Testing device and testing method

Abstract

To provide a testing device for measuring a secular change of adhesion strength of an adhesive for adhering an adhered target to an adherend.SOLUTION: A testing device 1 comprises: tensile means 11 for pulling a predetermined test piece adhered near an adhered target of an adherend under the same adhesion condition as an adhesion condition for adhering the predetermined adhered target to the adherend in a predetermined direction; stress measurement means 12, 34 for measuring stress generated on the adhesion surface between the test piece and the adherend by pulling of the test piece; and stress outputting means 36 for outputting the measured stress.SELECTED DRAWING: Figure 1

Description

[Technical Field]

[0001] The present invention relates to a testing device and a testing method. [Background technology]

[0002] A proposed tensile stress test method for evaluating the adhesion of a paint film to a coated object includes an adhesion step in which a double-sided adhesive sheet having an adhesive strength equivalent to a predetermined tensile strength that satisfies the tensile test pass criteria is interposed between a tensile plate that is subjected to a tensile action and an adhesive plate that is adhered to the paint film; a pressure-bonding step in which the tensile plate and the adhesive sheet, and the adhesive plate and the adhesive sheet are pressure-bonded; an adhesion step in which the adhesive plate is adhered to the paint film with an adhesive that has an adhesive strength higher than the adhesive strength of the adhesive sheet; and a tensioning step in which the tensile plate is pulled in a direction away from the paint film (see Patent Document 1). [Prior art documents] [Patent documents]

[0003] [Patent Document 1] Patent No. 4483671 Summary of the Invention [Problem to be solved by the invention]

[0004] No mechanism has been proposed for measuring the change over time in the adhesive strength of an adhesive that bonds an object to be bonded to an adherend.

[0005] The present invention has been made in consideration of the above circumstances, and aims to provide a testing device and a testing method that can measure the change over time in the adhesive strength of an adhesive that bonds an object to be bonded to an adherend. [Means for solving the problem]

[0006] In order to achieve the above object, one aspect of the present invention is a testing device having a pulling means for pulling a predetermined test piece adhered to a predetermined adhesion object in a predetermined direction under the same adhesion conditions as those under which the predetermined adhesion object was adhered to the adherend, a stress measuring means for measuring the stress generated on the adhesive surface between the predetermined test piece and the adherend as a result of the predetermined test piece being pulled, and a stress output means for outputting the measured stress.

[0007] Another aspect of the present invention is a testing method including the steps of pulling a predetermined test piece adhered to a predetermined adhesion object in the vicinity of the adhesion object on the adherend under the same adhesion conditions as those under which the predetermined adhesion object was adhered to the adherend, in a predetermined direction; measuring the stress generated at the adhesive surface between the predetermined test piece and the adherend as a result of the predetermined test piece being pulled; and outputting the measured stress. [Effects of the Invention]

[0008] According to the present invention, it is possible to provide a testing device and a testing method that can measure the change over time in the adhesive strength of an adhesive that bonds an object to be bonded to an adherend. [Brief explanation of the drawings]

[0009] [Figure 1] 1 is a diagram showing a configuration of a test device 1 according to an embodiment. [Figure 2] FIG. 2 is a diagram showing the configuration when the measuring device of the test device 1 is placed on an adherend 200. [Figure 3] 2 is a block diagram showing an example of a hardware configuration of a control device 20. FIG. [Figure 4] 2 is a functional block diagram showing an example of a functional configuration of a control device 20. FIG. [Figure 5] 4 is a flowchart showing an example of the flow of processing in the measurement device 10. [Figure 6] 4 is a flowchart showing an example of a processing flow in the control device 20. [Figure 7]10 is a diagram showing a specific example of a graph of the calculation results displayed on the display 261 of the output unit 26 of the control device 20. FIG. [Figure 8] 1 is a diagram showing a specific example of a location to be tested using the test device 1. FIG. [Figure 9] FIG. 10 is a diagram showing an example of the configuration of a stand gauge provided to accurately align a load hook and a test piece. [Figure 10] FIG. 3 is a diagram showing another configuration of the test device 1. DETAILED DESCRIPTION OF THE INVENTION

