A composite material high-speed dynamic impact test device

Abstract

The application discloses a kind of composite high-speed dynamic impact test devices, it is related to impact experimental device technical field, including pendulum assembly and installation platform, composite material is fixedly installed on installation platform, further include horizontal transfer component to composite material under the impact of pendulum assembly and exert horizontal direction force, horizontal transfer component is limited to slide on installation platform, further include detection device of detection end towards composite material.The height, weight, angle of traditional pendulum assembly are calculated to calculate the stress of composite material in horizontal direction, calculation is complex, and it is difficult to control strength, the mass and speed of the impact plate can be obtained by the device, and the device structure is simple, and the effect is better.

Description

Technical Field

[0001] This invention belongs to the technical field of impact testing devices, and specifically relates to a high-speed dynamic impact testing device for composite materials. Background Technology

[0002] To ensure the quality of a composite material, an impact test is required. The stress of the composite material is measured, and the quality of the composite material is judged by recording the speckle pattern changes.

[0003] However, current pendulum impact testing machines usually directly impact the composite material itself. The impact force of the pendulum impact is dispersed by gravity and is not easy to measure. Moreover, when the pendulum impacts the material, it often only hits a local area of ​​one end face, which leads to uneven stress on the material and affects the test results. Summary of the Invention

[0004] In view of the problems mentioned in the background art, the purpose of this invention is to provide a high-speed dynamic impact testing device for composite materials to solve the problems mentioned in the background art.

[0005] The above-mentioned technical objective of the present invention is achieved through the following technical solution:

[0006] A high-speed dynamic impact testing device for composite materials includes a pendulum assembly and a mounting platform. The composite material is fixedly mounted on the mounting platform. The device also includes a horizontal transfer assembly that applies a horizontal force to the composite material under the impact of the pendulum assembly. The horizontal transfer assembly slides at an upper limit on the mounting platform. The device also includes a detection device with its detection end facing the composite material.

[0007] As a preferred technical solution, the horizontal transfer assembly includes an impact plate that is slidably mounted on a mounting platform, with the contact end of the composite material with the impact plate close to the swing end of the pendulum assembly.

[0008] As a preferred technical solution, the contact end of the composite material is in full contact with the impact plate.

[0009] As a preferred technical solution, the composite material is mounted on the mounting platform via a mounting plate, and the detection device includes a capture camera, which is mounted on the mounting platform directly below the composite material.

[0010] As a preferred technical solution, the horizontal transfer component includes a pulling block and a connecting line two. The two ends of the connecting line two are fixedly connected to the pulling block and the composite material, respectively. The pulling block applies a horizontal force away from the mounting plate to the composite material through the connecting line two.

[0011] As a preferred technical solution, the pendulum assembly includes a pendulum, a connecting line, a lifting plate, and a driving device. The fixed end of the connecting line and the driving device are both mounted on the mounting platform. The lifting plate moves up and down relative to the composite material and is mounted on the driving end of the driving device. The connecting line passes through the lifting plate and is fixedly connected to the pendulum.

[0012] As a preferred technical solution, it also includes a pulley, which is installed on the lifting plate. The connecting line passes around the pulley, and the pulley is installed between the fixed end of the connecting line and the end of the connecting line that contacts the lifting plate.

[0013] As a preferred technical solution, one fixed end of the connecting line is higher than the highest point of the lifting plate.

[0014] Beneficial effects

[0015] Traditional pendulum assemblies calculate the horizontal force on the composite material by measuring the height, weight, and angle of the pendulum. This calculation is complex and the force is difficult to control. This device can obtain the horizontal impact force on the composite material by calculating the mass and velocity of the impact plate. Moreover, the impact plate can completely impact one end face of the composite material during impact, resulting in a more uniform force distribution.

