Impact test auxiliary device and impact test method

Abstract

The invention discloses an impact test auxiliary device and an impact test method. A plurality of sample laminations are supported in a through groove of at least one supporting piece in the impact test auxiliary device. A plurality of laminated samples are laminated in the thickness direction of the laminated samples and are supported on one side wall of the through groove, the side wall is opposite to the pressing part of the positioning piece, the pressing part of the positioning piece is in threaded fit with the supporting piece, the pressing part can rotate relative to the supporting piece in a threaded mode to extend into the through groove, and when the pressing part rotates relative to the supporting piece, the pressing part can rotate relative to the supporting piece. The clamping part stretches into the through groove to make contact with and press the sample, the sample is pressed on the side wall of the through groove, the clamping part is matched with the torque measuring part, the torque applied to the sample by the pressing part can be measured, the relative movement of the sample possibly caused by temperature change is reduced, accurate impact energy is obtained to accurately feed back impact performance indexes, and the obtained impact performance indexes are more ideal. The technical problem that the impact performance index obtained in the impact test is not ideal enough is solved to a certain extent.

Description

Technical Field

[0001] The present application belongs to the technical field of impact performance detection, and in particular, relates to an impact test auxiliary device and an impact test method. Background Art

[0002] The impact test can break the sample of specified shape and size on the impact tester at one time, and then obtain the impact performance index related to the sample material through the energy consumed by the impact sample and the fracture morphology characteristics, so as to ensure the safety and reliability of the material and related products. The thickness of some plates is small and does not meet the requirements of the impact test. The plates will be stacked to meet the thickness of the impact test for impact testing.

[0003] At present, in order to ensure the relative position between the plates and the accuracy of the results obtained from the impact test, the plates are welded or connected in series by screws when they are stacked. However, welding or threading in series will affect the impact energy obtained in the impact test, making it difficult to obtain a relatively accurate impact energy to accurately feedback the impact performance index, and the obtained impact performance index is not ideal. Summary of the invention

[0004] The present application aims to at least to some extent solve the technical problem that the impact performance index obtained in the impact test is not ideal. To this end, the present application provides an impact test auxiliary device and an impact test method.

[0005] The embodiment of the present application provides an impact test auxiliary device, which is used for positioning a plurality of stacked plate-shaped specimens for impact testing, and includes:

[0006] At least one supporting member, provided with a through slot for stacking a plurality of the samples;

[0007] A positioning member, provided with a pressing portion for cooperating with the support member thread and rotating relative to the support member thread to extend into the through slot, the pressing portion being opposite to a side wall of the through slot;

[0008] The torque measuring member is used to measure the torque applied by the clamping portion to the sample.

[0009] In some embodiments, the support member includes a connecting portion, and two opposite side portions respectively connected to both sides of the connecting portion, the through groove is formed between the two side portions and the connecting portion, and the clamping portion is threadedly engaged with one of the side portions.

[0010] In some embodiments, the side portion is provided with a through hole, and the through hole includes a coaxially connected threaded hole section and a light hole section, the clamping portion is threadedly matched with the threaded hole section, and can rotate relative to the support member to pass through the light hole section and extend into the through groove.

[0011] In some embodiments, the positioning member is a screw and the shaft of the screw is configured as the pressing portion, and the torque measuring member is a torque wrench for cooperating with the screw.

[0012] In some embodiments, at least two of the support members are spaced apart from each other, and the through slots of two adjacent support members extend in the same direction.

[0013] The embodiment of the present application provides an impact test method, which is performed using the impact test auxiliary device according to any one of claims 1 to 5, and the impact test method includes:

[0014] Stacking a plurality of the samples flush with each other and supporting them on the side walls;

[0015] The pressing part is rotated relative to the supporting member until the pressing part presses the sample, and the torque applied to the sample by the pressing part measured by the torque measuring member reaches a torque threshold;

[0016] An impact test was performed on a plurality of stacked test specimens.

[0017] In some embodiments, the total thickness of the plurality of samples stacked and supported on the side wall is 9.5 mm to 10.5 mm, and the torque threshold is 0.2 N·m to 2.0 N·m.

[0018] In some embodiments, the torque threshold increases as the temperature required to perform the impact test decreases.

[0019] In some embodiments, the sample has an impact portion configured to be impacted, and the step of stacking a plurality of the samples flush with each other and supporting them on the side wall comprises:

[0020] At least two of the support members are spaced apart and the extending directions of two adjacent through grooves are the same;

[0021] A plurality of the samples are stacked flush and supported on the side walls of the two supporting members, so that the impact portion of the sample is located between the two supporting members.

