Thin film structure test tool and test method

Abstract

The invention relates to a thin film structure test tool and test method, and relates to the technical field of thin film test.The thin film structure test tool comprises two to-be-tested assemblies arranged in the first direction in a spaced mode, the two to-be-tested assemblies are symmetrically arranged, and each to-be-tested assembly comprises a first plywood and a second plywood; a first shielding layer is clamped between the first plywood and the second plywood, a second shielding layer is arranged on the side, away from the second plywood, of the first plywood, the two second plywood are connected through a first connecting assembly, and the two second shielding layers are fixed through a connecting plate. The connecting plate is arranged on the side, away from the first connecting assembly, of the second shielding layer, and a fixing plate is fixedly connected between the connecting plate and each second shielding layer; the device further comprises a force measuring device, the force measuring device comprises a fixed end and a movable end, the fixed end is fixedly connected with the first connecting assembly, and the movable end is fixedly connected with the connecting plate and exerts pulling force on the connecting plate in the third direction. The method has the effect of improving the stress distribution uniformity of the main shielding layer.

Description

Technical Field

[0001] This application relates to the field of thin film testing technology, and in particular to a thin film structure testing fixture and testing method. Background Technology

[0002] Liquefied natural gas (LNG) storage tanks are special cryogenic pressure vessels used to store LNG at temperatures down to -162°C under normal pressure. Based on tank type, they can be divided into four categories: horizontal / vertical, mother-daughter tanks, full-containment tanks, and membrane-type tanks. Among them, membrane-type LNG storage tanks represent an innovative cryogenic storage technology. By separating structural support, thermal insulation, and airtightness functions in their design, they significantly improve the safety, economy, and environmental friendliness of large LNG storage tanks, and can be used on land or at sea.

[0003] When moving a storage tank containing liquefied natural gas, the internal liquid oscillation or thermal expansion and contraction caused by the internal liquid temperature can cause the shielding membrane structure in direct contact with the liquid to shift. This shift can occur at very high frequencies. To verify the mechanical stability of the shielding membrane structure after high-frequency shifts, mechanical testing is required. In actual testing, the main shielding layer is usually connected to a mechanical device, and then the device is used to repeatedly apply tension to the main shielding layer, causing relative displacement between the main and secondary shielding layers, thus simulating the shift during use.

[0004] Regarding the aforementioned technologies, when the mechanical device applies force to the main shielding layer, since the main shielding layer is generally rectangular during testing, and the mechanical device is connected to the center of the main shielding layer, the distance from the mechanical device to the longer edge of the main shielding layer is relatively short, which further leads to uneven stress distribution transmitted by the mechanical device to the main shielding layer. Summary of the Invention

[0005] To improve the uniformity of stress distribution on the main shielding layer by mechanical equipment, this application provides a thin-film structure testing fixture and testing method.

[0006] Firstly, this application provides a thin film structure testing fixture, which adopts the following technical solution:

[0007] A thin film structure testing fixture includes two test components spaced apart along a first direction, and the two test components are symmetrically arranged. Each test component includes a first plywood and a second plywood.

[0008] A first shielding layer is sandwiched between the first plywood and the second plywood. Two second plywoods are disposed on the side of the two first plywoods that are close to each other. A second shielding layer is disposed on the side of the first plywood that is away from the second plywood. The two second plywoods are connected by a first connecting component. Each first shielding layer and each second plywood are fixed by an anchoring component. The two second shielding layers are fixed by a connecting plate. The connecting plate is disposed on the side of the second shielding layer that is away from the first connecting component. A fixing plate is fixedly connected between the connecting plate and each second shielding layer. Multiple fixing plates are spaced apart along the second direction.

[0009] It also includes a force measuring device, which has a fixed end and a movable end. The fixed end is fixedly connected to the first connecting assembly, and the movable end is fixedly connected to the connecting plate, and applies a tensile force to the connecting plate in a third direction. Two first plywoods are fixed together by a second connecting assembly. Multiple second connecting assemblies are provided at intervals along a second direction. The second connecting assembly includes a second support member and a second connecting rod. The second support member is sandwiched between two first plywoods. Each first plywood and the second support member are fixedly connected by the second connecting rod.

