In-situ corrosion fatigue test apparatus

Abstract

The application provides an in-situ corrosion fatigue test device, and relates to the technical field of simulation experiment apparatuses, and comprises an adjusting mechanism and a fixing mechanism; a simulation space is arranged on a sample to be measured; the adjusting mechanism is arranged in the simulation space; a window is further arranged on the fixing mechanism; the sample to be measured can be detected by X-rays and other rays through the window, so that the detection is more comprehensive; the adjusting mechanism is separately arranged in the simulation space, so that the sample to be measured can be directly measured with the part to be measured of the sample to be measured during extensometer measurement, the total length change of the sample to be measured does not need to be measured from both ends, the measurement is more accurate, the technical problems of low measurement accuracy and incomplete detection effect in the prior art are solved, and the technical effects of high measurement accuracy and complete detection effect are achieved.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of simulation experiment equipment, in particular to an in-situ corrosion fatigue test device. BACKGROUND

[0002] There are relatively complete in-situ devices for nuclear power plant primary and secondary loop environment and mechanical loading on the market. Such devices can be used for slow strain rate tensile test, constant load stress corrosion cracking test, corrosion fatigue test, creep test, creep fatigue test, strain fatigue test, endurance strength test and hydrogen-induced delayed cracking test in high-temperature high-pressure, normal temperature normal pressure, high-temperature normal pressure or low-temperature medium environments, and can measure the crack propagation of stress corrosion cracking and the crack propagation of corrosion fatigue on-line or off-line.

[0003] In the prior art, the experimental object is generally covered with a metal experimental kettle, hot water is added in the reaction kettle, the use environment of the experimental object is simulated by pressurizing and heating the reaction kettle, and the experimental object is stretched to simulate the use scene by a tensile testing machine at both ends of the experimental object. The extensometer is located at both ends of the experimental object to measure the length of the experimental object to obtain experimental data.

[0004] However, since the experimental object is surrounded by high-temperature liquid, the extensometer cannot directly measure the precise stretching position of the experimental object, and can only measure the total stretching length from both dry sides, which has low measurement accuracy. At the same time, the reaction kettle cannot detect the experimental object by X-ray, neutron and other rays, and the detection effect is not comprehensive. SUMMARY

[0005] The present application aims to provide an in-situ corrosion fatigue test device to alleviate the technical problems of low measurement accuracy and incomplete detection effect in the prior art.

[0006] The in-situ corrosion fatigue test device provided by the present application is used for testing a sample, and includes an adjusting mechanism and a fixing mechanism.

[0007] The sample is provided with a simulation space, the adjusting mechanism is arranged in the simulation space, the adjusting mechanism is connected with the sample, and the adjusting mechanism is used for simulating the working environment of the sample to change the fatigue and corrosion state of the sample.

[0008] The fixing mechanism is provided with a receiving cavity, the sample is arranged in the receiving cavity, the sample is connected with the fixing mechanism, the fixing mechanism is used for fixing the adjusting mechanism and the sample, and the fixing mechanism is further provided with a window, and the window is arranged opposite to the sample.

[0009] In an optional embodiment, the adjusting mechanism comprises a first clamping part and a second clamping part;

[0010] The first clamping part and the second clamping part are respectively arranged at two ends of the sample to be measured, and are respectively connected with the sample to be measured, and are used for fixing the sample to be measured.

[0011] In an optional embodiment, the adjusting mechanism further comprises a tension machine;

[0012] The tension machine is connected with the first clamping part and the second clamping part respectively, and can make the first clamping part and the second clamping part approach or move away from each other, so as to stretch or compress the sample to be measured.

[0013] In an optional embodiment, the first clamping part is provided with a first connecting hole, and the second clamping part is provided with a second connecting hole;

[0014] The sample to be measured is provided with a channel, the first connecting hole is arranged through the first clamping part, and the first connecting hole is in communication with one end of the channel; the second connecting hole is arranged through the second clamping part, and the second connecting hole is in communication with the other end of the channel; and a working environment is simulated in the sample to be measured through the first connecting hole, the channel and the second connecting hole.

[0015] In an optional embodiment, the adjusting mechanism comprises a humidifier;

[0016] The humidifier is connected with the first connecting hole and the second connecting hole respectively, and is used for providing humidity in the channel.

