Device and method for testing penetration resistance of sample
Through the testing device and method for adjusting the sample gap and inclination, the problem that the material anti-invasion test results in the prior art cannot represent the performance of the protective product is solved, which improves the flexibility and accuracy of the test, and reduces product development and mass production. risk.
Patent Information
- Application Number
- CN202411813590.X
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2024-12-10
- Publication Date
- 2025-01-10
AI Technical Summary
The results of existing materials' anti-invasion tests cannot accurately represent the anti-invasion performance of protective products, resulting in multiple tests before mass production. If penetration or cracking fails, it needs to be redesigned and developed, which seriously affects the development progress and mass production. time.
Provide a sample anti-invasion performance test device and method. By adjusting the gap and inclination of the sample, it simulates the actual use conditions of the protective product and tests its anti-invasion performance, including mounting frames, adjustment components, emitters, speedometers and imaging. The sample gap and inclination angle can be independently adjusted to meet different test needs.
It improves the flexibility and accuracy of testing, and can test the sample's anti-invasion performance under different gaps and inclination effects, reduces the number of redesigns and developments, and shortens the time to market.
Smart Images
Figure CN119290626A_ABST
Abstract
Description
Technical Field
[0001] The present application relates to the technical field of material mechanical property testing, and in particular to a device and method for testing the anti-penetration performance of a sample. Background Art
[0002] The anti-penetration effect mainly refers to the influence of factors such as the structure of protective products and anti-ballistic materials on the anti-penetration performance. The anti-penetration effect mainly includes the inclination effect, gap effect, thickness effect, size effect, shape effect and direction effect, among which the inclination effect and gap effect are most closely related to the structure of protective products and have the greatest impact on the anti-penetration performance of products. Even if the material (such as steel plate, titanium plate, ceramic plate, etc.) does not fail due to penetration or cracking during the anti-ballistic test, after the material is made into the structure of the protective product, due to the influence of the gap effect and inclination effect, the protective product may fail due to penetration or cracking during the anti-penetration test. The results of the material anti-penetration test cannot accurately represent the anti-penetration performance of the protective product. Therefore, before mass production, protective products generally must undergo anti-penetration tests to finally confirm their anti-penetration performance. However, when the product is tested for anti-penetration, the product has already gone through a long development cycle. If penetration or cracking failure occurs at this time, the product needs to be redesigned and developed, which seriously affects the product development progress and mass production time node, resulting in great losses. Summary of the invention
[0003] Based on this, the present application provides a sample anti-penetration performance testing device and method, which are used to test the anti-penetration performance of the sample to be tested by combining the gap effect and inclination effect of the sample to be tested.
[0004] In a first aspect, the present application provides a sample anti-penetration performance testing device, the device comprising:
[0005] A mounting bracket for fixing the adjustment assembly;
[0006] An adjustment component, disposed on the mounting frame, for fixing and adjusting the inclination angle and the gap between the first sample to be tested and the second sample to be tested;
[0007] The launching member is arranged opposite to the mounting frame and is used for launching the penetrator; the launching path of the penetrator is located on the same horizontal plane as the center point of the first sample to be tested and / or the second sample to be tested, and is adjusted so that the landing point of the penetrator is as close as possible to the center point of the first sample to be tested and / or the second sample to be tested.
[0008] In one embodiment, the mounting frame includes a first mounting plate and a second mounting plate, and the first mounting plate and the second mounting plate are provided with sliding grooves.
[0009] In one embodiment, a protective member is further included, the protective member comprising:
[0010] a first sub-protection member, an observation hole located between the slide grooves of the first mounting plate;
[0011] The second sub-protection member is located at an end of the mounting frame in the second direction.
[0012] In one embodiment, the adjustment assembly includes a plurality of adjustment members, which are inserted into the slide slots and slide along the first direction for adjustment; the adjustment members include:
[0013] A sliding part connected to the mounting frame, used to adjust the position of the adjusting member on the mounting frame and to adjust the distance between the first sample to be tested and the second sample to be tested;
[0014] The rotating part is rotatably connected to the sliding part and fixedly connected to the first sample to be tested and the second sample to be tested, and is used to adjust the inclination angle of the first sample to be tested and / or the second sample to be tested.
