Electron irradiation in-situ tensile and compression experimental method and device

Abstract

The invention discloses an electron irradiation in-situ tensile and compression test method and device, which belongs to the technical field of mechanical experimental equipment, and comprises a box assembly and a test piece, wherein an electron irradiation system is arranged on the top of the box assembly, a clamping system for clamping and loading the test piece is arranged in the box assembly, and a driving system for adjusting the position and angle of the clamping system is arranged below the clamping system, and by selecting a suitable number and position of clamping heads according to the shape of the test piece, by inserting a bearing arm into an adjustment table, and then clamping and fixing the test piece with a clamping head corresponding to the bearing arm, it is possible to achieve precise clamping of test pieces of different shapes, and the driving system can achieve all-round and multi-angle position adjustment of the test piece, thereby greatly improving the versatility of the experimental device and being suitable for the research of various materials.

Description

Technical Field

[0001] The invention relates to the technical field of mechanical experimental equipment, and in particular to an electron irradiation in-situ tensile and compression experimental method and device. Background Art

[0002] Aerospace materials need to serve in space for a long time and withstand the complex space environment. Electron irradiation is a common form of irradiation, and in ground experiments, the equivalent injection method is often used for electron irradiation experiments. Therefore, electron irradiation experiments are widely used in the field of aerospace material testing. After the material is subjected to electron irradiation, various properties may change, and the change in mechanical properties is a focus of people's attention. In order to study the changes in the mechanical properties of materials, a common method is to conduct tensile and compression experiments on material samples before and after irradiation and compare them. During the electron irradiation experiment, due to the presence of radiation, the operator must stay away from the electron irradiation device, and there must be effective physical isolation between people and equipment. On the other hand, due to the strong interference to electronic equipment during the electron irradiation process, the data transmission of electronic equipment such as actuators and sensors will be interfered with, and even affect their normal operation. In order to obtain data on the change of mechanical properties before and after electron irradiation, the existing technical solution is: prepare a batch of experimental samples under the same conditions, use a universal material testing machine to perform tensile and compression tests on a certain number of experimental samples that have not been irradiated with electrons to obtain a set of experimental data; then send a certain number of experimental samples to the electron irradiation device for a certain dose of electron irradiation, and use the universal material testing machine to perform tensile and compression tests after the dose irradiation experiment to obtain experimental data after irradiation. The two sets of experimental data are then compared to verify whether electron irradiation has an effect on the change of mechanical properties of the experimental samples.

[0003] For example, a Chinese invention patent with a publication number of CN114279833A discloses an electron irradiation in-situ tensile and compressive experimental device and method, including: an electron accelerator for generating the required irradiated electrons and an electron irradiation device connected thereto; a three-dimensional positioning platform arranged under the electron irradiation device and a material clamping assembly mechanically connected thereto; an electromagnetic drive motor mechanically connected to the three-dimensional positioning platform to generate tensile and compressive forces; a force sensor arranged between the three-dimensional positioning platform and the electromagnetic drive motor to transmit the tensile and compressive forces generated by the electromagnetic drive motor and monitor the transmission of the tensile force; a displacement monitor arranged outside the electron irradiation device to monitor the displacement of the material; and a multi-channel controller arranged outside the electron irradiation device to control the electromagnetic drive motor and the three-dimensional positioning platform through wires.

[0004] The above solution has the following shortcomings in actual use:

[0005] This scheme integrates electron irradiation experiments and tensile compression experiments, and increases mechanical loads while the experimental materials are receiving electron irradiation. It can observe in situ the effects of electron irradiation on the mechanical properties of materials during the electron irradiation process. However, in actual use, due to the diversity of specimen shapes, the above structure needs to replace different clamps to clamp and fix the specimens when installing specimens of different shapes, and there will also be uneven force on the specimens when conducting experiments on specimens of different shapes. Summary of the invention

[0006] The purpose of the present invention is to provide an electron irradiation in-situ tensile and compression experimental device to solve the problems raised in the above background technology.

