Method and apparatus for detecting defects in crimped locations of carbon fiber cable with enhanced contrast

Abstract

The application relates to a contrast-enhanced carbon fiber cable crimping site defect detection method, device and equipment, the method comprising the following steps: acquiring a cable with a crimping site, taking the exposed carbon fiber core of the crimping site in the cable as a detection area; winding a high-density composite on the detection area to obtain a cable to be crimped; sleeving an aluminum lining pipe on the cable to be crimped and crimping the cable to be crimped by using a crimping device to obtain a cable to be detected; detecting the crimping site of the cable to be detected by using an X-ray detection device to obtain a detection image; and identifying defects of the carbon fiber core in the cable according to the detection image. The contrast-enhanced carbon fiber cable crimping site defect detection method coats the detection area on the surface of the carbon fiber core with the high-density composite, physically enhances the contrast of the detection image obtained after X-ray detection of the carbon fiber core in the cable crimping site, and facilitates identification of the state and type of the crimping defects according to the detection image.

Description

Technical Field

[0001] This application relates to the field of carbon fiber cable testing technology, and in particular to a method, apparatus and equipment for detecting defects in the crimped parts of carbon fiber cables with enhanced contrast. Background Technology

[0002] Carbon fiber cores can replace traditional steel-cored aluminum stranded wires, increasing the transmission capacity of overhead power lines. They offer advantages such as light weight, high strength, high temperature resistance, and large transmission capacity, making them a promising new type of conductor. To ensure the widespread application of carbon fiber core conductors, necessary defect detection methods must be employed, especially at the crimping points of the carbon fiber core. These crimping points are subjected to significant pressure and are the weakest points in the entire cable line. Because the carbon fiber core is encased in an aluminum layer, and there are hardware fittings attached to the crimping points, traditional visual inspection and penetrant testing methods are difficult to apply to these areas.

[0003] X-ray inspection is an effective non-destructive testing technique that can detect internal defects in carbon fiber cores and obtain images of these defects for subsequent defect type identification. X-rays can be used to detect damage to carbon fiber cores in non-crimped sections; however, in crimped sections, the larger radius of the crimped area makes it difficult for portable X-ray instruments to penetrate, resulting in insufficient image contrast and hindering subsequent defect diagnosis. Summary of the Invention

[0004] This application provides a method, apparatus, and device for detecting defects in the crimped portion of carbon fiber cables with enhanced contrast. It addresses the technical problem that existing methods for detecting cables with crimped portions using X-rays suffer from insufficient image contrast due to the difficulty of X-ray penetration, making it impossible to diagnose defects based on the images.

[0005] To achieve the above objectives, the embodiments of this application provide the following technical solutions:

[0006] On the one hand, a method for detecting defects in the crimped joints of carbon fiber cables with enhanced contrast is provided, including the following steps:

[0007] Obtain cables with crimped sections and expose the carbon fiber core of the crimped section as the inspection area;

[0008] A high-density composite material is wound around the detection area to obtain the cable to be crimped;

[0009] An aluminum liner is fitted onto the cable to be crimped and crimped using a crimping device to obtain the cable to be tested.

[0010] The crimped portion of the cable under test is inspected using X-ray inspection equipment to obtain an inspection image; defects in the carbon fiber core of the cable are identified based on the inspection image.

[0011] Preferably, the method for detecting defects at the crimped joint of the carbon fiber cable with enhanced contrast includes: fabricating a high-density composite, the steps of fabricating the high-density composite including:

[0012] Obtain a metal thin film that matches the specifications of the detection area;

[0013] One side of the metal film is used as the winding side, and a high-density iodine solution adhesive is uniformly applied to the winding side to obtain a high-density composite.

[0014] The high-density iodine solution adhesive is formed by mixing iodine solution and solvent adhesive to form a gel or semi-fluid state with a concentration greater than 500 mg / ml; the thickness of the high-density composite is less than 0.1 mm, and the density of the high-density iodine solution adhesive is greater than the density of the high-density composite.