[0015] In one embodiment, it also includes:
[0016] The speed meter is located at one end of the mounting frame close to the launcher in the first direction and is used to measure the flight speed of the penetrator.
[0017] In one embodiment, it also includes:
[0018] A first imaging element is placed below the first mounting plate in the mounting frame and is used to collect the flight trajectory in the horizontal direction during the penetration process and the changes of the sample during the penetration process;
[0019] The second imaging element is placed on the side of the mounting frame and is used to collect the vertical flight trajectory of the penetrator and the changes of the first sample to be tested and the second sample to be tested during the penetration process.
[0020] In one embodiment, a dimension of the first mounting plate along the first direction is greater than a dimension of the second mounting plate.
[0021] In a second aspect, the present application provides a method for testing the anti-penetration performance of a sample, which is applied to any product anti-penetration performance testing device provided in the first aspect, and the method comprises:
[0022] Obtain a test angle and a test gap; the test angle is the angle on the extension line between the first sample to be tested and the second sample to be tested, and the test gap is the interval distance between the center point of the first sample to be tested and the center point of the second sample to be tested;
[0023] Adjust the position of the launcher relative to the mounting frame so that the launch trajectory of the penetrator is always in the horizontal plane where the midpoint of the first sample to be tested and / or the center of the second sample to be tested are located, and the landing point of the penetrator is as close as possible to the center of the first sample to be tested and / or the center of the second sample to be tested;
[0024] Collecting the flight trajectory of the penetrating object in the horizontal direction and the vertical direction and the changes of the first sample to be tested and the second sample to be tested during the penetration process according to the first imaging element and the second imaging element;
[0025] The ability of the first sample to be tested and / or the second sample to be tested to resist the penetrating body under the test inclination angle and the test gap is analyzed.
[0026] In one embodiment, the sample anti-penetration performance testing device further includes a velocimeter, and the method further includes:
[0027] According to the target speed of the penetrator, the distance between the launcher and the speed meter is adjusted so that the actual speed of the penetrator is equal to the target speed.
[0028] In one of the embodiments, the method further includes adjusting the position of the launch component according to the test requirements so that the launch trajectory of the penetrator has an angle of incidence.
[0029] In the above-mentioned sample anti-penetration performance testing device and method, the gap and inclination angle of the first sample to be tested and the second sample to be tested can be adjusted independently without interfering with each other, so that during the test process, the gap between the samples and the inclination angle between the samples and the mounting frame can be flexibly adjusted according to different test requirements, thereby improving the adaptability of the device; the adjustment component fixes the multiple samples to be tested on the mounting frame in an adjustable manner, which can realize the anti-penetration test of the first sample to be tested and the second sample to be tested under different gap effects and inclination effects, and can also realize the anti-penetration performance test of multi-layer structural materials, thereby improving the flexibility and accuracy of the test. BRIEF DESCRIPTION OF THE DRAWINGS
[0030] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the conventional technology, the drawings required for use in the embodiments or the conventional technology descriptions are briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.
[0031] FIG1 is a schematic diagram of the structure of a sample anti-penetration performance testing device in some embodiments of the present application.
[0032] FIG. 2 is a front view of a test of gap effect and tilt angle effect under horizontal direct light conditions in some embodiments of the present application.
[0033] FIG. 3 is a schematic diagram of the structure of a first mounting plate in some embodiments of the present application.
[0034] FIG. 4 is a schematic diagram of the structure of a second mounting plate in some embodiments of the present application.
[0035] FIG. 5 is a schematic diagram of an adjusting member when a first sample to be tested and a second sample to be tested are vertically installed in some embodiments of the present application.
[0036] FIG. 6 is a schematic diagram of an adjusting member when the first sample to be tested and the second sample to be tested are installed at an inclination angle in some embodiments of the present application.
