysis values ​​and physical measurement values.

[0013] The present disclosure has been made in consideration of the above circumstances, and aims to provide an estimation device and estimation program that can estimate the degree of deterioration of polysulfide-based sealants more accurately than conventional techniques. [Means for solving the problem]

[0014] In order to achieve the above-mentioned object, the estimation device of the present invention comprises an acquisition unit that acquires values ​​of two types of items for the sealing material to be estimated, which is a polysulfide-based sealing material, namely, leading items, which are items for which changes have been confirmed in prior experiments during deterioration, and lagging items, which are items for which changes have been confirmed after deterioration, and an estimation unit that estimates the degree of deterioration of the sealing material using the acquired values ​​of the two types of items. [Effects of the Invention]

[0015] According to the present invention, it is possible to obtain an effect that the degree of deterioration of a polysulfide-based sealant can be estimated with higher accuracy. [Brief explanation of the drawings]

[0016] [Figure 1] FIG. 2 is a block diagram illustrating an example of a hardware configuration of the estimation device according to the embodiment. [Figure 2] FIG. 2 is a block diagram illustrating an example of a functional configuration of the estimation device according to the embodiment. [Figure 3] FIG. 2 is a schematic diagram illustrating an example of a configuration of an estimated information database according to the embodiment. [Figure 4] 10 is a flowchart illustrating an example of an estimation process according to the embodiment. [Figure 5] FIG. 10 is a front view showing an example of a configuration of an initial information input screen according to the embodiment. [Figure 6] FIG. 10 is a front view showing an example of the configuration of an estimation result display screen according to the embodiment. DETAILED DESCRIPTION OF THE INVENTION

[0017] DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings.

[0018] First, the configuration of an estimation device 10 according to this embodiment will be described with reference to Fig. 1. Fig. 1 is a block diagram showing an example of the hardware configuration of the estimation device 10 according to this embodiment. Examples of the estimation device 10 include information processing devices such as a personal computer and a server computer.

[0019] 1, an estimation device 10 according to this embodiment includes a CPU (Central Processing Unit) 11 as a processor, a memory 12 as a temporary storage area, a non-volatile storage unit 13, an input unit 14 such as a keyboard and a mouse, a display unit 15 such as a liquid crystal display, a medium read / write device (R / W) 16, and a communication interface (I / F) unit 18. The CPU 11, memory 12, storage unit 13, input unit 14, display unit 15, medium read / write device 16, and communication I / F unit 18 are connected to one another via a bus B. The medium read / write device 16 reads information written in a recording medium 17 and writes information to the recording medium 17.

[0020] The storage unit 13 is realized by an HDD (Hard Disk Drive), an SSD (Solid State Drive), a flash memory, or the like. An estimation program 13A is stored in the storage unit 13 as a storage medium. The estimation program 13A is stored (installed) in the storage unit 13 when a recording medium 17 on which the program 13A is written is set in the medium reading and writing device 16 and the medium reading and writing device 16 reads the program 13A from the recording medium 17. The CPU 11 reads the estimation program 13A from the storage unit 13 as appropriate, expands it in the memory 12, and sequentially executes the processes of the program 13A.

[0021] Furthermore, an estimated information database 13B is stored in the storage unit 13. The estimated information database 13B will be described in detail later.

[0022] Next, the functional configuration of the estimation device 10 according to this embodiment will be described with reference to Fig. 2. Fig. 2 is a block diagram showing an example of the functional configuration of the estimation device 10 according to this embodiment.

[0023] 2, the estimation device 10 according to this embodiment includes an acquisition unit 11A, an estimation unit 11B, and a presentation unit 11C. The CPU 11 of the estimation device 10 executes an estimation program 13A, thereby functioning as the acquisition unit 11A, the estimation unit 11B, and the presentation unit 11C.

[0024] In this embodiment, a polysulfide-based sealant is used as the sealant (hereinafter, simply referred to as a sealant). The acquisition unit 11A according to this embodiment acquires values ​​of two types of items related to the polysulfide-based sealant to be estimated: leading items, which are items whose changes have been confirmed during deterioration through prior experiments, and lagging items, which are items whose changes have been confirmed after deterioration. Note that the method according to this embodiment can also be applied to sealants with properties similar to polysulfide-based sealants.

[0025] The estimation unit 11B according to this embodiment estimates the deterioration level of the sealing material using the values ​​of the two types of items acquired by the acquisition unit 11A. The estimation unit 11B also estimates the remaining life of the sealing material. The presentation unit 11C according to this embodiment presents information indicating the estimation result by the estimation unit 11B (in this embodiment, presentation is made by displaying on the display unit 15).