[0010] By adopting the above technical solution, by setting the components to be tested, the second shielding layer, the first plywood, the first shielding layer and the second plywood correspond to the main shielding, plywood, secondary shielding and plywood structure of the storage tank system. The anchoring component connects the first shielding layer and the second plywood. During simulation testing, a force measuring device applies a tensile force along a third direction to the connecting plate to simulate the offset when the liquid inside the storage tank oscillates, causing the second shielding layer to displace relative to the first shielding layer, thereby testing the stability of the anchoring component. The moving end is fixed at the center position of the connecting plate, but the distance between the moving end and the four sides of the connecting plate is different. The distance from the moving end to the longer edge of the connecting plate is shorter, which further leads to uneven stress distribution transmitted by the moving end to the connecting plate. Therefore, a fixing plate is set. The fixing plate is set on the longer side of the connecting plate. The fixing plate can enhance the rigidity of the long side of the connecting plate, increase the stress applied to the connecting plate by the moving end, and reduce deformation or affect the final test results due to excessive local stress. By setting the second connecting component, the first plywood and the second support are fixedly connected by the second connecting rod.

[0011] Optionally, the fixing plate includes a first fixing part and a second fixing part that are integrally connected and perpendicular to each other, wherein either the first fixing part or the second fixing part is attached to the second shielding layer, and the other is attached to the connecting plate.

[0012] By adopting the above technical solution, and by setting the first fixing part and the second fixing part, the first fixing part, the second fixing part, the connecting plate and the first shielding layer form a rigid connection frame. While distributing stress evenly, it can improve the bending resistance of the connecting plate in the third direction and reduce the occurrence of twisting of the connecting plate due to uneven stress.

[0013] Optionally, the first connecting assembly is provided with multiple components spaced apart along the second direction. The first connecting assembly includes a first support member and a first connecting rod. One end of the second plywood is located between two first plywoods, and the other end extends to the outside of the first plywood. The first support member is sandwiched between two second plywoods, and the first support member and the two second plywoods are fixedly connected by the first connecting rod.

[0014] By adopting the above technical solution, the second plywood and the first support member are fixed by the first connecting rod.

[0015] Optionally, the anchoring assembly includes a stud and a sleeve, the stud being disposed between the second shielding layer and the second plywood, and the stud being threadedly connected to the sleeve.

[0016] By adopting the above technical solution, and by setting studs and threaded sleeves, the first shielding layer and the second plywood are fixed together.

[0017] Optionally, the anchoring assembly further includes an anchoring plate, which is sleeved on the stud, and the second plywood has a first receiving groove for accommodating the anchoring plate. The second plywood also has a mounting hole for the stud to pass through. The threaded sleeve passes through the mounting hole and abuts against the anchoring plate. The other end of the anchoring plate is fixedly connected to the second shielding layer.

[0018] By adopting the above technical solution, and by setting an anchor plate which is sleeved on the stud, the locking force of the threaded sleeve is further evenly distributed to the second plywood. By increasing the contact area, the local stress concentration that could cause the second plywood to crush or deform is reduced, thereby improving the stability of the anchoring assembly in tensile testing. Secondly, the anchor plate is located in the first receiving groove, which further reduces the lateral displacement or rotation of the stud when it is under force.

[0019] Optionally, the anchoring assembly further includes an abutment plate, which is integrally fixedly sleeved onto the stud. The first plywood has a second receiving groove for accommodating the abutment plate, and the first shielding layer is sandwiched between the abutment plate and the anchoring plate.

[0020] By adopting the above technical solution, and by setting an abutment plate, the second shielding layer is clamped between the abutment plate and the anchoring plate, thereby improving the stability of the first shielding layer.

[0021] Optionally, the anchoring assembly further includes a second locking nut and a nut, the first plywood has a third receiving groove for accommodating the second locking nut, the second locking nut is threadedly connected to the stud, the nut is threadedly sleeved on one end of the stud extending to the outside of the second shielding layer, and one end of the second locking nut abuts against the nut.

[0022] By adopting the above technical solution and by setting a second locking nut and a bolt, the stability of the connection between the first plywood, the second plywood, the first shielding layer, and the second shielding layer is improved.