[0037] FIG. 7 is a schematic diagram of the structure of the sliding part in some embodiments of the present application.
[0038] FIG. 8 is a schematic diagram of the structure of a rotating part in some embodiments of the present application.
[0039] FIG. 9 is a schematic diagram of the structures of the first sample to be tested and the second sample to be tested in some embodiments of the present application.
[0040] FIG. 10 is a schematic diagram of the structure of a double-section column in some embodiments of the present application.
[0041] FIG. 11 is a schematic diagram of the structure of a single-section column in some embodiments of the present application.
[0042] FIG12 is a flow chart of an anti-penetration performance testing method in some embodiments of the present application.
[0043] FIG. 13 is a schematic diagram of the structure of a gap effect test under horizontal direct light conditions in some embodiments of the present application.
[0044] FIG. 14 is a front view of a gap effect test under horizontal direct light conditions in some embodiments of the present application.
[0045] FIG. 15 is a top view of some embodiments of the present application under horizontal angle incidence conditions.
[0046] FIG. 16 is a schematic diagram of the tilt effect and gap effect test under horizontal direct radiation conditions in some embodiments of the present application.
[0047] Description of Figure Numbers:
[0048] 102, adjusting member; 104, sliding portion; 106, rotating portion; 108, U-shaped through hole; 110, first fixing hole; 112, second fixing hole; 114, connecting rod; 116, abutting portion; 118, first mounting plate; 120, second mounting plate; 122, slide groove; 124, speed meter; 126, first imaging member; 128, second imaging member; 130, first sub-protective member; 131, second sub-protective member; 132, double-section column; 134, single-section column; 136, flange; 138, mounting groove; 140, observation hole; 202, first sample to be tested; 204, second sample to be tested; 302, transmitting member. DETAILED DESCRIPTION
[0049] In order to make the above-mentioned purposes, features and advantages of the present application more obvious and easy to understand, the specific implementation methods of the present application are described in detail below in conjunction with the accompanying drawings. In the following description, many specific details are set forth to facilitate a full understanding of the present application. However, the present application can be implemented in many other ways different from those described herein, and those skilled in the art can make similar improvements without violating the connotation of the present application, so the present application is not limited by the specific embodiments disclosed below.
[0050] In the description of the present application, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present application.
[0051] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In the description of this application, the meaning of "plurality" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined.
[0052] In this application, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it 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.
[0053] In the present application, unless otherwise clearly specified and limited, a first feature being “above” or “below” a second feature may mean that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Moreover, a first feature being “above”, “above”, and “above” a second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. A first feature being “below”, “below”, and “below” a second feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is lower in level than the second feature.
[0054] It should be noted that when an element is referred to as being "fixed to" or "disposed on" another element, it may be directly on the other element or there may be a central element. When an element is considered to be "connected to" another element, it may be directly connected to the other element or there may be a central element at the same time. The terms "vertical", "horizontal", "upper", "lower", "left", "right" and similar expressions used herein are for illustrative purposes only and are not intended to be the only implementation method.
[0055] In a first aspect, referring to FIG. 1 and FIG. 2 , an embodiment of the present application provides a sample anti-penetration performance testing device, including a mounting frame, an adjustment assembly and a launcher 302 .
[0056] Among them, the mounting frame is used to fix the adjustment component; the adjustment component is arranged on the mounting frame, and is used to fix and adjust the inclination angle and gap between the first sample to be tested 202 and the second sample to be tested 204; the launcher 302 is arranged opposite to the mounting frame, and is used to launch the penetrator, and the launch path of the penetrator is located on the same horizontal plane as the center point of the first sample to be tested and / or the second sample to be tested, and the landing point of the penetrator is as close as possible to the center point of the first sample to be tested and / or the second sample to be tested.
[0057] Specifically, the first sample 202 to be tested and the second sample 204 to be tested are fixed on the adjustment assembly respectively, and the positions and angles of the first sample 202 to be tested and the second sample 204 to be tested on the mounting frame can be adjusted independently without affecting each other. Before the test, according to the test requirements, the gap between the first sample 202 to be tested and the second sample 204 to be tested and the angle between the first sample 202 to be tested and the second sample 204 to be tested are adjusted. After the adjustment is completed, the adjustment assembly is fixed on the mounting frame to fix the first sample 202 to be tested and the second sample 204 to be tested.