[0007] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: an electron irradiation in-situ tensile and compression experimental device, comprising a box assembly and a specimen, wherein an electron irradiation system is arranged on the top of the box assembly, a clamping system for clamping and loading the specimen is arranged in the box assembly, and a driving system for adjusting the position and angle of the clamping system is arranged below the clamping system; the clamping system comprises a clamping box, a plurality of adjustment tables are slidably connected to the clamping box through a plurality of through sliding grooves, a driving member for driving the adjustment table to move is arranged in the clamping box, the adjustment table is movably connected with a carrying arm, a clamping head is arranged at the end of the carrying arm, and the clamping of specimens of different shapes can be achieved by adjusting the directions of the carrying arm and the clamping head.

[0008] Preferably, the box assembly includes a box, a mounting platform is installed in the middle of the inner wall of the box, a vacuum control system and a temperature control system are arranged at the bottom of the inner wall of the box, a control panel is arranged on the front side of the box, and a box door is rotatably connected to the box via a hinge.

[0009] Preferably, a protective cover is provided between the upper surface of the mounting platform and the lower surface of the clamping system, and the protective cover is made of polytetrafluoroethylene material.

[0010] Preferably, the driving system includes a linear motor 1, a linear motor 2 is arranged on the mover seat of the linear motor 1, a supporting platform is arranged on the mover seat of the linear motor 2, the linear motor 1 is used to drive the linear motor 2 to move in a first direction, and the linear motor 2 is used to drive the supporting platform to move in a second direction, a bottom plate is arranged on the top of the supporting platform, the upper surface of the bottom plate is connected to a connecting seat through two telescopic parts, a ball head is sleeved on the connecting seat, and the ball head is connected to the top plate through a connecting column.

[0011] Preferably, a plurality of cylinders are arranged on the upper surface of the bottom plate, a mounting seat is arranged at the output end of the cylinder, a sphere is sleeved in the mounting seat, and the top of the sphere is connected to the top plate.

[0012] Preferably, the driving member includes a driving disk and an actuator that drives the driving disk to rotate, the driving disk is rotatably connected to the inner wall of the clamping box, a plurality of movable seats are arranged above the driving disk, the tops of the movable seats are respectively connected to the adjustment table, a vortex rack is arranged on the upper surface of the driving disk, and a tooth groove corresponding to the vortex rack is opened at the bottom of the movable seat.

[0013] Preferably, the clamping head includes a U-shaped seat, in which a clamp is slidably connected via two guide columns, a spring is arranged between the upper surface of the clamp and the inner wall of the U-shaped seat, an adjusting screw for driving the clamp to move is threadedly connected to the U-shaped seat, two protrusions are arranged on the bottom of the U-shaped seat and one side of the clamp, and the U-shaped seat and the clamp on the side where they abut against the specimen are provided with sheet memory alloy.

[0014] Preferably, a slot corresponding to the supporting arm is provided on one side of the bottom inner wall of the adjustment platform, guide grooves are provided on both sides of the inner wall of the adjustment platform, one end of the guide groove extends into the slot, two sliders corresponding to the guide grooves are provided at the bottom end of the supporting arm, a locking bolt is threadedly connected on the supporting arm, and a groove corresponding to the locking bolt is provided on one side of the slot wall.

[0015] An experimental method based on an electron irradiation in-situ tensile and compression experimental device, the specific steps include:

[0016] Set the electron irradiation dose, intensity, mechanical stretching speed and intensity of the experiment;

[0017] The specimen is fixed by a clamping system, and the position and angle of the specimen are adjusted by the driving system;

[0018] Start electron irradiation and mechanical stretching while performing status monitoring and data acquisition;

[0019] Change the electron irradiation dose and mechanical stretching speed intensity according to the experimental requirements;

[0020] After achieving the experimental purpose, data collection is completed and the experiment ends.

[0021] Compared with the prior art, the present invention has the following beneficial effects:

[0022] By selecting the appropriate number and position of clamping heads according to the shape of the specimen, inserting the load-bearing arm into the adjustment platform, and then clamping and fixing the specimen with the clamping head corresponding to the load-bearing arm, it is possible to achieve accurate clamping of specimens of different shapes, and the position adjustment of the specimen in all directions and at multiple angles can be achieved through the driving system, which greatly improves the versatility of the experimental device and is suitable for the research of various materials.