[0023] Secondly, the testing method for a thin film structure testing fixture provided in this application includes the following steps:

[0024] S1: Install the component under test (1), the first connecting component (2), the anchoring component (3), and the second connecting component (7):

[0025] First, install the first connector between the two second plywoods, and then fix the second plywoods to the first connector using the first support member;

[0026] First, weld the anchor plate to the threaded sleeve and fix it. Then, connect the anchor plate to the second plywood with the core rivet. Next, weld the first shielding layer to the anchor plate and fix it. Align the mounting holes of the first plywood with the mounting holes of the anchor plate. Then, tighten the stud and threaded sleeve to fix it.

[0027] The second support is installed between the two first plywoods and the second support is connected and fixed to the first plywoods. Then the second locking nut and nut are installed, the nut is welded and fixed to the second shielding layer, the fixing plate is welded and fixed to the second shielding layer, and the fixing plate is welded and fixed to the periphery of the connecting plate.

[0028] S2: Start the test:

[0029] The fixed end of the force measuring device is fixedly connected to the first support member, and the movable end of the force measuring device is fixedly connected to the connecting plate. The movable end applies a tensile force to the connecting plate in the third direction to test the stability of the anchoring assembly. After the test is completed, check whether the anchoring assembly can be used normally, check whether the weld between the first shielding layer and the anchoring plate is intact, and check whether the first plywood and the second plywood are damaged.

[0030] By adopting the above technical solution, during the test, the fixed end of the force measuring device is fixed to the first support member, the moving end is fixed to the connecting plate, and an upward pulling force is applied to the connecting plate in the third direction. The moving end moves repeatedly by about 1 mm to simulate the displacement when the liquid inside the storage tank oscillates. After the test is completed, the personnel check whether the anchoring component can be used normally, and check whether the weld between the first shielding layer and the abutment plate is intact, and whether the first plywood and the second plywood are damaged.

[0031] In summary, this application includes at least one of the following beneficial technical effects:

[0032] 1. This application sets up the component under test. During the actual test, a force measuring device applies a tensile force along a third direction to the connecting plate to simulate the displacement when the liquid inside the storage tank oscillates. This causes the second shielding layer to displace relative to the first shielding layer, thereby testing the stability of the anchoring component. By setting up a fixing plate, which is located on the longer side of the connecting plate, the fixing plate can enhance the rigidity of the long side of the connecting plate, increase the stress applied to the connecting plate by the moving end, and reduce deformation or impact on the final test results due to excessive local stress.

[0033] 2. This application, by setting an anchor plate which is sleeved on the stud, further distributes the locking force of the threaded sleeve evenly to the second plywood. By increasing the contact area, it reduces the local stress concentration that could cause the second plywood to crush or deform, thereby improving the stability of the anchoring assembly in tensile testing. Secondly, the anchor plate is located in the first receiving groove, further reducing the lateral displacement or rotation of the stud when it is under force.

[0034] 3. This application improves the stability of the first shielding layer by setting an abutment plate and clamping the second shielding layer between the abutment plate and the anchoring plate. Attached Figure Description

[0035] Figure 1 This is a schematic diagram of the structure of a thin film structure testing fixture according to this application;

[0036] Figure 2 This is a front view of the component under test and the anchoring component in this application;

[0037] Figure 3 This is a cross-sectional view of the anchoring component of this application.

[0038] Explanation of reference numerals in the attached drawings: 1. Component under test; 11. First plywood; 111. Mounting groove; 112. Second receiving groove; 113. Third receiving groove; 12. Second plywood; 121. First receiving groove; 122. Mounting hole; 13. First shielding layer; 14. Second shielding layer; 2. First connecting assembly; 21. First support member; 22. First connecting rod; 23. First locking nut; 3. Anchoring assembly; 31. Stud; 32. Sleeve; 33. Anchoring plate; 34. Abutment plate; 35. Second locking nut; 36. Nut; 37. Flat washer; 38. Driven rivet; 4. Connecting plate; 5. Fixing plate; 51. First fixing part; 52. Second fixing part; 6. Force measuring device; 61. Fixed end; 62. Moving end; 7. Second connecting assembly; 71. Second support member; 72. Second connecting rod. Detailed Implementation

[0039] The following is in conjunction with the appendix Figure 1-3 This application will be described in further detail.

