Ice crystal-water mixed phase particle erosion test device and method

Abstract

This invention discloses an ice crystal-water mixed-phase particle erosion test apparatus and method, wherein: an ice crusher, an air compressor, and a particle size analyzer are used to generate, drive, and screen ice crystal particles, respectively; a temperature control tube is used to obtain ice crystal-water mixed-phase particles with different melting degrees; a long-focal-length microscope equipped with a high-speed camera is used to observe the ice crystal melting process online; an adjustable nozzle is fixed on the erosion environment chamber to control the erosion range and erosion angle; a tensile-torsional fatigue testing machine is used to fix the test specimen and apply different loads according to the test requirements; a controller and a chiller are used to control and cool the tensile-torsional fatigue testing machine, respectively; a particle image velocimeter is used to monitor the velocity of the mixed-phase particles in real time; a pressure measuring instrument and a long-focal-length microscope equipped with a high-speed camera are used to monitor the impact pressure and damage of the test specimen, respectively. Based on this invention, the material and structural damage mechanism caused by ice crystal-water mixed-phase particle erosion during high-altitude cruising can be explored.

Description

Technical Field

[0001] This invention relates to the field of erosion testing technology, and in particular to an ice crystal-water mixed-phase particle erosion testing device and method. Background Technology

[0002] Frequent ice crystal icing incidents at high altitudes during cruising pose a serious threat to flight safety. Unlike external icing of aircraft engines caused by supercooled water droplets, ice crystal icing caused by tiny ice crystal particles at high altitudes can occur directly on the surface of the compressor blades of the intermediate compressor and even the high-pressure compressor of aircraft engines. This can lead to accidents such as thrust loss, surge, excessive vibration, in-flight engine shutdown, and structural damage, seriously affecting flight safety.

[0003] When tiny ice crystals from high altitudes are ingested into an aero-engine, they melt in the warm environment inside the engine. The resulting ice-water mixed-phase particles have a significant erosive effect on the compressor blade surface. Currently, erosion tests are mostly conducted using sand and gravel particles (CN201721755896.X, CN201910794808.4, CN201810261430.7), and some studies have also used ice and water for erosion tests (CN201810769964.0, CN202110517224.X). However, these tests are difficult to directly apply to the study of ice-water mixed-phase particle erosion and cannot reveal the erosion damage mechanism caused by ice-water mixed-phase particles with different melting degrees. Summary of the Invention

[0004] The purpose of this invention is to provide an ice crystal-water mixed-phase particle erosion test device and method to solve the problems existing in the prior art, realize the simulation of the erosion of test specimens under different stress states by ice crystal-water mixed-phase particles with different melting degrees, and provide a basis for exploring the material and structural damage mechanism caused by ice crystal-water mixed-phase particle erosion during high-altitude cruise ice crystal icing.

[0005] To achieve the above objectives, the present invention provides the following solution: The present invention provides an ice crystal-water mixed phase particle erosion test device, including an ice crusher, an air compressor, a particle size analyzer, a temperature control tube, a long-focal microscope equipped with a high-speed camera, an adjustable nozzle, an erosion environment chamber, valves, a chiller, a controller, test pieces, a tensile-torsional composite fatigue testing machine, a particle image velocimeter, a pressure measuring instrument, and a second long-focal microscope equipped with a high-speed camera. The system comprises: an ice crusher for producing ice crystal particles; an air compressor for providing the driving airflow for the ice crystal particles; a particle size analyzer for screening ice crystal particles with an equivalent diameter of less than 200 micrometers; a temperature control tube for obtaining ice crystal-water mixed-phase particles with different melting degrees; a long-focal-length microscope equipped with a high-speed camera for real-time online observation of the ice crystal melting process; an adjustable nozzle fixed to the erosion environment chamber for controlling the erosion range and angle; a valve for determining whether mixed-phase particles can enter the erosion environment chamber; an erosion environment chamber mounted on a tensile-torsional fatigue testing machine for fixing the test specimen and applying different loads as needed; a controller and a chiller for controlling and cooling the tensile-torsional fatigue testing machine; a particle image velocimeter for real-time monitoring of the velocity of ice crystal-water mixed-phase particles; and a pressure measuring instrument and a long-focal-length microscope equipped with a high-speed camera for real-time monitoring of the impact pressure borne by the test specimen and the damage status of the test specimen.