[0017] In an optional embodiment, the adjusting mechanism further comprises a temperature regulator;

[0018] The first connecting hole and the second connecting hole are provided with a plurality of holes, each of the first connecting hole and the second connecting hole is in communication with the channel, and the temperature regulator is connected with the first connecting hole and the second connecting hole respectively, and is used for adjusting the temperature in the channel.

[0019] In an optional embodiment, the adjusting mechanism further comprises a pressure generator;

[0020] The pressure generator is connected with the first connecting hole and the second connecting hole respectively, and is used for applying pressure in the channel through the first connecting hole and the second connecting hole.

[0021] In an optional embodiment, a measuring mechanism is further included;

[0022] The measuring mechanism is connected with the adjusting mechanism, the fixing mechanism and the sample to be measured respectively, and is used for measuring the working environment of the sample to be measured.

[0023] In an optional embodiment, the fixing mechanism comprises a first shell and a second shell.

[0024] The first shell and the second shell are arranged on two sides of the sample to be measured respectively, are hinged, are provided with a first window on the first shell and a second window on the second shell, and are oppositely arranged.

[0025] In an optional embodiment, the device further comprises a ray emitting assembly and a ray receiving assembly.

[0026] The ray emitting assembly and the ray receiving assembly are oppositely arranged, and the first shell and the second shell are arranged between the ray emitting assembly and the ray receiving assembly.

[0027] The in-situ corrosion fatigue test device provided by the application comprises an adjusting mechanism and a fixing mechanism, a simulation space is arranged on a sample to be measured, the adjusting mechanism is arranged in the simulation space, the adjusting mechanism is connected with the sample to be measured, the adjusting mechanism is used for simulating the working environment of the sample to be measured, so that the sample to be measured changes in a simulated fatigue and corrosion state, a containing cavity is arranged in the fixing mechanism, the sample to be measured is arranged in the containing cavity, the sample to be measured is connected with the fixing mechanism, a window is further arranged on the fixing mechanism, the window is oppositely arranged with the sample to be measured, the fixing mechanism is used for fixing the adjusting mechanism and the sample to be measured, the sample to be measured can be detected by using X rays and other rays through the window, so that the detection is more comprehensive, the adjusting mechanism is separately arranged in the simulation space, so that the sample to be measured can be directly measured at a measurement part of the sample to be measured when the extensometer is measured, the total length change of the sample to be measured does not need to be measured from two ends, the measurement is more accurate, the technical problems of low measurement accuracy and incomplete detection effect in the prior art are solved, and the technical effects of high measurement accuracy and comprehensive detection effect are achieved. BRIEF DESCRIPTION OF DRAWINGS

[0028] In order to make the technical solutions in the specific embodiments or the prior art of the present application clearer, the accompanying drawings needed in the specific embodiments or the prior art description will be briefly introduced below. Obviously, the accompanying drawings in the following description are some embodiments of the present application, and other accompanying drawings can be obtained by those skilled in the art without any creative effort on the basis of these accompanying drawings.

[0029] Figure 1 The overall structural schematic diagram of the in-situ corrosion fatigue test device provided by the embodiment of the present application is shown in the figure.

[0030] Figure 2 The first structural schematic diagram of the in-situ corrosion fatigue test device provided by the embodiment of the present application is shown in the figure.

[0031] Figure 3 The second structural schematic diagram of the in-situ corrosion fatigue test device provided by the embodiment of the present application is shown in the figure.

[0032] Figure 4 The third structural schematic diagram of the in-situ corrosion fatigue test device provided by the embodiment of the present application is shown in the figure.

[0033] Figure 5 The fourth structural schematic diagram of the in-situ corrosion fatigue test device provided by the embodiment of the present application is shown in the figure.

[0034] Figure 6 The fifth structural schematic diagram of the in-situ corrosion fatigue test device provided by the embodiment of the present application is shown in the figure.

[0035] Figure 7 The sixth structural schematic diagram of the in-situ corrosion fatigue test device provided by the embodiment of the present application is shown in the figure.

[0036] Figure 8 The structural schematic diagram of the sample to be tested provided by the embodiment of the present application is shown in the figure.

[0037] Figure 9 The sectional view of the sample to be tested provided by the embodiment of the present application is shown in the figure.

