CN110161048A - Super high cycle fatigue damage test system based on advanced light source in situ imaging - Google Patents

Abstract

This application provides an ultra-high cycle fatigue damage test system based on in-situ imaging of advanced light sources. By installing the load sensing device and driving device in the ultra-high cycle fatigue test equipment on the test base, the driving device and ultrasonic resonance The device is connected to fix the test piece through the ultrasonic resonance device, and drive the ultrasonic resonance device close to or away from the load sensing device through the driving device, wherein the ultrasonic resonance device applies ultrasonic resonance to the test piece when the test piece is in contact with the load sensing device Wave, the load sensing device is used to detect the load applied by the driving device, so as to realize the rapid fatigue damage test of the test piece. The present application also arranges advanced light sources and imaging capture equipment around the test equipment, so that the rays emitted by the advanced light source are projected on the test piece, and the imaging capture equipment captures the rays penetrating the test piece, so as to realize the detection of the test piece. In situ imaging monitoring of internal fatigue damage evolution.

Description

Ultra-high cycle fatigue damage test system based on advanced light source in situ imaging

technical field

This application relates to the technical field of material damage testing, in particular, to an ultra-high cycle fatigue damage testing system based on advanced light source in-situ imaging.

Background technique

With the continuous development of industrial technology, various materials will lead to different differences in the service life of the structural parts produced. Therefore, it is necessary to accurately determine the fatigue damage characteristics of the corresponding structural parts in industrial production. However, for structural parts with long service life, it is impossible to determine the fatigue damage characteristics of such structural parts in a short time by using conventional damage testing methods such as destructive sectioning, fracture identification or surface observation. The test method can only observe the fatigue characteristics of the specific damage results, but cannot observe the fatigue characteristics of the fatigue damage evolution process inside the structural parts, resulting in a poor match between the finally confirmed fatigue damage characteristics and the structural parts themselves.

Contents of the invention

In order to overcome the above-mentioned deficiencies in the prior art, the purpose of this application is to provide an ultra-high cycle fatigue damage test system based on advanced light source in-situ imaging, which can quickly complete the fatigue damage test of the test piece, and the The evolution process of ultra-high cycle fatigue damage inside the test piece during the test is monitored in situ by imaging, so as to quickly determine the fatigue damage characteristics that match the test piece.

As far as the test system is concerned, the embodiment of the present application provides an ultra-high cycle fatigue damage test system based on in-situ imaging of advanced light sources. The ultra-high cycle fatigue damage test system includes advanced light sources, imaging capture equipment and ultra-high cycle fatigue test Equipment, wherein the ultra-high cycle fatigue test equipment includes a load sensing device, an ultrasonic resonance device, a test base and a driving device;

The load sensing device is installed on the test base, and the driving device is installed on the test base and is connected with the ultrasonic resonance device for driving the ultrasonic resonance device close to or away from the load sensing device;

The piece to be tested is arranged between the load sensing device and the ultrasonic resonance device, and is fixed with the ultrasonic resonance device, wherein the ultrasonic resonance device drives the test piece to contact the load sensing device , apply ultrasonic resonance waves for ultra-high cycle fatigue tests to the test piece, and the load sensing device is used to control the force applied to the test piece by the driving device through the ultrasonic resonance device Load detection;

The ultra-high cycle fatigue test equipment is set between the advanced light source and the image capture device, the rays emitted by the advanced light source are projected on the test piece, and the image capture device is set to penetrate the The transmission path of the rays of the test piece is used to capture the rays, so as to perform in-situ imaging monitoring on the ultra-high cycle fatigue damage evolution process inside the test piece.

Compared with the prior art, the present application has the following beneficial effects:

The present application uses the driving device installed on the test base to drive the ultrasonic resonance device connected to the driving device to approach or stay away from the load sensing device installed on the test base, wherein the test piece is arranged on the ultrasonic resonance device. between the device and the load sensing device, and is fixedly connected with the ultrasonic resonance device, and when the ultrasonic resonance device drives the test piece to contact the load sensing device, it applies Ultrasonic resonance waves used for ultra-high cycle fatigue tests. At this time, the load sensing device is used to detect the load applied by the drive device to the test piece through the ultrasonic resonance device, so as to pass the The cooperation between the load sensing device, the ultrasonic resonance device, the test base and the driving device realizes the rapid fatigue damage test of the test piece. In this application, advanced light sources and imaging capture equipment are arranged around the test equipment for rapid fatigue damage testing, so that the rays emitted by the advanced light source are projected on the test piece, and the imaging capture equipment is set on the ray penetrating the test piece. on the transmission path, so that the rays penetrating the test piece are captured by the imaging capture device, so as to perform in-situ imaging monitoring on the evolution process of the ultra-high cycle fatigue damage inside the test piece, so that it can quickly determine the Matching fatigue damage characteristics.

In order to make the above-mentioned purpose, features and advantages of the present application more comprehensible, preferred embodiments of the present application will be described in detail below together with the accompanying drawings.

Description of drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present application, the following will briefly introduce the accompanying drawings used in the embodiments. It should be understood that the following drawings only show some embodiments of the present application, so It should be regarded as a limitation on the scope of protection of the present application, and those skilled in the art can also obtain other related drawings based on these drawings without creative work.