[0022] In some embodiments, the specimen has an impact portion configured to be impacted, and the step of performing an impact test on a plurality of stacked specimens comprises:

[0023] Performing an impact test on a plurality of stacked samples to obtain a total impact energy;

[0024] The impact toughness value of the sample is determined according to the total impact energy and the cross-sectional area of ​​the impact portion.

[0025] Advantageous effects provided by one or more embodiments of the present application:

[0026] When it is necessary to conduct an impact test on multiple plate-shaped sample stacks, the multiple sample stacks can be supported in the through slot of at least one support member in the impact test auxiliary device in conjunction with the impact test auxiliary device. Multiple stacked samples can be stacked along their own thickness direction and supported on a side wall of the through slot, which side wall can be the side wall opposite to the clamping portion of the positioning member, the clamping portion of the positioning member is threaded with the support member, and the clamping portion can rotate relative to the support member thread to extend into the through slot, and the clamping portion is opposite to a side wall of the through slot, then when the clamping portion rotates relative to the support member, it can extend into the through slot to contact and clamp the sample, and the multiple samples are pressed against the side wall of the through slot, to prevent the multiple samples from moving relative to each other during the impact test, so as to improve the accuracy of the results obtained by the impact test. In combination with the torque measuring device, the torque applied by the clamping part to the sample can be measured to ensure that the torque applied by the clamping part of the positioning device to the sample reaches a certain level. This can reduce the gap between the sample and the clamping part due to temperature changes (such as thermal expansion and contraction), which may lead to relative movement. The tightening effect is ensured to improve the adaptability to different temperatures and the accuracy of the results obtained from the impact test at different temperatures. A more accurate impact work can be obtained to accurately feedback the impact performance index, and the obtained impact performance index is more ideal, which to a certain extent solves the technical problem that the impact performance index obtained in the impact test is not ideal. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the following is a brief introduction to the drawings required for use in the description of the embodiments. Obviously, the drawings described below are some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0028] Figure 1 A schematic diagram of the use status of an impact test auxiliary device in some embodiments or certain embodiments of the present application is shown.

[0029] Figure 2 A schematic diagram showing the state of a sample stack in some embodiments or certain embodiments of the present application is shown.

[0030] Figure 3 A schematic structural diagram of a support member in some embodiments or certain embodiments of the present application is shown.

[0031] Figure 4 A schematic structural diagram of a torque measuring component in some embodiments or certain embodiments of the present application is shown.

[0032] Figure 5 A flow chart of an impact test method in some embodiments or certain embodiments of the present application is shown.

[0033] Figure 6 A test process diagram of an impact test method in some embodiments or certain embodiments of the present application is shown.

[0034] Reference numerals: 1, support member; 11, through groove; 111, side wall; 12, connecting portion; 13, side portion; 14, through hole; 141, threaded hole section; 2, positioning member; 21, pressing portion; 3, torque measuring member; 10, test specimen; 101, impact portion; DETAILED DESCRIPTION

[0035] The following will be combined with the drawings in the embodiments of the present application to clearly and completely describe the technical solutions in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of this application.

[0036] It should be noted that all directional indications in the embodiments of the present application are only used to explain the relative position relationship, movement status, etc. between the components in a certain specific posture. If the specific posture changes, the directional indication will also change accordingly.

[0037] In this application, unless otherwise clearly specified and limited, the terms "connection", "fixation", etc. should be understood in a broad sense. For example, "fixation" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0038] In addition, in this application, descriptions such as "first", "second", etc. are only used for descriptive purposes and cannot be understood as indicating or implying their relative importance or implicitly indicating the number of technical features indicated. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In addition, the technical solutions between the various embodiments can be combined with each other, but they must be based on the ability of ordinary technicians in this field to implement them. When the combination of technical solutions is contradictory or cannot be implemented, it should be deemed that such combination of technical solutions does not exist and is not within the scope of protection required by this application.

[0039] In the related art, the laminations are connected in series by welding or screws in the impact test, which will affect the impact test results and lead to the technical problem that the obtained impact performance index is not ideal. The embodiment of the present application provides an impact test auxiliary device and an impact test method, which can at least solve the above technical problems to a certain extent.