[0010] Hereinafter, an embodiment of a testing device and a testing method according to the present invention will be described with reference to the drawings. <Overall configuration of test device 1> FIG. 1 is a diagram showing the overall configuration of a testing apparatus 1 according to an embodiment. FIG. 2 is a diagram showing the configuration when the measuring device 10 of the testing apparatus 1 is placed on an adherend 200. In FIG. 2, the presser frame 112 (see FIG. 1) is shown with an imaginary line (two-dot chain line) to make it easier to understand the connection between the load hook 111 and the test piece 300. Also, in FIG. 2, the cover 124 is shown removed to make it easier to understand the internal structure of the load sensor 121. In FIGS. 1, 2, and 9, the up-down (vertical) direction when the figures are viewed horizontally relative to the paper is defined as the Y direction. In the Y direction, the upper side is defined as the Y1 side, and the lower side is defined as the Y2 side.

[0011] The test apparatus 1 according to this embodiment is a system that can output information indicating the change over time in the adhesive strength of the adhesive used for bonding an "object to be bonded" to an "adherend" after the "object to be bonded" has been bonded. In the test apparatus 1, the information indicating the change over time in the adhesive strength of the adhesive is calculated based on the measurement results of the stress generated at the adhesive surface between the test piece and the adherend.

[0012] In this embodiment, the "object to be bonded" is not limited to a specific object as long as it can be bonded to an adherend using an adhesive. For example, when a flexible solar panel is bonded to the surface of a roof or the like, the flexible solar panel is the object to be bonded, and the roof or the like is the adherend. In this case, the roof or the like refers to, for example, a folded-plate roof, a flat roof, a wall, a rod-shaped or strip-shaped intermediate metal member with a fixing portion to be screwed onto a folded-plate roof, a rod-shaped or strip-shaped intermediate metal member with a fixing portion to be fitted onto a folded-plate roof, etc. Note that Figure 2 and other figures show the shape of the adherend 200 schematically.

[0013] In this embodiment, the term "adhesive" refers to any medium capable of adhering the object to be bonded and the test specimen to the adherend, and is not limited to a general adhesive, but also includes, for example, a filler having adhesive properties. The properties of the adhesive are not particularly limited, but silicone-based fillers and adhesives having the following properties are preferred. That is, adhesives that are resistant to high temperatures and high humidity, durable to ultraviolet light, resistant to expansion and contraction, can maintain high elasticity for a long period of time, have high viscosity, and can fill gaps with the adherend to maintain adhesion are preferred.

[0014] (Measuring device 10) As shown in FIGS. 1 and 2, in the test apparatus 1, a measurement device 10 includes a tension section (tension means) 11, a measurement section (stress measurement means) 12, and a communication section 13. The tensioning unit 11 includes a load hook 111, a presser frame 112, a screw shaft 113, a stepping motor 114, a manual handle 115, and the like.

[0015] The load hook 111 is a hook that pulls the test piece 300 toward the Y1 side while connected to the connection portion 301 of the test piece 300 adhered to the adherend 200. When attaching the load hook 111 to the test piece 300, first move the load sensor 121 toward the Y2 side and insert the load hook 111 through the hole that is the connection portion 201 of the test piece 300. Then, an operator moves the load sensor 121 toward the Y1 side while turning the manual handle 115, and stops the movement of the load sensor 121 at a position where the load hook 111 contacts the edge of the connection portion 301 of the test piece 300. The position where the load sensor 121 stops at this time is the zero load point. However, the zero load point may be automatically controlled by the control device 20 by repeating tension and relaxation several times.

[0016] The test piece 300 is a test member that is bonded to the adherend 200 in the vicinity of the object to be bonded under the same bonding conditions (hereinafter also referred to as "bonding conditions") as those when the object to be bonded is bonded to the adherend 200. The material of the test piece 300 is not particularly limited. For example, the test piece 300 may be made of an aluminum alloy member or the like that has a shear stress greater than the stress that satisfies the pass criteria for a test of the soundness of an adhesive with respect to aging degradation.

[0017] Furthermore, the size of the test piece 300 is not particularly limited, but it is desirable that the test piece 300 have a side of, for example, about 2 cm (centimeters). The bonding conditions are also not particularly limited. For example, the bonding conditions may be the type of adhesive, the timing of bonding, the temperature during bonding, etc. The adhesive is applied to the back surface of the test piece 300, but it may also be applied to the position on the adherend 200 where the test piece 300 is to be bonded.