[0015] Preferably, a high-density composite material is wound around the detection area to obtain the cable to be crimped, comprising:

[0016] Obtain parameter data of the cable and thickness data of the high-density composite, wherein the parameter data includes the inner diameter of the aluminum liner in the cable and the outer diameter of the carbon fiber core in the cable;

[0017] The number of winding layers is calculated based on the parameter data and thickness data.

[0018] The high-density composite is tightly wound around the detection area according to the number of winding layers to obtain the cable to be crimped.

[0019] Preferably, calculating the number of winding layers based on the parameter data and thickness data includes: calculating the number of winding layers using a layer calculation formula based on the parameter data and thickness data, wherein the layer calculation formula is:

[0020]

[0021]

[0022] In the formula, L is the number of winding layers, R1 is the inner diameter of the aluminum liner in the cable, R2 is the outer diameter of the carbon fiber core in the cable, and D is the thickness data of the high-density composite.

[0023] Preferably, the defects in the carbon fiber core of the detected image recognition cable include:

[0024] Based on the detection image showing that only high-density composite glue penetration exists in the carbon fiber core, a small defect is identified in the carbon fiber core at the crimping part of the cable.

[0025] Based on the detection image showing glue penetration into the high-density composite and a depression in the metal film of the high-density composite, a major defect is identified in the carbon fiber core at the crimping point of the cable.

[0026] On the other hand, a device for detecting defects in the crimped joints of carbon fiber cables with enhanced contrast is provided. The device comprises a detection platform and a data processing device connected to the detection platform. An X-ray emitter and an X-ray image receiver are disposed on the detection platform. A cable to be inspected, manufactured using the aforementioned method for detecting defects in the crimped joints of carbon fiber cables with enhanced contrast, is accommodated between the X-ray emitter and the X-ray image receiver. The data processing device receives the inspection image transmitted by the X-ray image receiver and processes the inspection image using the aforementioned method for detecting defects in the crimped joints of carbon fiber cables with enhanced contrast.

[0027] On the other hand, a defect detection device for the crimping part of carbon fiber cable with enhanced contrast is provided, including a detection area making module, a winding module, a crimping module and a detection and identification module;

[0028] The detection area fabrication module is used to obtain cables with crimped parts and expose the carbon fiber core of the crimped part in the cable as the detection area.

[0029] The winding module is used to wind a high-density composite material around the detection area to obtain the cable to be crimped.

[0030] The crimping module is used to fit the aluminum liner tube onto the cable to be crimped and crimp it using a crimping device to obtain the cable to be tested;

[0031] The detection and identification module is used to use X-ray detection equipment to detect the crimped part of the cable to be tested and obtain a detection image; and to identify defects in the carbon fiber core of the cable based on the detection image.

[0032] The winding module is also used to fabricate high-density composites, and the steps for fabricating high-density composites include:

[0033] Obtain a metal thin film that matches the specifications of the detection area;

[0034] One side of the metal film is used as the winding side, and a high-density iodine solution adhesive is uniformly applied to the winding side to obtain a high-density composite.

[0035] The high-density iodine solution adhesive is formed by mixing iodine solution and solvent adhesive to form a gel or semi-fluid state with a concentration greater than 500 mg / ml; the thickness of the high-density composite is less than 0.1 mm, and the density of the high-density iodine solution adhesive is greater than the density of the high-density composite.

[0036] Preferably, the winding module is further configured to acquire parameter data of the cable and thickness data of the high-density composite, wherein the parameter data includes the inner diameter of the aluminum liner in the cable and the outer diameter of the carbon fiber core in the cable; the number of winding layers is calculated using a layer calculation formula based on the parameter data and thickness data; the winding side of the high-density composite is tightly wound around the detection area according to the number of winding layers to obtain the cable to be crimped; the layer calculation formula is:

[0037]

[0038]

[0039] In the formula, L is the number of winding layers, R1 is the inner diameter of the aluminum liner in the cable, R2 is the outer diameter of the carbon fiber core in the cable, and D is the thickness data of the high-density composite.