[0038] Figure legend: 100-sample to be tested; 200-adjusting mechanism; 210-second clamping part; 220-first clamping part; 230-second connecting hole; 240-first connecting hole; 300-fixing mechanism; 310-first shell; 320-second shell; 330-first window; 340-second window. DETAILED DESCRIPTION

[0039] In order to make the objects, technical solutions and advantages of the embodiments of the present application clearer, the following will clearly and completely describe the technical solutions in the embodiments of the present application with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only some but not all of the embodiments of the present application. The components of the embodiments of the present application described and shown in the drawings can be arranged and designed in various different configurations.

[0040] Therefore, the following detailed description of the embodiments of the present application provided in the drawings is not intended to limit the scope of the claimed application, but only represents selected embodiments of the application. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative work are within the scope of protection of the present application.

[0041] It should be noted that: similar reference numbers and letters represent similar items in the following drawings, therefore, once an item is defined in one drawing, it does not need to be further defined and explained in subsequent drawings.

[0042] In the description of the present application, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer" and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, or the orientation or positional relationship when the product of the present application is usually placed, and are only for the convenience of describing the present application and simplifying the description, and therefore cannot be understood as indicating or implying that the indicated device or element must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the present application. In addition, the terms "first", "second", "third" and the like are only used for differentiation and cannot be understood as indicating or implying relative importance.

[0043] In addition, the terms "horizontal", "vertical", "overhanging" and the like do not mean that the components must be absolutely horizontal or overhanging, but can be slightly inclined. For example, "horizontal" only means that its direction is relatively more horizontal than "vertical", and does not mean that the structure must be completely horizontal, but can be slightly inclined.

[0044] In the description of the present application, it should also be noted that, unless otherwise explicitly specified and limited, the terms "arrangement", "installation", "connection", "connection" should be understood broadly, for example, it can be fixedly connected, or it can be detachably connected, or integrally connected; it can be mechanically connected, or it can be electrically connected; it can be directly connected, or it can be indirectly connected through an intermediate medium; it can be the communication inside two elements. For those of ordinary skill in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0045] Some embodiments of the present application will be described in detail with reference to the drawings below. The following examples and features in the examples can be combined with each other in the case of no conflict.

[0046] At present, because the experimental object is surrounded by high-temperature liquid, the extensometer cannot directly measure the accurate stretching position of the experimental object, and can only measure the total stretching length from the two dry sides, the measurement accuracy is low, and the setting of the reaction kettle cannot detect the experimental object through X-ray and other rays, and the detection effect is not comprehensive.

[0047] Therefore, as shown in the present application, the in-situ corrosion fatigue test device provided by the embodiments comprises: Figures 1-9 The in-situ corrosion fatigue test device provided by the embodiments comprises: an adjusting mechanism 200 and a fixing mechanism 300; a simulation space is arranged on the sample 100 to be measured, the adjusting mechanism 200 is arranged in the simulation space, the adjusting mechanism 200 is connected with the sample 100 to be measured, and the adjusting mechanism 200 is used to simulate the working environment of the sample 100 to be measured, so that the sample 100 to be measured changes in the simulated fatigue and corrosion state; the fixing mechanism 300 is provided with a containing cavity, the sample 100 to be measured is arranged in the containing cavity, and the sample 100 to be measured is connected with the fixing mechanism 300; the fixing mechanism 300 is also provided with a window, the window is arranged opposite to the sample 100 to be measured, and the fixing mechanism 300 is used to fix the adjusting mechanism 200 and the sample 100 to be measured.

[0048] The in-situ corrosion fatigue test device provided by the embodiments comprises: an adjusting mechanism 200 and a fixing mechanism 300; a simulation space is arranged on the sample 100 to be measured, the adjusting mechanism 200 is arranged in the simulation space, the adjusting mechanism 200 is connected with the sample 100 to be measured, and the adjusting mechanism 200 is used to simulate the working environment of the sample 100 to be measured, so that the sample 100 to be measured changes in the simulated fatigue and corrosion state; the fixing mechanism 300 is provided with a containing cavity, the sample 100 to be measured is arranged in the containing cavity, and the sample 100 to be measured is connected with the fixing mechanism 300; the fixing mechanism 300 is also provided with a window, the window is arranged opposite to the sample 100 to be measured, and the fixing mechanism 300 is used to fix the adjusting mechanism 200 and the sample 100 to be measured.