[0018] The presser frame 112 is a metal frame member for stably pressing the measuring device 10 against the adherend 200. The presser frame 112 is configured in a substantially frame shape in a plan view. The load hook 111 is disposed inside the presser frame 112.

[0019] The screw shaft 113 is a long screw that pulls the load sensor 121 (described later) toward the Y1 side. The screw shaft 113 is threadedly engaged with a nut seat 123 (see FIG. 2), which is the movable part of the load sensor 121. When the user turns the manual handle 115 (described later), the screw shaft 113 rotates in a predetermined direction. As a result, the load sensor 121 is pulled up toward the Y1 side along the screw shaft 113 together with the nut seat 123 that is threadedly engaged with the screw shaft 113.

[0020] The stepping motor 114 is a motor for pulling the load sensor 121 up toward the Y1 side. When the stepping motor 114 is driven to rotate the screw shaft 113, the load sensor 121 is pulled up toward the Y1 side. The driving of the stepping motor 114 is controlled by information for controlling the driving (hereinafter also referred to as "driving control information") transmitted from the control device 20. The manual handle 115 is a handle for winding up the screw shaft 113. The manual handle 115 is also used when measurements using the measuring device 10 are performed manually.

[0021] The tensioning unit 11 pulls up a specific test piece 300 from among multiple test pieces 300 bonded near the bonding object under the same bonding conditions depending on the timing of the test. Here, "the same bonding conditions" refers to, for example, the same bonding area. Also, "the specific test piece 300" refers to, for example, a test piece 300 with a specific marking applied depending on the timing.

[0022] The measurement unit 12 includes a load sensor 121 and a rotation angle sensor 122. The load sensor 121 is a sensor that measures the load when the load hook 111 pulls up the test specimen 300. The rotation angle sensor 122 is a sensor that measures the distance that the load hook 111 pulls up the test specimen 300. As shown in FIG. 2 , the load sensor 121 is fixed to a nut seat 123 that moves up and down by a screw shaft 113 and a stepping motor 114, and is further covered with a cover 124.

[0023] The load sensor 121 measures the load based on the strength with which the load sensor 121 is pulled upward Y1. The rotation angle sensor 122 measures the distance (hereinafter also referred to as "peeling distance") over which the test piece 300 adhered to the adherend 200 is peeled from the adherend 200 as a result of being pulled toward the Y1 side.

[0024] The communication unit 13 transmits various types of information to the control device 20. For example, the communication unit 13 transmits the measurement results by the measurement unit 12 to the control device 20. The communication unit 13 in this embodiment includes a communication cable 131 that enables a wired connection to the control device 20.

[0025] (Control device 20) The control device 20 is a device that performs overall control of the test device 1. The control device 20 is capable of executing predetermined application programs that enable the test device 1 to be used. The control device 20 is capable of acquiring various types of information transmitted from the measurement device 10 and performing various types of processing. The control device 20 is also capable of transmitting various types of information to the measurement device 10 and causing it to perform various types of processing.

[0026] For example, the control device 20 calculates the stress generated at the adhesive surface between the test piece 300 and the adherend 200 based on the measurement results from the measuring device 10, and outputs the calculation results. For example, the control device 20 graphs the calculation results and displays them on the display 261 or the like. The control device 20 also stores and manages the calculation results in a database. The control device 20 may also store and manage the calculation results in an external storage medium such as a memory card.

[0027] Furthermore, when the calculation result of the stress generated at the adhesive surface between the test piece 300 and the adherend 200 satisfies the pass criteria for the adhesive soundness test regarding aging degradation, i.e., when the measured stress reaches a predetermined test pass stress, the control device 20 notifies information indicating this (hereinafter also referred to as "test pass information"). In this case, the control device 20 may notify the test pass information by, for example, outputting a sound from the speaker 262. Alternatively, the control device 20 may notify the test pass information by, for example, turning on a lamp. Alternatively, the control device 20 may notify the test pass information by, for example, displaying the test pass information on the display 261 or the like.