Fig. 1 is one of the structural schematic diagrams of the ultra-high cycle fatigue damage test system provided by the embodiment of the present application;

Fig. 2 is the structural representation of the test base provided by the embodiment of the present application;

Fig. 3 is an exploded schematic view of the mounting base provided by the embodiment of the present application;

Fig. 4 is one of the structural schematic diagrams of the support structure provided by the embodiment of the present application;

Fig. 5 is the second structural schematic diagram of the support structure provided by the embodiment of the present application;

Fig. 6 is one of the installation schematic diagrams of the driving device provided by the embodiment of the present application;

Fig. 7 is the second installation schematic diagram of the driving device provided by the embodiment of the present application;

Fig. 8 is the second structural schematic diagram of the ultra-high cycle fatigue damage test system provided by the embodiment of the present application;

Fig. 9 is a schematic block diagram of an ultra-high cycle fatigue damage test system provided in an embodiment of the present application.

Icons: 11-ultra-high cycle fatigue damage test system; 12-computing equipment; 13-cooling equipment; 100-ultra-high cycle fatigue test equipment; 200-advanced light source; 300-imaging capture equipment; 110-test base; Load sensing device; 130-driving device; 140-ultrasonic resonance device; 20-test piece; 210-installation base; 220-supporting structure; 211-fixed platform; 212-rotating platform; 1 mobile platform; 215-second mobile platform; 221-first support tube; 222-transmission enclosure; 223-second support tube; 224-loading plate; 225-first fixed tube; 226-second fixed tube; 227-support column; 131-fixed bracket; 132-servo electric cylinder; 133-fixed plate; 134-fixed rod; 135-fixed hole; 136-installation hole; 234-threaded rod; 235-threaded sliding block; 236-connecting rod; 141-piezoelectric transducer; 142-positioner; 143-displacement amplifier; 121-load sensor; 122-threaded connection cylinder.

Detailed ways

In order to make the purposes, technical solutions and advantages of the embodiments of the present application clearer, the technical solutions in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments It is a part of the embodiments of this application, not all of them. The components of the embodiments of the application generally described and illustrated in the figures herein may be arranged and designed in a variety of different configurations.

Accordingly, the following detailed description of the embodiments of the application provided in the accompanying drawings is not intended to limit the scope of the claimed application, but merely represents selected embodiments of the application. Based on the embodiments in this application, all other embodiments obtained by persons of ordinary skill in the art without creative efforts fall within the protection scope of this application.

It should be noted that like numerals and letters denote similar items in the following figures, therefore, once an item is defined in one figure, it does not require further definition and explanation in subsequent figures.

In the description of this application, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer" etc. The indicated orientation or positional relationship is based on the orientation or positional relationship shown in the drawings, or the orientation or positional relationship that is usually placed when the application product is used, and is only for the convenience of describing the application and simplifying the description, rather than indicating or implying References to devices or elements must have a particular orientation, be constructed, and operate in a particular orientation and therefore should not be construed as limiting the application. In addition, the terms "first", "second", "third", etc. are only used for distinguishing descriptions, and should not be construed as indicating or implying relative importance.

In the description of this application, it should also be noted that, unless otherwise clearly stipulated and limited, the terms "installation", "installation", "connection", and "connection" should be understood in a broad sense, for example, it can be a fixed connection, It can also be a detachable connection or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediary, and it can be the internal communication of two components. Those of ordinary skill in the art can understand the specific meanings of the above terms in this application in specific situations.

Some implementations of the present application will be described in detail below in conjunction with the accompanying drawings. In the case of no conflict, the following embodiments and features in the embodiments can be combined with each other.

Please refer to FIG. 1 , which is one of the structural schematic diagrams of the ultra-high cycle fatigue damage test system 11 provided by the embodiment of the present application. In the embodiment of the present application, the ultra-high cycle fatigue damage test system 11 is used to quickly perform the fatigue damage test on the sample specimen to be tested, and to check the ultra-high cycle fatigue damage inside the sample specimen to be tested during the test. The damage evolution process is monitored by in-situ imaging to ensure that the fatigue damage characteristics matching the sample specimen to be tested can be quickly determined. Wherein, the ultra-high cycle fatigue damage test system 11 includes an advanced light source 200, an imaging capture device 300 and an ultra-high cycle fatigue test equipment 100, wherein the ultra-high cycle fatigue test equipment 100 includes a load sensing device 120, an ultrasonic resonance device 140 , the test base 110 and the driving device 130 .

Please refer to FIG. 1 and FIG. 2 in conjunction, wherein FIG. 2 is a schematic structural diagram of a test base 110 provided in an embodiment of the present application. In the embodiment of the present application, the ultra-high cycle fatigue test equipment 100 is used to realize the ultra-high cycle fatigue test of the test piece 20, wherein the load sensing device 120 is installed on the test base 110 for To abut against the piece to be tested 20 so that the ultra-high cycle fatigue test equipment 100 can perform an ultrahigh cycle fatigue test on the piece to be tested 20 .

In this embodiment, the test base 110 includes an installation base 210 and a supporting structure 220 . The support structure 220 is installed on the installation base 210 , and the load sensing device 120 is disposed in the support structure 220 . Specifically, an accommodating space is provided in the supporting structure 220, and the load sensing device 120 is arranged in the accommodating space and fixedly installed at the bottom of the accommodating space. The installation base 210 is in contact with the side of the support structure 220 close to the bottom of the accommodating space, and is fixedly connected with the support structure 220 for carrying the support structure 220 .