[0058] Exemplarily, the angle between the first sample to be tested 202 and the mounting frame is adjustable, and the angle between the second sample to be tested 204 and the mounting frame is adjustable; the second sample to be tested 204 is arranged adjacent to the first sample to be tested 202, and the second sample to be tested 204 is arranged close to the launcher 302. The launcher 302 is used to launch the penetrator, and the launch path of the penetrator is in the same plane as the center point of the first sample to be tested 202 and the center point of the second sample to be tested 204. The penetrator first impacts the second sample to be tested 204, and if it penetrates the second sample to be tested 204, it further impacts the first sample to be tested 202. Optionally, the landing point of the penetrator should be as close as possible to the center point of the first sample to be tested 202 or the second sample to be tested 204; according to the test needs, a third sample to be tested and a fourth sample to be tested may also be included, and the positions and angles of the third sample to be tested and the fourth sample to be tested on the mounting frame can be adjusted independently without affecting each other.
[0059] In this embodiment, the gap and inclination angle of the first sample to be tested 202 and the second sample to be tested 204 can be adjusted independently without interfering with each other, so that during the test process, the gap between the samples and the inclination angle between the samples and the mounting frame can be flexibly adjusted according to different test requirements, thereby improving the adaptability of the device; the adjustment component connects multiple samples to be tested on the mounting frame in an adjustable manner, which can realize the anti-penetration test of the first sample to be tested 202 and the second sample to be tested 204 under different gap effects and inclination effects, and can also realize the anti-penetration performance test of multi-layer structural materials, thereby improving the flexibility and accuracy of the test.
[0060] In some embodiments, the mounting frame includes a first mounting plate and a second mounting plate, and a slide groove 122 is provided on the first mounting plate 118 and the second mounting plate 120 .
[0061] Please refer to FIG. 3 and FIG. 4. Specifically, the first mounting plate 118 and the second mounting plate 120 are arranged in parallel, and the surfaces opposite to each other of the first mounting plate 118 and the second mounting plate 120 are provided with slide grooves 122; the slide grooves 122 on the first mounting plate 118 are arranged on the first mounting plate 118 along the first direction, and the slide grooves 122 on the second mounting plate 120 are arranged on the second mounting plate 120 along the first direction. The slide grooves 122 on the first mounting plate 118 and the second mounting plate 120 are an even number, and are symmetrically arranged on the first mounting plate 118 and the second mounting plate 120. The sliding portion 104 of the adjusting member 102 is clamped in the slide grooves 122, and the adjusting member 102 adjusts the position and inclination of the first sample 202 and the second sample 204 to be tested along the direction in which the slide grooves 122 are opened.
[0062] Please continue to refer to FIG. 1 . An observation hole 140 is provided on the first mounting plate 118 . The observation hole 140 is used to observe the flight trajectory of the penetrator and the changes of the first sample to be tested and the second sample to be tested during the penetration process in the first direction. The observation hole 140 is embedded with a first sub-protection member 130 . The first sub-protection member 130 is used to protect the first imaging member 126 and prevent the first imaging member 126 from being damaged by the debris generated by the impact. A mounting groove 138 is provided on the opposite surfaces of the first mounting plate 118 and the second mounting plate 120 . The width of the mounting groove 138 is the same as the thickness of the second sub-protection member 131 . The second sub-protection member 131 is installed in the mounting groove 138 to protect the second imaging member 128 and prevent the second imaging member 128 from being damaged by the debris generated by the impact. The first imaging member is placed under the first mounting plate 118 of the mounting frame to collect the flight trajectory in the horizontal direction and the changes of the sample during the penetration process; the second imaging member is placed on the side of the mounting frame to collect the flight trajectory in the vertical direction of the penetrator and the changes of the first sample to be tested and the second sample to be tested during the penetration process.
