Method, device and equipment for evaluating damage state of carbon fiber component and train

Abstract

The invention provides a method, device and equipment for evaluating the damage state of a carbon fiber component and a train, and relates to the field of traffic engineering and the field of railway vehicles. The method comprises the following steps: acquiring impact energy of the carbon fiber component in an impacted state; based on a comparison result between the impact energy and a critical energy threshold value, a damage expansion evaluation result is determined, the damage expansion evaluation result represents the damage expansion rate of the damage state of the carbon fiber component, and the critical energy threshold value is determined based on the following operations that the impact state of the simulation component is simulated, and the impact state of the simulation component is calculated; initial simulation damage states corresponding to the simulation impact energy are obtained, and the simulation component represents the carbon fiber component; a simulation fatigue load is applied to the simulation component with the initial simulation damage state, and a simulation damage expansion detection result of the initial simulation state is obtained; and determining at least one critical energy threshold based on the simulation damage expansion detection results corresponding to the simulation impact energy.

Description

Technical Field

[0001] The present disclosure relates to the fields of traffic engineering and rail vehicles, and more specifically, to a method, device, train, equipment, storage medium and program product for evaluating the damage state of a carbon fiber component. Background Art

[0002] Carbon fiber composite materials have the advantages of high specific strength and high specific stiffness along the fiber direction, and can be used in components such as bearing parts of rail vehicles such as high-speed trains and urban rail trains. For example, the main bearing structural parts such as car bodies, side beams, and bogies can be manufactured based on carbon fiber composite materials in trains.

[0003] The inventors found that, due to the complex structural design and manufacturing process of carbon fiber composite materials, fiber breakage and other damage conditions are likely to occur. It is difficult to inspect or maintain the load-bearing structural parts during the operation of the train, and it is difficult to accurately and real-time detect the damage status of the load-bearing structural parts. Summary of the invention

[0004] In view of this, the present disclosure provides a method, an apparatus, a train, a device, a storage medium, and a program product for evaluating the damage state of a carbon fiber component.

[0005] One aspect of the present disclosure provides a method for evaluating the damage state of a carbon fiber component, comprising: obtaining the impact energy of the carbon fiber component in an impacted state; determining a damage extension assessment result based on a comparison result between the impact energy and a critical energy threshold, wherein the damage extension assessment result characterizes the damage extension rate of the damage state of the carbon fiber component, and the critical energy threshold is determined based on the following operations: simulating an impacted state of a simulated component to obtain initial simulated damage states corresponding to multiple simulated impact energies, the simulated component characterizing the carbon fiber component; applying a simulated fatigue load to the simulated component having the initial simulated damage state to obtain a simulated damage extension detection result of the initial simulated state; and determining at least one of the critical energy thresholds based on the simulated damage extension detection results corresponding to multiple simulated impact energies.

[0006] According to an embodiment of the present disclosure, the above-mentioned simulated damage extension detection result includes a simulated damage extension rate; wherein, the above-mentioned determination of at least one of the above-mentioned critical energy threshold values ​​based on the simulated damage extension detection results corresponding to each of the above-mentioned multiple simulated impact energies includes: determining the damage extension slope between at least two simulated damage extension rates in a preset coordinate system constructed based on the above-mentioned simulated damage extension rate and the above-mentioned simulated impact energy; determining at least one target damage extension slope characterizing a change in slope from the above-mentioned multiple damage extension slopes; and determining at least one of the above-mentioned critical energy threshold values ​​based on at least one simulated impact energy corresponding to the above-mentioned target damage extension slope.

[0007] According to an embodiment of the present disclosure, the damage extension assessment result determined based on the comparison result between the impact energy and the critical energy threshold includes: in response to the first comparison result that the comparison result is characterizing that the impact energy is less than or equal to the first critical energy threshold, determining a first assessment result, the first assessment result characterizing that the damage state of the carbon fiber component will not extend; in response to the second comparison result that the comparison result is characterizing that the impact energy is greater than the first critical energy threshold and less than the second critical energy threshold, determining a second assessment result, the second assessment result characterizing that the damage extension rate of the damage state of the carbon fiber component is a first rate level, and the first critical energy threshold is less than the second critical energy threshold; in response to the third comparison result that the comparison result is characterizing that the impact energy is greater than the second critical energy threshold, determining a third assessment result, the third assessment result characterizing that the damage extension rate of the damage state of the carbon fiber component is a second rate level, and the damage extension rate characterized by the first rate level is less than the damage extension rate characterized by the second rate level.

[0008] According to an embodiment of the present disclosure, the above-mentioned obtaining of the impact energy of the carbon fiber component in the impact state includes: obtaining an impact sensing signal collected by a sensor installed on the above-mentioned carbon fiber component in the impact state; and determining the above-mentioned impact energy based on the above-mentioned impact sensing signal.

[0009] According to an embodiment of the present disclosure, the above-mentioned determination of the impact energy based on the above-mentioned impact sensing signal includes: determining an impact sensing waveform diagram based on the above-mentioned impact sensing signal, the above-mentioned impact sensing waveform diagram characterizing the component deformation of the above-mentioned carbon fiber component in the above-mentioned impacted state; based on the similarity between the above-mentioned impact sensing waveform diagram and the preset sensing waveform diagram, determining a target preset sensing waveform diagram matching the above-mentioned impact sensing waveform diagram from a preset sensing waveform diagram library; and determining the simulated impact energy associated with the above-mentioned target preset sensing waveform diagram as the above-mentioned impact energy.

[0010] According to an embodiment of the present disclosure, there is a mapping relationship between the above-mentioned preset sensing waveform diagram and the simulated impact energy, and the above-mentioned mapping relationship is determined based on the following operations: according to the sample impact sensing signal collected by the sensor installed on the sample carbon fiber component in the sample impact state, the sample impact sensing waveform diagram is determined, wherein the above-mentioned sample impact state is generated by applying a sample impact force to the above-mentioned sample carbon fiber component; based on the preset simulated impact energy, the above-mentioned sample impact state is simulated for a simulated sample component having the same component parameters as the above-mentioned sample carbon fiber component to obtain a simulated sample damage state; and in response to the above-mentioned simulated sample damage state, which is the same as the sample damage state generated by the above-mentioned sample carbon fiber component based on the above-mentioned sample impact state, the above-mentioned sample impact sensing waveform diagram is used as the above-mentioned preset impact sensing waveform diagram to determine the mapping relationship between the above-mentioned simulated impact energy and the above-mentioned preset impact sensing waveform diagram.

[0011] According to an embodiment of the present disclosure, the damage state includes at least one of the following: a damage size of the surface of the carbon fiber component; and a damage depth of the carbon fiber component.

[0012] According to an embodiment of the present disclosure, the carbon fiber component is installed on a train.

[0013] Another aspect of the present disclosure also provides a device for evaluating the damage state of a carbon fiber component, comprising: an acquisition module, used to acquire the impact energy of the carbon fiber component in an impacted state; an evaluation module, used to determine a damage extension evaluation result based on a comparison result between the above impact energy and a critical energy threshold, wherein the above damage extension evaluation result characterizes the damage extension rate of the damage state of the above carbon fiber component, and the above critical energy threshold is determined based on the following operations: simulating the impact state of a simulated component to obtain an initial simulated damage state corresponding to each of a plurality of simulated impact energies, the simulated component characterizing the above carbon fiber component; applying a simulated fatigue load to the simulated component having the above initial simulated damage state to obtain a simulated damage extension detection result of the above initial simulated state; and determining at least one of the above critical energy thresholds based on the simulated damage extension detection results corresponding to each of the above plurality of simulated impact energies.