[0006] The temperature control tube includes a temperature controller, a C-shaped heating tube, and a high-temperature resistant glass tube. The C-shaped heating tube covers the high-temperature resistant glass tube, and the uncovered part can serve as the observation window of the long-focal-length microscope equipped with a high-speed camera. The temperature controller can control the heating of the C-shaped heating tube, which can create different warm environments inside the high-temperature resistant glass tube, thereby controlling the degree of melting of ice crystal particles inside the high-temperature resistant glass tube.

[0007] The adjustable nozzle includes an adjusting bracket one, an adjusting bracket two, and a nozzle pipe. The nozzle pipe is threadedly fixed to the adjusting bracket one. The adjusting bracket one and the adjusting bracket two are connected by a vertical threaded rod. The adjusting bracket one can rotate around the vertical threaded rod. After screwing nuts into both ends of the threaded rod, the adjusting bracket one can be fixed. The adjusting bracket two is connected to the mounting plate of the erosion environment chamber by a horizontal threaded rod. The horizontal threaded rod can be screwed into the interior of the adjusting bracket two. The adjusting bracket two can rotate around the horizontal threaded rod. After screwing nuts into the outer end of the threaded rod, the adjusting bracket two can be fixed. Since the adjusting bracket one and the adjusting bracket two can rotate around the vertical threaded rod and the horizontal threaded rod respectively, the erosion angle can be controlled. The nozzle pipe includes three parts: a nozzle head, a metal washer, and a connecting pipe. The nozzle head is threadedly connected to the connecting pipe. The metal washer is placed between the nozzle head and the connecting pipe. By replacing the metal washer with different inner diameters, the erosion range can be controlled.

[0008] The erosion environment chamber includes a cylindrical box, an observation window, and a column clamp. The observation window can be used as the observation window of the long-focal-length microscope equipped with a high-speed camera. The column clamp is used to fix the erosion environment chamber to the column of the tensile-torsion composite fatigue testing machine.

[0009] This invention also provides a method for testing the erosion of ice crystal-water mixed-phase particles, comprising the following steps:

[0010] 1) Select a metal washer with a suitable inner diameter according to the test requirements, connect the nozzle, metal washer and connecting pipe to form a nozzle, and then connect the nozzle to the adjustment bracket one and adjustment bracket two in sequence and install it on the mounting plate of the erosion environment chamber.

[0011] 2) Connect the column clamp on the erosion environment chamber to the column of the tension-torsion combined fatigue testing machine: The column clamp is a split structure. One part is fixed to the support arm on the side wall of the erosion environment chamber, and the other part is fastened to it to clamp the column of the tension-torsion combined fatigue testing machine. Then, the two parts are connected with bolts to complete the fixation.

[0012] 3) Start the chiller to provide cooling for the tensile-torsional fatigue testing machine;

[0013] 4) Start the controller, fix the test piece on the clamp of the tensile-torsional fatigue testing machine, and determine the type and magnitude of the applied load according to the test requirements;

[0014] 5) Open the valve and start the ice crusher to produce ice crystal particles;

[0015] 6) Turn on the air compressor and particle size analyzer. The particle size analyzer filters ice crystal particles with an equivalent diameter of less than 200 micrometers. The filtered ice crystal particles enter the high-temperature resistant glass tube of the temperature control tube under the action of airflow.

[0016] 7) Determine the melting degree of the ice crystal-water mixed phase particles according to the experimental requirements, adjust the heating temperature of the C-type heating tube accordingly, obtain the ice crystal-water mixed phase particles with the set melting degree, and observe the melting degree of ice crystals in real time through a telephoto microscope equipped with a high-speed camera.

[0017] 8) According to the test requirements, the erosion angle of the nozzle can be changed by adjusting the first and second adjustment brackets;

[0018] 9) Turn on the particle image velocimeter and adjust the air compressor flow rate according to the test requirements to obtain the velocity of the ice crystal-water mixed phase particles required for the test, and carry out the ice crystal-water mixed phase particle erosion test;

[0019] 10) Start the pressure measuring instrument and the long-focal-length microscope equipped with a high-speed camera to monitor the impact pressure and damage of the test piece in real time.