In this embodiment, the installation base 210 may be a non-movable fixed base, or a movable base.

Optionally, please refer to FIG. 3 , which is an exploded schematic diagram of the installation base 210 provided by the embodiment of the present application. In this embodiment, when the installation base 210 is a movable base, the installation base 210 may include a fixed platform 211 , a rotating platform 212 , an installation platform 213 , a first mobile platform 214 and a second mobile platform 215 .

Wherein, a concave portion is provided on one side of the fixed platform 211, a raised portion having a size matching the concave portion is provided on one side of the rotating platform 212, and the rotating platform 212 is connected to the concave portion through the concave portion. The cooperation between the protrusions is movably connected to the fixed platform 211 and can rotate relative to the fixed platform 211 . Wherein, the tester adjusts the rotation angle of the rotating platform 212 relative to the fixed platform 211 according to the test requirements.

The installation platform 213 is arranged on the side of the rotation platform 212 away from the fixed platform 211, and is fixedly connected with the rotation platform 212, so that the rotation platform 212 drives the installation platform 213 to rotate when rotating .

The first mobile platform 214 is installed on the installation platform 213 and is movably connected with the installation platform 213 . Wherein, the first moving platform 214 can move relative to the installation platform 213 along a first moving direction, wherein the first moving direction is any direction parallel to the horizontal plane.

The second mobile platform 215 is arranged on a side of the first mobile platform 214 away from the installation platform 213 , and is movably connected with the first mobile platform 214 . Wherein, the second moving platform 215 can move relative to the first moving platform 214 along a second moving direction, wherein the second moving direction is any direction parallel to the horizontal plane, and the second moving direction can be parallel to the first moving direction, or intersect with the first moving direction. In an implementation manner of this embodiment, the second moving direction is perpendicular to the first moving direction.

The support structure 220 is fixedly connected to the second mobile platform 215, wherein the support structure 220 is away from the side of the bottom of the accommodating space, and the side of the second mobile platform 215 is away from the first mobile platform 214 relative settings.

In this embodiment, the tester can drive the support structure 220 to rotate along the Move in the moving direction, move along the second moving direction, or move in any direction on the horizontal plane, so as to adjust the test position of the test piece 20 and ensure that the test piece 20 can emit light relative to the advanced light source 200. The rays are rotated.

In the embodiment of the present application, the driving device 130 in the ultra-high cycle fatigue test equipment 100 is installed on the test base 110 and connected to the ultrasonic resonance device 140, and the test piece 20 is set Between the ultrasonic resonance device 140 and the load sensing device 120 , and fixedly connected with the ultrasonic resonance device 140 . Wherein, the driving device 130 is used to drive the ultrasonic resonance device 140 close to or away from the load sensing device 120, so that the ultrasonic resonance device 140 drives the test piece 20 close to or away from the load sensing device 120.

Wherein, when the ultrasonic resonance device 140 is under the action of the driving device 130, when the test piece 20 is in contact with the load sensing device 120, the test piece 20 is subjected to ultra-high cycle fatigue. The ultrasonic resonance wave of the test, at this time, the load sensing device 120 is also used to detect the load applied by the driving device 130 on the test piece 20 through the ultrasonic resonance device 140, so that the load The cooperation between the sensing device 120 , the ultrasonic resonance device 140 , the test base 110 and the driving device 130 realizes the rapid fatigue damage test of the object 20 to be tested.

In this embodiment, the test base 110 is fixedly connected to the driving device 130 through the supporting structure 220 .

Specifically, a test through hole is opened on the side of the support structure 220 away from the bottom of the accommodation space, so as to communicate the accommodation space in the support structure 220 with the outside through the test through hole, and the driving device 130 is arranged on the side of the support structure 220 close to the test through hole, and installed on the support structure 220 .

Wherein, the opening position of the test through hole on the support structure 220 is facing the bottom of the accommodating space, and the resonant wave application direction of the ultrasonic resonance device 140 connected to the driving device 130 is facing the bottom of the accommodating space. The load sensing device 120 in the support structure 220, so that the ultrasonic resonance device 140, driven by the driving device 130, can pass through the test through hole and extend into the accommodating space, thereby The object under test 20 to ensure that the ultrasonic resonance device 140 is fixed can be in contact with the load sensing device 120 .

In this embodiment, the ultrasonic resonance device 140 can apply an ultrasonic resonance wave with a maximum resonance frequency of 20 KHz to the test piece 20, thereby efficiently completing 10 ⁸ -10 ¹⁰ cycles of fatigue tests to greatly reduce Shorten fatigue test time. At the same time, when the ultrasonic resonance device 140 is in contact with the load sensing device 120 at a distance between the test piece 20 and the load sensing device 120, the driving device 130 can apply different degrees of constant loads to the test piece 20 to determine the Fatigue damage characteristics of the test piece 20 under different loads.