[0028] Furthermore, when the calculation result of the stress generated at the adhesive surface between the test piece 300 and the adherend 200 satisfies the pass criteria for the adhesive soundness test regarding aging degradation and the time during which this state has been maintained has elapsed a predetermined time (hereinafter also referred to as the "test passing time"), the control device 20 notifies the user of this fact. In this case, the control device 20 may notify the user of the passage of the test passing time by, for example, outputting a sound from the speaker 262. Alternatively, the control device 20 may notify the user of the passage of the test passing time by, for example, turning on a lamp. Alternatively, the control device 20 may notify the user of the passage of the test passing time by, for example, displaying the passage of the test passing time on the display 261 or the like.

[0029] <Hardware configuration of the control device 20> FIG. 3 is a block diagram showing an example of the hardware configuration of the control device 20. As shown in FIG. The control device 20 includes a CPU (Central Processing Unit) 21, a ROM (Read Only Memory) 22, a RAM (Random Access Memory) 23, a bus 24, an input / output interface 25, an output unit 26, an input unit 27, a memory unit 28, a communication unit 29, a drive 50, etc.

[0030] The CPU 21 executes various processes in accordance with programs recorded in the ROM 22 or programs loaded from the storage unit 28 into the RAM 23. The RAM 23 also stores data and the like required for the CPU 21 to execute various processes. The CPU 21, the ROM 22, and the RAM 23 are interconnected via a bus 24. An input / output interface 25 is also connected to this bus 24.

[0031] The input / output interface 25 is connected to an output unit 26, an input unit 27, a storage unit 28, a communication unit 29, and a drive 50. The output unit 26 is composed of a display 261, a speaker 262, etc., and outputs various types of information as images and sounds. The input unit 27 is composed of buttons, a keyboard, a mouse, a touch panel, etc., and accepts input of various types of information. In the example of FIGS. 2 and 3, an operation button 271 is provided as the input unit 27. The storage unit 28 is composed of a hard disk, a DRAM (Dynamic Random Access Memory), etc., and stores various types of data. The communication unit 29 communicates with the measuring device 10 connected via a wire. As will be described later, the communication unit 29 may communicate with the measuring device 10 or other devices via a network N (see FIG. 10) composed of the Internet, etc.

[0032] Removable media 51, such as a magnetic disk, optical disk, magneto-optical disk, or semiconductor memory, is appropriately attached to the drive 50. Programs read from the removable media 51 by the drive 50 are installed in the storage unit 28 as needed. The removable media 51 can also store various data stored in the storage unit 28 in the same way as the storage unit 28.

[0033] <Functional configuration of the control device 20> FIG. 4 is a functional block diagram showing an example of the functional configuration of the control device 20. As shown in FIG. When the measuring device 10 is operating, the CPU 21 of the control device 20 functions as an acquisition unit 31, a management unit 32, a drive control unit 33, a calculation unit (stress measurement means) 34, a generation unit 35, an output control unit (stress output means, notification means) 36, and a transmission control unit 37.

[0034] The memory unit 28 of the control device 20 also includes a pass criteria DB 41, a measurement result DB 42, and a calculation result DB 43. The pass criteria DB 41 is a database that stores pass criteria for testing the soundness of an adhesive with respect to aging degradation. The measurement result DB 42 is a database that stores measurement results obtained by the measuring device 10. The calculation result DB 43 is a database that stores calculation results of stresses generated at the adhesive surface between the test piece 300 and the adherend 200.

[0035] The acquisition unit 31 acquires various types of information. For example, the acquisition unit 31 acquires the measurement results obtained by the measurement device 10. The management unit 32 manages various types of information stored in various databases of the storage unit 28. For example, the management unit 32 manages the pass criteria stored in the pass criteria DB 41. The management unit 32 also manages the measurement results stored in the measurement result DB 42. The management unit 32 also manages the calculation results stored in the calculation result DB 43.