[0040] This application discloses a thin film structure testing fixture. For ease of description, this application introduces directional terms such as first direction, second direction and third direction to form a three-dimensional reference direction. The directional terms used, such as "first direction, second direction and third direction", can be specifically referred to in the figure. The first direction is represented by X, the second direction by Y, and the third direction by Z. The first direction, the second direction and the third direction are perpendicular to each other.

[0041] Reference Figure 1The thin-film structure testing fixture includes two test components 1 spaced apart along a first direction, and the two test components 1 are symmetrically arranged. Each test component 1 includes a first plywood 11 and a second plywood 12. A first shielding layer 13 is sandwiched between the first plywood 11 and the second plywood 12. Two second plywoods 12 are located on the side of the two first plywoods 11 that are close to each other. A second shielding layer 14 is located on the side of the first plywood 11 that is away from the second plywood 12. A first connecting component 2 is provided between the two second plywoods 12. Each first shielding layer 13 and each second plywood 12 are fixed together by an anchoring component 3. The two second shielding layers 14 are fixedly connected by a connecting plate 4, and the connecting plate 4 is located on the second shielding layer 14 away from the first connecting component 2. On one side of the connecting component 2, a fixing plate 5 is fixedly connected between the connecting plate 4 and each second shielding layer 14, and multiple fixing plates 5 are spaced apart along the second direction. The connecting plate 4 has a rectangular cross-section, and the fixing plates 5 are located on the side of the connecting plate 4 with a longer plate length. In this embodiment, two fixing plates 5 are spaced apart along the second direction. The second shielding layer 14, the first plywood 11, the first shielding layer 13, and the second plywood 12 correspond to the main shielding, plywood, secondary shielding, and plywood structure of the storage tank system. The anchoring component 3 connects the first shielding layer 13 and the second plywood 12. During simulation testing, a tensile force along the third direction is applied to the connecting plate 4 by the force measuring device 6 to simulate the displacement when the liquid inside the storage tank oscillates, thereby testing the stability of the anchoring component 3.

[0042] Reference Figure 1 The force measuring device 6 includes a fixed end 61 and a movable end 62. The fixed end 61 is fixedly connected to the first connecting component 2 and remains stationary. The movable end 62 is fixedly connected to the connecting plate 4 and applies a tensile force to the connecting plate 4 in a third direction. Since the connecting plate 4 is a rectangular plate, the center position of the movable end 62 and the connecting plate 4 is fixed. However, the distance between the movable end 62 and the four sides of the connecting plate 4 is different. The distance from the movable end 62 to the longer edge of the connecting plate 4 is shorter, which further leads to uneven stress distribution transmitted by the movable end 62 to the connecting plate 4. Therefore, a fixed plate 5 is set on the side of the connecting plate 4 with a longer plate length. The fixed plate 5 can enhance the rigidity of the longer side of the connecting plate 4, increase the stress applied to the connecting plate 4 by the movable end 62, and reduce deformation or impact on the final test results due to excessive local stress.

[0043] Reference Figure 1Specifically, the fixing plate 5 includes a first fixing part 51 and a second fixing part 52 that are integrally connected and perpendicular to each other. Either the first fixing part 51 or the second fixing part 52 is attached to the first shielding layer 13, and the other is attached to the connecting plate 4. In this embodiment, the first fixing part 51 is attached and fixed to the second shielding layer 14, and the second fixing part 52 is attached and fixed to the connecting plate 4. The first fixing part 51, the second fixing part 52, the connecting plate 4 and the first shielding layer 13 form a rigid link frame, which can improve the bending resistance of the connecting plate 4 in the third direction while distributing stress evenly, and reduce the occurrence of twisting of the connecting plate 4 due to uneven stress.