Wherein, the tester can drive the ultrasonic resonance device 140 away from the support structure 220 by controlling the driving device 130 , so that the tester installs the test piece 20 on the ultrasonic resonance wave application part of the ultrasonic resonance device 140 . In an implementation manner of this embodiment, the object under test 20 is screwed to the ultrasonic resonance device 140 . After installing the test piece 20, the tester can control the driving device 130 to drive the ultrasonic resonance device 140 close to the support structure 220, and make the ultrasonic resonance device 140 drive the test piece 20 and The load sensing device 120 located in the accommodating space is in contact, so that by controlling the operating frequency of the ultrasonic resonance device 140, an ultrasonic resonance wave for performing an ultra-high cycle fatigue test is applied to the test piece 20 , at this time, the tester can also control the working state of the driving device 130 to make the driving device 130 apply constant loads of different degrees to the test piece 20 .

In the embodiment of the present application, the advanced light source 200 and the imaging capture device 300 in the ultra-high cycle fatigue damage test system 11 are used to carry out in-situ Imaging monitoring, so as to quickly determine the fatigue damage characteristics matching the test piece 20 . In an implementation manner of this embodiment, the fixed platform 211 is fixedly connected with the platform where the advanced light source 200 is located.

Specifically, the ultra-high cycle fatigue test equipment 100 is set between the advanced light source 200 and the imaging capture device 300, and the rays emitted by the advanced light source 200 are projected on the waiting area in the support structure 220. On the test piece 20, the imaging capture device 300 is arranged on the transmission path of the rays penetrating the test piece 20, and is used to capture the rays, so as to detect the ultra- The in-situ imaging monitoring of the evolution process of high-cycle fatigue damage achieves non-destructive, high-efficiency, and high-precision observation of fatigue damage characteristics.

In the embodiment of the present application, in order to ensure that the rays emitted by the advanced light source 200 can be normally projected onto the object under test 20 , the present application proposes two implementations for the support structure 220 .

Optionally, please refer to FIG. 4 , which is one of the structural schematic diagrams of the support structure 220 provided in the embodiment of the present application. In an implementation manner of this embodiment, the support structure 220 includes a first support cylinder 221, a transmission enclosure 222 and a second support cylinder 223, wherein the second support cylinder 223 and the transmission enclosure 222 are both It is a cylindrical structure with both ends open, and the first support cylinder 221 is a cylindrical structure with one end open and the other end closed.

Wherein, the support structure 220 forms the bottom of the accommodating space through the closed end of the first support cylinder 221 , and is fixedly connected to the installation base 210 by the closed end of the first support cylinder 221 .

The transmission enclosure 222 is arranged on the side of the first support cylinder 221 away from the bottom of the accommodating space, and is installed on the side of the first support cylinder 221 where there is an opening, so that the transmission enclosure 222 The inner space of the first support cylinder 221 communicates with the inner space of the first support cylinder 221 .

The second support cylinder 223 is arranged on the side of the transmission enclosure 222 away from the first support cylinder 221, and is connected with the transmission enclosure 222, so that the inner space of the second support cylinder 223 and The internal space of the transmission enclosure 222 is connected, so that the internal space of the first support tube 221, the internal space of the transmission enclosure 222 and the internal space of the second support tube 223 are connected to each other to form the container. space, and the test through hole is formed by opening the other end of the second support cylinder 223 away from the transmission enclosure 222 .

In this embodiment, the spatial position of the test piece 20 in contact with the load sensing device 120 corresponds to the installation position of the transmission enclosure 222 in the support structure 220, so that the advanced The rays emitted by the light source 200 are projected on the test piece 20 in contact with the load sensing device 120 through the transmission enclosure 222, and the rays penetrating the test piece 20 can also pass through the test piece 20. The transmissive enclosure 222 projects out of the support structure 220 .

Wherein, the material of the transmission enclosure 222 is related to the light source type of the advanced light source 200 . For example, when the advanced light source 200 is an X-ray free electron laser generator, the transmission enclosure 222 should be made of a material that absorbs less X-rays and has higher strength, such as acrylic, quartz, carbon fiber, etc. High-strength acrylic material; when the advanced light source 200 is a spallation neutron source, the transmission enclosure 222 can be made of high specific-strength acrylic material or aluminum alloy material.

Optionally, please refer to FIG. 5 . FIG. 5 is the second structural schematic diagram of the support structure 220 provided by the embodiment of the present application. In another implementation manner of this embodiment, the supporting structure 220 includes a bearing plate 224, a transmission enclosure 222, a first fixing cylinder 225, a second fixing cylinder 226 and a plurality of supporting columns 227, wherein the first The fixing cylinder 225 , the transmission enclosure 222 and the second fixing cylinder 226 are all cylindrical structures with openings at both ends.

Wherein, the load sensing device 120 is installed on one side of the bearing plate 224 , and the other side of the bearing plate 224 away from the load sensing device 120 is fixedly connected to the installation base 210 . A plurality of support columns 227 are disposed around the load sensing device 120 and mounted on the bearing plate 224 to cooperate with the bearing plate 224 to form the bottom of the accommodating space.

The transmission enclosure 222 is arranged between the first fixing cylinder 225 and the second fixing cylinder 226, and is connected with the first fixing cylinder 225 and the second fixing cylinder 226, wherein the transmission enclosure The inner space of the cover 222 , the inner space of the first fixing cylinder 225 and the inner space of the second fixing cylinder 226 communicate with each other.

One end of each support column 227 away from the bearing plate 224 is fixedly connected to the side of the first fixing cylinder 225 away from the transmission enclosure 222, so that the internal space formed by the mutual cooperation of a plurality of support columns 227 It communicates with the inner space of the first fixed cylinder 225, thereby forming the accommodating space through several interconnected internal spaces, and forms the accommodating space through the opening at one end of the second fixed cylinder 226 away from the transmission enclosure 222. The test hole described above.