[0040] The present application is described below with reference to the accompanying drawings and specific embodiments:

[0041] Figure 1 FIG. 1 is a schematic diagram showing a use state of an impact test auxiliary device in some embodiments or certain embodiments of the present application, with reference to FIG. Figure 1 The embodiment of the present application provides an impact test auxiliary device, which is used for positioning a plurality of stacked plate-shaped specimens 10 for impact testing, and includes:

[0042] At least one supporting member 1 is provided with a through slot 11 for stacking a plurality of samples 10 .

[0043] The positioning member 2 is provided with a pressing portion 21 for threadingly cooperating with the supporting member 1 and threadably rotating relative to the supporting member 1 to extend into the through slot 11 . The pressing portion 21 is opposite to a side wall 111 of the through slot 11 .

[0044] The torque measuring member 3 is used to measure the torque applied by the pressing portion 21 to the sample 10 .

[0045] When it is necessary to perform an impact test on multiple plate-shaped stacked specimens 10, the multiple stacked specimens 10 can be supported in the through slot 11 of at least one support member 1 in the impact test auxiliary device in conjunction with the impact test auxiliary device. Multiple stacked specimens 10 can be stacked along their own thickness direction and supported on a side wall 111 of the through slot 11. This side wall 111 can be the side wall 111 opposite to the clamping portion 21 of the positioning member 2. The clamping portion 21 of the positioning member 2 is threadedly matched with the support member 1, and the clamping portion 21 can be threadedly rotated relative to the support member 1 to extend into the through slot 11. The clamping portion 21 is opposite to a side wall 111 of the through slot 11. When the clamping portion 21 rotates relative to the support member 1, it can extend into the through slot 11 to contact and compress the specimen 10, and the multiple specimens 10 are pressed against the side wall 111 of the through slot 11 to prevent the multiple specimens 10 from moving relative to each other during the impact test, so as to improve the accuracy of the results obtained by the impact test. In combination with the torque measuring part 3, the torque applied by the clamping part 21 to the sample 10 can be measured to ensure that the torque applied by the clamping part 21 of the positioning part 2 on the sample 10 reaches a certain level, which can reduce the gap between the sample 10 and the clamping part 21 due to temperature changes (such as thermal expansion and contraction), resulting in possible relative movement, thereby ensuring the tightening effect to improve the adaptability to different temperatures and the accuracy of the results obtained in the impact test at different temperatures, and obtaining a more accurate impact work to accurately feedback the impact performance index, so that the obtained impact performance index is more ideal, and to a certain extent, solves the technical problem that the impact performance index obtained in the impact test is not ideal.

[0046] It should be noted that the sample 10 that needs to be laminated for impact testing is usually difficult to reach the overall thickness required by the impact test due to its own specification requirements or processing requirements, but it is necessary to test the impact toughness, so it is necessary to laminate and perform the impact test as a whole. The through slot 11 in the present application is not closed at both ends in the extension direction, and the through slot 11 has a bottom surface and two side walls 111 distributed on both sides of the bottom surface and opposite to each other. Figure 1 It only illustrates a state in which the sample stack is supported on the side wall of the through slot, and is not used to limit the specific use state of the impact test auxiliary device in a specific impact test.

[0047] For ease of understanding, here is the Figure 2 , Figure 2 A schematic diagram showing the state of a sample stack in some embodiments or certain embodiments of the present application is shown, with reference to Figure 2 It can be seen that the sample 10 has an impact portion 101 for being impacted. The sample 10 can be set to be similar to a rectangular plate, and the impact portion 101 can be a notch set in the middle of the length direction of the rectangular plate. The impact portion 101 set to be a notch can contact a component (such as a pendulum) that provides an impact force, and the sample 10 can be disconnected from the impact portion 101 after receiving a certain impact force. Taking the sample 10 of a rectangular plate with a notch as an example, when the sample 10 needs to be subjected to an impact test, the length, width, and notch of the sample 10 can be stacked flush in the thickness direction of its own plate, wherein the dimensions of multiple samples 10 used for the same impact test are the same, specifically, the width, length, notch shape of each sample 10 and the position of the notch on each sample 10 are the same, and the stacked samples 10 are supported to the side wall 111 of the through groove 11 of the support member 1, and then the sample 10 is pressed by the pressing portion 21 of the positioning member 2. The impact portion 101 of the sample 10, such as a notch, is spaced from the support member 1 to achieve the normal conduct of the impact test.

[0048] It should be noted that, depending on the material to be measured, the sample 10 can also be set as a plate in other shapes besides a rectangular plate, such as a U-shaped plate or a V-shaped plate, etc. In this case, the impact portion 101 of the sample 10 can be the bending part of the U-shaped plate or the V-shaped plate.