[0023] By integrating the electron irradiation system, drive system and clamping system into the box assembly, electron irradiation, mechanical stretching and compression, and precise environmental control can be achieved simultaneously on the same experimental platform, providing a powerful means for in-depth research on the performance evolution of materials under complex working conditions. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0025] Figure 2 It is a cross-sectional view of the overall structure of the present invention;

[0026] Figure 3 It is a schematic diagram of the structure inside the box assembly of the present invention;

[0027] Figure 4 It is a structural schematic diagram of the driving system of the present invention;

[0028] Figure 5 It is a partial structural breakdown diagram of the drive system of the present invention;

[0029] Figure 6 It is a structural schematic diagram of the clamping system of the present invention;

[0030] Figure 7 It is a schematic diagram of the structure inside the clamping box of the present invention;

[0031] Figure 8 It is a schematic diagram of the clamping head of the present invention in use;

[0032] Fig. 9 This is a schematic diagram of the clamping head of the present invention in an unused state.

[0033] In the figure:

[0034] 100, box assembly; 200, electron irradiation system; 300, drive system; 400, clamping system; 500, protective cover; 600, test piece; 101, box; 102, mounting table; 103, vacuum control system; 104, temperature control system; 105, control panel; 106, box door; 301, linear motor 1; 302, linear motor 2; 303, bearing table; 304, bottom plate; 305, telescopic part; 306, connecting seat; 307, ball head; 308, connecting column; 309, top Plate; 310, cylinder; 311, mounting seat; 312, sphere; 401, clamping box; 402, through-slide groove; 403, moving seat; 404, driving plate; 405, vortex rack; 406, actuator; 407, adjustment table; 408, guide groove; 409, bearing arm; 410, slot; 411, locking bolt; 412, groove; 413, U-shaped seat; 414, splint; 415, guide column; 416, spring; 417, protrusion; 418, sheet memory alloy; 419, adjusting screw. DETAILED DESCRIPTION

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

[0036] See also Figure 1-Figure 9 , the present invention provides a technical solution:

[0037] like Figure 1 and Figure 3As shown, an electron irradiation in-situ tensile and compression experimental device includes a box assembly 100 and a specimen 600. The top of the box assembly 100 carries an electron irradiation system 200 to provide an irradiation source for the specimen. The electron irradiation system 200 is used for electron generation, acceleration and transmission, and outputs a stable electron beam with controllable energy and dose. Its specific components are optimized according to the energy range, beam intensity and other parameters of the electron irradiation required for the experiment to ensure that the electron beam is accurately focused and evenly irradiated to the specimen 600 to simulate the irradiation scene in actual application. The box assembly 100 is provided with a A clamping system 400 is used to clamp and load the specimen 600. A driving system 300 for adjusting the position and angle of the clamping system 400 is arranged below the clamping system 400. The clamping system 400 is a key part for achieving precise fixation and multi-directional adjustment of the specimen. By integrating the electron irradiation system 200, the driving system 300 and the clamping system 400 into the box assembly 100, electron irradiation, mechanical stretching and compression, and precise environmental control can be simultaneously achieved on the same experimental platform, providing a powerful means for in-depth research on the performance evolution of materials under complex working conditions.

[0038] Specifically, in one embodiment, according to the expected service environment of the material, the electron irradiation energy is set to 5MeV, the dose rate is 10Gy / s, the initial mechanical stretching speed is 0.5mm / min, and the initial tensile strength is 100MPa. The operator puts the processed test piece 600 into the clamping system 400, fixes and adjusts the test piece 600 to a suitable position and angle through the clamping system 400 and the drive system 300, and starts the experiment. During the experiment, data is collected every 10s, including strain data and irradiation dose data of the test piece 600. When the irradiation dose reaches 500Gy, the mechanical stretching speed is increased to 1mm / min, and the performance changes of the test piece are continuously observed. When the test piece has cracks visible to the naked eye or reaches a preset tensile strain limit (such as 10%), the experiment is terminated, and the large amount of collected data is deeply analyzed to study the microstructure changes and mechanical property attenuation laws of the test piece 600 under complex working conditions, so as to provide a solid theoretical basis for its practical application.