[0036] The drive control unit 33 controls the drive of the measurement device 10 . The calculation unit 34 calculates various pieces of information based on various pieces of information. For example, the calculation unit 34 measures the stress occurring at the adhesive surface between the test piece 300 and the adherend 200 based on the measurement results from the measurement device 10. Specifically, the calculation unit 34 measures the stress occurring at the adhesive surface by calculating, for example, the following values ​​based on the load measurement results from the load sensor 121 and the peel distance measurement results from the rotation angle sensor 122: That is, the calculation unit 34 calculates the load-bearing strength indicating the absolute strength until the test piece 300 is peeled off, the specified load strength indicating whether the test piece can withstand a specified load-bearing strength, the deflection indicating the degree of elongation, the load-bearing strength at a specified deflection, etc. In this specification, calculating the load-bearing strength, the specified load strength, etc. based on the load measurement results and the peel distance measurement results is also referred to as "measuring stress" or "calculating stress."

[0037] The generating unit 35 generates various pieces of information based on various pieces of information. For example, the generating unit 35 graphs the calculation results by the calculating unit 34. Specific examples of the calculation results graphed by the generating unit 35 will be described later.

[0038] The output control unit 36 ​​controls the output unit 26 (see FIG. 3) to output various types of information. For example, the output control unit 36 ​​causes the display 261 (see FIG. 1) of the output unit 26 to display the stress calculation results. Also, for example, the output control unit 36 ​​causes the speaker 262 (see FIG. 1) of the output unit 26 to output test pass information. Also, for example, the output control unit 36 ​​causes a lamp (not shown) to light up to output the test pass information.

[0039] The transmission control unit 37 controls the transmission of various types of information via the communication unit 29 (see FIG. 3). Specifically, the transmission control unit 37 controls the transmission of various types of information to the measuring device 10. For example, the transmission control unit 37 controls the transmission of drive control information to the measuring device 10, which is used by the drive control unit 33 to control the drive of the measuring device 10.

[0040] <Processing flow in the measuring device 10> 5 is a flowchart showing an example of the processing flow in the measurement device 10. It is desirable that the following measurements by the measurement device 10 be carried out after the adhesive has completely hardened.

[0041] When an operation indicating the start of a test is performed (YES in step S1) with the load hook 111 connected to the test piece 300 bonded near the bonding target of the adherend 200, the measuring device 10 winds up the screw shaft 113 (step S2). The "operation indicating the start of a test" is, for example, an operation to the control device 20, such as pressing a predetermined start button. Then, the stepping motor 114 pulls up the load sensor 121 toward the Y1 side (step S3). This causes the measuring device 10 to start measuring the load with the load sensor 121 (step S4) and measuring the peel distance with the rotation angle sensor 122 (step S5). On the other hand, if an operation indicating the start of a test has not been performed (NO in step S1), the measuring device 10 repeats the determination process of step S1.

[0042] The measuring device 10 transmits the measurement result to the control device 20 (step S6) and ends the process (END). Specifically, the measuring device 10 transmits the load measurement result from the load sensor 121 and the peel distance measurement result from the rotation angle sensor 122 to the control device 20 and ends the process.

[0043] <Processing flow in the control device 20> FIG. 6 is a flowchart showing an example of the flow of processing in the control device 20. When various measurement results are transmitted from the measuring device 10 (YES in step S21), the control device 20 acquires the various measurement results transmitted (step S22). Specifically, the control device 20 acquires the load measurement result from the load sensor 121 and the peel distance measurement result from the rotation angle sensor 122 transmitted from the measuring device 10. On the other hand, if various measurement results have not been transmitted from the measuring device 10 (NO in step S21), the measuring device 10 repeats the determination process of step S21.

[0044] The control device 20 calculates the stress occurring at the adhesive surface between the test piece 300 and the adherend 200 based on the various measurement results acquired in step S22 (step S23). The control device 20 graphs the calculation results in step S23 (step S24) and displays them on the display 261 of the output unit 26 (step S25). This completes the processing of the control device 20 (END).

[0045] <Example> (Example of a graph) FIG. 7 is a diagram showing a specific example of a graph of the calculation results displayed on the display 261 of the output unit 26 of the control device 20. The graph shown in FIG. 7 is a graph in which the horizontal axis represents "peel distance" (unit: mm) and the vertical axis represents "load" (unit: kg), and is a graph of the calculation results by the control device 20. The "load" on the vertical axis represents the magnitude of the force with which the load hook 111 of the tensioning unit 11 of the measuring device 10 pulls the test piece 300 adhered to the adherend 200 toward the Y1 side. Note that the example in FIG. 7 is a case in which the adherend 200 is a soft sheet such as a vinyl chloride sheet.