[0049] In some embodiments, the cross section of the through slot 11 may be a rectangular shape with one side open, which provides a better support effect for the sample 10 .

[0050] Figure 3 FIG. 1 shows a schematic diagram of a structure of a support member in some embodiments or certain embodiments of the present application, with reference to FIG. Figure 3 It can be seen that in some embodiments, the support member 1 may include a connecting portion 12 and two opposite side portions 13 respectively connected to both sides of the connecting portion 12, a through groove 11 is formed between the two side portions 13 and the connecting portion 12, and the clamping portion 21 is threadedly engaged with one side portion 13.

[0051] The support member 1 includes a connection portion 12 and two side portions 13 distributed on both sides of the connection portion 12, which is easy to prepare and has a good supporting effect. The pressing portion 21 is threadedly matched with one side portion 13, so that the pressing portion 21 can be rotated relative to the side portion 13 of the support member 1 and extended into the through groove 11 to press the sample 10 supported on the side wall 111 of the through groove 11. The surfaces of the two side portions 13 facing each other can be configured as the side wall 111 of the through groove 11.

[0052] In some embodiments, the connecting portion 12 and the side portion 13 may be plates with the same thickness, and both the connecting portion 12 and the side portion 13 may be rectangular plates or square plates, and the two side portions 13 may be connected to both sides of the connecting plate in parallel. The processing cost is low and the supporting and positioning effect of the sample 10, which is also in the shape of a plate, is good, which is conducive to improving the final impact test results.

[0053] In some embodiments, the connecting portion 12 and the side portion 13 of the support member 1 are both plate-shaped, the distance between the two side portions 13 may be 11 mm, and the thickness of the side portion 13 may be 5 mm; in the extension direction of the through slot 11, the width of the support member 1 may be 5 mm to 19 mm. It can be applied to thinner specimens 10, for example, with a single plate thickness of 0.05 mm to 2.5 mm, for impact testing. The total thickness of the specimen 10 after lamination may be 9.5 mm to 10.5 mm, meeting the thickness requirement of the impact test.

[0054] In some embodiments, the support member 1 may be in the shape of a block with a through groove 11 or in the shape of a column with a through groove 11 on the side (the end surfaces at both ends of the column can be used for support), or the thickness of the connecting portion 12 and the side portion 13 may be different, so as to achieve support and positioning of the plate-shaped specimen 10.

[0055] In some embodiments, the side portion 13 is provided with a through hole 14, and the through hole 14 includes a coaxially connected threaded hole section 141 and a light hole section (not shown in the figure), the clamping portion 21 is threadedly matched with the threaded hole section 141, and can rotate relative to the support member 1 to pass through the light hole section and extend into the through groove 11.

[0056] A through hole 14 is provided on the side portion 13, and a threaded hole section 141 of the through hole 14 can be threadably matched with the clamping portion 21. The clamping portion 21 cooperates with the threaded hole section 141, so that the clamping portion 21 can rotate relative to the support member 1 and extend into the through groove 11 through the light hole section. The processing difficulty is low, and it is also easier to achieve when driving the positioning member 2 and the clamping portion 21 to rotate.

[0057] In some embodiments, the side portion 13 may be a rectangular plate, the through hole 14 may pass through the side portion 13, and the axis of the through hole 14 intersects with the intersection of two diagonals of the rectangular plate. The pressing portion 21 entering from the through hole 14 has a better pressing and positioning effect on the sample 10.

[0058] In some embodiments, the threaded hole section 141 is coaxially connected with the light hole section and the axis of the threaded hole section 141 and the axis of the light hole section can extend in the same direction, the axis of the light hole section can be perpendicular to the side wall 111 of the through slot 11 and the axial length can be 3 mm to 10 mm, the axial length of the threaded hole section 141 can be 8 mm, and the threaded hole section 141 is M3. It is easy to prepare and has a good pressing effect.

[0059] Figure 4 FIG. 1 shows a schematic diagram of a torque measuring device in some embodiments or certain embodiments of the present application, with reference to FIG. Figure 3 and Figure 4 In some embodiments, the positioning member 2 is a screw and the shank of the screw is configured as a clamping portion 21, and the torque measuring member 3 is a torque wrench for cooperating with the screw. While the screw is rotated by the torque wrench, the torque applied by the shank of the screw on the specimen 10 can be judged in real time by the torque wrench, which is conducive to improving the efficiency of the impact test.