[0040] Preferably, the detection and identification module is further configured to identify a small defect in the carbon fiber core at the crimping part of the cable if the carbon fiber core in the detection image shows only glue penetration into the high-density composite; and to identify a large defect in the carbon fiber core at the crimping part of the cable if the carbon fiber core in the detection image shows glue penetration into the high-density composite and the metal film of the high-density composite is concave.

[0041] On the other hand, a terminal device is provided, including a processor and a memory;

[0042] The memory is used to store program code and transmit the program code to the processor;

[0043] The processor is used to execute the above-described method for detecting defects in the crimped joints of carbon fiber cables with enhanced contrast, according to the instructions in the program code.

[0044] As can be seen from the above technical solutions, the embodiments of this application have the following advantages: The method, apparatus, and equipment for detecting defects in the crimped portion of carbon fiber cables with enhanced contrast include: acquiring a cable with a crimped portion; exposing the carbon fiber core of the crimped portion of the cable as the detection area; wrapping a high-density composite material around the detection area to obtain a cable to be crimped; fitting an aluminum liner to the cable to be crimped and crimping it using a crimping device to obtain a cable to be inspected; using an X-ray inspection device to inspect the crimped portion of the cable to be inspected to obtain an inspection image; and identifying defects in the carbon fiber core of the cable based on the inspection image. This method for detecting defects in the crimped portion of carbon fiber cables with enhanced contrast, by covering the detection area on the surface of the carbon fiber core with a high-density composite material, physically enhances the contrast of the inspection image obtained after X-ray inspection of the carbon fiber core in the crimped portion of the cable. This facilitates the identification of the state and type of crimping defects based on the inspection image, solving the technical problem that existing methods for inspecting cables with crimped portions using X-rays suffer from insufficient image contrast due to the difficulty of X-ray penetration, making defect diagnosis impossible. Attached Figure Description

[0045] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0046] Figure 1 This is a flowchart illustrating the steps of the method for detecting defects in the crimped portion of carbon fiber cables to enhance contrast, as described in an embodiment of this application.

[0047] Figure 2 This is a schematic diagram of the cable to be crimped in the method for detecting defects in the crimped portion of carbon fiber cables with enhanced contrast described in the embodiments of this application.

[0048] Figure 3 This is a schematic diagram illustrating defect identification in the contrast-enhancing carbon fiber cable crimping defect detection method described in this application embodiment.

[0049] Figure 4 This is a schematic diagram of the structure of the carbon fiber cable crimping defect detection device with enhanced contrast described in the embodiments of this application;

[0050] Figure 5 This is a frame diagram of a carbon fiber cable crimping defect detection device with enhanced contrast according to an embodiment of this application. Detailed Implementation

[0051] To make the inventive objectives, features, and advantages of this application more apparent and understandable, the technical solutions in the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the embodiments described below are only some embodiments of this application, and not all embodiments. Based on the embodiments in this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0052] In the description of the embodiments of this application, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the embodiments of this application, "multiple" means two or more, unless otherwise explicitly specified.

[0053] In the embodiments of this application, unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. For those skilled in the art, the specific meaning of the above terms in the embodiments of this application can be understood according to the specific circumstances.

[0054] This application provides a method, apparatus, and device for detecting defects in the crimped portion of carbon fiber cables with enhanced contrast. It solves the technical problem that existing methods for detecting cables with crimped portions using X-rays suffer from insufficient image contrast due to the difficulty of X-ray instruments penetrating the surface, making it impossible to diagnose defects based on the images.