[0063] Please refer to Figures 5 to 8. The adjustment component includes a plurality of adjustment members 102. The adjustment members 102 are inserted into the slide grooves 122 and slide and adjust along the first direction. The adjustment members 102 include a sliding portion 104 and a rotating portion 106. The sliding portion 104 is connected to the mounting frame and is used to adjust the position of the adjustment member 102 on the mounting frame and adjust the distance between the first sample to be tested 202 and the second sample to be tested 204. The rotating portion 106 is rotatably connected to the sliding portion 104 and is fixedly connected to the first sample to be tested 202 and the second sample to be tested 204, and is used to adjust the inclination angles of the first sample to be tested 202 and the second sample to be tested 204.
[0064] Specifically, the sliding part 104 is a T-shaped structure, the horizontal part of the T-shaped structure is slidably connected to the mounting frame, the vertical part of the T-shaped structure is provided with a U-shaped through hole 108, and the rotating part 106 is rotatably connected to the vertical part of the sliding part 104. A recessed part is provided at one end of the rotating part 106 close to the sliding part 104, and a connecting rod 114 is provided at the end of the recessed part. The size of the recessed part is larger than the size of the vertical part of the sliding part 104, and the size of the recessed part in the vertical direction is larger than the size of the U-shaped through hole 108 of the sliding part 104 in the vertical direction, so that when the connecting rod 114 is set in the U-shaped through hole 108, the rotating part 106 can rotate on the sliding part 104 along the connecting rod 114, thereby adjusting the inclination angle of the first sample 202 to be tested and the second sample 204 to be tested. A contact part 116 is also provided on the rotating part 106, and the contact part 116 is L-shaped and is used to contact the first sample 202 to be tested and the second sample 204 to be tested in the horizontal direction and the vertical direction. Further, the sliding part 104 is provided with a first fixing hole 110 and a second fixing hole 112, the first fixing hole 110 is used to fix the adjusting member 102 on the mounting frame, and the second fixing hole 112 is used to lock the connecting rod 114 to prevent the rotating part 106 from being separated from the sliding part 104 during rotation. The rotating part 106 is provided with a third fixing hole and a fourth fixing hole, which are used to fix the first sample 202 to be tested on the rotating part 106. Optionally, the first fixing hole 110, the second fixing hole 112, the third fixing hole and the fourth fixing hole are screw holes, and the position state of the adjusting member 102 is limited by screw connection. Optionally, the number of samples to be tested is at least 2, as shown in FIG9, and double U-shaped openings 206 are processed on the upper and lower sides of the sample to be tested corresponding to the position of the rotating part 106, and the opening width is slightly larger than the diameter of the two threaded holes on the rotating part 106.
[0065] The speed meter is located at one end of the mounting frame close to the launcher in the first direction, and the speed meter 124 is arranged perpendicular to the first mounting plate 118. The launch path of the penetrator passes through the speed meter 124, and the speed meter 124 measures the flight speed of the penetrator.
[0066] In another embodiment, please refer to FIG. 10 and FIG. 11 , the first mounting plate 118 and the second mounting plate 120 are connected by a double-section column 132, the first mounting plate 118 is provided with 6 through holes, the second mounting plate 120 is provided with 4 grooves, and the through hole size of the first mounting plate 118 is the same as the size of the groove on the second mounting plate 120. The groove on the second mounting plate 120 has the same cross-sectional size as the double-section column 132, and each groove is surrounded by 4 to 8 threaded holes for connecting the double-section column 132 and the second mounting plate 120 by bolts, and the threaded hole size is M10 to M20. The cross-sectional diameter of the double-section column 132 is Ø60 to Ø200. Two flanges 136 are provided on the double-section column 132, which are respectively fitted with the first mounting plate 118 and the second mounting plate 120. There are bolt holes distributed circumferentially on the flange 136. The number of bolt holes is the same as the number of threaded holes on the first mounting plate 118 and the second mounting plate 120, and the size is slightly larger than the size of the threaded holes, Ø12~Ø24; the length between the two flanges 136 is 500mm~1500mm. The remaining two through holes of the first mounting plate 118 are used to connect the single-section column 134. The cross-sectional size of the single-section column 134 is the same as the cross-sectional size of the double-section column 132, which is Ø60~Ø200; the end of the single-section column 134 close to the first mounting plate 118 is provided with a flange 136, and the size of the flange 136 is the same as the flange 136 of the structural double-section column 132. Optionally, the first sub-protection member 130 and the second sub-protection member 131 are protective glass, and the thickness of the protective glass is 30 mm to 60 mm, the length is 200 mm to 600 mm, and the width is 200 mm to 400 mm. The double-section column 132 can adjust the distance between the first mounting plate 118 and the second mounting plate 120, and maintain the parallel setting between the first mounting plate 118 and the second mounting plate 120, and the single-section column 134 and the double-section column 132 are used to carry the mounting frame.