[0044] Reference Figure 1 The first connecting assembly 2 is provided with multiple components spaced apart along the second direction. The first connecting assembly 2 includes a first support member 21 and a first connecting rod 22. One end of the second plywood 12 is located between two first plywoods 11, and the other end extends to the outside of the first plywood 11. The first shielding layer 13 is located between the contact surfaces of the second plywood 12 and the first plywood 11. The first support member 21 is sandwiched between two second plywoods 12. The first support member 21 and the two second plywoods 12 are fixedly connected by the first connecting rod 22. Parallel to the first direction, the fixed end 61 is fixedly connected to the first support member 21; in the internal structure of the storage tank, a heat insulation module is also provided below the first shielding layer 13. The first support member 21 can be regarded as the heat insulation module. In some embodiments, the first connecting rod 22 can be a screw, stud, bolt or screw. In this embodiment, the first connecting rod 22 is a bolt. The first connecting rod 22 is threadedly connected to the first locking nut 23, so that the second plywood 12 and the first support member 21 are fixed by the first connecting rod 22 and the first locking nut 23.

[0045] Reference Figure 1 Two first plywoods 11 are fixed together by a second connecting assembly 7. Multiple second connecting assemblies 7 are spaced apart along a second direction. Each second connecting assembly 7 includes a second support member 71 and a second connecting rod 72. The second support member 71 is sandwiched between the two first plywoods 11. Each first plywood 11 and the second support member 71 are fixedly connected by the second connecting rod 72. In the first embodiment, the second connecting rod 72 can be a screw, stud, bolt, or bolt. In this embodiment, the second connecting rod 72 is a bolt. A mounting groove 111 is provided on the side of the first plywood 11 near the second shielding layer 14. One end of the second connecting rod 72 is located in the mounting groove 111, and the other end passes through the first plywood 11 and the second support member 71. The second connecting rod 72 is threadedly connected to the first plywood 11 and the second support member 71. In this embodiment, both the first support member 21 and the second support member 71 have a rectangular frame structure.

[0046] Reference Figure 2 and Figure 3The anchoring component 3 includes a stud 31 and a sleeve 32. The stud 31 passes between the second shielding layer 14 and the second plywood 12, and the sleeve 32 is threaded to the stud 31. The stud 31 and the sleeve 32 fix the first shielding layer 13 and the second plywood 12.

[0047] Reference Figure 3 To further improve the stability of the anchoring assembly 3, the anchoring assembly 3 also includes an anchoring plate 33, which is sleeved on the stud 31. The anchoring plate 33 and the second plywood 12 are fixed together by a core rivet 38. The second plywood 12 has a first receiving groove 121 for receiving the anchoring plate 33 and a mounting hole 122 for the stud 31 to pass through. The threaded sleeve 32 passes through the mounting hole 122 and abuts against the anchoring plate 33. The threaded sleeve 32 is welded to the anchoring plate 33. The anchor plate 33 is fixed to the first shielding layer 13 on the other side. The anchor plate 33 is sleeved on the stud 31, which further distributes the locking force of the screw sleeve 32 evenly to the second plywood 12. By increasing the contact area, the local stress concentration that causes the second plywood 12 to be crushed or deformed is reduced, thereby improving the stability of the anchor assembly 3 in the tensile test. Secondly, the anchor plate 33 is located in the first receiving groove 121, which further reduces the lateral displacement or rotation of the stud 31 when it is subjected to force.

[0048] Reference Figure 3 To improve the stability of the first shielding layer 13, the anchoring assembly 3 also includes an abutment plate 34, which is integrally fixedly sleeved onto the stud 31. The first plywood 11 has a second receiving groove 112 for receiving the abutment plate 34. The first shielding layer 13 is clamped between the abutment plate 34 and the anchoring plate 33. In the actual test, the abutment plate 34 is welded to the first shielding layer 13. After the test is completed, the integrity of the weld needs to be checked after the first shielding layer 13 and the first plywood 11 are removed.