[0039] like Figure 1 and Figure 2As shown, the box assembly 100 includes a box 101, which is made of a durable material with certain shielding properties to ensure the safety of the experimental process and prevent electron radiation leakage from causing harm to operators. A mounting platform 102 is installed in the middle of the inner wall of the box 101, and the drive system 300 is installed on the upper surface of the mounting platform 102. The mounting platform 102 serves as the installation base of the drive system 300 to ensure the stable operation of the drive system 300 and accurately control the position and posture of the clamping system 400. A vacuum control system is provided at the bottom of the inner wall of the box 101. 103 and the temperature control system 104 can create a vacuum environment and temperature conditions that meet the experimental requirements. The vacuum environment can reduce the collision between electrons and gas molecules and ensure the accuracy of the irradiation dose. Accurate temperature control is conducive to studying the influence of temperature on the irradiation-mechanical property coupling effect of the material. A control panel 105 is arranged on the front side of the box 101 to facilitate the operator to input experimental parameters and start or stop the experimental process. A door 106 is rotatably connected to the box 101 through a hinge, wherein a sealed space is formed in the box 101 when the door 106 is closed.

[0040] Furthermore, a protective cover 500 is provided between the upper surface of the mounting platform 102 and the lower surface of the clamping system 400. The protective cover 500 is made of polytetrafluoroethylene material. Polytetrafluoroethylene has good chemical stability, radiation resistance and certain flexibility. On the one hand, it can protect the driving system 300 below from radiation damage and extend its service life. On the other hand, its flexibility can avoid interference during the movement of the clamping system 400, thereby ensuring the smooth operation of the experimental device.

[0041] like Figure 4 and Figure 5 As shown, the drive system 300 includes a linear motor 301, a linear motor 302 is arranged on the mover seat of the linear motor 301, a support platform 303 is arranged on the mover seat of the linear motor 302, the linear motor 301 is used to drive the linear motor 302 to move along the first direction, and the linear motor 302 is used to drive the support platform 303 to move along the second direction. This two-dimensional linear drive method can accurately locate the planar position of the clamping system 400, a bottom plate 304 is arranged on the top of the support platform 303, and the upper surface of the bottom plate 304 is connected to a connecting seat 306 through two telescopic parts 305, a ball head 307 is sleeved on the connecting seat 306, and the ball head 307 is connected to the top plate 309 through a connecting column 308.

[0042] Furthermore, a plurality of cylinders 310 are provided on the upper surface of the base plate 304, a mounting seat 311 is provided at the output end of the cylinder 310, a sphere 312 is sleeved in the mounting seat 311, and the top of the sphere 312 is connected to the top plate 309. Specifically, the top plate 309 is combined with the cylinder 310, the mounting seat 311 and the sphere 312 on the base plate 304 to achieve multi-angle and all-round adjustment of the clamping system 400, which can not only adjust the plane position, but also accurately control the inclination angle of the clamping system to meet the diverse requirements for the irradiation angle of the specimen under different experimental needs.

[0043] like Figure 6 As shown, the clamping system 400 includes a clamping box 401, and a plurality of adjustment platforms 407 are slidably connected to the clamping box 401 through a plurality of through slide grooves 402. A driving member for driving the adjustment platform 407 to move is arranged in the clamping box 401. The adjustment platform 407 is movably connected with a carrying arm 409, and a clamping head is arranged at the end of the carrying arm 409. By adjusting the direction of the carrying arm 409 and the clamping head, it is possible to clamp the specimens 600 of different shapes.

[0044] like Figure 7 As shown, the driving member includes a driving disk 404 and an actuator 406 for driving the driving disk 404 to rotate. The driving disk 404 is rotatably connected to the inner wall of the clamping box 401. A plurality of moving seats 403 are arranged above the driving disk 404. The tops of the moving seats 403 are respectively connected to the adjusting platform 407. A vortex rack 405 is arranged on the upper surface of the driving disk 404. A tooth groove corresponding to the vortex rack 405 is arranged at the bottom of the moving seat 403. Specifically, when the actuator 406 drives the driving disk 404 to rotate, the moving seat 403 drives the adjusting platform 407 to achieve precise linear movement, so as to flexibly adjust the clamping position according to the size and shape of the specimen 600. After the electron irradiation of the specimen 600 is completed, the tensile and compression tests of the specimen 600 can be achieved by controlling the movement of the clamping head.