[0067] In a second aspect, an embodiment of the present application provides a method for testing the anti-penetration performance of a product, which is applied to any one of the anti-penetration performance testing devices of the product provided in the first aspect above, refer to FIG. 12 , and the method includes:
[0068] Step 1202, obtaining a test angle and a test gap; the test angle is the angle on the extension line between the first sample to be tested and the second sample to be tested, and the test gap is the interval distance between the center point of the first sample to be tested and the center point of the second sample to be tested.
[0069] Step 1204, adjust the position of the projectile relative to the first sample to be tested and / or the second sample to be tested, so that the flight trajectory of the penetrator is always in the horizontal plane where the midpoint of the first sample to be tested and / or the center of the second sample to be tested are located, and the landing point of the projectile is as close as possible to the center of the first sample to be tested and / or the center of the second sample to be tested.
[0070] Step 1206: Capture the flight trajectory of the penetrating object in the horizontal and vertical directions and the changes of the first sample to be tested and the second sample to be tested during the penetration process according to the first imaging element and the second imaging element.
[0071] Step 1208, analyzing the ability of the first sample to be tested to resist the penetrator under the test inclination angle and the test gap.
[0072] Specifically, taking the double-layer structure of the sample to be tested as an example, according to the incident conditions of the penetrator required by the product protection, the product structure and other information, the measurement angle relationship between the first sample to be tested and the second sample to be tested is analyzed to obtain the measurement angle and the test gap. The first sample to be tested and the second sample to be tested are installed according to the test angle and the test gap. Optionally, the spacing and angle relationship between the first sample to be tested and the second sample to be tested can be freely adjusted.
[0073] Please refer to Figures 13 and 14. In an embodiment of the gap effect test under horizontal direct irradiation conditions, the first sample to be tested and the second sample to be tested are set to be placed parallel to the vertical horizontal plane, that is, there is no angle between the extension lines of the first sample to be tested and the second sample to be tested, and the spacing between the first sample to be tested and the second sample to be tested is adjusted so that the test gap meets the test requirements. The launch path of the penetrator launched by the launcher is adjusted, and the launch path is perpendicular to the plane where the first sample to be tested is located, and the landing point of the penetrator is determined; according to the relationship between the launch distance and the landing speed, the distance between the launcher and the mounting frame is determined to complete the layout of the test device.
[0074] Start the anti-penetration test, with 1 to 5 tests per group. Use the first and second imaging components to collect the flight trajectory of the penetrator in the horizontal and vertical directions, as well as the changes of the first and second samples to be tested during the penetration process, and analyze the impact of the gap effect on the flight trajectory of the penetrator and the anti-penetration ability of the samples to be tested under horizontal direct conditions. If the sample to be tested fails after the test, increase the thickness of the test sample or replace the material of the sample to be tested to improve the anti-penetration ability of the sample to be tested, and then re-test; if the sample to be tested does not fail after the test, the test ends. Among them, failure phenomena include penetration of the sample to be tested, cracking of the sample to be tested, etc.