[0049] Reference Figure 3To improve the stability of the connection between the first plywood 11, the second plywood 12, the first shielding layer 13, and the first shielding layer 12, the anchoring assembly 3 further includes a second locking nut 35 and a nut 36. The first plywood 11 has a third receiving groove 113 for accommodating the second locking nut 35. The third receiving groove 113, the second receiving groove 112, and the first receiving groove 121 are all connected in the first direction. The second locking nut 35 is threaded to the stud 31, and the nut 36 is threaded onto the stud 31 and extends to the first... One end of the outer side of the shielding layer 13 abuts against the side wall of the first shielding layer 13. One end of the second locking nut 35 abuts against the nut 36. The bottom wall of the second locking nut 35 is provided with a flat washer 37. The flat washer 37 is sleeved on the stud 31 and abuts against the groove wall of the third receiving groove 113. The flat washer 37 increases the contact area between the second locking nut 35 and the groove wall of the third receiving groove 113, so that the locking force of the second locking nut 35 is evenly transmitted to the first plywood 11, avoiding local stress concentration that could cause the first plywood 11 to be crushed or deformed.

[0050] The implementation principle of a thin-film structure testing fixture in this application embodiment is as follows: During testing, the fixed end 61 of the force measuring device 6 is fixed to the first support member 21, the moving end 62 is fixed to the connecting plate 4, and an upward pulling force is applied to the connecting plate 4 in the third direction. The moving end 62 moves repeatedly by about 1 mm to simulate the displacement when the liquid inside the storage tank oscillates. After the test is completed, the personnel check whether the anchoring component 3 can be used normally and check whether the weld between the first shielding layer 13 and the abutment plate 34 is complete.

[0051] This application also discloses a testing method for a thin film structure testing fixture, comprising the following steps:

[0052] S1: Install the component under test 1, the first connecting component 2, the anchoring component 3, and the second connecting component 7:

[0053] First, install the first connector between the two second plywoods 12, and fix the second plywoods 12 to the first connector through the first support member 21;

[0054] First, weld and fix the anchor plate 33 to the threaded sleeve 32. Then, connect the anchor plate 33 to the second plywood 12 with the core rivet 38. Next, weld and fix the first shielding layer 13 to the anchor plate 33. Align the mounting holes of the first plywood 11 with the mounting holes of the anchor plate 33. Then, tighten and fix the stud 31 and the threaded sleeve 32.

[0055] The second support 71 is installed between the two first plywoods 11, and the second support 71 is connected and fixed to the first plywoods 11. Then, the second locking nut 35 and the nut 36 are installed, the nut 36 is welded and fixed to the second shielding layer 14, the fixing plate 5 is welded and fixed to the second shielding layer 14, and the fixing plate 5 is welded and fixed to the periphery of the connecting plate 4.

[0056] S2: Start the test:

[0057] The fixed end 61 of the force measuring device 6 is fixedly connected to the first support member 21, and the moving end 62 of the force measuring device 6 is fixedly connected to the connecting plate 4. The moving end 62 applies a tensile force to the connecting plate 4 in the third direction to test the stability of the anchoring assembly 3. After the test is completed, check whether the anchoring assembly 3 can be used normally, check whether the weld between the first shielding layer 13 and the anchoring plate 33 is intact, and check whether the first plywood 11 and the second plywood 12 are damaged.

[0058] The above are all preferred embodiments of this application, and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.

Claims

1. A thin film structure testing fixture, characterized in that: It includes two test components (1) spaced apart along a first direction, and the two test components (1) are symmetrically arranged. The test component (1) includes a first plywood (11) and a second plywood (12). A first shielding layer (13) is sandwiched between the first plywood (11) and the second plywood (12). Two second plywoods (12) are located on the side of the two first plywoods (11) that are close to each other. A second shielding layer (14) is provided on the side of the first plywood (11) that is away from the second plywood (12). Two second plywoods (12) are connected by a first connecting component (2). Each first shielding layer (13) and the second plywood (12) are fixed by an anchoring component (3). Two second shielding layers (14) are fixed by a connecting plate (4). The connecting plate (4) is located on the side of the second shielding layer (14) that is away from the first connecting component (2). A fixing plate (5) is fixedly connected between the connecting plate (4) and each second shielding layer (14). Multiple fixing plates (5) are spaced apart along the second direction. It also includes a force measuring device (6), which includes a fixed end (61) and a movable end (62). The fixed end (61) is fixedly connected to the first connecting component (2), and the movable end (62) is fixedly connected to the connecting plate (4) and applies a tensile force to the connecting plate (4) in a third direction. Two first plywoods (11) are fixed together by a second connecting assembly (7). The second connecting assembly (7) is provided with multiple members spaced apart along a second direction. The second connecting assembly (7) includes a second support member (71) and a second connecting rod (72). The second support member (71) is sandwiched between two first plywoods (11). Each first plywood (11) and the second support member (71) are fixedly connected by the second connecting rod (72).