[0060] It should be noted that the torque applied by the shank of the screw on the sample 10 can be fed back by the torque wrench, and when the torque reaches a certain value, a signal will be sent to indicate that the torque has reached the target value. The torque applied by the torque wrench to the screw is also the torque applied by the screw to the sample 10.

[0061] In some embodiments, the torque measuring member 3 may also be set to a rotation angle of a rod, a handle, etc., and the screw may also be set to a different fastener such as a bolt, which can also achieve torque measurement.

[0062] In some embodiments, the impact test auxiliary device may also include at least two spaced support members 1, and the through slots 11 of two adjacent support members 1 extend in the same direction. This can provide more stable support and positioning for the sample 10 that needs to undergo an impact test, which is beneficial to improving the accuracy of the impact test results.

[0063] Based on the same inventive concept, the present application also provides an impact test method. Figure 5 A flow chart of an impact test method in some embodiments or certain embodiments of the present application is shown, referring to Figure 5 The impact test method may be performed using the impact test auxiliary device as described above, and the impact test method may include:

[0064] S101: Stack multiple specimens flush and support them on the side walls.

[0065] S102: The pressing part is rotated relative to the supporting part until the pressing part presses the sample, until the torque applied to the sample by the pressing part measured by the torque measuring part reaches a torque threshold.

[0066] S103: Perform an impact test on multiple stacked specimens.

[0067] The structure of the impact test auxiliary device and its corresponding technical effects can be referred to above and will not be described in detail here. Before performing an impact test on multiple stacked samples, the pressing part is rotated relative to the support member until the pressing part presses the sample until the torque applied by the pressing part to the sample reaches the torque threshold, and then the impact test is performed. This can ensure the stability of the impact test in a low temperature environment, for example, and is conducive to improving the accuracy of the final impact test results.

[0068] It should be noted that since some materials need to work in low or high temperature environments when used after processing, impact tests need to be carried out in low or high temperature environments to ensure that products made of the same material as the test sample can operate normally at the temperature of the working environment.

[0069] In step S102 of some embodiments, the total thickness of the plurality of samples stacked and supported on the side wall may be 9.5 mm to 10.5 mm, and the torque threshold may be 0.2 N·m to 2.0 N·m.

[0070] The total thickness of the sample is within the above range, and the torque threshold is correspondingly set within the above range, which can ensure that the impact test can be stably performed at different temperatures during the impact test, which is beneficial to improving the accuracy of the results obtained from the impact test.

[0071] In some embodiments, the torque threshold increases as the temperature required for the impact test decreases, which can ensure stable clamping of the experiment and help improve the accuracy of the impact test.

[0072] In step S101 of some embodiments, the sample has an impact portion configured to be impacted, and stacking a plurality of samples flush and supported on a side wall may include:

[0073] At least two supporting members are spaced apart and the extending directions of two adjacent through grooves are the same.

[0074] Multiple specimens are stacked flush and supported on the side walls of two support members so that the impact portion of the specimen is located between the two support members.

[0075] It can improve the stability of the clamped specimen and ensure the stability of the impact test.

[0076] In some embodiments, the spacing between the support members on both sides of the impact part of the sample and the impact part is equal, so that the impact force applied by the impact device to the sample is mainly borne by the sample, thereby improving the accuracy of the results obtained from the impact test.

[0077] For ease of understanding, here is provided Figure 6 , Figure 6 FIG. 1 shows a test process diagram of an impact test method in some embodiments or certain embodiments of the present application, with reference to FIG. Figure 6The sample can be a rectangular plate, the impact part can be a notch, and the two support members can be symmetrically distributed on both sides of the notch along their own length direction. Each support member is provided with a corresponding positioning member to improve the fastening stability of the sample.

[0078] In some embodiments, the distance between the support member and the notch may be 1 mm to 15 mm, and the direction in which the pendulum strikes the sample may be opposite to the opening direction of the through slot, thereby improving the accuracy of the results obtained from the impact test.

[0079] In step S103 of some embodiments, the sample has an impact portion configured to be impacted, and performing an impact test on a plurality of stacked samples may include:

[0080] Impact tests were performed on multiple stacked specimens to obtain the total impact energy.

[0081] The impact toughness value of the sample is determined based on the total impact energy and the cross-sectional area of ​​the impacted portion.

[0082] In some embodiments, the total impact energy obtained from the impact test can be divided by the number of samples to obtain the average impact energy of a single sample, and then the average impact energy of a single sample can be divided by the cross-sectional area of ​​the impact portion to obtain an impact toughness value that can be fed back to each sample. The obtained result has a higher accuracy.