[0014] Another aspect of the present disclosure provides a train, comprising: a carbon fiber component installed on a train body; a sensor installed on the carbon fiber component, the sensor being configured to collect an impact sensing signal of the carbon fiber component in an impacted state; and a device for evaluating the damage state of the carbon fiber component provided in an embodiment of the present disclosure, configured to determine the impact energy based on the impact sensing signal, and determine a damage extension evaluation result of the carbon fiber component in an impacted state based on the impact energy.

[0015] Another aspect of the present disclosure provides an electronic device, comprising:

[0016] one or more processors;

[0017] a memory for storing one or more programs,

[0018] When the one or more programs are executed by the one or more processors, the one or more processors implement the method as described above.

[0019] Another aspect of the present disclosure provides a computer-readable storage medium storing computer-executable instructions, which are used to implement the above method when executed.

[0020] Another aspect of the present disclosure provides a computer program product, which includes computer executable instructions, and when the instructions are executed, are used to implement the method as described above.

[0021] According to the embodiments of the present disclosure, by obtaining the impact energy of the carbon fiber component in the impact state, and determining the damage state assessment result of the damage extension rate that characterizes the damage state of the carbon fiber component by comparing the impact energy and the critical energy threshold, the damage extension rate of the component can be accurately assessed without disassembling the carbon fiber component, so as to more accurately determine the life of the component after the impact. By simulating the impact state of the simulation component and applying fatigue load to the initial simulation damage state, the damage extension rate of the simulation component under each simulation impact energy condition can be more accurately simulated, so as to determine the critical energy threshold through the damage extension rate characterized by the damage extension detection result, and the damage effect of the impact energy on the carbon fiber component can be more accurately characterized, at least partially solving the technical problem of low accuracy in the damage state assessment of the carbon fiber component, and improving the accuracy of the health detection of the carbon fiber component. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] The above and other objects, features and advantages of the present disclosure will become more apparent through the following description of the embodiments of the present disclosure with reference to the accompanying drawings, in which:

[0023] Figure 1 The application scenario diagram of the method and device for evaluating the damage state of a carbon fiber component according to an embodiment of the present disclosure is schematically shown.

[0024] Figure 2 A flow chart of a method for evaluating a damage state of a carbon fiber component according to an embodiment of the present disclosure is schematically shown.

[0025] Figure 3 A schematic diagram of a carbon fiber component according to an embodiment of the present disclosure is schematically shown.

[0026] Figure 4 A schematic diagram of a sample carbon fiber member according to an embodiment of the present disclosure is schematically shown.

[0027] Figure 5 The flowchart for determining the mapping relationship between the preset induction waveform and the simulated impact energy according to an embodiment of the present disclosure is schematically shown.

[0028] Figure 6 A schematic diagram of a critical energy threshold according to an embodiment of the present disclosure is schematically shown.

[0029] Figure 7 A block diagram schematically shows a device for evaluating a damage state of a carbon fiber component according to an embodiment of the present disclosure.

[0030] Figure 8 A block diagram of an electronic device suitable for implementing a method for evaluating a damage state of a carbon fiber component according to an embodiment of the present disclosure is schematically shown. DETAILED DESCRIPTION

[0031] Hereinafter, embodiments of the present disclosure will be described with reference to the accompanying drawings. However, it should be understood that these descriptions are exemplary only and are not intended to limit the scope of the present disclosure. In the following detailed description, for ease of explanation, many specific details are set forth to provide a comprehensive understanding of the embodiments of the present disclosure. However, it is apparent that one or more embodiments may also be implemented without these specific details. In addition, in the following description, descriptions of known structures and technologies are omitted to avoid unnecessary confusion of the concepts of the present disclosure.

[0032] The terms used herein are only for describing specific embodiments and are not intended to limit the present disclosure. The terms "comprise", "include", etc. used herein indicate the existence of the features, steps, operations and / or components, but do not exclude the existence or addition of one or more other features, steps, operations or components.

[0033] All terms (including technical and scientific terms) used herein have the meanings commonly understood by those skilled in the art unless otherwise defined. It should be noted that the terms used herein should be interpreted as having a meaning consistent with the context of this specification and should not be interpreted in an idealized or overly rigid manner.

[0034] When using expressions such as "at least one of A, B, and C, etc.", they should generally be interpreted according to the meaning of the expression commonly understood by those skilled in the art (for example, "a system having at least one of A, B, and C" should include but is not limited to a system having A alone, B alone, C alone, A and B, A and C, B and C, and / or A, B, C, etc.).

[0035] In the embodiments of the present disclosure, the collection, updating, analysis, processing, use, transmission, provision, disclosure, storage, etc. of the data involved (for example, including but not limited to user personal information) are in compliance with the provisions of relevant laws and regulations, are used for legitimate purposes, and do not violate public order and good morals. In particular, necessary measures are taken for user personal information to prevent illegal access to user personal information data and maintain the security of user personal information, network security, and national security.

[0036] In the embodiments of the present disclosure, the user's authorization or consent is obtained before obtaining or collecting the user's personal information.

[0037] The embodiments of the present disclosure provide a method, device, train, equipment, storage medium and program product for evaluating the damage state of a carbon fiber component. The method for evaluating the damage state of a carbon fiber component includes: determining a damage extension evaluation result based on a comparison result between impact energy and a critical energy threshold, wherein the damage extension evaluation result characterizes the damage extension rate of the damage state of the carbon fiber component, and the critical energy threshold is determined based on the following operations: simulating the impact state of a simulated component to obtain an initial simulated damage state corresponding to each of a plurality of simulated impact energies, wherein the simulated component characterizes the carbon fiber component; applying a simulated fatigue load to a simulated component with an initial simulated damage state to obtain a simulated damage extension detection result of the initial simulated state; and determining at least one critical energy threshold based on the simulated damage extension detection results corresponding to each of a plurality of simulated impact energies.

[0038] According to the embodiments of the present disclosure, by obtaining the impact energy of the carbon fiber component in the impact state, and determining the damage state assessment result of the damage extension rate that characterizes the damage state of the carbon fiber component by comparing the impact energy and the critical energy threshold, the damage extension rate of the component can be accurately assessed without disassembling the carbon fiber component, so as to more accurately determine the life of the component after the impact. By simulating the impact state of the simulation component and applying fatigue load to the initial simulation damage state, the damage extension rate of the simulation component under each simulation impact energy condition can be more accurately simulated, so as to determine the critical energy threshold through the damage extension rate characterized by the damage extension detection result, and the damage effect of the impact energy on the carbon fiber component can be more accurately characterized, at least partially solving the technical problem of low accuracy in the damage state assessment of the carbon fiber component, and improving the accuracy of the health detection of the carbon fiber component.

[0039] Figure 1 The application scenario diagram of the method and device for evaluating the damage state of a carbon fiber component according to an embodiment of the present disclosure is schematically shown.

[0040] like Figure 1As shown, the application scenario 100 according to this embodiment may include a vehicle 101, a terminal device 102, a network 103 and a server 104. The network 103 is used to provide a medium for a communication link between the vehicle 101 and the server 104. The network 103 may include various connection types, such as wired, wireless communication links or optical fiber cables, etc.

[0041] The vehicle 101 may include a high-speed train, an urban rail train or other rail transit vehicle, and the vehicle 101 may be equipped with carbon fiber components. The user may operate a computer or other device installed in the vehicle 101 to interact with the server 104 through the network 103 to receive or send messages, etc. Various communication client applications may be installed on the terminal device, such as shopping applications, web browser applications, search applications, instant messaging tools, email clients, social platform software, etc. (only examples).