[0049] The structure and shape of the sample 100 to be measured are as follows:

[0050] The to-be-tested sample 100 is hollow inside and is provided with a channel. The to-be-tested sample 100 can adopt a metal pipe used. A necked section is arranged at a middle position of the to-be-tested sample 100. The necked section is used for measuring the tensile value of the to-be-tested sample 100 in the tensile experiment. The simulation space of the to-be-tested sample 100 includes two ends of the to-be-tested sample 100 and the channel inside the to-be-tested sample 100.

[0051] Regarding the structure and shape of the adjusting mechanism 200, specifically:

[0052] The adjusting mechanism 200 includes a first clamping part 220, a second clamping part 210, a tension machine, a first connecting hole 240, a second connecting hole 230, a humidifier, a temperature regulator, and a pressure generator. The first clamping part 220 and the second clamping part 210 can adopt a metal material. The first clamping part 220 and the second clamping part 210 can both adopt a cylindrical metal. A plurality of first connecting holes 240 are arranged on the annular side wall of the first clamping part 220. Each first connecting hole 240 extends towards the axis direction close to the first clamping part 220, so that each first connecting hole 240 converges together and then extends again towards the to-be-tested sample 100 close to the end face, so that each first connecting hole 240 is in communication with the channel of the to-be-tested sample 100. It should be noted that the structure and shape of the first connecting hole 240, the first clamping part 220, the second connecting hole 230, and the second clamping part 210 can be inconsistent, as long as the function of one-in and one-out of the medium is realized. 230240, so that each second connecting hole 230 is in communication with the channel of the to-be-tested sample 100. Connection pipes are arranged at the two ends of the first clamping part 220 and the second clamping part 210 close to each other. The two connection pipes can be provided with internal threads on both sides and are connected with the external threads at the two ends of the to-be-tested sample 100, so that the first clamping part 220 and the second clamping part 210 are firmly connected with the to-be-tested sample 100. Further, the end of the first clamping part 220 and the second clamping part 210 away from each other can be provided with a threaded hole. The tension machine is connected with the first clamping part 220 and the second clamping part 210 through the two threaded holes, and can also be connected in other detachable ways. The tension machine moves the first clamping part 220 away from the second clamping part 210 by pulling, so that the to-be-tested sample 100 is elongated, thereby judging the state of the to-be-tested sample in the tensile state. The humidifier, the temperature regulator, and the pressure generator can be a gas pump with pressure and heating functions. The gas pump is connected with the first connecting hole 240 and the second connecting hole 230 respectively to form a circulating loop, to deliver fluid into the to-be-tested sample 100 and control the pressure of the fluid in the channel of the to-be-tested sample 100. At the same time, the temperature and humidity of the delivered fluid can also be controlled, so as to simulate the use scene of the sample.

[0053] Optionally, the adjusting mechanism 200 can further comprise a chemical component, which can be a device for simulating corrosion or simulating reactants, and is used to add chemical elements to the fluid in the channel of the sample 100 to be tested, so as to make the environment of the sample 100 to be tested close to the actual working environment.

[0054] Regarding the structure and shape of the fixing mechanism 300, specifically:

[0055] The fixing mechanism 300 comprises a first shell 310, a second shell 320, a first window 330 and a second window 340, and is hollow inside for accommodating the sample 100 to be tested and the detecting mechanism. The first shell 310 and the second shell 320 can be connected by hinging or by bonding. After the sample 100 to be tested is broken, the medium inside the first shell 310 and the second shell 320 can avoid being sprayed around, which can protect the surrounding experimental personnel and instruments. The first shell 310 and the second shell 320 can be made of metal. The two ends of the first shell 310 and the second shell 320 can be respectively provided with semicircular grooves, so that the two ends of the first shell 310 and the second shell 320 are respectively provided with a circular through hole for fixing the first clamping part 220 and the second clamping part 210 in the closed state, and the diameter of the circular through hole is consistent with the diameter of the first clamping part 220. One end of the first shell 310 and the second shell 320 can be hinged by a metal hinge, so that the first shell 310 and the second shell 320 can be opened, which is convenient for replacing the sample 100 to be tested and for placing the extension rod or the sensing extension rod of the extensometer on the sample 100 to be tested. Meanwhile, a first window 330 is arranged on the first shell 310, and the first window 330 is arranged corresponding to the necked section of the sample 100 to be tested and penetrates along the thickness direction of the first shell 310. Diamond window or beryllium window or other materials with good penetration to light source rays and certain high temperature stability can be used on the first window 330, so as to prevent external impurities from entering the accommodation cavity and affecting the experiment, and at the same time, the measuring rays can pass through. When the first shell 310 and the second shell 320 are in the closed state, the second window 340 penetrates along the thickness direction of the second shell 320. The axis of the second window 340 can be arranged coincident with the axis of the first window 330. The second window 340 can be arranged corresponding to the necked section of the sample 100 to be tested. Diamond window or beryllium window or other materials with good penetration to light source rays and certain high temperature stability can be used on the second window 340, and the diameter of the second window 340 is greater than that of the first window 330. The second window 340 is used for output of the measuring rays.