[0045] like Figure 8 and Fig. 9 As shown, the clamping head includes a U-shaped seat 413, in which a clamping plate 414 is slidably connected via two guide columns 415. A spring 416 is arranged between the upper surface of the clamping plate 414 and the inner wall of the U-shaped seat 413. The spring 416 provides an initial clamping force. An adjusting screw 419 for driving the clamping plate 414 to move is threadedly connected to the U-shaped seat 413. The adjusting screw 419 can fine-tune the clamping degree as required. Two protrusions 417 are arranged on the bottom of the U-shaped seat 413 and one side of the clamping plate 414. The U-shaped seat 413 and the clamping plate 414 are arranged on the abutting sides of the specimen 600 with sheet memory alloy 418, which can adapt to the tiny irregularities on the surface of the specimen 600 to ensure a tight and uniform clamping effect and avoid damage to the specimen.

[0046] Further, a slot 410 corresponding to the carrying arm 409 is provided on one side of the bottom of the inner wall of the adjustment platform 407, and guide grooves 408 are provided on both sides of the inner wall of the adjustment platform 407. One end of the guide groove 408 extends into the slot 410. Two sliders corresponding to the guide grooves 408 are provided at the bottom end of the carrying arm 409. A locking bolt 411 is threadedly connected to the carrying arm 409, and a groove 412 corresponding to the locking bolt 411 is provided on one side of the slot 410 wall. Specifically, when selecting the appropriate direction of the clamping head When clamping and fixing the specimen 600, the load-bearing arm 409 corresponding to the above-mentioned clamping head is flipped over and the bottom end of the load-bearing arm 409 is inserted into the slot 410 under the guidance of the guide groove 408 and the slider. At this time, the rotating end of the locking bolt 411 moves to the outside of the adjustment platform 407. By rotating the locking bolt 411, the rotating end of the locking bolt 411 is driven to move under the action of the threaded end of the locking bolt 411 until it is tightly fitted with the surface of the adjustment platform 407, thereby completing the fixing of the load-bearing arm 409.

[0047] An experimental method based on an electron irradiation in-situ tensile and compression experimental device, the specific steps include:

[0048] Set the electron irradiation dose, intensity, mechanical stretching speed and intensity of the experiment;

[0049] The specimen is fixed by a clamping system, and the position and angle of the specimen are adjusted by the driving system;

[0050] Start electron irradiation and mechanical stretching while performing status monitoring and data acquisition;

[0051] Change the electron irradiation dose and mechanical stretching speed intensity according to the experimental requirements;

[0052] After achieving the experimental purpose, data collection is completed and the experiment ends.

[0053] The working process of this embodiment is as follows: according to the experimental purpose and the characteristics of the research material, the key parameters such as the electron irradiation dose, intensity, mechanical stretching speed, and intensity of the experiment are set through the control panel 105. These parameters will serve as the control benchmark for the subsequent experimental process to ensure the accuracy of the experimental conditions. The test piece 600 is fixed by the clamping system 400, and the position and angle of the test piece 600 are adjusted under the action of the driving system 300. The box door 106 is opened, and the test piece 600 is placed near the clamping system 400. The unique structure of the clamping system 400 is used to firstly pass through The angle and position of the carrying arm 409 are adjusted to adapt to the shape of the specimen 600. Subsequently, the clamping head is ensured to tightly and firmly fix the specimen 600 by rotating the adjusting screw 419 and utilizing the adaptive effect of the spring 416. During the clamping process, the sheet memory alloy 418 effectively fits the surface of the specimen to prevent local stress concentration. After the specimen 600 is fixed, the specimen 600 is accurately moved to the predetermined initial position and adjusted to the desired inclination through the coordinated drive of the linear motor 1 301 and the linear motor 2 302, as well as the fine adjustment of the angle by the cylinder 310 and other components. angle, to make full preparations for subsequent experiments, start the electron irradiation system 200 and the clamping system 400 to start synchronous electron irradiation and mechanical stretching. During the experiment, various sensors integrated in the box assembly 100 (such as irradiation dose sensors, strain sensors, etc., not shown in detail in the figure) are used to monitor the state and collect data in real time. These data include the deformation of the specimen, the real-time accumulation of irradiation dose, the internal stress and strain distribution of the material, etc., which will be transmitted to the control system in real time through the data transmission line for storage and analysis. During the experiment, the electron irradiation dose and mechanical stretching speed, strength and other parameters can be flexibly changed through the control software. For example, when studying the degradation law of the mechanical properties of the material under different irradiation doses, the irradiation dose can be gradually increased, and the tensile or compression response of the specimen can be observed at the same time. When the experimental purpose is achieved, such as completing the predetermined irradiation time, the specimen 600 reaches the preset deformation degree or damage threshold, the electron irradiation and mechanical stretching are stopped, and the final data collection and sorting work is completed. The operator opens the box door 106, takes out the specimen 600, closes the experimental device, and uses the collected rich data to conduct in-depth material performance analysis and research.