[0055] Example 1:

[0056] Figure 1 This is a flowchart illustrating the steps of the method for detecting defects in the crimped portion of carbon fiber cables to enhance contrast, as described in an embodiment of this application. Figure 2 This is a schematic diagram of the cable to be crimped in the method for detecting defects in the crimped portion of carbon fiber cables with enhanced contrast, as described in the embodiments of this application.

[0057] like Figure 1 As shown in the figure, this application provides a method for detecting defects in the crimping parts of carbon fiber cables with enhanced contrast, including the following steps:

[0058] S1. Obtain a cable with a crimped portion, and use the exposed carbon fiber core of the crimped portion of the cable as the inspection area.

[0059] It should be noted that in step S1, the cable with the crimped part to be tested is processed by peeling off the aluminum wire on the surface of the carbon fiber core of the cable to expose the carbon fiber core of the crimped part, and the exposed carbon fiber core is used as the testing area.

[0060] S2. A high-density composite material is wound around the detection area to obtain the cable to be crimped.

[0061] It should be noted that in step S2, a high-density composite material is wound around the detection area of ​​step S1 to obtain the cable to be crimped, which facilitates subsequent defect detection at the cable crimping site. The high-density composite material covering the carbon fiber core surface of the cable crimping site enhances the contrast of the image generated after X-ray inspection of the carbon fiber core crimping site, allowing users to easily determine the state and type of crimping defects based on the image. In this embodiment, as... Figure 2 As shown, when winding the high-density composite in the testing area, it is necessary to rotate the winding to ensure uniform and consistent material coverage on the surface of the carbon fiber core. It is also essential to ensure that the high-density composite completely and tightly covers the testing area, with no gaps between the high-density composite and the testing area. Figure 2 As shown. 301 is the carbon fiber core segment that needs to be crimped, and 302 is the high-density composite material that is rotated and wound around the carbon fiber core segment. During winding, it is necessary to ensure that there are no gaps at each adjacent junction and that there are no overlapping parts to ensure the testing effect.

[0062] In this embodiment of the application, the method for detecting defects at the crimped portion of the carbon fiber cable with enhanced contrast includes: fabricating a high-density composite, the steps of fabricating the high-density composite including:

[0063] Obtain a metal thin film that matches the specifications of the detection area;

[0064] One side of the metal film is used as the winding side, and a high-density iodine solution adhesive is evenly applied to the winding side to obtain a high-density composite.

[0065] Among them, the high-density iodine solution glue is formed by mixing iodine solution and solvent glue to form a gel or semi-fluid state with a concentration greater than 500 mg / ml; the thickness of the high-density composite is less than 0.1 mm, and the density of the high-density iodine solution glue is greater than the density of the high-density composite.

[0066] It should be noted that the metal film can be a high-density metal film material. The high-density iodine solution adhesive is a mixture of a high-density iodine solution and a solvent adhesive. The iodine solution contains iodine and its compound groups, preferably at a concentration of 500 mg / ml or higher, and the solvent adhesive should be able to dissolve iodine and its compound groups. The density of the high-density composite should be greater than the density of the aluminum liner material outside the carbon fiber core of the cable. The high-density composite is a flexible, cuttable lead foil film. The formed high-density composite consists of a layer of high-density metal film and a high-density iodine solution adhesive uniformly coated on one side of the metal film surface. In this embodiment, the high-density iodine solution adhesive is gel-like or semi-fluid, which can fill the gaps on the surface of the carbon fiber core well, helping to detect small features of defects, such as burrs, defects, and short strands. The high-density metal film plays a fixing role, and at the same time, the high-density metal film has better imaging effect, which helps to detect larger defects, such as splitting, fracture, and large deformation. This enhanced-contrast method for detecting defects in carbon fiber cable crimped joints enhances the contrast of X-ray images of defects in the tension clamp section of the carbon fiber conductor by wrapping a high-density composite material around the inspection area. If only high-density iodine solution adhesive is applied to the inspection area, the adhesive layer will be very thin after crimping, resulting in poor imaging. Furthermore, large defects require a large amount of high-density iodine solution adhesive, and the aluminum liner cannot be properly fitted onto the surface after the coating layer is applied. If only a high-density metal film is used, it is difficult to detect the detailed features of the defect, as the flexibility and plasticity of the metal film are far inferior to that of high-density iodine solution adhesive, leading to missed detections.