In this embodiment, the spatial position of the test piece 20 in contact with the load sensing device 120 also corresponds to the installation position of the transmission enclosure 222 in the support structure 220, so that the The rays emitted by the advanced light source 200 can be projected on the test piece 20 in contact with the load sensing device 120 through the transmission enclosure 222, and ensure that the rays penetrating the test piece 20 can also pass through the test piece 20. The transmissive enclosure 222 projects out of the support structure 220 .

In the embodiment of the present application, in order to ensure that the driving device 130 can drive the ultrasonic resonance device 140 close to or away from the load sensing device 120 located in the support structure 220 , the present application proposes for the driving device 130 There are two implementations.

Optionally, please refer to FIG. 6 , which is one of the installation diagrams of the driving device 130 provided by the embodiment of the present application. In an implementation manner of this embodiment, the driving device 130 includes a fixed bracket 131 , a servo electric cylinder 132 , a fixed plate 133 and a plurality of fixed rods 134 .

Wherein, the fixing bracket 131 is provided with a plurality of fixing holes 135, the number of the fixing holes 135 is the same as the number of the fixing rods 134, and the aperture size of each fixing hole 135 is the same as that of the fixing rods 134. End face dimensions match.

Each of the fixed rods 134 passes through the corresponding fixed hole 135 and is fixedly connected with the support structure 220 , and the fixed bracket 131 is fixedly connected with each of the fixed rods 134 and is fixedly connected with the servo electric cylinder 132 , for fixing the servo electric cylinder 132 on the support structure 220 .

A mounting hole 136 is provided at a position corresponding to each fixing rod 134 on the fixing plate 133, and the fixing plate 133 is movably connected to the fixing rod 134 through the cooperation between the mounting hole 136 and the fixing rod 134. on the rod 134 , that is, the fixed disc 133 can slide on the fixed rod 134 .

The ultrasonic resonance device 140 is fixedly installed on the fixed disk 133, and the transmission rod of the servo electric cylinder 132 is fixedly connected with the fixed disk 133, so as to drive the fixed disk 133 and the ultrasonic wave through the transmission rod. The resonance device 140 moves along the extending direction of the length of the fixed rod 134 . Wherein, the ultrasonic resonance device 140 is installed on the side of the fixed plate 133 facing the support structure 220, so as to ensure that the resonant wave application direction of the ultrasonic resonance device 140 is facing all the parts in the support structure 220. The load sensing device 120 described above.

Optionally, please refer to FIG. 7 . FIG. 7 is the second installation schematic diagram of the driving device 130 provided by the embodiment of the present application. In another implementation manner of this embodiment, the driving device 130 includes a rotating motor 231, a first fixed frame 232, a second fixed frame 233, a threaded rod 234, a threaded sliding block 235, a fixed plate 133, and a connecting rod 236 And a plurality of fixed rods 134.

Wherein, one end of the plurality of fixing rods 134 is fixedly connected to the support structure 220 , and the other end of the plurality of fixing rods 134 is fixedly connected to the first fixing frame 232 . The rotating motor 231 is fixedly installed on the first fixed frame 232, and the output rotor of the rotating motor 231 is fixedly connected with one end of the threaded rod 234 to drive the threaded rod 234 to rotate, wherein the rotating The direction of the rotation axis of the motor 231 is parallel to the extending direction of the length of the fixing rod 134 .

The second fixing bracket 233 is provided with fixing through holes corresponding to the fixing rods 134, and the second fixing bracket 233 is sleeved on a plurality of fixing rods 134 through the fixing through holes, and is connected with the fixing rods 134. The rod 134 is fixed, and the other end of the threaded rod 234 is movably connected with the second fixing frame 233 to ensure that the threaded rod 234 can rotate relative to the second fixing frame 233 .

The threaded sliding block 235 is provided with an installation through hole corresponding to the threaded rod 234, and a sliding through hole corresponding to the fixed rod 134. Matching thread construction. The threaded sliding block 235 is sleeved on the threaded rod 234 through the installation through hole, and is sleeved on the fixed rod 134 through the sliding through hole, and is connected to the fixed rod 134 through the installation through hole. The thread matching between the threaded rods 234 makes the threaded sliding block 235 slide along the extending direction of the fixed rod 134 under the rotation of the threaded rods 234 .

The side of the fixed disk 133 away from the support structure 220 is fixedly connected to the threaded sliding block 235 through the connecting rod 236, and the side of the fixed disk 133 close to the support structure 220 is fixed to the ultrasonic resonance device 140 connected so as to drive the fixed plate 133 and the ultrasonic resonance device 140 to move along the extending direction of the fixed rod 134 through the threaded sliding block 235 .

In the embodiment of the present application, the ultrasonic resonance device 140 includes a piezoelectric transducer 141 , a positioner 142 and a displacement amplifier 143 .

Wherein, the piezoelectric transducer 141, the positioner 142 and the displacement amplifier 143 are connected sequentially, wherein the piezoelectric transducer 141 is used to convert an electrical signal into a mechanical vibration signal, and the The positioner 142 transmits it to the displacement amplifier 143, so that the displacement amplifier 143 amplifies the amplitude of the received mechanical vibration signal and outputs a corresponding ultrasonic resonance wave.