[0056] Regarding the structure and shape of the ray emitting component and the ray receiving component, specifically:

[0057] The ray emitting assembly is arranged opposite to the first window 330, and the ray emitting assembly can be arranged as an X-ray or neutron emitter. The ray emitting assembly is used to emit rays to the necked section of the sample 100 to be measured through the first window 330. The ray receiving assembly is arranged opposite to the second window 340, and the ray receiving assembly is used to receive the emergent ray signal. The ray receiving assembly can receive the emergent ray signal irradiated through the second window 340 after passing through the necked section of the sample 100 to be measured, so as to analyze the detailed state of the sample 100 to be measured during the experiment.

[0058] Regarding the structure and shape of the measuring mechanism, specifically:

[0059] The measuring mechanism includes a pressure gauge, an extensometer, a thermometer, and a hygrometer. The pressure gauge can be arranged on the end face of the first connecting hole 240 or the second connecting hole 230. The position of the pressure gauge includes but is not limited to any position in the internal space formed after the first shell 310 and the second shell 320 are closed. The pressure gauge is mainly used to measure the pressure of the medium in the channel of the sample 100 to be measured. The pressure gauge can also be arranged in the first shell 310 and the second shell 320. The pressure gauge is used to measure the pressure in the internal space after the first shell 310 and the second shell 320 are closed. After the sample 100 to be measured is broken, the internal medium is sprayed out, causing the pressure in the internal space after the first shell 310 and the second shell 320 are closed to increase, thereby alarming the experimenter. The thermometer can be arranged on the outer surface of the sample 100 to be measured and can be attached to the sample 100 to be measured. The thermometer can measure the temperature of the sample 100 to be measured. The thermometer can also be arranged on the end face of the first connecting hole 240 or the second connecting hole 230. The thermometer can measure the temperature of the medium before entering the channel of the sample 100 to be measured and the temperature of the medium after exiting the channel of the sample 100 to be measured. The thermometer can be arranged at any position in the internal space formed after the first shell 310 and the second shell 320 are closed. The hygrometer can be arranged at any position in the internal space formed after the first shell 310 and the second shell 320 are closed. The hygrometer is arranged in the accommodation cavity and connected to the inner wall of the accommodation cavity. Further, two semicircular grooves are arranged at the openings of the first shell 310 and the second shell 320, respectively, so that two circular through holes are arranged at the opening positions of the first shell 310 and the second shell 320 in the closed state. The extensometer is arranged in the two through holes of the first shell 310 and the second shell 320. The extensometer rod or the extension rod thereof can extend into the accommodation cavity and abut against the outer wall of the sample 100 to be measured, so that the extensometer can measure the deformation of the sample 100 to be measured during the experiment.

[0060] It should be noted that the above embodiments are only used to illustrate the technical solutions of the present application, and are not intended to limit the present application; although the present application has been described in detail with reference to the above embodiments, those skilled in the art should understand that the technical solutions recorded in the above embodiments can be modified, or some or all of the technical features can be replaced by equivalents; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the scope of the technical solutions of the embodiments of the present application.