2. The thin film structure testing fixture according to claim 1, characterized in that: The fixing plate (5) includes a first fixing part (51) and a second fixing part (52) that are integrally connected and perpendicular to each other. Either the first fixing part (51) or the second fixing part (52) is attached to the second shielding layer (14), and the other is attached to the connecting plate (4).

3. The thin film structure testing fixture according to claim 1, characterized in that: The first connecting assembly (2) is provided with a plurality of spaced-apart components along the second direction. The first connecting assembly (2) includes a first support member (21) and a first connecting rod (22). One end of the second plywood (12) is located between two first plywoods (11), and the other end extends to the outside of the first plywood (11). The first support member (21) is sandwiched between two second plywoods (12). The first support member (21) and the two second plywoods (12) are fixedly connected by the first connecting rod (22).

4. The thin film structure testing fixture according to claim 1, characterized in that: The anchoring assembly (3) includes a stud (31) and a sleeve (32). The stud (31) passes between the second shielding layer (14) and the second plywood (12), and the stud (31) is threaded to the sleeve (32).

5. The thin film structure testing fixture according to claim 4, characterized in that: The anchoring assembly (3) further includes an anchoring plate (33), which is sleeved on the stud (31). The second plywood (12) has a first receiving groove (121) for receiving the anchoring plate (33), and the second plywood (12) has a mounting hole (122) for the stud (31) to pass through. The threaded sleeve (32) passes through the mounting hole (122) and abuts against the anchoring plate (33). The other end of the anchoring plate (33) is fixedly connected to the second shielding layer (14).

6. The thin film structure testing fixture according to claim 5, characterized in that: The anchoring assembly (3) further includes an abutment plate (34), which is integrally fixedly sleeved on the stud (31). The first plywood (11) has a second receiving groove (112) for accommodating the abutment plate (34), and the first shielding layer (13) is sandwiched between the abutment plate (34) and the anchoring plate (33).

7. The thin film structure testing fixture according to claim 4, characterized in that: The anchoring assembly (3) further includes a second locking nut (35) and a nut (36). The first plywood (11) has a third receiving groove (113) for receiving the second locking nut (35). The second locking nut (35) is threaded to the stud (31). The nut (36) is threaded onto one end of the stud (31) extending to the outside of the second shielding layer (14). One end of the second locking nut (35) abuts against the nut (36).

8. A testing method for a thin film structure testing fixture, wherein the thin film structure testing fixture is provided according to any one of claims 1-7, characterized in that: Includes the following steps: S1: Install the component under test (1), the first connecting component (2), the anchoring component (3), and the second connecting component (7): First, install the first connector between the two second plywoods (12) and fix the second plywoods (12) to the first connector by the first support (21); First, weld and fix the anchor plate (33) to the threaded sleeve (32). Then, connect the anchor plate (33) to the second plywood (12) with the core rivet (38). Next, weld and fix the first shielding layer (13) to the anchor plate (33). Align the mounting holes of the first plywood (11) with the mounting holes of the anchor plate (33). Then, tighten and fix the stud (31) and the threaded sleeve (32). Install the second support member (71) between the two first plywoods (11) and connect and fix the second support member (71) to the first plywoods (11). Then install the second locking nut (35) and the nut (36). Weld the nut (36) to the second shielding layer (14) and weld the fixing plate (5) to the second shielding layer (14). Weld the fixing plate (5) to the connecting plate (4) around the perimeter. S2: Start the test: The fixed end (61) of the force measuring device (6) is fixedly connected to the first support member (21), and the moving end (62) of the force measuring device (6) is fixedly connected to the connecting plate (4). The moving end (62) applies a tensile force to the connecting plate (4) along the third direction to test the stability of the anchoring assembly (3). After the test is completed, check whether the anchoring assembly (3) can be used normally, check whether the weld between the first shielding layer (13) and the anchoring plate (33) is complete, and check whether the first plywood (11) and the second plywood (12) are damaged.

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