[0020] 11) After the test, shut off the valves, tension-torsion combined fatigue testing machine, ice crusher, particle size analyzer, C-type heating tube, air compressor, long-focus microscope I equipped with high-speed camera, particle image velocimeter, pressure measuring instrument and long-focus microscope II equipped with high-speed camera in sequence, remove the erosion environment chamber and test piece, and turn off the controller and chiller.

[0021] The present invention achieves the following technical effects compared to the prior art:

[0022] 1. The C-shaped heating tube in this invention can create different warm environments inside the high-temperature resistant glass tube, thereby controlling the degree of melting of ice crystal particles inside the high-temperature resistant glass tube; and the high-temperature resistant glass tube forms a strip-shaped observation window at the opening of the C-shaped heating tube, which is convenient for monitoring the melting of ice crystals.

[0023] 2. This invention can simulate the erosion of test specimens under different stress states by ice crystal-water mixed phase particles, providing a basis for exploring the material and structural damage mechanism caused by the erosion of ice crystal-water mixed phase particles during high-altitude cruise ice crystal icing. Attached Figure Description

[0024] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0025] Figure 1 This is a schematic diagram of the experimental apparatus in this invention;

[0026] Figure 2 This is a schematic diagram of a temperature control tube;

[0027] Figure 3 This is a cross-sectional view of the nozzle;

[0028] Figure 4 A schematic diagram of the adjustable bracket;

[0029] Figure 5 Schematic diagram of adjustment bracket 2;

[0030] Figure 6 This is a schematic diagram of an adjustable nozzle;

[0031] Figure 7 This is a schematic diagram of an erosion environment chamber;

[0032] Figure 8 This is a schematic diagram of a column clamp;

[0033] The components include: 1. Ice crusher; 2. Air compressor; 3. Particle size analyzer; 4. Temperature control tube; 5. Long-focus microscope with high-speed camera (I); 6. Adjustable nozzle; 7. Erosion environment chamber; 8. Valve; 9. Chiller; 10. Controller; 11. Test piece; 12. Tensile-torsional fatigue testing machine; 13. Particle image velocimeter; 14. Pressure measuring instrument; 15. Long-focus microscope with high-speed camera (II); 16. High-temperature resistant glass tube; 17. C-type heating tube; 18. Adjustment bracket (II); 19. Adjustment bracket (I); 20. Nozzle; 21. Connecting pipe; 22. Metal gasket; 23. Column clamp; 24. Observation window (I); 25. Observation window (II). Detailed Implementation

[0034] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without creative effort are within the scope of protection of the present invention.

[0035] The purpose of this invention is to provide an ice crystal-water mixed-phase particle erosion test device and method to solve the problems existing in the prior art, realize the simulation of the erosion of test specimens under different stress states by ice crystal-water mixed-phase particles with different melting degrees, and provide a basis for exploring the material and structural damage mechanism caused by ice crystal-water mixed-phase particle erosion during high-altitude cruise ice crystal icing.

[0036] To make the above-mentioned objects, features and advantages of the present invention more apparent and understandable, the present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0037] Example 1:

[0038] like Figure 1 As shown, this embodiment provides an ice crystal-water mixed-phase particle erosion test device, including an ice crusher 1, an air compressor 2, a particle size analyzer 3, a temperature control tube 4, a long-focal-length microscope with a high-speed camera 5, an adjustable nozzle 6, an erosion environment chamber 7, a valve 8, a chiller 9, a controller 10, a test piece 11, a tensile-torsional fatigue testing machine 12, a particle image velocimeter 13, a pressure measuring instrument 14, and a second long-focal-length microscope with a high-speed camera 15. The ice crusher 1 is used to generate ice crystal particles. The ice crystal particles enter the particle size analyzer 3 under the driving airflow provided by the air compressor 2. The particle size analyzer 3 filters out ice crystal particles with an equivalent diameter of less than 200 micrometers. These particles further enter the temperature control tube 4 to form ice crystal-water mixed-phase particles with different melting degrees. The long-focal-length microscope with a high-speed camera 5 is used to observe the ice crystal melting in real time. The adjustable nozzle 6 controls the flow rate and erosion angle of the mixed-phase particles. It is fixed to the erosion environment chamber 7, which is fixed to the tensile-torsional fatigue testing machine 12. The opening and closing of the valve 8 determines whether the mixed-phase particles can enter the erosion environment chamber 7. The test piece 11 is fixed to the tensile-torsional fatigue testing machine 12. The chiller 9 provides cooling for the tensile-torsional fatigue testing machine 12. The controller 10 controls the tensile-torsional fatigue testing machine 12. The particle image velocimeter 13 monitors the velocity of the ice crystal-water mixed-phase particles in real time. The pressure measuring instrument 14 monitors the impact pressure borne by the test piece 11 in real time. The long-focal-length microscope 15 equipped with a high-speed camera observes the damage of the test piece 11 in real time.