[0042] The terminal device 102 may be any electronic device having a display screen and supporting web browsing, including but not limited to a smart phone, a tablet computer, a laptop computer, a desktop computer, and the like.

[0043] The server 104 may be a server that provides various services, such as a background management server that provides support for websites browsed by users using terminal devices (only as an example). The background management server may analyze and process received data such as user requests, and feed back processing results (such as web pages, information, or data obtained or generated according to user requests) to the terminal device.

[0044] It should be noted that the method for evaluating the damage state of a carbon fiber component provided in the embodiment of the present disclosure can generally be executed by the vehicle 101 or the terminal device 102. Accordingly, the apparatus for evaluating the damage state of a carbon fiber component provided in the embodiment of the present disclosure can generally be set in the vehicle 101 or the terminal device 102.

[0045] Alternatively, the method for evaluating the damage state of a carbon fiber component provided in the embodiment of the present disclosure may also be generally performed by the server 104. Accordingly, the device for evaluating the damage state of a carbon fiber component provided in the embodiment of the present disclosure may also be generally disposed in the server 104. The method for evaluating the damage state of a carbon fiber component provided in the embodiment of the present disclosure may also be performed by a server or server cluster that is different from the server 104 and that can communicate with the vehicle 101, the terminal device 102 and / or the server 104. Accordingly, the device for evaluating the damage state of a carbon fiber component provided in the embodiment of the present disclosure may also be disposed in a server or server cluster that is different from the server 104 and that can communicate with the vehicle 101, the terminal device 102 and / or the server 104.

[0046] It should be understood that Figure 1 The number of vehicles, networks and servers in the embodiment is only for illustration. Any number of terminal devices, networks and servers may be provided as required.

[0047] Figure 2 A flow chart of a method for evaluating a damage state of a carbon fiber component according to an embodiment of the present disclosure is schematically shown.

[0048] like Figure 2 As shown, the method includes operations S210 to S220.

[0049] In operation S210, impact energy of the carbon fiber component in an impacted state is obtained.

[0050] In operation S220, a damage extension assessment result is determined based on a comparison result between the impact energy and the critical energy threshold.

[0051] According to an embodiment of the present disclosure, a carbon fiber component may represent a component made of carbon fiber material. The carbon fiber component may be installed at any position of the train as a component of the train. The carbon fiber component may be in an impact state when hit by an obstacle. However, it is not limited to this. The carbon fiber component of the train may be subjected to impact force to form an impact state when the train is traveling or stationary due to any factors such as acceleration, deceleration, boarding and alighting, and turning.

[0052] According to the embodiments of the present disclosure, the impact energy can be determined based on any detection data characterizing the impact state, such as deformation data of the carbon fiber component under impact, force detection data, etc. For example, the impact energy can be determined based on the product of the force detection data and the force duration. However, it is not limited to this, and the impact energy can also be determined based on other methods. The embodiments of the present disclosure do not limit the specific method of determining the impact energy, and those skilled in the art can choose according to actual needs.

[0053] According to an embodiment of the present disclosure, the damage state includes at least one of the following: a component surface damage size of the carbon fiber component; and a component damage depth of the carbon fiber component.

[0054] According to the embodiments of the present disclosure, the component surface damage size may represent the damage on the component surface such as the damage area and damage length of the carbon fiber component.

[0055] According to an embodiment of the present disclosure, the component damage depth may represent the depth of a damaged region of the carbon fiber component where damage exists.

[0056] It should be noted that the damage growth rate may include at least one of the size growth rate of the damage size on the component surface and the depth growth rate of the damage depth.

[0057] According to an embodiment of the present disclosure, the damage extension assessment result characterizes the damage extension rate of the damage state of the carbon fiber component. The damage state can be understood as the damage caused by the impact force to the carbon fiber component in the impact state. The damage may include fiber breakage, matrix cracks, and the like of the carbon fiber component. The damage extension assessment result can characterize the damage extension rate of the carbon fiber component with the damage state under the working condition of continuing to bear the load. For example, the damage extension assessment result can characterize the damage extension rate of the carbon fiber load-bearing component of the train during the continued driving process.

[0058] According to an embodiment of the present disclosure, the critical energy threshold is determined based on the following operations: simulating the impact state of a simulated component to obtain initial simulated damage states corresponding to multiple simulated impact energies; applying a simulated fatigue load to the simulated component with the initial simulated damage state to obtain a simulated damage extension detection result of the initial simulated state; and determining at least one critical energy threshold based on the simulated damage extension detection results corresponding to each of the multiple simulated impact energies.

[0059] According to an embodiment of the present disclosure, the critical energy threshold may include a simulated impact energy corresponding to a change in the damage growth rate among multiple simulated impact energies corresponding to the damage growth rate. The critical energy threshold may characterize the simulated impact energy that causes the change in the damage growth rate.

[0060] According to an embodiment of the present disclosure, the simulation component represents the carbon fiber component, for example, it may have the same or similar carbon fiber material parameters as the carbon fiber component, or have the same or similar structural parameters such as shape and size. Exemplarily, the simulation component may be represented based on a finite element model.

[0061] According to an embodiment of the present disclosure, simulating the impact state of the simulation component may include applying a simulated impact force to the simulation component to simulate the impact state of the simulation component under the simulated impact energy.

[0062] According to an embodiment of the present disclosure, the initial simulated damage state may represent simulated component damage generated by the simulated component under the same simulated impact energy conditions. The simulated component damage may be, for example, the component surface damage size, component damage depth, etc. of the simulated component.

[0063] According to an embodiment of the present disclosure, the simulated damage extension detection result can represent the damage extension rate of the initial simulated damage state based on the simulated fatigue load. The simulated damage extension detection result can simulate the damage extension rate of the initial damage state of the carbon fiber component under the same impact energy condition as the simulated impact energy.

[0064] According to an embodiment of the present disclosure, at least one critical energy threshold is determined based on the simulated damage expansion detection results corresponding to each of the multiple simulated impact energies. It can include determining one or more simulated impact energies that cause a significant change in the expansion speed based on the expansion speed of the initial simulated damage state characterized by the multiple simulated damage expansion detection results. One or more simulated impact energies that cause a significant change in the expansion speed are determined as the critical energy threshold. Alternatively, multiple simulated impact energies can also be processed based on a clustering algorithm to obtain adjacent edge simulated impact energies in different clustering clusters. The critical energy threshold is determined based on the average value of adjacent edge simulated impact energies in different clustering clusters. The embodiment of the present disclosure does not limit the specific method of determining the critical energy threshold, as long as the critical energy threshold can indicate a significant change in the damage expansion rate of the initial simulated damage state corresponding to each of the similar simulated impact energies.

[0065] It should be noted that a significant change in the damage growth rate can be understood as the difference between different damage growth rates being greater than a preset threshold, for example, the difference between two damage growth rates corresponding to two adjacent simulated impact energies being greater than a preset threshold.

[0066] It should be understood that a plurality of simulated impact energies correspond to a plurality of impact states, and a simulated component can obtain a plurality of initial simulated damage states in a plurality of different impact states.

[0067] According to an embodiment of the present disclosure, the damage state includes at least one of the following: a component surface damage size of the carbon fiber component; and a component damage depth of the carbon fiber component.

[0068] According to the embodiments of the present disclosure, the component surface damage size may represent the damage on the component surface such as the damage area and damage length of the carbon fiber component.

[0069] According to an embodiment of the present disclosure, the component damage depth may represent the depth of a damaged region of the carbon fiber component where damage exists.