[0046] In the example of Figure 7, when the test piece 300 adhered to the surface of the adherend 200, which is a soft sheet, is pulled up toward the Y1 side together with the load hook 111, the adherend 200 is also pulled up toward the Y1 side while deforming. However, the test piece 300 adhered to the adherend 200 gradually peels off from the adherend 200 and completely peels off at a predetermined timing. When the test piece 300 is completely peeled off from the adherend 200, the load becomes 0 (zero).

[0047] In the graph of FIG. 7, the load reaches its peak (maximum load) at peel distance d1. Thereafter, the load gradually decreases as the "peel distance" increases, and the load becomes 0 (zero) at peel distance d2. In other words, test piece 300 is completely peeled from adherend 200 at peel distance d2. Peel distance d2 when test piece 300 is completely peeled from adherend 200 indicates the maximum displacement. A user operating control device 20 can grasp the maximum load and maximum displacement in real time by observing changes in the graph displayed on display 261.

[0048] (Specific examples of test subjects) FIG. 8 is a diagram showing a specific example of a location to be tested to which the test device 1 is applied. 8 shows a specific example of a location to be tested using the test device 1, where a flexible solar panel as the adhesion object 100 is bonded to a folded-plate roof as the adherend 200. In the example shown in Fig. 8, the flexible solar panel as the adhesion object 100 has a back surface, which will be the adhesive surface, made of polyvinylidene fluoride (PVDF), and the test piece 300 is made of an aluminum alloy.

[0049] In this case, multiple test pieces 300 are attached to the adherend 200, which is a folded-plate roof, at a position where a flexible solar panel, which is the bonding object 100, is to be attached. By attaching multiple test pieces 300, the risk of an operator accidentally peeling off a test piece 300 can be dispersed. Then, a test is performed to check the soundness of the adhesive with respect to deterioration over time. Specifically, during voluntary inspections and annual maintenance inspections, tests are performed on the adhesive condition or adhesive strength, and the results are recorded. In the example shown in FIG. 8, multiple test pieces 300 (seven in the example of FIG. 8) are attached to the adherend 200 during construction, and testing is performed using the testing device 1 during annual maintenance inspections to confirm whether the peel load capacity meets the pass criteria.

[0050] For example, the peel load capacity that satisfies the pass criteria may be determined by whether the adhesive can withstand a load of about 20 kg for one minute. Note that, depending on the load sensor 121, the load that can be measured may be about 40 kg. Also, adhesives often break at loads of about 30 kg. Therefore, even if a test is conducted to see if the adhesive can withstand a load of about 20 kg for one minute, the adhesive will not break. If the adhesive can withstand that load, the load may be increased to about 40 kg and the test may be continued. Some adhesives can withstand loads of about 40 kg.

[0051] <Modification> 2, the test piece 300 is adhered to the adherend 200, but to achieve more accurate measurements, it is necessary to accurately align the load hook 111 with the test piece 300. That is, accurate measurements can be achieved by pulling up the load hook 111 connected to the test piece 300 in the vertical direction (Y1 direction) so that the pulling direction is not oblique.

[0052] 9 is a diagram showing an example of the configuration of a stand gauge 400 provided to accurately align the load hook 111 and the test piece 300. In FIG. 9, the holding frame 112 (see FIG. 1) is not shown in order to make the positional relationship between the test piece 300 and the stand gauge 400 easier to understand.

[0053] The stand gauge 400 is a metal plate fixed to the bottom of the Y1 side of the measuring device 10, and is attached to the underside of the presser frame 112 (not shown). The stand gauge 400 is provided with a window 401 for placing the test specimen 300. The window 401 is a rectangular through-hole formed to match the shape and size of the test specimen 300. The position of the window 401 is set so that when the load hook 111 is connected to the test specimen 300 placed in the window 401 and pulled up, it can be pulled up vertically.