[0016] Additional aspects and advantages of the invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the structure of a high-speed dynamic impact testing device for composite materials proposed in this invention. Figure 1 ;

[0018] Figure 2 This is a schematic diagram of the structure of a high-speed dynamic impact testing device for composite materials proposed in this invention. Figure 2 ;

[0019] Figure 3 This is a schematic diagram of the pendulum assembly structure of a high-speed dynamic impact testing device for composite materials proposed in this invention.

[0020] Reference numerals: 1. Mounting plate; 2. Composite material; 3. Impact plate; 4. Pendulum I; 5. Capture camera; 6. Lifting plate; 7. Connecting line I; 8. Connecting line II; 9. Pulling block; 10. Pendulum II; 11. Mounting platform; 12. Support frame; 13. Drive device; 14. Pulley. Detailed Implementation

[0021] Embodiments of the present invention are described in detail below. Examples of these embodiments are illustrated in the accompanying drawings, wherein the same or similar symbols denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and should not be construed as limiting the present invention.

[0022] Example 1

[0023] refer to Figures 1 to 3 The high-speed dynamic impact testing device for composite materials described in this embodiment includes a mounting platform 11, a composite material 2, and a pendulum assembly. A mounting plate 1 and an impact plate 3 are mounted on the mounting platform 11. The composite material 2 is fixedly mounted on the mounting plate 1. The impact plate 3 slides relative to the mounting plate 1. The pendulum 4 of the pendulum assembly swings freely downward to impact the impact plate 3. The impact plate 3 impacts the composite material 2 horizontally. A detection device is installed directly below the composite material 2, and the detection end of the detection device faces the composite material 2.

[0024] Preferably, when the impact plate 3 impacts the composite material 2, the contact end of the composite material 2 is in complete contact with the impact plate 3.

[0025] Preferably, the detection device includes a capture camera 5, with the camera of the capture camera 5 facing the composite material 2.

[0026] Working principle: The pendulum 4 of the pendulum assembly strikes the impact plate 3. Under the impact force of the pendulum 4, the impact plate 3 slides towards the composite material 2 until it strikes the composite material 2. After receiving a horizontal and uniform impact force, the composite material 2 produces speckle. The capture camera 5 captures the speckle situation in real time.

[0027] Traditional pendulum assemblies calculate the horizontal force on composite material 2 by using the height, weight, and angle of pendulum 4. This calculation is complex and the force is difficult to control. This device can obtain the horizontal impact force on composite material 2 by calculating the mass and velocity of impact plate 3. Moreover, during the impact, impact plate 3 can completely impact one end face of composite material 2, making the force distribution more uniform.

[0028] Example 2

[0029] refer to Figures 1 to 3 The high-speed dynamic impact testing device for composite materials described in this embodiment includes a pull block 9 slidably mounted on a mounting platform 11. A connecting line 2 8 is installed between the pull block 9 and the composite material 2. The pendulum 2 10 of the pendulum assembly pushes the pull block 9 to slide away from the composite material 2. The pull block 9 applies a pulling force away from the mounting plate 1 to the composite material 2 through the connecting line 2 8. A camera 5 is installed below the composite material 2, facing the composite material 2.

[0030] Preferably, the length of the second pendulum 10 is greater than that of the first pendulum 4.

[0031] Working principle: The pendulum 2 10 swings freely until it collides with the pull block 9. The pendulum 2 10 pushes the pull block 9 to slide away from the composite material 2. The pull block 9 applies a pulling force away from the mounting plate 1 to the composite material 2 through the connecting line 2 8. After the composite material 2 is subjected to horizontal pulling force, speckle appears. The capture camera 5 captures the speckle situation in real time.

[0032] Example 3

[0033] refer to Figures 1 to 3 The high-speed dynamic impact testing device for composite materials described in this embodiment has a support frame 12 mounted on a mounting platform 11. The support frame 12 is perpendicular to the mounting platform 11. A pendulum assembly is mounted on the support frame 12. The pendulum assembly includes a pendulum, a connecting line 7, a lifting plate 6, a pulley 14, and a driving device 13. The top end of the connecting line 7 is fixedly connected to the top end of the support frame 12. The pulley 14 is mounted on the lifting plate 6. A through hole is provided in the lifting plate 6. The connecting line 7 extends past the pulley 14, passes through the through hole, and is fixedly connected to the pendulum. The lifting plate 6 is mounted on the output end of the driving device 13.