[0067] In this embodiment, a high-density metal film is cut to match the length and radius of the carbon fiber core crimped section in the detection area.

[0068] S3. Fit the aluminum liner tube onto the cable to be crimped and crimp it using a crimping device to obtain the cable to be tested.

[0069] It should be noted that in step S3, the cable to be crimped obtained in step S2 is crimped with an aluminum liner using a crimping device to form the cable to be tested. Existing, relatively mature crimping machines can be selected as the crimping device.

[0070] S4. Use X-ray inspection equipment to inspect the crimped parts of the cable to be inspected and obtain inspection images; identify defects in the carbon fiber core of the cable based on the inspection images.

[0071] It should be noted that in step S4, the cable to be inspected obtained in step S3 is first inspected using an X-ray inspection device to obtain an inspection image; secondly, defects in the carbon fiber core in the inspection area of ​​the inspection image are identified. Specifically, this method for detecting defects in the crimped portion of the carbon fiber cable using enhanced contrast involves inspecting the crimped portion of the cable for defects using an X-ray inspection device. Since the density of the high-density composite material made of high-density iodine solution glue and high-density metal film is very high, far exceeding that of the aluminum liner, defects in the carbon fiber core in the crimped portion of the cable can be indirectly measured by observing the projection state of the high-density composite material in the cable to be inspected, which is wrapped with the high-density composite material.

[0072] This application provides a method for detecting defects in the crimped portion of carbon fiber cables with enhanced contrast. The method includes acquiring a cable with a crimped portion, exposing the carbon fiber core of the crimped portion as the detection area; wrapping a high-density composite material around the detection area to obtain a cable to be crimped; fitting an aluminum liner to the cable to be crimped and crimping it using a crimping device to obtain a cable to be inspected; using an X-ray inspection device to inspect the crimped portion of the cable to obtain an inspection image; and identifying defects in the carbon fiber core of the cable based on the inspection image. This method for detecting defects in the crimped portion of carbon fiber cables with enhanced contrast physically enhances the contrast of the inspection image obtained after X-ray inspection of the carbon fiber core in the crimped portion by coating the detection area on the surface of the carbon fiber core with a high-density composite material. This facilitates the identification of the state and type of crimping defects based on the inspection image, solving the technical problem of insufficient image contrast and inability to diagnose defects based on existing X-ray inspections of cables with crimped portions due to the difficulty of X-ray penetration.

[0073] In one embodiment of this application, a high-density composite material is wound around the detection area to obtain the cable to be crimped, comprising:

[0074] Obtain parameter data for the cable and thickness data for the high-density composite. The parameter data includes the inner diameter of the aluminum liner in the cable and the outer diameter of the carbon fiber core in the cable.

[0075] The number of winding layers is calculated based on the parameter data and thickness data;

[0076] According to the number of winding layers, the winding side of the high-density composite is tightly wound onto the detection area to obtain the cable to be crimped;

[0077] The number of winding layers is calculated using the layer calculation formula based on the parameter data and thickness data. The layer calculation formula is as follows:

[0078]

[0079]

[0080] In the formula, L is the number of winding layers, R1 is the inner diameter of the aluminum liner in the cable, R2 is the outer diameter of the carbon fiber core in the cable, and D is the thickness data of the high-density composite.

[0081] It should be noted that, to ensure a more obvious detection effect of the defect detection method for the crimped parts of the carbon fiber cable with enhanced contrast, the number of winding layers should be higher than two. However, the number of layers should not be too high, as an excessive number of layers will result in a large thickness of the high-density composite, reducing its ability to reflect the defect state. The specific layer requirement is related to the cable parameters and the thickness of the high-density composite. The preferred number of layers should not exceed the number of winding layers calculated using the layer calculation formula.