[0070] It should be noted that the damage growth rate may include at least one of the size growth rate of the damage size on the component surface and the depth growth rate of the damage depth.

[0071] According to an embodiment of the present disclosure, a carbon fiber component is installed on a train. The carbon fiber component can be installed on a train as any component of the train.

[0072] In one example, the carbon fiber member can be installed outside the train body as an anti-collision side beam of the train.

[0073] In one example, the carbon fiber component can be installed on a train as a body support beam of the train.

[0074] According to an embodiment of the present disclosure, obtaining the impact energy of a carbon fiber component in an impact state includes: obtaining an impact sensing signal collected by a sensor installed on the carbon fiber component in an impact state; and determining the impact energy based on the impact sensing signal.

[0075] According to an embodiment of the present disclosure, the sensor may include a mechanical sensor for detecting impact force, or may also include other types of sensors such as a deformation detection sensor. The impact sensing signal may include any type of sensor sensing signal such as a stress sensing signal, a deformation sensing signal, etc., as long as it can characterize the impact state of the carbon fiber component.

[0076] According to the embodiments of the present disclosure, the impact energy is determined based on the impact sensing signal, which may include determining the impact energy based on the stress sensor signal and the duration of the impact force. However, the present disclosure is not limited thereto, and the impact energy may also be determined based on other methods, such as the deformation of the carbon fiber component represented by the deformation sensing signal. The embodiments of the present disclosure do not limit the specific method of determining the impact energy.

[0077] According to the embodiments of the present disclosure, the sensor can be installed at a position where the carbon fiber component is easily impacted, or can also be installed at a position where the carbon fiber component can withstand the main external force. The embodiments of the present disclosure do not limit the specific installation position of the sensor, as long as it is installed on the carbon fiber component.

[0078] In one example, multiple sensors may be installed on the same carbon fiber area in the carbon fiber component. The multiple sensors may be arranged on the carbon fiber component in any arrangement such as a cross or a matrix.

[0079] Figure 3 A schematic diagram of a carbon fiber component according to an embodiment of the present disclosure is schematically shown.

[0080] like Figure 3 As shown, the carbon fiber component 300 can be installed with four sensors 311, 312, 313 and 314. The four sensors 311, 312, 313 and 314 can detect the impact state of the impacted area Z310 to collect the impact sensing signal. Based on the method provided in the embodiment of the present disclosure, an impact sensing waveform can be determined based on the impact sensing signal, so as to determine the impact energy by determining a target preset sensing waveform whose similarity with the impact sensing waveform is higher than a preset similarity threshold. Furthermore, the damage extension assessment result can be determined by comparing the impact energy with the critical energy threshold.

[0081] According to an embodiment of the present disclosure, determining the impact energy based on the impact sensing signal may include: determining an impact sensing waveform based on the impact sensing signal; determining a target preset sensing waveform matching the impact sensing waveform from a preset sensing waveform library based on the similarity between the impact sensing waveform and the preset sensing waveform; and determining the simulated impact energy associated with the target preset sensing waveform as the impact energy.

[0082] According to an embodiment of the present disclosure, the impact sensing waveform diagram characterizes the component deformation of the carbon fiber component in an impacted state. The impact sensing waveform diagram can, for example, represent the component deformation value of the carbon fiber component at each moment in the impacted state. Alternatively, the sensor signal is a voltage signal, and the impact sensing waveform diagram can also be a voltage signal at each moment in the impacted state, so as to characterize the component deformation of the carbon fiber component at each moment in the impacted state through the voltage signal. As long as the impact sensing waveform diagram can characterize the component deformation of the carbon fiber component in the impacted state at each moment, the embodiment of the present disclosure does not limit the specific type of the impact sensing waveform diagram.

[0083] According to an embodiment of the present disclosure, a preset sensing waveform diagram in a preset sensing waveform diagram library may be associated with a simulation waveform diagram, and each simulation waveform diagram may be associated with a simulated impact energy. One or more simulation waveform diagrams may be constructed based on the simulated impact energy to enable the simulation waveform diagram to simulate the simulated impact energy.

[0084] According to an embodiment of the present disclosure, there is a mapping relationship between the preset sensing waveform diagram and the simulated impact energy. It should be noted that the simulated impact energy may have a mapping relationship with one or more preset sensing waveform diagrams.

[0085] According to an embodiment of the present disclosure, the mapping relationship between a preset sensing waveform and a simulated impact energy can be determined based on the following operations: determining a sample impact sensing waveform according to a sample impact sensing signal collected by a sensor installed on a sample carbon fiber component when the sample is in an impact state; simulating the sample impact state of a simulated sample component having the same component parameters as the sample carbon fiber component based on the preset simulated impact energy to obtain a simulated sample damage state; and in response to the simulated sample damage state, the sample impact sensing waveform is used as a preset impact sensing waveform, which is the same as the sample damage state generated by the sample carbon fiber component based on the sample impact state, to determine the mapping relationship between the simulated impact energy and the preset impact sensing waveform.

[0086] According to an embodiment of the present disclosure, the impact state of the sample is generated by applying a sample impact force to the sample carbon fiber component. The sample carbon fiber component can be based on component parameters that are the same or similar to those of the simulated sample component. The component parameters may include material strength parameters such as the tensile strength in the fiber direction and the compressive strength in the fiber direction of the carbon fiber component. However, it is not limited to this, and other types of component parameters may also be included, such as the tensile strength parameters in the perpendicular fiber direction of the carbon fiber material, the compressive strength parameters in the perpendicular fiber direction, and the interlayer bonding stiffness parameters of the carbon fiber component.

[0087] According to the embodiments of the present disclosure, the sample impact sensing signal and the sample impact sensing waveform diagram may have the same or similar properties as the impact sensing signal and the impact sensing waveform diagram, and the embodiments of the present disclosure are not repeated here. It should be understood that the sample impact state may be a state in which the sample carbon fiber structure is impacted based on the sample impact force corresponding to the sample impact energy, and the sample carbon fiber structure may generate a sample damage state based on the sample impact state. The sample impact state can be understood as being based on a physical impact test on the sample carbon fiber component.

[0088] According to an embodiment of the present disclosure, the preset simulated impact energy can be the same or similar to the sample impact energy, and the simulated sample component can have the same construction parameters as the sample carbon fiber construction. By performing impact simulation on the simulated sample component based on the preset simulated impact energy, the impact state of the simulated sample can be realized.

[0089] According to an embodiment of the present disclosure, the sample damage state may include the component surface damage size, component damage depth, etc. of the sample component. The simulated sample damage state may include the simulated component surface damage size, simulated component damage depth, etc. of the simulated sample component. When the sample damage state is the same as the simulated sample damage state, it can be indicated that the sample carbon fiber component and the simulated sample component are impacted under the same impact energy impact, then it can be determined that the sample impact sensing waveform and the simulated impact sensing waveform characterizing the simulated sample component simulated sample impact state are the same or similar, so that it can be determined that the sample impact sensing waveform can characterize the sample simulated impact energy of the simulated sample component. In this way, by determining the mapping relationship between the simulated impact energy and the preset impact sensing waveform, it is possible to represent the simulated impact energy by the preset impact waveform.

[0090] According to the embodiments of the present disclosure, sample impact sensing waveforms of multiple sample carbon fibers constructed under different sample impact forces can be determined to determine the mapping relationship between multiple different simulated impact energies and multiple sample impact sensing waveforms, so as to determine the target preset impact sensing waveform based on the similarity between the impact sensing waveform of the carbon fiber component under the impact state and the multiple sample impact sensing waveforms, and then determine the simulated impact energy associated with the target preset impact sensing waveform as the impact energy, thereby improving the detection accuracy of the impact energy and improving the assessment accuracy of the damage extension assessment results.