[0026] The equations for estimating the deterioration level and remaining life will be described. The estimation unit 11B according to this embodiment estimates the deterioration level g(x) of the sealing material using equation (1). The equation (1) and related equations (2) and (3) are shown below.

[0027]

number

number

[0028] As mentioned above, it was found that two types of items are involved in the deterioration of sealants: leading items, which are items whose changes were confirmed during the deterioration process, and lagging items, which are items whose changes were confirmed after the deterioration.

[0029] In this embodiment, the items that were confirmed to have changed during the degradation process (200 hours after accelerated degradation using triple-power xenon weather meter irradiation) are referred to as "leading items," and the items that were confirmed to have changed after the degradation process (1000 hours after the same process) are referred to as "lagging items." In this embodiment, these two items are used for life prediction. Items that did not change much are referred to as "items that are difficult to change" and are not used for life prediction. In this embodiment, the carbon content, sulfur content, calcium content, and gloss are all used as leading items, and the ultraviolet absorber is used as a lagging item. The items that are difficult to change are Young's modulus, tensile strength, 50% modulus, plasticizer content, and carbonyl groups.

[0030] The type of item i and the weighting coefficients a and b in equation (1) will be explained below. First, the type of item i will be explained.

[0031] [About the type of item i] Table 1 shows an example of the average values ​​of measured values ​​obtained by the inventors in experiments on polysulfide sealants, broken down by item and by stage of degradation (three stages: before degradation, during degradation, and after degradation), as well as the changes associated with the degradation. The experiment used an accelerated weathering test using triple irradiation with a xenon weather meter. In the three stages, "before degradation" refers to the state before the start of the test, "during degradation" refers to the state 200 hours after the start of the test, and "after degradation" refers to the state 1000 hours after the start of the test. For reference, Table 1 also includes the degradation progression formula fi(x) applied to each item in Equation (1).

[0032] [Table 1]

[0033] The accelerated weather resistance test used here was carried out by placing a sheet of polysulfide sealant measuring 70 mm wide x 150 mm high x 3 mm thick on a xenon weather meter (irradiance 180 W / m 2, by subjecting the test specimens to accelerated aging in wetting cycle A) for 200 hours or 1000 hours.

[0034] Tables 2 and 3 show the units, change mechanisms, and measurement methods for each item shown in Table 1. Note that "GU" in Table 2 is a gross unit, which is the amount of light reflected from the surface of the sample relative to a reference value.

[0035] [Table 2] [Table 3]

[0036] As shown in Table 1, in this test, there are two types of items: those in which clear changes were confirmed at the "during deterioration" stage (corresponding to the "leading items" mentioned above) (i=1-4), and those in which no clear changes were confirmed at the "during deterioration" stage, but clear changes were confirmed at the "after deterioration" stage (corresponding to the "lagging items" mentioned above) (i=5).

[0037] Therefore, as described above, the estimation device 10 according to this embodiment uses the items corresponding to i=1 to 4, i.e., the four items "carbon content," "sulfur content," "calcium content," and "glossiness," as leading items, and the item corresponding to i=5, i.e., the single item "ultraviolet absorber," as a lagging item. Then, the estimation device 10 according to this embodiment uses these five items to derive the deterioration level g(x) and remaining life T(x, t) according to the above-described formulas (1) and (4).

[0038] In this embodiment, a case where all of the above five items are applied will be described, but the present invention is not limited to this. For example, the preceding item may be a combination of only one of the above four items, or a combination of multiple items excluding all of them, or the lagging item may be a combination of one of the above items and another item.

[0039] In addition, as described above, this embodiment describes a case in which an accelerated weather resistance test using triple irradiation with a xenon weather meter is applied, and the time 200 hours after the start of the test is used as "during deterioration" and the time 1000 hours after the start of the test is used as "after deterioration," but is not limited to this. These values ​​of triple irradiation, 200 hours, and 1000 hours are merely examples, and it goes without saying that the present invention is not limited to these values.

[0040] Next, the weighting coefficients a and b in equation (1) will be described.

[0041] [Weighting coefficient a and weighting coefficient b] In the estimation device 10 according to this embodiment, in equation (1) for calculating the deterioration level, a weighting factor a is applied to the average value of the values ​​obtained by the deterioration progress equation for the preceding item, and a weighting factor b is applied to the average value of the values ​​obtained by the deterioration progress equation for the lagging item. For example, in the distribution of (a+b=1), the weight of the index that changes prior to deterioration is set to a (e.g., 0.2), and the weight of the index that changes prior to deterioration is set to b (e.g., 0.8). The sum of the weighting factors a and b is set to 1. Alternatively, a weighting ratio that is close to this ratio may be used.