[0075] Please refer to Figures 1 and 2. In an embodiment of the inclination effect and gap effect test under horizontal direct light conditions, the inclination angle and horizontal gap between the first sample to be tested and the second sample to be tested are calculated, and then the first sample to be tested and the second sample to be tested are measured according to the inclination angle and gap parameters. Taking Figure 16 as an example, the first sample to be tested is set to be placed in a vertical horizontal plane, and according to the test angle, the corresponding different gaps between the center points of the first sample to be tested and the second sample to be tested are obtained by the following formula:
[0076] Li=l+Hi×cotɑ
[0077] In the formula, Li is the gap corresponding to the first sample to be tested and the second sample to be tested; l is the spacing distance between the first sample to be tested and the second sample to be tested on the second mounting plate; Hi is the distance between the midpoints of the first sample to be tested; ɑ is the test angle. According to the above formula, the distance between the first sample to be tested and the second sample to be tested at the impact position is obtained, so that the distance between the first sample to be tested and the second sample to be tested at the impact position meets the requirements of the test gap. Adjust the launch path of the penetrator launched by the launch component, the launch path is perpendicular to the plane where the first sample to be tested is located, and determine the impact position of the penetrator; according to the relationship between the launch distance and the landing speed, determine the distance between the launch component and the mounting frame to complete the layout of the test device.
[0078] Start the anti-penetration test, 1 to 5 times per group of tests, collect the flight trajectory of the penetrator in the horizontal and vertical directions and the changes of the first and second samples to be tested during the penetration process through the first imaging element and the second imaging element, and analyze the influence of the gap effect on the flight trajectory of the penetrator and the anti-penetration ability of the samples to be tested under horizontal direct conditions. If the sample to be tested fails after the test, increase the thickness of the test sample or replace the material of the sample to be tested to improve the anti-penetration ability of the sample to be tested, and then re-test; if the sample to be tested does not fail after the test, the test ends.
[0079] Please refer to Figure 15. In an embodiment of the gap effect test under horizontal angle incidence conditions, the first sample to be tested and the second sample to be tested are set to be placed parallel to the vertical horizontal plane, that is, there is no angle on the extension lines of the first sample to be tested and the second sample to be tested. The spacing between the first sample to be tested and the second sample to be tested is adjusted so that the test gap meets the test requirements. The launch path of the penetrator launched by the launch component is adjusted. The launch path is located in the horizontal plane where the midpoints of the first sample to be tested and the second sample to be tested are located. The launch path and the first sample to be tested have a certain incident angle, so that the penetrator can hit the sample to be tested at a specific angle. According to the relationship between the launch distance and the landing speed, the distance between the launch component and the mounting frame is determined to complete the layout of the test device.
[0080] Start the anti-penetration test, 1 to 5 times per group of tests, collect the flight trajectory of the penetrator in the horizontal and vertical directions and the changes of the first and second samples to be tested during the penetration process through the first imaging element and the second imaging element, and analyze the influence of the gap effect on the flight trajectory of the penetrator and the anti-penetration ability of the samples to be tested under horizontal direct conditions. If the sample to be tested fails after the test, increase the thickness of the test sample or replace the material of the sample to be tested to improve the anti-penetration ability of the sample to be tested, and then re-test; if the sample to be tested does not fail after the test, the test ends.
[0081] In one embodiment, the method further includes adjusting the position of the launch component according to the test requirements so that the launch trajectory of the penetrator has an angle of incidence.
[0082] Specifically, the position of the launcher is adjusted according to the test requirements. When only the launch distance is required, the launcher is arranged according to the launch distance; when there is a requirement for the projectile speed, the speed of the penetrator flying to different distances is measured multiple times by a speed meter. When the flying speed of the penetrator reaches the requirement, the distance between the launch position and the launcher is the launch distance under the speed condition.
[0083] In the description of this specification, the description with reference to the terms "some embodiments", "other embodiments", 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 description of the above terms does not necessarily refer to the same embodiment or example.
[0084] The technical features of the above-described embodiments may be arbitrarily combined. To make the description concise, not all possible combinations of the technical features in the above-described embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.