[0082] Figure 3 This is a schematic diagram illustrating defect identification in the contrast-enhancing carbon fiber cable crimping defect detection method described in this application embodiment.

[0083] In one embodiment of this application, detecting defects in the carbon fiber core of the image recognition cable includes:

[0084] Based on the detection image showing that only the high-density composite adhesive has penetrated the carbon fiber core, a small defect has been identified in the carbon fiber core at the crimping part of the cable.

[0085] Based on the detection image showing glue penetration into the high-density composite and the depression of the metal film in the high-density composite, a major defect in the carbon fiber core at the crimping point of the cable is identified.

[0086] It should be noted that, as Figure 3 As shown, for small defects in the carbon fiber core 301 of the cable, the high-density iodine solution adhesive 202 in the high-density composite can fill the defect; for large defects in the carbon fiber core 301 of the cable, the metal film 201 in the high-density composite can create corresponding depressions. The defect state of the carbon fiber core can be determined based on the projection of the high-density composite after X-ray imaging. This high-density composite effectively covers common defect types of both large and small, and has a wide range of applications.

[0087] In this embodiment, since the high-density composite tightly and uniformly covers the detection area (i.e., the surface of the carbon fiber core), when the carbon fiber core suffers defects such as breakage or insufficient pressure due to compression bonding, the high-density composite will also exhibit breakage or insufficient pressure. Therefore, by detecting the dark projection of the high-density composite, defects in the cable's carbon fiber core can be indirectly measured. Because the projection color of the high-density metal film is dark, the imaging contrast is very obvious. Furthermore, the high-density iodine solution adhesive and metal film in the high-density composite effectively cover common defect types of varying sizes, making it widely applicable and ultimately achieving high contrast in X-ray detection of defects in the tension clamp section of reinforced carbon fiber conductors.

[0088] Example 2:

[0089] Figure 4 This is a schematic diagram of the structure of the carbon fiber cable crimping defect detection device with enhanced contrast described in an embodiment of this application. Figure 4 In the diagram, 401 represents the cable, 404 represents the aluminum liner, and 405 represents the external crimping fixture.

[0090] like Figure 4 As shown in the figure, this application embodiment provides a carbon fiber cable crimping defect detection device with enhanced contrast, including a detection table and a data processing device 408 connected to the detection table. An X-ray emitter 406 and an X-ray image receiver 407 are arranged on the detection table. The cable to be tested, manufactured by the carbon fiber cable crimping defect detection method with enhanced contrast, is arranged between the X-ray emitter 406 and the X-ray image receiver 407. The data processing device 408 is used to receive the detection image transmitted by the X-ray image receiver and process the detection image using the above-mentioned carbon fiber cable crimping defect detection method with enhanced contrast.

[0091] It should be noted that the data processing device 408 can be a computer, platform, or other mobile terminal. The method for detecting defects at the crimped joints of carbon fiber cables with enhanced contrast has already been described in Embodiment 1 and will not be repeated here. This high-contrast carbon fiber cable crimped joint defect detection device uses a testing platform to inspect the cable to be tested, which has a high-density composite structure. The data processing device processes the detected image, and during the processing, defects in the carbon fiber core of the cable can be indirectly measured through the projection of the high-density composite structure.

[0092] Example 3:

[0093] Figure 5 This is a flowchart illustrating the framework of the contrast-enhancing carbon fiber cable crimping defect detection device described in this application embodiment.

[0094] like Figure 5 As shown, this application embodiment provides a carbon fiber cable crimping defect detection device with enhanced contrast, including a detection area fabrication module 10, a winding module 20, a crimping module 30, and a detection and identification module 40;

[0095] The detection area creation module 10 is used to obtain cables with crimped parts and expose the carbon fiber core of the crimped part of the cable as the detection area.