In this embodiment, the positioner 142 is fixedly connected with the driving device 130 to ensure that the driving device 130 can drive the ultrasonic resonance device 140 to move; fixed together, so as to apply ultrasonic resonance waves to the test piece 20 when the ultrasonic resonance device 140 is in contact with the load sensing device 120 at a distance from the test piece 20 .

In the embodiment of the present application, the load sensing device 120 includes a load sensor 121 . The load sensor 121 is installed on the test base 110, and the load sensing device 120 can be applied to the test piece 20 by the load sensor 121 to the driving device 130 through the ultrasonic resonance device 140. Real-time detection of the load on the

In an implementation manner of this embodiment, the load sensing device 120 further includes a threaded connection cylinder 122 . One end of the threaded connection cylinder 122 is screwed to the load sensor 121, and the other end of the threaded connection cylinder 122 can be screwed to the test piece 20 when it is in contact with the test piece 20. . Wherein, when the threaded connection cylinder 122 is screwed fastened to the object under test 20, the ultrasonic resonance device 140, the object under test 20 and the load sensing device 120 are fixed together, and the driving device 130 After the ultrasonic resonance device 140 completes the corresponding ultra-high cycle fatigue test, the ultrasonic resonance device 140 may be driven to move away from the load sensing device 120, so as to apply a specific tensile stress to the test piece 20, To ensure that the internal cracks of the test piece 20 are opened, let the advanced light source 200 and the imaging capture device 300 perform in-situ imaging monitoring on the crack opening process.

In an implementation manner of this embodiment, the load sensing device 120 may further include a resonant rod. The resonant rod is arranged on the end of the threaded connection cylinder 122 away from the load sensor 121, and is screwed to the threaded connection cylinder 122, so that the test piece 20 is spaced between the resonant rod and the load sensor 121. The threaded connection cylinder 122 is in contact, and the resonance effect of the ultrasonic resonance wave applied to the test piece 20 by the ultrasonic resonance device 140 is enhanced through the resonance rod, so as to shorten the overall ultra-high cycle fatigue test duration, thereby more quickly Determine the fatigue damage characteristics matching the piece to be tested 20 .

In the embodiment of this application, when the light source types of the advanced light source 200 are different, the transmission enclosure 222 in the support structure 220 needs to be selected in addition to the material, and there is also a change in the structure, and the corresponding The number of image capture devices 300 also needs to be adjusted.

For example, when the advanced light source 200 is an X-ray free electron laser generator, there is no need to perform opening treatment on the enclosure side wall of the transmission enclosure 222, and the number of the corresponding imaging capture device 300 is one. The device 300 is directly arranged in the ray emitting direction of the advanced light source 200 , as shown in FIG. 1 .

When the advanced light source 200 is a spallation neutron source, four openings should be evenly opened on the enclosure side wall of the transmission enclosure 222 according to the included angle of 90° around, and one of the openings is used as the advanced light source 200, the opening opposite to the ray entrance is used as the transmission exit of the advanced light source 200, and the other two openings are used as the diffraction exit of the advanced light source 200. At this time, the imaging capture The number of devices 300 is three, and the three imaging capture devices 300 are respectively arranged in the ray emission directions corresponding to the transmission exit port and the two diffraction exit ports. Wherein, when the rays emitted by the advanced light source 200 enter the interior of the support structure 220 from the ray entrance and transmit to the object under test 20, the rays passing through the object under test 20 will be correspondingly divided into three ray components from The transmission exit and the two diffraction exits leave the support structure 220, and the three ray components are captured by the three imaging capture devices 300, as shown in FIG. 8 .

Optionally, please refer to FIG. 9 , which is a schematic block diagram of an ultra-high cycle fatigue damage test system 11 provided in an embodiment of the present application. In the embodiment of the present application, the ultra-high cycle fatigue damage test system 11 further includes a computing device 12 and a cooling device 13 .

The computing device 12 is electrically connected with the advanced light source 200, the imaging capture device 300 and the ultra-high cycle fatigue test device 100, and is used for the advanced light source 200, the imaging capture device 300 and the The working state of the ultra-high cycle fatigue test equipment 100 is controlled, and through the cooperation between the advanced light source 200, the imaging capture device 300 and the ultra-high cycle fatigue test equipment 100, the ultra-high Cycle fatigue damage evolution data, so as to quickly determine the fatigue damage characteristics matching the test piece 20.

Wherein, the computing device 12 can be electrically connected with the driving device 130, the ultrasonic resonance device 140 and the load sensing device 120 in the ultra-high cycle fatigue test equipment 100, so as to control the driving device 130, the ultrasonic The working state of the resonance device 140 and the load sensing device 120 quickly realizes the ultra-high cycle fatigue test on the object to be tested 20 .

In this embodiment, the computing device 12 is electrically connected to the cooling device 13 for controlling the cooling device 13 to cool the object under test 20 under test. Wherein, the cooling device 13 may include a cooling air nozzle, the cooling air nozzle is arranged in the built-in space of the support structure 220, and is facing the object under test 20 under the control of the computing device 12 Cool down.