[0091] Figure 4 A schematic diagram of a sample carbon fiber member according to an embodiment of the present disclosure is schematically shown.

[0092] like Figure 4 As shown, the sample carbon fiber component 410 can be installed with four sample sensors 411, 412, 413 and 414. The sample impact state can be achieved by impacting the sample impact area Z410 of the sample carbon fiber component 410, so that the four sample sensors 411, 412, 413 and 414 can collect the sample impact sensing signal, and determine the sample impact sensing waveform diagram based on the sample impact sensing signal.

[0093] Figure 5 The flowchart for determining the mapping relationship between the preset induction waveform and the simulated impact energy according to an embodiment of the present disclosure is schematically shown.

[0094] like Figure 5 As shown, the mapping relationship between the preset sensing waveform and the simulated impact energy can be determined based on operations S501 to S509.

[0095] In operation S501 , component parameters of a sample carbon fiber component and a simulated sample component may be determined.

[0096] In operation S502, a standard sample carbon fiber component may be manufactured based on the component parameters, and sensors may be installed on the sample carbon fiber component, wherein the sensors may be arranged on the sample carbon fiber component in a matrix array.

[0097] In operation S503, a physical impact test may be performed to impact the sample carbon fiber component based on the sample impact force, so that the sample carbon fiber component is in a sample impacted state.

[0098] In operation S504, physical test data is obtained. The physical test data may include the sample initial damage state of the sample carbon fiber component, such as the construction surface damage length, component damage area, component damage depth, etc. The physical test data may also include a sample impact sensing waveform diagram determined based on the sample impact sensing signal.

[0099] In operation S505 , a finite element model may be constructed as a simulation sample component based on the component parameters.

[0100] In operation S506, a simulated impact test is performed. For example, an impact simulation can be performed on a simulated sample component based on a preset simulated impact energy. Impact damage calculation and failure mode analysis can be performed on the simulated component according to the impact force level of the physical test based on the loading boundary conditions of the finite element model.

[0101] In operation S507, simulation test data is obtained. The simulation test data may include a simulated initial damage state and a simulated waveform diagram obtained when the simulated sample component is subjected to impact simulation with a preset simulated impact energy.

[0102] In operation S507, it is determined whether the damage states are consistent. Whether the damage states of the sample carbon fiber component and the sample simulation component are consistent can be determined by comparing the simulation initial damage state with the sample initial damage state.

[0103] If the result of operation S507 is yes, operation S509 is performed to complete the impact energy calibration. For example, the sample impact sensing waveform diagram can be used as the preset impact sensing waveform diagram to establish a mapping relationship between the preset impact sensing waveform diagram and the simulated impact energy.

[0104] If the judgment result of operation S507 is no, operation S505 is looped to modify the component parameters of the simulation sample component to generate a new simulation sample component, and operations S506 to S507 are performed based on the new simulation sample component until the judgment result of operation S507 is yes.

[0105] According to the embodiments of the present disclosure, by determining the mapping relationship between multiple simulated impact energies and multiple preset impact sensing waveforms, it is possible to build a preset impact sensing waveform library. In this way, the preset impact sensing waveform library can be used to retrieve the target preset impact sensing waveform that is the same as or similar to the impact sensing waveform of the carbon fiber component, and the impact energy can be accurately determined by the simulated impact energy associated with the target preset impact sensing waveform, and then the damage extension assessment result can be determined based on the critical energy threshold, so as to achieve accurate and timely assessment of the health status of the carbon fiber component.

[0106] In one example, the simulation sample component and the impact state of the simulated sample can be edited based on the Hashin failure criterion. For a sample carbon fiber component made of multiple material mixed layers, corresponding component parameters can be involved for each material, and the simulation sample component layers corresponding to the multiple materials can be integrated to generate a simulation sample component.

[0107] According to an embodiment of the present disclosure, the simulated damage extension detection result includes a simulated damage extension rate.

[0108] According to an embodiment of the present disclosure, determining at least one critical energy threshold based on simulated damage extension detection results corresponding to each of a plurality of simulated impact energies may include: determining a damage extension slope between at least two simulated damage extension rates in a preset coordinate system constructed based on the simulated damage extension rate and the simulated impact energy; determining at least one target damage extension slope characterizing a change in slope from a plurality of damage extension slopes; and determining at least one critical energy threshold based on at least one simulated impact energy corresponding to the target damage extension slope.

[0109] According to an embodiment of the present disclosure, in a preset coordinate system constructed based on the simulated damage expansion rate and the simulated impact energy, the first coordinate axis can represent the simulated impact energy, and the second coordinate axis can represent the simulated damage expansion rate. For example, the first coordinate axis can be the X-axis, and the second coordinate axis can be the Y-axis. The damage expansion slope between at least two simulated damage expansion rates can represent the rate change trend of the simulated damage expansion rate with the increase of the simulated impact energy. The target damage expansion slope can indicate that the rate change trend of the simulated damage expansion rate has changed, so that it can be determined that at least one simulated impact energy corresponding to the target damage expansion slope can cause a large change in the simulated damage expansion rate. For example, the target damage expansion slope can indicate that the change amplitude of the simulated damage expansion rate has increased, so that it is determined that at least one simulated impact energy corresponding to the target damage expansion slope can significantly increase the simulated damage expansion rate. The critical energy threshold is determined based on at least one simulated impact energy corresponding to the target damage expansion slope. The critical energy threshold can be used to characterize the change in the damage expansion rate of the initial damage state of the carbon fiber component under the impact state corresponding to different impact energies, thereby more accurately evaluating the failure possibility and aging duration of the carbon fiber component that has been impacted under future load-bearing states, so as to accurately evaluate the health state of the carbon fiber component after receiving the impact.

[0110] According to an embodiment of the present disclosure, based on the comparison result between the impact energy and the critical energy threshold, determining the damage extension assessment result may include:

[0111] In response to a first comparison result that characterizes that the impact energy is less than or equal to a first critical energy threshold, a first evaluation result is determined; in response to a second comparison result that characterizes that the impact energy is greater than the first critical energy threshold and less than the second critical energy threshold, a second evaluation result is determined; and in response to a third comparison result that characterizes that the impact energy is greater than the second critical energy threshold, a third evaluation result is determined.

[0112] According to an embodiment of the present disclosure, the first evaluation result indicates that the damage state of the carbon fiber component will not expand. For example, it may indicate that the carbon fiber component can maintain the initial damage state such as the component surface damage size and component damage depth without being subjected to other impact forces.

[0113] According to an embodiment of the present disclosure, under the condition that a carbon fiber component with an initial damage state can withstand a rated load, the first evaluation result may indicate that the carbon fiber component does not need to be replaced immediately, thereby reducing the replacement frequency of the carbon fiber component and the time cost of replacing and repairing the carbon fiber component by accurately evaluating the damage extension evaluation result of the carbon fiber component.

[0114] According to an embodiment of the present disclosure, the first critical energy threshold is less than the second critical energy threshold. The second evaluation result characterizes that the damage growth rate of the damage state of the carbon fiber component is a first rate level. The first rate level may indicate that the damage growth rate of the initial damage state is slow, and the carbon fiber component may be replaced or repaired based on the actual load bearing requirements of the carbon fiber component.

[0115] According to an embodiment of the present disclosure, the third evaluation result indicates that the damage growth rate of the damage state of the carbon fiber component is at the second rate level, and the damage growth rate indicated by the first rate level is less than the damage growth rate indicated by the second rate level.