[0042] As described above, in this embodiment, a formula for calculating a weighted average of the average values ​​of the deterioration progress formulas for the preceding and lagging items is used as a formula for calculating the deterioration degree. This is to reduce the influence of the environment in which the sealing material to be estimated is actually used (hereinafter referred to as the "real environment"). For example, if the influence of the real environment on the physical quantity of the preceding item of the sealing material to be estimated is greater than the influence on the physical quantity of the lagging item, a relatively larger value is applied to the weighting coefficient a relative to the weighting coefficient b. The greater the difference in the magnitude of the influence, the larger the value of the weighting coefficient a is set.

[0043] In addition, in formula (1), the arithmetic mean of the values ​​obtained by the deterioration progress formula for the corresponding items is applied in order to average the degree of contribution of each corresponding item to formula (1). Therefore, if the influence of each corresponding item on the deterioration of the sealant differs, a formula that calculates a weighted average according to the degree of influence may be applied to formula (1).

[0044] Next, the estimated information database 13B according to this embodiment will be described with reference to Fig. 3. Fig. 3 is a schematic diagram showing an example of the configuration of the estimated information database 13B according to this embodiment.

[0045] As shown in FIG. 3, the estimated information database 13B according to this embodiment stores information on type, i, item, and average of measurement value in association with each other.

[0046] The type is information indicating the type of sealant, and the i is an identifier for identifying each item, which corresponds to the i in the above formula (1). The item is information indicating the name of the corresponding item, and the average of the measured values ​​is information indicating the average value of the measured values ​​obtained for the corresponding item through an accelerated weather resistance test using triple irradiation with the above-mentioned xenon weather meter.

[0047] Next, the operation of the estimation device 10 according to this embodiment will be described with reference to Figures 4 to 6. When a user inputs an instruction to start execution of the estimation program 13A via the input unit 14, the CPU 11 of the estimation device 10 executes the program 13A, thereby performing the estimation process shown in Figure 4. Note that, in order to avoid confusion, the case where the estimation information database 13B has already been constructed will be described here.

[0048] Prior to executing this estimation process, the user measures the above-mentioned five physical quantities of the sealing material (hereinafter referred to as the "target sealing material") whose deterioration level and remaining life are to be estimated using the method shown in Table 2, and then inputs an instruction to start executing the estimation program 13A.

[0049] In step 100 of FIG. 4, the CPU 11 controls the display unit 15 to display an initial information input screen having a predetermined configuration, and in step 102, the CPU 11 waits until predetermined information is input.

[0050] An example of an initial information input screen according to this embodiment is shown in Fig. 5. As shown in Fig. 5, the initial information input screen according to this embodiment displays a message prompting the user to input information. This initial information input screen also displays a first input area 15A for inputting the name of the target sealant, a second input area 15B for inputting the measurement values ​​of the above five items (five physical quantities measured in advance), and a third input area 15C for inputting the elapsed time since the target sealant began to be used.

[0051] 5 is displayed on the display unit 15, the user inputs the corresponding information into the corresponding input area via the input unit 14, and then presses the end button 15E. In response to this, the determination in step 102 is affirmative, and the process proceeds to step 104.

[0052] In step 104, the CPU 11 reads out all information (hereinafter referred to as "estimated information") corresponding to the name of the target sealing material input on the initial information input screen from the estimated information database 13B.

[0053] In step 106, the CPU 11 calculates the degradation level g(x) by substituting the measurement values ​​input on the initial information input screen and the estimated information read by the processing in step 104 into equations (1) to (3).

[0054] In step 108, the CPU 11 calculates the remaining life T(x, t) by substituting the calculated deterioration level g(x) and the elapsed time input on the initial information input screen into equation (4).

[0055] In step 110, the CPU 11 controls the display unit 15 to display an estimation result display screen having a predetermined configuration using the deterioration degree g(x) and remaining life T(x, t) obtained by the above processing. In step 112, the CPU 11 waits until predetermined information is input.

[0056] An example of an estimation result display screen according to this embodiment is shown in Fig. 6. As shown in Fig. 6, the estimation result display screen according to this embodiment displays the name of the target sealing material, as well as the calculated deterioration level g(x) and remaining life T(x, t). Therefore, by referring to the estimation result display screen, the user can understand these estimation results.

[0057] 6 is displayed on the display unit 15, the user checks the displayed degradation level g(x) and remaining life T(x, t), and then selects the end button 15E via the input unit 14. In response to this, the determination in step 112 is affirmative, and the present estimation process is terminated.

[0058] The estimated deterioration level can be used to diagnose the condition of the sealant and take subsequent measures (such as replenishing the sealant or applying a coating if the deterioration is more severe than expected). It can also be used to check the poorness of the environment in which the sealant is used.