To sum up, in the ultra-high cycle fatigue damage test system based on advanced light source in-situ imaging provided by this application, this application drives the ultrasonic resonance device connected to the drive device to approach through the drive device installed on the test base. Or away from the load sensing device installed on the test base, wherein the test piece is arranged between the ultrasonic resonance device and the load sensing device, and is fixedly connected with the ultrasonic resonance device, the ultrasonic When the resonance device drives the piece to be tested to contact with the load sensing device, it applies ultrasonic resonant waves for ultra-high cycle fatigue test to the piece to be tested. At this time, the load sensing device is used to The driving device detects the load applied to the test piece by the ultrasonic resonance device, thereby passing between the load sensing device, the ultrasonic resonance device, the test base and the driving device With the cooperation, the rapid fatigue damage test of the test piece can be realized. The present application arranges advanced light sources and imaging capture devices around the test equipment for rapid fatigue damage tests, so that the rays emitted by the advanced light sources are projected on the test piece, and the imaging capture equipment is set on the ray penetrating the test piece. on the transmission path, so that the rays penetrating the test piece are captured by the imaging capture device, so as to perform in-situ imaging monitoring on the evolution process of ultra-high cycle fatigue damage inside the test piece, so that it can quickly determine the Matching fatigue damage characteristics.

The above are just various implementation modes of the present application, but the protection scope of the present application is not limited thereto. Anyone familiar with the technical field can easily think of modifications within the technical scope disclosed in the present application. Changes or equivalent replacements shall fall within the scope of protection of this application.

Claims (10)