[0116] According to an embodiment of the present disclosure, the second rate level may indicate that the damage expansion rate of the initial damage state is relatively fast, and may prompt relevant operation and maintenance personnel to immediately repair or replace the carbon fiber component.

[0117] According to the embodiments of the present disclosure, by determining the damage extension assessment results as the first assessment result, the second assessment result and the third assessment result, the damage extension rate of the carbon fiber component in the damaged state caused by different impact forces can be characterized more accurately, so that the corresponding treatment plan or repair and replacement plan can be taken in time for the carbon fiber component impacted by the external force, so as to improve the health assessment accuracy of the carbon fiber component and improve the timeliness of maintenance.

[0118] Figure 6 A schematic diagram of a critical energy threshold according to an embodiment of the present disclosure is schematically shown.

[0119] like Figure 6 As shown, the horizontal axis of the coordinate system can represent the simulated impact energy, and the vertical axis can represent the simulated damage expansion rate. The first critical energy threshold and the second critical energy threshold , the simulated impact energy can be divided into three levels of evaluation results. For example, when the impact energy is less than or equal to the first critical energy threshold The first evaluation result can be determined by the first interval. The first evaluation result can be understood as that under normal working conditions, the damage state of the carbon fiber component will not expand. and is less than the second critical energy threshold The second evaluation result can be determined by the second interval. The second evaluation result can indicate that the damage state of the carbon fiber component after the impact state will show slow damage expansion. The third evaluation result can be determined by the third interval. The third evaluation result can be understood as the damage state of the carbon fiber component after the impact state will show rapid damage expansion.

[0120] It should be understood that Figure 6 The slope of the broken line shown in can be expressed as the damage extension slope, which is related to the first critical energy threshold and the second critical energy threshold The corresponding damage extension slope may be an inflection point of the damage extension slope, and the inflection point may be understood as a target damage extension slope.

[0121] Figure 7 A block diagram of a device for evaluating a damage state of a carbon fiber component according to an embodiment of the present disclosure is schematically shown.

[0122] like Figure 7 As shown, the device 700 for evaluating the damage state of a carbon fiber component includes an acquisition module 710 and an evaluation module 720 .

[0123] The acquisition module 710 is used to acquire the impact energy of the carbon fiber component in the impact state.

[0124] The evaluation module 720 is used to determine the damage extension evaluation result based on the comparison result between the impact energy and the critical energy threshold.

[0125] According to an embodiment of the present disclosure, a damage extension assessment result characterizes the damage extension rate of a damage state of a carbon fiber component, and a critical energy threshold is determined based on the following operations: simulating an impact state of a simulated component to obtain initial simulated damage states corresponding to multiple simulated impact energies, wherein the simulated component characterizes the carbon fiber component; applying a simulated fatigue load to a simulated component with an initial simulated damage state to obtain a simulated damage extension detection result of the initial simulated state; and determining at least one critical energy threshold based on the simulated damage extension detection results corresponding to multiple simulated impact energies.

[0126] According to an embodiment of the present disclosure, the simulated damage extension detection result includes a simulated damage extension rate.

[0127] According to an embodiment of the present disclosure, determining at least one critical energy threshold based on simulated damage extension detection results corresponding to each of a plurality of simulated impact energies includes: determining a damage extension slope between at least two simulated damage extension rates in a preset coordinate system constructed based on the simulated damage extension rate and the simulated impact energy; determining at least one target damage extension slope characterizing a change in slope from a plurality of damage extension slopes; and determining at least one critical energy threshold based on at least one simulated impact energy corresponding to the target damage extension slope.

[0128] According to an embodiment of the present disclosure, the evaluation module 720 includes: a first determination unit, a second determination unit, and a third determination unit.

[0129] The first determining unit is configured to determine a first evaluation result in response to a first comparison result indicating that the impact energy is less than or equal to a first critical energy threshold, wherein the first evaluation result indicates that the damage state of the carbon fiber component will not extend.

[0130] The second determination unit is used to determine a second evaluation result in response to a second comparison result that the comparison result is characterized that the impact energy is greater than the first critical energy threshold and less than the second critical energy threshold, the second evaluation result characterizing that the damage propagation rate of the damage state of the carbon fiber component is a first rate level, and the first critical energy threshold is less than the second critical energy threshold.

[0131] A third determination unit is used to determine a third evaluation result in response to a third comparison result that the comparison result is a third comparison result characterizing that the impact energy is greater than a second critical energy threshold, the third evaluation result characterizing that the damage propagation rate of the damage state of the carbon fiber component is a second rate level, and the damage propagation rate characterized by the first rate level is less than the damage propagation rate characterized by the second rate level.

[0132] According to an embodiment of the present disclosure, the acquisition module 710 includes: an acquisition unit and a fourth determination unit.

[0133] The acquisition unit is used to acquire the impact sensing signal collected by the sensor installed on the carbon fiber component in the impact state.

[0134] The fourth determining unit is configured to determine the impact energy based on the impact sensing signal.

[0135] According to an embodiment of the present disclosure, the fourth determining unit includes: a first determining subunit, a second determining subunit, and a third determining subunit.

[0136] The first determining subunit is used to determine an impact sensing waveform diagram based on the impact sensing signal, wherein the impact sensing waveform diagram represents the component deformation of the carbon fiber component under the impact state.

[0137] A second determining subunit is used to determine a target preset sensing waveform diagram that matches the impact sensing waveform diagram from a preset sensing waveform diagram library based on the similarity between the impact sensing waveform diagram and the preset sensing waveform diagram;

[0138] The third determining subunit is used to determine the simulated impact energy associated with the target preset sensing waveform as the impact energy.

[0139] According to an embodiment of the present disclosure, there is a mapping relationship between a preset sensing waveform and a simulated impact energy, and the mapping relationship is determined based on the following operations: determining a sample impact sensing waveform according to a sample impact sensing signal collected by a sensor installed on a sample carbon fiber component in a sample impact state, wherein the sample impact state is generated by applying a sample impact force to the sample carbon fiber component; simulating the sample impact state of a simulated sample component having the same component parameters as the sample carbon fiber component based on the preset simulated impact energy to obtain a simulated sample damage state; and in response to the simulated sample damage state, which is the same as the sample damage state generated by the sample carbon fiber component based on the sample impact state, using the sample impact sensing waveform as a preset impact sensing waveform to determine the mapping relationship between the simulated impact energy and the preset impact sensing waveform.

[0140] According to an embodiment of the present disclosure, the damage state includes at least one of the following: a component surface damage size of the carbon fiber component; and a component damage depth of the carbon fiber component.

[0141] According to an embodiment of the present disclosure, a carbon fiber component is installed on a train.

[0142] According to the embodiments of the present invention, any one or more of the modules, submodules, units, and subunits, or at least part of the functions of any one of them can be implemented in one module. According to the embodiments of the present invention, any one or more of the modules, submodules, units, and subunits can be split into multiple modules for implementation. According to the embodiments of the present invention, any one or more of the modules, submodules, units, and subunits can be at least partially implemented as hardware circuits, such as field programmable gate arrays (FPGAs), programmable logic arrays (PLAs), systems on chips, systems on substrates, systems on packages, application specific integrated circuits (ASICs), or can be implemented by hardware or firmware in any other reasonable way of integrating or packaging circuits, or can be implemented in any one of the three implementation methods of software, hardware, and firmware, or in any appropriate combination of any of them. Alternatively, according to the embodiments of the present invention, one or more of the modules, submodules, units, and subunits can be at least partially implemented as computer program modules, and when the computer program modules are run, the corresponding functions can be performed.