[0096] The winding module 20 is used to wind a high-density composite material around the detection area to obtain the cable to be crimped.

[0097] The crimping module 30 is used to fit the aluminum liner tube onto the cable to be crimped and crimp it using a crimping device to obtain the cable to be tested.

[0098] The detection and identification module 40 is used to use X-ray detection equipment to detect the crimped part of the cable to be inspected and obtain the detection image; and to identify the defects in the carbon fiber core of the cable based on the detection image.

[0099] The winding module 20 is also used to fabricate high-density composites, the steps of which include:

[0100] Obtain a metal thin film that matches the specifications of the detection area;

[0101] One side of the metal film is used as the winding side, and a high-density iodine solution adhesive is evenly applied to the winding side to obtain a high-density composite.

[0102] Among them, the high-density iodine solution glue is formed by mixing iodine solution and solvent glue to form a gel or semi-fluid state with a concentration greater than 500 mg / ml; the thickness of the high-density composite is less than 0.1 mm, and the density of the high-density iodine solution glue is greater than the density of the high-density composite.

[0103] In this embodiment, the winding module 20 is further used to acquire parameter data of the cable and thickness data of the high-density composite. The parameter data includes the inner diameter of the aluminum liner in the cable and the outer diameter of the carbon fiber core in the cable. The number of winding layers is calculated using a layer calculation formula based on the parameter data and thickness data. The high-density composite is then tightly wound around the detection area according to the number of winding layers to obtain the cable to be crimped. The layer calculation formula is:

[0104]

[0105]

[0106] In the formula, L is the number of winding layers, R1 is the inner diameter of the aluminum liner in the cable, R2 is the outer diameter of the carbon fiber core in the cable, and D is the thickness data of the high-density composite.

[0107] In this embodiment of the application, the detection and identification module 40 is further configured to identify a small defect in the carbon fiber core of the cable at the crimping part if the carbon fiber core of the detection image shows only glue penetration into the high-density composite; and to identify a large defect in the carbon fiber core of the cable at the crimping part if the carbon fiber core of the detection image shows glue penetration into the high-density composite and the metal film of the high-density composite is recessed.

[0108] It should be noted that the modules in the device of Embodiment 3 correspond to the steps in the method of Embodiment 1. The content of the method for detecting defects in the crimped part of the carbon fiber cable with enhanced contrast has been described in detail in Embodiment 1. Therefore, the content of the modules in the device will not be described in detail in Embodiment 3.

[0109] Example 4:

[0110] This application provides a terminal device, including a processor and a memory;

[0111] Memory is used to store program code and transfer the program code to the processor;

[0112] The processor is used to execute the above-described method for detecting defects in the crimped joints of carbon fiber cables with enhanced contrast, according to instructions in the program code.

[0113] It should be noted that the processor is used to execute the steps in the above-described embodiment of a method for detecting defects in the crimped joints of carbon fiber cables with enhanced contrast, according to the instructions in the program code. Alternatively, when the processor executes the computer program, it implements the functions of each module / unit in the above-described system / device embodiments.

[0114] For example, a computer program can be divided into one or more modules / units, one or more of which are stored in memory and executed by a processor to complete this application. One or more modules / units can be a series of computer program instruction segments capable of performing a specific function, which describe the execution process of the computer program in a terminal device.

[0115] Terminal devices can be computing devices such as desktop computers, laptops, handheld computers, and cloud servers. Terminal devices may include, but are not limited to, processors and memory. Those skilled in the art will understand that this does not constitute a limitation on the terminal device, which may include more or fewer components than illustrated, or combinations of certain components, or different components. For example, a terminal device may also include input / output devices, network access devices, buses, etc.

[0116] The processor referred to can be a Central Processing Unit (CPU), or other general-purpose processors, digital signal processors (DSPs), application-specific integrated circuits (ASICs), field-programmable gate arrays (FPGAs), or other programmable logic devices, discrete gate or transistor logic devices, discrete hardware components, etc. A general-purpose processor can be a microprocessor or any conventional processor.