[0085] The above-described embodiments only express several implementation methods of the present application, and the descriptions thereof are relatively specific and detailed, but they cannot be construed as limiting the scope of the patent application. It should be pointed out that, for a person of ordinary skill in the art, several variations and improvements can be made without departing from the concept of the present application, and these all belong to the protection scope of the present application. Therefore, the protection scope of the patent application shall be subject to the attached claims.
Claims
1. A sample anti-penetration performance testing device, characterized in that: The device comprises: A mounting bracket for fixing the adjustment assembly; An adjustment component, disposed on the mounting frame, for fixing and adjusting the inclination angle and the gap between the first sample to be tested and the second sample to be tested; A launching member is arranged opposite to the mounting frame and is used for launching a penetrator; the launching path of the penetrator is located on the same horizontal plane as the center point of the first sample to be tested and / or the second sample to be tested, and is adjusted so that the landing point of the penetrator is as close as possible to the center point of the first sample to be tested and / or the second sample to be tested.
2. The device according to claim 1, characterized in that The mounting frame includes a first mounting plate and a second mounting plate, and the first mounting plate and the second mounting plate are provided with sliding grooves.
3. The device according to claim 2, characterized in that Also included is a protective member, the protective member comprising: a first sub-protection member, located at an observation hole between the first mounting plate slide grooves; The second sub-protection member is located at an end of the mounting frame in the second direction.
4. The device according to claim 2, characterized in that The adjustment assembly includes a plurality of adjustment members, which are inserted into the slide slots and slide along a first direction for adjustment; the adjustment members include: A sliding portion connected to the mounting frame, used to adjust the position of the adjusting member on the mounting frame and to adjust the distance between the first sample to be tested and the second sample to be tested; The rotating part is rotatably connected to the sliding part and fixedly connected to the first sample to be tested and the second sample to be tested, and is used to adjust the inclination angle of the first sample to be tested and / or the second sample to be tested.
5. The device according to claim 1, characterized in that Also includes: A speed meter is located at one end of the mounting frame close to the launcher in the first direction and is used to measure the flight speed of the penetrator.
6. The device according to claim 3, characterized in that Also includes: A first imaging element, placed below the first mounting plate in the mounting frame, for collecting a horizontal flight trajectory during the penetration process and changes in the sample during the penetration process; The second imaging element is placed on the side of the mounting frame and is used to collect the vertical flight trajectory of the penetrator and the changes of the first sample to be tested and the second sample to be tested during the penetration process.
7. The device according to claim 3, characterized in that A dimension of the first mounting plate along a first direction is greater than a dimension of the second mounting plate.
8. A method for testing the anti-penetration performance of a sample, applicable to the device for testing the anti-penetration performance of a sample according to any one of claims 1 to 7, characterized in that: The method comprises: Obtaining a test angle and a test gap; the test angle is the angle on the extension line between the first sample to be tested and the second sample to be tested, and the test gap is the interval distance between the center point of the first sample to be tested and the center point of the second sample to be tested; Adjusting the position of the launcher relative to the mounting frame so that the launch trajectory of the penetrator is always in the horizontal plane where the midpoint of the first sample to be tested and / or the center of the second sample to be tested are located, and the landing point of the penetrator is as close as possible to the center of the first sample to be tested and / or the center of the second sample to be tested; Collecting the flight trajectory of the penetrating body in the horizontal direction and the vertical direction and the changes of the first sample to be tested and the second sample to be tested during the penetration process according to the first imaging element and the second imaging element; The ability of the first sample to be tested and / or the second sample to be tested to resist the penetrating object under the test inclination angle and the test gap is analyzed.
9. The method according to claim 8, characterized in that The sample anti-penetration performance testing device also includes a velocimeter, and the method also includes: According to the target speed of the penetrating body, the distance between the launching member and the speed meter is adjusted so that the actual speed of the penetrating body is equal to the target speed.
10. The method according to claim 8, characterized in that The method further comprises adjusting the position of the launch component according to the test requirements so that the launch trajectory of the penetrator has an angle of incidence.