Claims

1. An in-situ corrosion fatigue testing apparatus for conducting an experiment on a sample under test (100), characterized by, The utility model relates to a kind of fatigue and corrosion simulation test device, including: Adjusting mechanism (200) and fixed mechanism (300); Simulated space is provided on the sample (100) to be measured, the adjusting mechanism (200) is arranged in the simulated space, the adjusting mechanism (200) is connected with the sample (100) to be measured, the adjusting mechanism (200) is used to simulate the working environment of the sample (100) to be measured, so that the sample (100) to be measured is simulated fatigue and corrosion state change; The fixed mechanism (300) is provided with a containing cavity, and the sample (100) to be measured is arranged in the containing cavity, the sample (100) to be measured is connected with the fixed mechanism (300), and the fixed mechanism (300) is used to fix the adjusting mechanism (200) and the sample (100) to be measured. The fixed mechanism (300) is further provided with a window, and the window is arranged opposite to the sample (100) to be measured; The adjusting mechanism (200) includes first clamping part (220) and second clamping part (210); The first clamping part (220) and the second clamping part (210) are arranged at two ends of the sample (100) to be measured respectively, and the first clamping part (220) and the second clamping part (210) are connected with the sample (100) to be measured respectively. The first clamping part (220) and the second clamping part (210) are used for fixing the sample (100) to be measured; The adjusting mechanism (200) further includes a tension machine; The tension machine is connected with the first clamping part (220) and the second clamping part (210) respectively, and the tension machine can make the first clamping part (220) and the second clamping part (210) approach or move away from each other, so that the sample (100) to be measured is stretched or compressed.

2. The in-situ corrosion fatigue testing apparatus of claim 1, wherein The first clamping part (220) is provided with a first connecting hole (240), and the second clamping part (210) is provided with a second connecting hole (230); The sample (100) to be measured is provided with a channel, the first connecting hole (240) is arranged through the first clamping part (220), the first connecting hole (240) is communicated with one end of the channel, the second connecting hole (230) is arranged through the second clamping part (210), and the second connecting hole (230) is communicated with the other end of the channel.

3. The apparatus for in-situ corrosion fatigue testing of claim 1, wherein The first connecting hole (240), the channel and the second connecting hole (230) simulate the working environment in the sample (100) to be measured. The adjusting mechanism (200) includes a humidifier; The humidifier is connected with the first connecting hole (240) and the second connecting hole (230) respectively, and the humidifier is used to adjust the humidity in the channel. The adjusting mechanism (200) further includes a temperature regulator. The first connecting hole (240) and the second connecting hole (230) are provided with a plurality of, each of the first connecting hole (240) and the second connecting hole (230) is communicated with the channel, the thermostat is connected with the first connecting hole (240) and the second connecting hole (230) respectively, and the thermostat is used for adjusting the temperature in the channel.

4. The apparatus for in-situ corrosion fatigue testing of claim 3, wherein, The adjusting mechanism (200) further comprises a pressurizer; The pressurizer is connected with the first connecting hole (240) and the second connecting hole (230) respectively, and the pressurizer is used for applying pressure to the channel through the first connecting hole (240) and the second connecting hole (230).

5. The in-situ corrosion fatigue testing apparatus of claim 1, wherein Further comprising a measuring mechanism; The measuring mechanism is connected with the adjusting mechanism (200) respectively, the measuring mechanism extends into the fixing mechanism (300) and is connected with the sample (100), and the measuring mechanism is used for measuring the working environment and state change of the sample (100).

6. The apparatus for in-situ corrosion fatigue testing of any one of claims 1-5, wherein, The fixing mechanism (300) comprises a first shell (310) and a second shell (320); The first shell (310) and the second shell (320) are respectively arranged on the two sides of the sample (100), the first shell (310) and the second shell (320) are hinged, the first shell (310) is provided with a first window (330), the second shell (320) is provided with a second window (340), the first window (330) and the second window (340) are oppositely arranged, and the first shell (310) and the second shell (320) are respectively clamped with the adjusting mechanism (200).

7. The in-situ corrosion fatigue testing apparatus of claim 6, wherein Further comprising a ray emitting assembly and a ray receiving assembly; The ray emitting assembly and the ray receiving assembly are oppositely arranged, the first shell (310) and the second shell (320) are arranged between the ray emitting assembly and the ray receiving assembly, the ray emitting assembly is used for emitting rays, the ray receiving assembly is used for receiving rays, and the rays emitted by the ray emitting assembly pass through the first window (330) and the sample (100) and then pass through the second window (340) and are received by the ray receiving assembly.

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