1. An ultra-high cycle fatigue damage test system based on advanced light source in-situ imaging, characterized in that the system includes advanced light source, imaging capture equipment and ultra-high cycle fatigue test equipment, wherein the ultra-high cycle fatigue test equipment Including load sensing device, ultrasonic resonance device, test base and driving device; The load sensing device is installed on the test base, and the driving device is installed on the test base and is connected with the ultrasonic resonance device for driving the ultrasonic resonance device close to or away from the load sensing device; The piece to be tested is arranged between the load sensing device and the ultrasonic resonance device, and is fixed with the ultrasonic resonance device, wherein the ultrasonic resonance device drives the test piece to contact the load sensing device , apply ultrasonic resonance waves for ultra-high cycle fatigue tests to the test piece, and the load sensing device is used to control the force applied to the test piece by the driving device through the ultrasonic resonance device Load detection; The ultra-high cycle fatigue test equipment is set between the advanced light source and the image capture device, the rays emitted by the advanced light source are projected on the test piece, and the image capture device is set to penetrate the The transmission path of the rays of the test piece is used to capture the rays, so as to perform in-situ imaging monitoring on the ultra-high cycle fatigue damage evolution process inside the test piece. 2. The system according to claim 1, wherein the test base comprises a mounting base and a supporting structure; An accommodating space is provided in the supporting structure, and the load sensing device is arranged in the accommodating space and fixedly installed at the bottom of the accommodating space; A test through hole is opened on the side of the support structure away from the bottom of the accommodating space, wherein the opening position of the test through hole is facing the bottom of the accommodating space; The driving device is arranged on the side of the supporting structure close to the test through hole, and is installed on the supporting structure, wherein the application direction of the resonance wave of the ultrasonic resonance device connected to the driving device is facing the The load sensing device, and the ultrasonic resonance device can pass through the test through hole and extend into the accommodating space driven by the driving device; The installation base is in contact with the side of the support structure close to the bottom of the accommodating space, and is fixedly connected with the support structure. 3. The system according to claim 2, wherein the installation base comprises a fixed platform, a rotating platform, an installation platform, a first mobile platform and a second mobile platform; A concave portion is provided on one side of the fixed platform, and a raised portion whose size matches the concave portion is arranged on one side of the rotating platform, and the rotating platform is connected to the raised portion through the concave portion. The cooperation between them is movably connected on the fixed platform, and can rotate relative to the fixed platform; The installation platform is arranged on the side of the rotation platform away from the fixed platform, and is fixedly connected with the rotation platform, and the first mobile platform is installed on the installation platform, and is movably connected with the installation platform , wherein the first mobile platform can move relative to the installation platform along a first moving direction; The second mobile platform is arranged on the side of the first mobile platform away from the installation platform, and is movably connected with the first mobile platform, wherein the second mobile platform can move relative to the first mobile platform moving along a second moving direction; The support structure is fixedly connected to the second mobile platform, wherein the side of the support structure close to the bottom of the accommodating space is opposite to the side of the second mobile platform away from the first mobile platform. 4. The system according to claim 2, wherein the support structure comprises a first support cylinder, a transmission enclosure and a second support cylinder, wherein the second support cylinder and the transmission enclosure are two A cylindrical structure with an open end; One end of the first support cylinder is closed to form the bottom of the accommodating space, and is fixedly connected to the installation base; The other end of the first support cylinder is open, the transmission enclosure is arranged on the side of the first support cylinder away from the bottom of the accommodating space, and is installed on the side of the first support cylinder where there is an opening , so that the internal space of the transmission enclosure communicates with the internal space of the first support cylinder, wherein the spatial position of the test piece when in contact with the load sensing device is the same as that of the transmission enclosure in the The setting positions in the support structure are corresponding, so that the rays emitted by the advanced light source are projected on the test piece in contact with the load sensing device through the transmission enclosure; The second support cylinder is arranged on the side of the transmission enclosure away from the first support cylinder, and is connected with the transmission enclosure, so that the inner space of the second support cylinder is in contact with the transmission enclosure. The inner space of the second support cylinder is connected, and the test through hole is formed through the opening of the other end of the second support cylinder. 5. The system according to claim 2, wherein the supporting structure comprises a bearing plate, a transmission enclosure, a first fixing cylinder, a second fixing cylinder and a plurality of supporting columns, wherein the first fixing cylinder, Both the transmission enclosure and the second fixed cylinder are cylindrical structures with openings at both ends; The load sensing device is installed on one side of the bearing plate, and the other side of the bearing plate away from the load sensing device is fixedly connected to the installation base; A plurality of the support columns are arranged around the load sensing device and installed on the bearing plate to cooperate with the bearing plate to form the bottom of the accommodating space; The transmission enclosure is arranged between the first fixing cylinder and the second fixing cylinder, and is connected with the first fixing cylinder and the second fixing cylinder, wherein the internal space of the transmission enclosure, The internal space of the first fixed cylinder and the internal space of the second fixed cylinder communicate with each other; One end of each support column away from the bearing plate is fixedly connected to the side of the first fixing cylinder away from the transmission enclosure, so that the internal space formed by the mutual cooperation of a plurality of support columns and the first The internal space of the fixing cylinder is connected, and the test through hole is formed through the opening of one end of the second fixing cylinder away from the transmission enclosure; Wherein, the spatial position of the test piece when in contact with the load sensing device corresponds to the setting position of the transmission enclosure in the support structure, so that the rays emitted by the advanced light source pass through the transmission A shroud is projected onto the test piece in contact with the load sensing device. 6. The system according to claim 2, wherein the driving device comprises a fixed bracket, a servo electric cylinder, a fixed plate and a plurality of fixed rods; The fixing bracket is provided with a plurality of fixing holes, the number of the fixing holes is the same as the number of the fixing rods, and the aperture size of each fixing hole matches the end face size of the fixing rods; Each of the fixing rods passes through a corresponding fixing hole and is fixedly connected with the support structure, and the fixing bracket is fixedly connected with each of the fixing rods and is fixedly connected with the servo electric cylinder; A mounting hole is opened on the fixed plate at a position corresponding to each fixed rod, and the fixed plate is movably connected to the fixed rod through the cooperation between the mounting hole and the fixed rod; The ultrasonic resonance device is fixedly installed on the fixed plate, and the transmission rod of the servo electric cylinder is fixedly connected with the fixed plate, so as to drive the fixed plate and the ultrasonic resonance device along the The length extension direction of the fixed rod moves. 7. The system according to claim 2, wherein the driving device comprises a rotating motor, a first fixed frame, a second fixed frame, a threaded rod, a threaded sliding block, a fixed plate, a connecting rod and a plurality of fixed rods ; One end of the plurality of fixed rods is fixedly connected to the support structure, and the other end of the plurality of fixed rods is fixedly connected to the first fixed frame; The rotating motor is fixedly installed on the first fixed frame, and the output rotor of the rotating motor is fixedly connected with one end of the threaded rod to drive the threaded rod to rotate, wherein the direction of the rotating shaft of the rotating motor parallel to the extending direction of the length of the fixing rod; The second fixing bracket is sleeved on a plurality of fixing rods and fixed with the fixing rods, and the other end of the threaded rod is movably connected with the second fixing bracket; The threaded sliding block is sleeved on the threaded rod and the fixed rod, and through thread matching with the threaded rod, the threaded sliding block moves along the fixed rod under the rotation of the threaded rod. The length of the rod slides in the direction of extension; The side of the fixed plate far away from the support structure is fixedly connected to the threaded sliding block through the connecting rod, and the side of the fixed plate close to the support structure is fixedly connected to the ultrasonic resonance device, so that through the thread The sliding block drives the fixed plate and the ultrasonic resonance device to move along the extending direction of the fixed rod. 8. The system according to any one of claims 1-7, wherein the ultrasonic resonance device comprises a piezoelectric transducer, a positioner and a displacement amplifier, wherein the positioner is fixed to the driving device connected, the displacement amplifier is fixed to one end of the test piece; The piezoelectric transducer, the positioner, and the displacement amplifier are connected in sequence, wherein the piezoelectric transducer is used to convert electrical signals into mechanical vibration signals, which will be transmitted to the displacement via the positioner. an amplifier, so that the displacement amplifier amplifies the amplitude of the received mechanical vibration signal, and outputs a corresponding ultrasonic resonance wave to the DUT. 9. The system according to claim 8, wherein the load sensing device comprises a load sensor and a threaded connection cylinder; The load sensor is installed on the test base, one end of the threaded connection cylinder is screwed to the load sensor, and the other end of the threaded connection cylinder can be connected to the test piece when it is in contact with the test piece. The object to be tested is screwed, so as to fix the ultrasonic resonance device, the object to be tested and the load sensing device together through the threaded connection cylinder. 10. The system according to claim 8, further comprising a computing device and a cooling device; The computing device is electrically connected to the advanced light source, the imaging capture device, and the ultra-high cycle fatigue test equipment, and is used to control the advanced light source, the image capture equipment, and the ultra-high cycle fatigue test equipment Control the working state of the test piece, and obtain the evolution data of the ultra-high cycle fatigue damage of the test piece; The computing device is electrically connected to the cooling device, and is used to control the cooling device to cool the DUT under test.