[0059] As described above, according to this embodiment, values ​​of two types of items are acquired for the sealant to be estimated through prior experiments, namely, leading items, which are items whose changes have been confirmed during the course of deterioration, and lagging items, which are items whose changes have been confirmed after deterioration, and the acquired values ​​of the two types of items are used to estimate the deterioration level of the sealant. Therefore, the deterioration level of the sealant can be estimated more accurately than in conventional techniques.

[0060] Furthermore, according to this embodiment, the sealant is a polysulfide sealant, so that the degree of deterioration of the polysulfide sealant can be estimated with high accuracy.

[0061] Furthermore, according to this embodiment, the leading item is at least one of the carbon content, sulfur content, calcium content, and glossiness, and the lagging item is the ultraviolet absorber, so that the degradation level can be estimated taking into account the applied items.

[0062] Furthermore, according to this embodiment, the deterioration level is estimated using equation (1) configured as a linear combination equation, which makes it possible to more easily estimate the deterioration level of the sealing material.

[0063] Furthermore, according to this embodiment, the remaining life of the polysulfide sealant is estimated by equation (4) using equation (1) configured as a linear combination equation, which makes it possible to more easily estimate the remaining life of the polysulfide sealant.

[0064] It should be noted that the configuration of the estimated information database 13B applied in the above embodiment is merely an example, and it goes without saying that the configuration is not limited to the example.

[0065] Furthermore, in the above embodiment, for example, the following various processors can be used as the hardware structure of the processing unit that executes the processes of the acquisition unit 11A, the estimation unit 11B, and the presentation unit 11C. As described above, the various processors include a CPU, which is a general-purpose processor that executes software (programs) and functions as a processing unit, as well as dedicated electrical circuits that are processors having a circuit configuration specifically designed to execute specific processes, such as a programmable logic device (PLD) that is a processor whose circuit configuration can be changed after manufacture, such as an FPGA (Field-Programmable Gate Array), and an ASIC (Application Specific Integrated Circuit).

[0066] The processing unit may be configured with one of these various processors, or may be configured with a combination of two or more processors of the same or different types (for example, a combination of multiple FPGAs, or a combination of a CPU and an FPGA).The processing unit may also be configured with a single processor.

[0067] Examples of configuring a processing unit with a single processor include, first, a form in which one processor is configured with a combination of one or more CPUs and software, and this processor functions as the processing unit, as typified by computers such as client and server. Second, a form in which a processor is used to realize the functions of the entire system, including the processing unit, on a single IC (Integrated Circuit) chip, as typified by systems on chips (SoCs). In this way, the processing unit is configured using one or more of the above-mentioned various processors as a hardware structure.

[0068] Furthermore, more specifically, the hardware structure of these various processors can be an electric circuit that combines circuit elements such as semiconductor elements. [Explanation of symbols]

[0069] 10 Estimation device 11 CPU 11A Acquisition Department 11B Estimation part 11C Presentation section 12 Memory 13 Storage section 13A Estimation Program 13B Estimated Information Database 14 Input section 15 Display 15A First input area 15B Second input area 15C Third input area 15E Exit button 16 Media reading and writing device 17 Recording Media 18 Communication I / F section

Claims

1. an acquisition unit that acquires values ​​of two types of items, namely, leading items, which are items for which changes have been confirmed during deterioration in advance experiments relating to a polysulfide-based sealant that is the target of estimation, and lagging items, which are items for which changes have been confirmed after deterioration; an estimation unit that estimates a deterioration degree of the sealing material using the acquired values ​​of the two types of items; An estimation device comprising:

2. The estimation unit sets the preceding items to the carbon amount, sulfur amount, calcium amount, and glossiness, the lagging items to the ultraviolet absorber, i to a value indicating the type of the items, xi to a measured value of the corresponding item of the sealing material to be estimated, and x ｉ，前 Let x be the value before deterioration of the corresponding item. ｉ，途中 is the degradation value of the corresponding item, and x ｉ，後 is the value after deterioration of the corresponding item, fi(x) is a deterioration progress degree formula calculated by the following formula (2) or (3), a is a weighting coefficient for the preceding item, and b is a weighting coefficient for the lagging item, and the deterioration degree g(x) is estimated by the following formula (1): The estimation device according to claim 1 . [Equation 1] ・・・（１） 【number】 ・・・（２） 【number】 ・・・（３）

3. The estimation device according to claim 2, wherein the estimation unit estimates the remaining life T(x, t) of the sealing material using the following equation (4), where t is the time required for the sealing material to deteriorate up to that point. [Equation 2] ・・・（４）

4. 3. The estimation device according to claim 2, wherein a weighting ratio of weighting coefficients α=0.2 and b=0.8, or a weighting ratio approximate to said ratio, is used.

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