[0083] It should be noted that, according to the material and shape of the sample, a corresponding pendulum impact device or other type of impact device can be selected to perform an impact test on the sample. After the impact test, the total impact energy will be displayed in the impact device. The cross-sectional area can be the product of the sample thickness and the sample ligament width, where the sample ligament width is the difference between the sample width and the notch depth.

[0084] In some embodiments, the total impact work may be divided by the cross-sectional area of ​​the impact portion to obtain the impact toughness value of the sample. The impact toughness value of the sample may also be fed back. In the case of using an impact test auxiliary device, the impact toughness value obtained is also relatively accurate. The impact toughness index may be the impact toughness value.

[0085] It should be noted that the parallel or perpendicular mentioned in the present application is relative to the concept of absolute parallel or absolute perpendicular in geometry, and a deviation of 0 to 5° is allowed, and the present application does not impose any limitation on this.

[0086] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present application. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art may combine and combine different embodiments or examples described in this specification.

[0087] In addition, the technical solutions between the various embodiments can be combined with each other, but they must be based on the fact that they can be implemented by ordinary technicians in this field. When the combination of technical solutions is contradictory or cannot be implemented, it should be deemed that such combination of technical solutions does not exist and is not within the scope of protection required by this application.

[0088] Although the embodiments of the present application have been shown and described, those skilled in the art will appreciate that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present application, and that the scope of the present application is defined by the claims and their equivalents.

Claims

1. An impact test auxiliary device, characterized in that: Applicable to positioning stacked multiple plate-shaped specimens for impact testing, including: At least one supporting member, provided with a through slot for stacking a plurality of the samples; A positioning member, provided with a pressing portion for cooperating with the support member thread and rotating relative to the support member thread to extend into the through slot, wherein the pressing portion is opposite to a side wall of the through slot; The torque measuring member is used to measure the torque applied by the clamping portion to the sample.

2. The impact test auxiliary device according to claim 1, characterized in that: The support member includes a connecting portion and two opposite side portions respectively connected to two sides of the connecting portion, the through groove is formed between the two side portions and the connecting portion, and the pressing portion is threadedly matched with one of the side portions.

3. The impact test auxiliary device according to claim 2, characterized in that: The side portion is provided with a through hole, and the through hole includes a coaxially connected threaded hole section and a light hole section. The pressing portion is threadedly matched with the threaded hole section and can rotate relative to the support member to pass through the light hole section and extend into the through slot.

4. The impact test auxiliary device according to claim 2, characterized in that: The positioning member is a screw, and the rod of the screw is configured as the pressing portion, and the torque measuring member is a torque wrench used to cooperate with the screw.

5. The impact test auxiliary device according to any one of claims 1 to 4, characterized in that: At least two of the support members are spaced apart from each other, and the through slots of two adjacent support members extend in the same direction.

6. An impact test method, characterized in that: The impact test auxiliary device according to any one of claims 1 to 5 is used for the impact test, and the impact test method comprises: Stacking a plurality of the samples flush with each other and supporting them on the side walls; The pressing part is rotated relative to the supporting member until the pressing part presses the sample, and the torque applied to the sample by the pressing part measured by the torque measuring member reaches a torque threshold; An impact test was performed on a plurality of stacked test specimens.

7. The impact test method according to claim 6, characterized in that: The total thickness of the plurality of samples stacked and supported on the side wall is 9.5 mm to 10.5 mm, and the torque threshold is 0.2 N·m to 2.0 N·m.

8. The impact test method according to claim 7, characterized in that: The torque threshold increases as the temperature required to perform the impact test decreases.

9. The impact test method according to any one of claims 6 to 8, characterized in that: The sample has an impact portion configured to be impacted, and the method of stacking a plurality of the samples flush with each other and supporting them on the side wall comprises: At least two of the support members are spaced apart and the extending directions of two adjacent through grooves are the same; A plurality of the samples are stacked flush and supported on the side walls of the two supporting members, so that the impact portion of the sample is located between the two supporting members.

10. The impact test method according to any one of claims 6 to 8, characterized in that: The sample has an impact portion configured to be impacted, and the impact test is performed on a plurality of stacked samples, comprising: Performing an impact test on a plurality of stacked samples to obtain a total impact energy; The impact toughness value of the sample is determined according to the total impact energy and the cross-sectional area of ​​the impact portion.

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