[0039] like Figure 2 As shown, the temperature control tube 4 includes a high-temperature resistant glass tube 16 and a C-shaped heating tube 17. The C-shaped heating tube 17 covers the high-temperature resistant glass tube 16, and the uncovered portion forms an observation window 24, which can be used for real-time observation by the telephoto microscope 5 equipped with a high-speed camera. By controlling the C-shaped heating tube 17, different warm environments can be created inside the high-temperature resistant glass tube 16, thereby controlling the degree of melting of ice crystal particles inside the high-temperature resistant glass tube 16.

[0040] The adjustable nozzle 6 includes a nozzle 20, a connecting pipe 21, a metal washer 22, an adjusting bracket one 19, and an adjusting bracket two 18. For example... Figure 3 As shown, the nozzle 20 and the connecting pipe 21 are connected by threads. The metal washer 22 is placed between the nozzle 20 and the connecting pipe 21. The erosion range can be controlled by changing the metal washer 22 with different inner diameters. Schematic diagrams of adjusting bracket 19 and adjusting bracket 28 are shown below. Figure 4 , Figure 5 As shown. Figure 6As shown, after the nozzle 20, connecting pipe 21, and metal washer 22 are assembled, they are fixed to the adjusting bracket 19 by threads. The adjusting bracket 19 and the adjusting bracket 28 are connected by a vertical threaded rod. The adjusting bracket 19 can rotate around the vertical threaded rod. After screwing nuts into both ends of the threaded rod, the adjusting bracket 19 can be fixed. The adjusting bracket 28 is connected to the mounting plate of the erosion environment chamber 7 by a horizontal threaded rod. The horizontal threaded rod can be screwed into the interior of the adjusting bracket 28. The adjusting bracket 28 can rotate around the horizontal threaded rod. After screwing nuts into the outer end of the threaded rod, the adjusting bracket 28 can be fixed. Since the adjusting bracket 19 and the adjusting bracket 28 can rotate around the vertical and horizontal threaded rods respectively, the erosion angle can be controlled.

[0041] like Figure 7 As shown, in addition to the cylindrical box body, the erosion environment chamber 7 includes a column clamp 23 and an observation window 25. The column clamp 23 is used to fix the erosion environment chamber 7 to the column of the tensile-torsion composite fatigue testing machine 12. The observation window 25 can be used for observation by a long-focal microscope 15 equipped with a high-speed camera.

[0042] like Figure 8 As shown, the column clamp 23 is a split structure. One split is fixed to the support arm on the side wall of the erosion environment chamber 7, and the other split is fastened to it to clamp the column of the tensile-torsion composite fatigue testing machine 12. Then, the two splits are connected by bolts to complete the fixation.

[0043] Example 2:

[0044] This embodiment provides a method for testing the particle erosion of ice crystal-water mixed phases, including the following steps:

[0045] 1) According to the test requirements, select a metal washer 22 with a suitable inner diameter, connect the nozzle 20, the metal washer 22 and the connecting pipe 21, and then connect them to the first adjusting bracket 19 and the second adjusting bracket 18 in sequence to form an adjustable nozzle 6. Then install the adjustable nozzle 6 on the mounting plate of the erosion environment chamber 7.

[0046] 2) Connect the column clamp 23 on the erosion environment chamber 7 to the column of the tension-torsion combined fatigue testing machine 12;

[0047] 3) Start the chiller 9 to provide cooling for the tensile-torsional fatigue testing machine 12;

[0048] 4) Start the controller 10, fix the test piece 11 on the clamp of the tensile-torsional fatigue testing machine 12, and determine the type and magnitude of the applied load according to the test requirements;

[0049] 5) Open valve 8 and start ice crusher 1 to produce ice crystal particles;

[0050] 6) Turn on the air compressor 2 and the particle size analyzer 3. The particle size analyzer 3 filters ice crystal particles with an equivalent diameter of less than 200 micrometers. The filtered ice crystal particles enter the high-temperature resistant glass tube 16 of the temperature control tube 6 under the action of airflow.