[0034] Preferably, the drive device 13 includes a motor and a lead screw, the lead screw is vertically mounted on the support frame 12, the lead screw is mounted on the output end of the motor, and the lifting plate 6 is threadedly connected to the lead screw.

[0035] The pendulum consists of pendulum 1 (4) and pendulum 2 (10).

[0036] By changing the length of the pendulum rope, the impact force of the pendulum can be changed. Therefore, when it is necessary to change the length of the pendulum rope, the motor of the drive device 13 drives the lead screw to rotate, and the lead screw drives the lifting plate 6 to rise and fall. When the lifting plate 6 rises, the length of the pendulum rope below the lifting plate 6 increases; when the lifting plate 6 falls, the length of the pendulum rope below the lifting plate 6 becomes shorter. Since the total length of the connecting line 7 is not convenient, the pulley 14 avoids the connecting line 7 from rubbing against the inner wall of the through hole, which would cause damage to the connecting line 7. This makes the connecting line 7 slide more smoothly when the lifting plate 6 rises and falls, while the position of the pendulum remains unchanged.

[0037] It should be understood that the terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," and "circumferential" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on the present invention.

[0038] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this invention, "a plurality of" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0039] In this invention, unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection, an electrical connection, or a connection that allows communication between them; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components, unless otherwise explicitly limited. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0040] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature is in indirect contact with the second feature through an intermediate medium. Furthermore, "above," "over," and "on top" of the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "beneath" of the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

[0041] The above description is only a preferred embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the scope of the technology disclosed in the present invention, based on the technical solution and inventive concept of the present invention, should be covered within the scope of protection of the present invention.

Claims

1. A device for high speed dynamic impact testing of composite materials, comprising a pendulum assembly and a mounting table (11), characterised in that: The installation table (11) is fixedly installed with a composite material (2), further comprising a horizontal transfer assembly for applying a horizontal force to the composite material (2) under the impact of the pendulum assembly, the horizontal transfer assembly being limitedly slid on the installation table (11), and further comprising a detection device with a detection end facing the composite material (2); The detection device comprises a capture camera (5) installed on the installation table (11) directly below the composite material (2); The horizontal transfer assembly comprises a striking plate (3) slidably installed on the installation table (11), and the contact end of the composite material (2) is close to the swinging end of the pendulum assembly; the contact end of the composite material (2) is in full contact with the striking plate (3); The horizontal impact force on the composite material (2) can be obtained by calculating the mass and speed of the striking plate (3), and the striking plate (3) can fully strike one end face of the composite material (2) when striking, so that the stress is more uniform; The pendulum assembly comprises a pendulum, a connecting wire one (7), a lifting plate (6) and a driving device (13), the fixed end of the connecting wire one (7) and the driving device (13) are both installed on a support frame (12), the lifting plate (6) is lifted relative to the composite material (2) and is installed on the driving end of the driving device (13), and the connecting wire one (7) is fixedly connected with the pendulum through the lifting plate (6).

2. The composite high velocity dynamic impact test apparatus of claim 1, wherein: The composite material (2) is installed on the installation table (11) through the mounting plate (1).

3. The composite high velocity dynamic impact test apparatus of claim 1, wherein: Further comprising a pulley (14) installed on the lifting plate (6), the connecting wire one (7) passes through the pulley (14), and the pulley (14) is installed between the fixed end of the connecting wire one (7) and the contact end of the connecting wire one (7) with the lifting plate (6).

4. The composite high velocity dynamic impact test apparatus of claim 3, wherein: The fixed end of the connecting wire one (7) is higher than the highest point of the lifting plate (6).

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