[0054] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. An electron irradiation in-situ tensile and compression test device, comprising a box assembly and a test piece, characterized in that: An electron irradiation system is arranged on the top of the box assembly, a clamping system for clamping and loading the specimen is arranged inside the box assembly, and a driving system for adjusting the position and angle of the clamping system is arranged below the clamping system; The driving system comprises a linear motor 1, a linear motor 2 is arranged on a mover seat of the linear motor 1, a bearing platform is arranged on a mover seat of the linear motor 2, the linear motor 1 is used to drive the linear motor 2 to move in a first direction, the linear motor 2 is used to drive the bearing platform to move in a second direction, a bottom plate is arranged on the top of the bearing platform, the upper surface of the bottom plate is connected to a connecting seat through two telescopic parts, a ball head is sleeved on the connecting seat, and the ball head is connected to the top plate through a connecting column; A plurality of cylinders are arranged on the upper surface of the bottom plate, and a mounting seat is arranged at the output end of the cylinder, a sphere is sleeved in the mounting seat, and the top of the sphere is connected to the top plate; The clamping system comprises a clamping box, on which a plurality of adjustment platforms are slidably connected via a plurality of through-slots, a driving member for driving the adjustment platforms to move is arranged in the clamping box, and the adjustment platforms are movably connected with a carrying arm, and a clamping head is arranged at the end of each of the carrying arms, and specimens of different shapes can be clamped by adjusting the directions of the carrying arm and the clamping head; The clamping head includes a U-shaped seat, in which a clamping plate is slidably connected via two guide columns, a spring is arranged between the upper surface of the clamping plate and the inner wall of the U-shaped seat, an adjusting screw for driving the clamping plate to move is threadedly connected to the U-shaped seat, two protrusions are arranged on the bottom of the U-shaped seat and one side of the clamping plate, and the U-shaped seat and the clamping plate are arranged on the abutting sides of the specimen with sheet memory alloy.

2. The electron irradiation in-situ tensile and compression experimental device according to claim 1, characterized in that: The box assembly includes a box, a mounting platform is installed in the middle of the inner wall of the box, a vacuum control system and a temperature control system are arranged at the bottom of the inner wall of the box, a control panel is arranged on the front side of the box, and a box door is rotatably connected to the box through a hinge.

3. The electron irradiation in-situ tensile and compression experimental device according to claim 2, characterized in that: A protective cover is arranged between the upper surface of the mounting platform and the lower surface of the clamping system, and the protective cover is made of polytetrafluoroethylene material.

4. The electron irradiation in-situ tension and compression experimental device according to claim 1, characterized in that: The driving member includes a driving disk and an actuator that drives the driving disk to rotate. The driving disk is rotatably connected to the inner wall of the clamping box. A plurality of movable seats are arranged above the driving disk. The tops of the movable seats are respectively connected to the adjustment platform. A vortex rack is arranged on the upper surface of the driving disk. A tooth groove corresponding to the vortex rack is opened at the bottom of the movable seat.

5. The electron irradiation in-situ tension and compression experimental device according to claim 1, characterized in that: A slot corresponding to the bearing arm is provided on one side of the bottom of the inner wall of the adjustment platform, and guide grooves are provided on both sides of the inner wall of the adjustment platform. One end of the guide groove extends into the slot, and two sliders corresponding to the guide grooves are provided at the bottom end of the bearing arm. A locking bolt is threadedly connected to the bearing arm, and a groove corresponding to the locking bolt is provided on one side of the slot wall.

6. An experimental method based on the electron irradiation in-situ tensile and compression experimental device according to any one of claims 1 to 5, characterized in that: The specific steps include: Set the electron irradiation dose, intensity and mechanical stretching speed and intensity of the experiment; The specimen is fixed by a clamping system, and the position and angle of the specimen are adjusted by the driving system; Start electron irradiation and mechanical stretching while performing status monitoring and data acquisition; Change the electron irradiation dose and mechanical stretching speed intensity according to the experimental requirements; After achieving the experimental purpose, data collection is completed and the experiment ends.

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