[0051] 7) Determine the melting degree of the ice crystal-water mixed phase particles according to the experimental requirements, adjust the heating temperature of the C-type heating tube 17 accordingly, obtain the ice crystal-water mixed phase particles with the set melting degree, and observe the melting degree of ice crystals in real time through a telephoto microscope-5 equipped with a high-speed camera.

[0052] 8) According to the test requirements, the erosion angle of the nozzle 20 can be changed by adjusting the adjusting bracket 19 and adjusting bracket 28;

[0053] 9) Turn on the particle image velocimeter 13, and adjust the air compressor 2 flow rate according to the test requirements to obtain the velocity of the ice crystal-water mixed phase particles required for the test, and carry out the ice crystal-water mixed phase particle erosion test;

[0054] 10) Start the pressure measuring instrument 14 and the long-focal microscope 15 equipped with a high-speed camera to monitor the impact pressure and damage of the test piece 11 in real time.

[0055] 11) After the test, close valve 8, tension-torsion combined fatigue testing machine 12, ice crusher 1, particle size analyzer 3, C-type heating tube 17, air compressor 2, long focal length microscope with high speed camera 5, particle image velocimeter 13, pressure measuring instrument 14 and long focal length microscope with high speed camera 15 in sequence, remove erosion environment chamber 7 and test piece 11, and turn off controller 10 and chiller 9.

[0056] Any adaptive changes made according to actual needs are within the scope of protection of this invention.

[0057] It should be noted that, for those skilled in the art, it is obvious that the present invention is not limited to the details of the exemplary embodiments described above, and that the invention can be implemented in other specific forms without departing from the spirit or essential characteristics of the invention. Therefore, the embodiments should be considered illustrative and non-limiting in all respects, and the scope of the invention is defined by the appended claims rather than the foregoing description. Thus, all variations falling within the meaning and scope of equivalents of the claims are intended to be included within the present invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

Claims

1. An ice crystal-water mixed phase particle erosion test device characterized by comprising: The system includes an ice crusher, an air compressor, a particle size analyzer, a temperature control tube, a long-focus microscope with a high-speed camera (Part 1), an adjustable nozzle, an erosion environment chamber, valves, a chiller, a controller, test specimens, a tensile-torsional fatigue testing machine, a particle image velocimeter, a pressure measuring instrument, and a second long-focus microscope with a high-speed camera. Specifically: the ice crusher generates ice crystal particles; the air compressor provides the driving airflow for the ice crystal particles; the particle size analyzer is used to screen ice crystal particles with an equivalent diameter of less than 200 micrometers; the temperature control tube is used to obtain ice-water mixed-phase particles with different melting degrees; the long-focus microscope with a high-speed camera is used for real-time online observation of the ice crystal melting process; the adjustable nozzle is fixed to the erosion environment chamber and can control the erosion range and angle; the valves determine whether the mixed-phase particles can... The test specimen is able to enter the erosion environment chamber; the erosion environment chamber is fixed on the tensile-torsional composite fatigue testing machine; the tensile-torsional composite fatigue testing machine is used to fix the test specimen and apply different loads as needed; the controller and the chiller are used to control and cool the tensile-torsional composite fatigue testing machine, respectively; the particle image velocimeter is used to monitor the velocity of the mixed phase particles in real time; the pressure measuring instrument and the long-focal microscope equipped with a high-speed camera are used to monitor the impact pressure and damage of the test specimen in real time, respectively; the ice crystal-water mixed phase particle erosion test device can simulate the erosion of test specimens under different stress states by ice crystal-water mixed phase particles with different melting degrees, providing a basis for exploring the material and structural damage mechanism caused by ice crystal-water mixed phase particle erosion during high-altitude cruise ice crystal icing. The adjustable nozzle includes an adjusting bracket one, an adjusting bracket two, and a nozzle pipe. The nozzle pipe is threadedly fixed to the adjusting bracket one. The adjusting bracket one and the adjusting bracket two are connected by a vertical threaded rod. The adjusting bracket one can rotate around the vertical threaded rod. After screwing nuts into both ends of the threaded rod, the adjusting bracket one can be fixed. The adjusting bracket two is connected to the mounting plate of the erosion environment chamber by a horizontal threaded rod. The horizontal threaded rod can be screwed into the adjusting bracket two. The adjusting bracket two can rotate around the horizontal threaded rod. After screwing nuts into the outer end of the threaded rod, the adjusting bracket two can be fixed. Since the adjusting bracket one and the adjusting bracket two can rotate around the vertical threaded rod and the horizontal threaded rod respectively, the erosion angle can be controlled. The nozzle pipe includes three parts: a nozzle head, a metal washer, and a connecting pipe. The nozzle head is threadedly connected to the connecting pipe. The metal washer is placed between the nozzle head and the connecting pipe. By replacing the metal washer with different inner diameters, the erosion range can be controlled.