[0143] For example, any multiple of the acquisition module 710 and the evaluation module 720 can be combined in one module / unit / sub-unit for implementation, or any one of the modules / units / sub-units can be split into multiple modules / units / sub-units. Alternatively, at least part of the functions of one or more of these modules / units / sub-units can be combined with at least part of the functions of other modules / units / sub-units and implemented in one module / unit / sub-unit. According to an embodiment of the present disclosure, at least one of the acquisition module 710 and the evaluation module 720 can be at least partially implemented as a hardware circuit, such as a field programmable gate array (FPGA), a programmable logic array (PLA), a system on a chip, a system on a substrate, a system on a package, an application specific integrated circuit (ASIC), or can be implemented by hardware or firmware such as any other reasonable way of integrating or packaging the circuit, or implemented in any one of the three implementation methods of software, hardware and firmware or in any appropriate combination of any of them. Alternatively, at least one of the acquisition module 710 and the evaluation module 720 can be at least partially implemented as a computer program module, and when the computer program module is run, the corresponding function can be executed.

[0144] It should be noted that the device part for evaluating the damage state of a carbon fiber component in the embodiment of the present disclosure corresponds to the method part for evaluating the damage state of a carbon fiber component in the embodiment of the present disclosure. The description of the device part for evaluating the damage state of a carbon fiber component specifically refers to the method part for evaluating the damage state of a carbon fiber component, which will not be repeated here.

[0145] An embodiment of the present disclosure further provides a train, which includes: a carbon fiber component, a sensor, and a device for evaluating a damage state of the carbon fiber component according to an embodiment of the present disclosure.

[0146] Carbon fiber components are installed on the train body.

[0147] The sensor is installed on the carbon fiber component, and the sensor is configured to collect the impact sensing signal of the carbon fiber component when it is in an impact state.

[0148] According to an embodiment of the present disclosure, the device for evaluating the damage state of a carbon fiber component is configured to determine the impact energy based on the impact sensing signal, and determine the damage extension evaluation result of the carbon fiber component in the impacted state based on the impact energy.

[0149] It should be understood that the train body can be understood as the outer shell of the train.

[0150] In one example, a carbon fiber member is mounted on the front shell of a train.

[0151] Figure 8A block diagram of an electronic device suitable for implementing a method for evaluating a damage state of a carbon fiber component according to an embodiment of the present disclosure is schematically shown. Figure 8 The electronic device shown is only an example and should not bring any limitation to the functions and scope of use of the embodiments of the present disclosure.

[0152] like Figure 8 As shown, the electronic device 800 according to an embodiment of the present disclosure includes a processor 801, which can perform various appropriate actions and processes according to a program stored in a read-only memory (ROM) 802 or a program loaded from a storage part 808 to a random access memory (RAM) 803. The processor 801 may include, for example, a general-purpose microprocessor (e.g., a CPU), an instruction set processor and / or a related chipset and / or a dedicated microprocessor (e.g., an application-specific integrated circuit (ASIC)), etc. The processor 801 may also include an onboard memory for caching purposes. The processor 801 may include a single processing unit or multiple processing units for performing different actions of the method flow according to an embodiment of the present disclosure.

[0153] In RAM 803, various programs and data required for the operation of electronic device 800 are stored. Processor 801, ROM 802 and RAM 803 are connected to each other via bus 804. Processor 801 performs various operations of the method flow according to the embodiment of the present disclosure by executing the program in ROM 802 and / or RAM 803. It should be noted that the program can also be stored in one or more memories other than ROM 802 and RAM 803. Processor 801 can also perform various operations of the method flow according to the embodiment of the present disclosure by executing the program stored in the one or more memories.

[0154] According to an embodiment of the present disclosure, the electronic device 800 may further include an input / output (I / O) interface 805, which is also connected to the bus 804. The electronic device 800 may further include one or more of the following components connected to the input / output (I / O) interface 805: an input portion 806 including a keyboard, a mouse, etc.; an output portion 807 including a cathode ray tube (CRT), a liquid crystal display (LCD), etc., and a speaker, etc.; a storage portion 808 including a hard disk, etc.; and a communication portion 809 including a network interface card such as a LAN card, a modem, etc. The communication portion 809 performs communication processing via a network such as the Internet. A drive 810 is also connected to the input / output (I / O) interface 805 as needed. A removable medium 811, such as a magnetic disk, an optical disk, a magneto-optical disk, a semiconductor memory, etc., is installed on the drive 810 as needed, so that the computer program read therefrom is installed into the storage portion 808 as needed.

[0155] According to an embodiment of the present disclosure, the method flow according to an embodiment of the present disclosure can be implemented as a computer software program. For example, an embodiment of the present disclosure includes a computer program product, which includes a computer program carried on a computer-readable storage medium, and the computer program contains a program code for executing the method shown in the flowchart. In such an embodiment, the computer program can be downloaded and installed from the network through the communication part 809, and / or installed from the removable medium 811. When the computer program is executed by the processor 801, the above-mentioned functions defined in the system of the embodiment of the present disclosure are executed. According to an embodiment of the present disclosure, the system, equipment, device, module, unit, etc. described above can be implemented by a computer program module.

[0156] The present disclosure also provides a computer-readable storage medium, which may be included in the device / apparatus / system described in the above embodiments; or may exist independently without being assembled into the device / apparatus / system. The above computer-readable storage medium carries one or more programs, and when the above one or more programs are executed, the method according to the embodiment of the present disclosure is implemented.

[0157] According to an embodiment of the present disclosure, the computer-readable storage medium may be a non-volatile computer-readable storage medium. For example, it may include, but is not limited to: a portable computer disk, a hard disk, a random access memory (RAM), a read-only memory (ROM), an erasable programmable read-only memory (EPROM or flash memory), a portable compact disk read-only memory (CD-ROM), an optical storage device, a magnetic storage device, or any suitable combination thereof. In the present disclosure, a computer-readable storage medium may be any tangible medium containing or storing a program that may be used by or in combination with an instruction execution system, apparatus, or device.

[0158] For example, according to an embodiment of the present disclosure, the computer-readable storage medium may include the ROM 802 and / or the RAM 803 described above and / or one or more memories other than the ROM 802 and the RAM 803 .

[0159] An embodiment of the present disclosure also includes a computer program product, which includes a computer program, and the computer program contains a program code for executing the method provided by the embodiment of the present disclosure. When the computer program product is run on an electronic device, the program code is used to enable the electronic device to implement the method for evaluating the damage state of a carbon fiber component provided by the embodiment of the present disclosure.

[0160] When the computer program is executed by the processor 801, the above functions defined in the system / device of the embodiment of the present disclosure are executed. According to the embodiment of the present disclosure, the system, device, module, unit, etc. described above can be implemented by a computer program module.

[0161] In one embodiment, the computer program may rely on tangible storage media such as optical storage devices, magnetic storage devices, etc. In another embodiment, the computer program may also be transmitted and distributed in the form of signals on a network medium, and downloaded and installed through the communication part 809, and / or installed from a removable medium 811. The program code contained in the computer program may be transmitted using any appropriate network medium, including but not limited to: wireless, wired, etc., or any suitable combination of the above.

[0162] According to an embodiment of the present disclosure, the program code for executing the computer program provided by the embodiment of the present disclosure can be written in any combination of one or more programming languages. Specifically, these computing programs can be implemented using high-level process and / or object-oriented programming languages, and / or assembly / machine languages. Programming languages ​​include, but are not limited to, Java, C++, python, "C" language or similar programming languages. The program code can be executed entirely on the user computing device, partially on the user device, partially on the remote computing device, or entirely on the remote computing device or server. In the case of a remote computing device, the remote computing device can be connected to the user computing device through any type of network, including a local area network (LAN) or a wide area network (WAN), or can be connected to an external computing device (for example, using an Internet service provider to connect through the Internet).