[0054] As shown in FIG. 9 , the size of the window 401 of the stand gauge 400 is designed to be slightly larger than the size of the test specimen 300. This prevents adhesive that has spilled out from the end of the test specimen 300 from adhering to the stand gauge 400. The difference in size between the window 401 and the test specimen 300 is such that a gap of approximately 1 mm (millimeter) is formed when the test specimen 300 is placed in the window 401. This prevents adhesive that has spilled out from the end of the test specimen 300 from adhering to the stand gauge 400 while achieving the objective of pulling the test specimen 300 up vertically. Furthermore, the gap that is formed provides slack, making it easier to place the test specimen 300 in the window 401.

[0055] <Advantageous Effects of the Present Embodiment> According to the above-described embodiment, it is possible to provide a system capable of measuring the change over time in the adhesive strength of the adhesive that bonds the bonding object 100 to the adherend 200.

[0056] <Other embodiments> While one embodiment of the test apparatus according to the present invention has been described above, the present invention is not limited to the above embodiment, and modifications and improvements within the scope of achieving the object of the present invention are included in the present invention. For example, in the test apparatus 1 of the embodiment, the measurement apparatus 10 and the control apparatus 20 are configured as separate entities, but this is not a limitation. The test apparatus 1 may also be, for example, an integrated apparatus in which the measurement apparatus 10 and the control apparatus 20 are built into a single housing. Furthermore, in the test apparatus 1 of the embodiment, the measurement apparatus 10 and the control apparatus 20 are connected by wire (communication cable 131), but this is not a limitation. The measurement apparatus 10 may also be connected wirelessly to a smartphone, tablet terminal, or personal computer capable of executing an application program that realizes the functions of the control apparatus 20.

[0057] Furthermore, in the test apparatus 1, the measurement apparatus 10 and the control apparatus 20 may be connected via a network. FIG. 10 is a diagram showing another configuration of the test apparatus 1. In the test apparatus 1 shown in FIG. 10, the measurement apparatus 10 and the control apparatus 20 are connected via a network N by wire or wirelessly. The network N is, for example, the Internet, a LAN (Local Area Network), a VPN (Virtual Private Network), etc. Furthermore, in the configuration shown in FIG. 10, the control apparatus 20 may communicate with other devices (for example, an external server, an external database, etc.) via the network N.

[0058] In the embodiment, the graph in Fig. 7 shows a specific example in which the adherend 200 is a soft sheet such as a vinyl chloride sheet, but is not limited to this. For example, if the adherend 200 is a rigid material such as a metal roof (for example, as in the example shown in Fig. 7), the test piece 300 will completely peel off from the adherend 200 immediately after the load reaches its peak (maximum load). In this case, the shape of the graph will differ from that of Fig. 7, in that the load will suddenly become 0 (zero) after the test piece 300 has completely peeled off from the adherend 200.

[0059] In the embodiment shown in FIG. 9, a stand gauge 400 is provided as a method for accurately aligning the load hook 111 and the test piece 300, but this is not limiting. A method for accurately aligning the load hook 111 and the test piece 300 may also be, for example, laser light marking. Light from a laser diode may be irradiated from the load sensor 121 toward the Y1 side. This allows the light from the laser diode to function as marking, thereby enabling accurate alignment of the load hook 111 and the test piece 300.

[0060] <Other> Furthermore, the above-described series of processes can be executed by hardware or software. In other words, the above-described functional configuration is merely an example and is not particularly limited. In other words, it is sufficient for the information processing system to be provided with a function that can execute the above-described series of processes as a whole, and the type of functional block used to realize this function is not particularly limited to the above-described example.

[0061] The location of the functional blocks is not particularly limited and may be arbitrary. For example, the functional blocks of the control device 20 may be transferred to another device, or the functional blocks of another device may be transferred to a server. Furthermore, one functional block may be configured as a single piece of hardware, a single piece of software, or a combination of both.

[0062] When a series of processes is executed by software, the programs constituting the software are installed into a computer or the like from a network N or a recording medium. The computer may be a computer incorporated into dedicated hardware. The computer may also be a computer capable of executing various functions by installing various programs, such as a server, a general-purpose smartphone, or a personal computer.

[0063] The recording medium containing such a program may be configured as a removable medium (not shown) that is distributed separately from the device main body in order to provide the program to users, etc., or may be configured as a recording medium that is pre-installed in the device main body and provided to users, etc. Since the program can be distributed via a network, the recording medium may be installed in or accessible to a computer that is connected to or connectable to the network N.