2. The ice crystal-water mixed phase particle erosion test apparatus according to claim 1, characterized by, The temperature control tube includes a temperature controller, a C-shaped heating tube, and a high-temperature resistant glass tube. The C-shaped heating tube covers the high-temperature resistant glass tube, and the uncovered part can serve as the observation window of the telephoto microscope equipped with a high-speed camera. The temperature controller can control the heating of the C-shaped heating tube, which can create different warm environments inside the high-temperature resistant glass tube, thereby controlling the degree of melting of ice crystal particles inside the high-temperature resistant glass tube.

3. The ice crystal-water mixed phase particle erosion test apparatus according to claim 2, characterized by, The erosion environment chamber includes a cylindrical box, an observation window, and a column clamp. The observation window can be used as the observation window of the long-focal-length microscope equipped with a high-speed camera. The column clamp is used to fix the erosion environment chamber to the column of the tensile-torsion composite fatigue testing machine.

4. An ice crystal-water mixed phase particle erosion test method based on the ice crystal-water mixed phase particle erosion test device according to claim 3, characterized by, Includes the following steps: 1) Select a metal washer with a suitable inner diameter according to the test requirements, connect the nozzle, metal washer and connecting pipe to form a nozzle, and then connect the nozzle to the adjustment bracket one and adjustment bracket two in sequence and install it on the mounting plate of the erosion environment chamber. 2) Connect the column clamp on the erosion environment chamber to the column of the tension-torsion combined fatigue testing machine: The column clamp is a split structure. One part is fixed to the support arm on the side wall of the erosion environment chamber, and the other part is fastened to it to clamp the column of the tension-torsion combined fatigue testing machine. Then, the two parts are connected with bolts to complete the fixation. 3) Start the chiller to provide cooling for the tensile-torsional fatigue testing machine; 4) Start the controller, fix the test piece on the clamp of the tensile-torsional fatigue testing machine, and determine the type and magnitude of the applied load according to the test requirements; 5) Open the valve and start the ice crusher to produce ice crystal particles; 6) Turn on the air compressor and particle size analyzer. The particle size analyzer filters ice crystal particles with an equivalent diameter of less than 200 micrometers. The filtered ice crystal particles enter the high-temperature resistant glass tube of the temperature control tube under the action of airflow. 7) Determine the melting degree of the ice crystal-water mixed phase particles according to the experimental requirements, adjust the heating temperature of the C-shaped heating tube accordingly, obtain the ice crystal-water mixed phase particles with the set melting degree, and observe the melting degree of ice crystals in real time through a telephoto microscope equipped with a high-speed camera. 8) According to the test requirements, the erosion angle of the nozzle can be changed by adjusting the first and second adjustment brackets; 9) Turn on the particle image velocimeter and adjust the air compressor flow rate according to the test requirements to obtain the velocity of the ice crystal-water mixed phase particles required for the test, and carry out the ice crystal-water mixed phase particle erosion test; 10) Start the pressure measuring instrument and the long-focal-length microscope equipped with a high-speed camera to monitor the impact pressure and damage of the test piece in real time. 11) After the test, shut down the valves, tension-torsion combined fatigue testing machine, ice crusher, particle size analyzer, C-shaped heating tube, air compressor, long-focus microscope I equipped with high-speed camera, particle image velocimeter, pressure measuring instrument and long-focus microscope II equipped with high-speed camera in sequence, remove the erosion environment chamber and test piece, and turn off the controller and chiller.

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