[0163] The flowcharts and block diagrams in the accompanying drawings illustrate the possible implementation architecture, functions and operations of the systems, methods and computer program products according to various embodiments of the present disclosure. In this regard, each box in the flowchart or block diagram may represent a module, a program segment, or a part of a code, and the above-mentioned module, program segment, or a part of the code contains one or more executable instructions for implementing the specified logical function. It should also be noted that in some alternative implementations, the functions marked in the box may also occur in an order different from that marked in the accompanying drawings. For example, two boxes represented in succession can actually be executed substantially in parallel, and they can sometimes be executed in the opposite order, depending on the functions involved. It should also be noted that each box in the block diagram or flowchart, and the combination of boxes in the block diagram or flowchart, can be implemented with a dedicated hardware-based system that performs a specified function or operation, or can be implemented with a combination of dedicated hardware and computer instructions. It can be understood by those skilled in the art that the features recorded in the various embodiments of the present disclosure can be combined and / or combined in a variety of ways, even if such a combination or combination is not explicitly recorded in the present disclosure. In particular, without departing from the spirit and teaching of the present disclosure, the features described in the various embodiments of the present disclosure may be combined and / or combined in a variety of ways. All of these combinations and / or combinations fall within the scope of the present disclosure.

[0164] The embodiments of the present disclosure are described above. However, these embodiments are only for illustrative purposes and are not intended to limit the scope of the present disclosure. Although the embodiments are described above, this does not mean that the measures in the various embodiments cannot be used in combination to advantage. Without departing from the scope of the present disclosure, those skilled in the art may make a variety of substitutions and modifications, which should all fall within the scope of the present disclosure.

Claims

1. A method for evaluating the damage state of a carbon fiber component, comprising: Obtaining the impact energy of the carbon fiber component in the impact state; Based on the comparison result between the impact energy and the critical energy threshold, a damage extension assessment result is determined, wherein the damage extension assessment result represents a damage extension rate of the damage state of the carbon fiber component, and the critical energy threshold is determined based on the following operations: Simulating the impact state of the simulation component to obtain initial simulation damage states corresponding to a plurality of simulation impact energies, wherein the simulation component represents the carbon fiber component; Applying a simulated fatigue load to the simulated component having the initial simulated damage state to obtain a simulated damage extension detection result of the initial simulated state; and At least one of the critical energy thresholds is determined based on the simulated damage extension detection results corresponding to each of the plurality of simulated impact energies.

2. The method according to claim 1, wherein: The simulated damage extension detection result includes a simulated damage extension rate; Wherein, determining at least one of the critical energy thresholds based on the simulated damage extension detection results corresponding to each of the plurality of simulated impact energies comprises: Determining a damage growth slope between at least two simulated damage growth rates in a preset coordinate system constructed based on the simulated damage growth rate and the simulated impact energy; Determining at least one target damage propagation slope representing a change in slope from the plurality of damage propagation slopes; and At least one of the critical energy thresholds is determined based on at least one simulated impact energy corresponding to the target damage propagation slope.

3. The method according to claim 1 or 2, wherein: The determining of the damage extension assessment result based on the comparison result between the impact energy and the critical energy threshold comprises: In response to the comparison result being a first comparison result indicating that the impact energy is less than or equal to a first critical energy threshold, determining a first evaluation result indicating that the damage state of the carbon fiber component will not extend; In response to the comparison result being a second comparison result indicating that the impact energy is greater than the first critical energy threshold and less than a second critical energy threshold, determining a second evaluation result, wherein the second evaluation result indicates that the damage propagation rate of the damage state of the carbon fiber component is a first rate level, and the first critical energy threshold is less than the second critical energy threshold; In response to the third comparison result that the comparison result is characterizing that the impact energy is greater than the second critical energy threshold, a third evaluation result is determined, and the third evaluation result characterizes that the damage propagation rate of the damage state of the carbon fiber component is a second rate level, and the damage propagation rate characterized by the first rate level is less than the damage propagation rate characterized by the second rate level.

4. The method according to claim 1, wherein: The step of obtaining the impact energy of the carbon fiber component in an impacted state comprises: Acquire an impact sensing signal collected by a sensor installed on the carbon fiber component in the impacted state; The impact energy is determined based on the impact sensing signal.

5. The method according to claim 4, wherein: Determining the impact energy based on the impact sensing signal comprises: Determine an impact sensing waveform diagram based on the impact sensing signal, wherein the impact sensing waveform diagram represents the component deformation of the carbon fiber component in the impacted state; Based on the similarity between the impact sensing waveform and the preset sensing waveform, determining a target preset sensing waveform matching the impact sensing waveform from a preset sensing waveform library; The simulated impact energy associated with the target preset sensing waveform is determined as the impact energy.

6. The method according to claim 5, wherein: There is a mapping relationship between the preset sensing waveform and the simulated impact energy, and the mapping relationship is determined based on the following operations: Determine a sample impact sensing waveform diagram according to a sample impact sensing signal collected by a sensor installed on the sample carbon fiber component when the sample is in an impact state, wherein the sample impact state is generated by applying a sample impact force to the sample carbon fiber component; Based on a preset simulated impact energy, simulating the impact state of the sample on a simulated sample component having the same component parameters as the sample carbon fiber component, to obtain a simulated sample damage state; and In response to the simulated sample damage state, which is the same as the sample damage state generated by the sample carbon fiber component based on the impact state of the sample, the sample impact sensing waveform diagram is used as the preset impact sensing waveform diagram to determine the mapping relationship between the simulated impact energy and the preset impact sensing waveform diagram.

7. The method according to claim 1, wherein: The damage status includes at least one of the following: The surface damage size of the carbon fiber component; A component damage depth of the carbon fiber component.

8. The method according to claim 1, wherein: The carbon fiber component is installed on a train.

9. A device for evaluating the damage state of a carbon fiber component, comprising: An acquisition module, used for acquiring the impact energy of the carbon fiber component in an impacted state; An evaluation module is used to determine a damage extension evaluation result based on a comparison result between the impact energy and a critical energy threshold, wherein the damage extension evaluation result represents a damage extension rate of a damage state of the carbon fiber component, and the critical energy threshold is determined based on the following operations: Simulating the impact state of the simulation component to obtain initial simulation damage states corresponding to a plurality of simulation impact energies, wherein the simulation component represents the carbon fiber component; Applying a simulated fatigue load to the simulated component having the initial simulated damage state to obtain a simulated damage extension detection result of the initial simulated state; and At least one of the critical energy thresholds is determined based on the simulated damage extension detection results corresponding to each of the plurality of simulated impact energies.

10. A train comprising: Carbon fiber components, installed on the train body; A sensor is mounted on the carbon fiber component, and the sensor is configured to collect an impact sensing signal of the carbon fiber component when it is impacted; The device of claim 9, configured to determine the impact energy based on the impact sensing signal, and determine the damage extension assessment result of the carbon fiber component in the impacted state based on the impact energy.

11. An electronic device, comprising: one or more processors; a memory for storing one or more programs, When the one or more programs are executed by the one or more processors, the one or more processors implement the method according to any one of claims 1 to 8.

12. A computer-readable storage medium having executable instructions stored thereon, which, when executed by a processor, enables the processor to implement the method according to any one of claims 1 to 8.

13. A computer program product comprising a computer program, which, when executed by a processor, implements the method according to any one of claims 1 to 8.

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