[0064] In this specification, the steps describing the program recorded on the recording medium include not only processes that are performed in chronological order, but also processes that are not necessarily performed in chronological order but are performed in parallel or individually. Also, in this specification, the term "system" means an overall device composed of multiple devices or multiple means, etc.

[0065] In other words, the test apparatus to which the present invention is applied can take various forms having the following configurations. (1) That is, the test apparatus 1 to which the present invention is applied includes: a pulling means (for example, the pulling unit 11 in FIG. 2) that pulls the test piece 300 adhered to the adherend 200 in the vicinity of the adhesion object 100 in a direction perpendicular to the Y1 side under the same adhesion conditions as those under which the adhesion object 100 was adhered to the adherend 200; a stress measuring means (e.g., the measuring unit 12 in FIG. 1 and the calculating unit 34 in FIG. 4) for measuring the stress generated on the adhesive surface between the test piece 300 and the adherend 200 when the test piece 300 is pulled; a stress output means (for example, the output control unit 36 ​​in FIG. 4) for outputting the measured stress; The test device has the following features:

[0066] (2) In addition, the pulling means can pull one selected test piece 300 from among multiple test pieces 300 bonded under the same bonding conditions near the bonding object 100 depending on the timing of the test. This allows for more appropriate testing by eliminating any changes in adhesive strength due to previous tests.

[0067] (3) It also has a notification means (for example, the output control unit 36 ​​in FIG. 4) that notifies that the measured stress has reached a predetermined test pass stress. This allows the system to recognize when a predetermined test pass stress has been reached, thereby avoiding unnecessary tests that apply excessive tensile force, and allowing the system to perform necessary and sufficient tests.

[0068] (4) The notifying means can also notify when the time during which the measured stress has reached a predetermined test pass stress has elapsed beyond a predetermined test pass time. This allows the system to recognize that a predetermined test passing time has elapsed, thereby avoiding unnecessary tests that take excessively long time, and allowing the system to perform necessary and sufficient tests.

[0069] The test method to which the present invention is applied can take various forms having the following configurations. (5) That is, the test method to which the present invention is applied is A step of pulling a predetermined test piece adhered to a predetermined object to be bonded on an adherend in a predetermined direction under the same adhesion conditions as those under which the predetermined object to be bonded was bonded to the adherend; measuring a stress generated on the adhesive surface between the predetermined test piece and the adherend when the predetermined test piece is pulled; outputting the measured stress; The test method includes: [Explanation of symbols]

[0070] 1: Testing device, 10: Measuring device, 11: Tensile section, 12: Measuring section, 13: Communication section, 20: Control device, 21: CPU, 26: Output section, 28: Memory section, 29: Communication section, 31: Acquisition section, 32: Management section, 33: Drive control section, 34: Calculation section, 35: Generation section, 36: Output control section, 37: Transmission control section, 111: Load hook, 112: Presser frame, 113: Screw shaft, 114: Stepping motor, 115: Manual handle, 121: Load sensor, 122: Rotation angle sensor, 200: Adherend, 261: Display, 262: Speaker, 300: Test piece, N: Network

Claims

1. a tensioning means for pulling a predetermined test piece adhered to the adherend in the vicinity of the predetermined adhesion object in a predetermined direction under the same adhesion conditions as those under which the predetermined adhesion object was adhered to the adherend; a stress measuring means for measuring a stress generated on the adhesive surface between the test piece and the adherend when the test piece is pulled; a stress output means for outputting the measured stress; A test device having:

2. the pulling means pulls one of the test pieces selected from the plurality of test pieces bonded under the same bonding conditions near the bonding object in accordance with the timing of the test; The test device of claim 1 .

3. and a notification means for notifying that the measured stress has reached a predetermined test pass stress. The test device of claim 1 .

4. The notification means notifies that a time during which the measured stress has reached the test pass stress has elapsed beyond a predetermined test pass time.

4. The test device according to claim 3.

5. A step of pulling a predetermined test piece adhered to a predetermined object to be bonded on an adherend in a predetermined direction under the same adhesion conditions as those under which the predetermined object to be bonded was bonded to the adherend; measuring a stress generated at an adhesive interface between the test piece and the adherend by pulling the test piece; outputting the measured stress; Test methods including:

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