[0117] Memory can be an internal storage unit of a terminal device, such as a hard drive or RAM. Memory can also be an external storage device, such as a plug-in hard drive, SmartMedia Card (SMC), Secure Digital (SD) card, or Flash Card. Furthermore, memory can include both internal and external storage units. Memory is used to store computer programs and other programs and data required by the terminal device. Memory can also be used for temporary storage of data that has been output or will be output.

[0118] Those skilled in the art will clearly understand that, for the sake of convenience and brevity, the specific working processes of the systems, devices, and units described above can be referred to the corresponding processes in the foregoing method embodiments, and will not be repeated here.

[0119] In the several embodiments provided in this application, it should be understood that the disclosed systems, apparatuses, and methods can be implemented in other ways. For example, the apparatus embodiments described above are merely illustrative; for instance, the division of units is only a logical functional division, and in actual implementation, there may be other division methods. For example, multiple units or components may be combined or integrated into another system, or some features may be ignored or not executed. Furthermore, the coupling or direct coupling or communication connection shown or discussed may be an indirect coupling or communication connection between apparatuses or units through some interfaces, and may be electrical, mechanical, or other forms.

[0120] The units described as separate components may or may not be physically separate. The components shown as units may or may not be physical units; that is, they may be located in one place or distributed across multiple network units. Some or all of the units can be selected to achieve the purpose of this embodiment according to actual needs.

[0121] Furthermore, the functional units in the various embodiments of this application can be integrated into one processing unit, or each unit can exist physically separately, or two or more units can be integrated into one unit. The integrated unit can be implemented in hardware or as a software functional unit.

[0122] If the integrated unit is implemented as a software functional unit and sold or used as an independent product, it can be stored in a computer-readable storage medium. Based on this understanding, the technical solution of this application, in essence, or the part that contributes to the prior art, or all or part of the technical solution, can be embodied in the form of a software product. This computer software product is stored in a storage medium and includes several instructions to cause a computer device (which may be a personal computer, server, or network device, etc.) to execute all or part of the steps of the methods described in the various embodiments of this application. The aforementioned storage medium includes various media capable of storing program code, such as USB flash drives, portable hard drives, read-only memory (ROM), random access memory (RAM), magnetic disks, or optical disks.

[0123] The above-described embodiments are only used to illustrate the technical solutions of this application, and are not intended to limit them. Although this application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of this application.

Claims

1. A method for detecting defects in the crimped joints of carbon fiber cables with enhanced contrast, characterized in that, Includes the following steps: Obtain cables with crimped sections and expose the carbon fiber core of the crimped section as the inspection area; A high-density composite material is wound around the detection area to obtain the cable to be crimped; An aluminum liner is fitted onto the cable to be crimped and crimped using a crimping device to obtain the cable to be tested. The crimped portion of the cable under test is inspected using X-ray inspection equipment to obtain an inspection image; defects in the carbon fiber core of the cable are identified based on the inspection image. In this process, one side of the metal film is used as the winding side, and a high-density iodine solution adhesive is uniformly applied to the winding side to obtain a high-density composite.

2. The method for detecting defects in the crimped portion of carbon fiber cables with enhanced contrast according to claim 1, characterized in that, include: The steps involved in fabricating high-density composites include: Obtain a metal thin film that matches the specifications of the detection area; The high-density iodine solution adhesive is formed by mixing iodine solution and solvent adhesive to form a gel or semi-fluid state with a concentration greater than 500 mg / ml; the thickness of the high-density composite is less than 0.1 mm, and the density of the high-density iodine solution adhesive is greater than the density of the high-density composite.

3. The method for detecting defects in the crimped portion of carbon fiber cables with enhanced contrast according to claim 1, characterized in that, A high-density composite material is wound around the detection area to obtain the cable to be crimped, comprising: Obtain parameter data of the cable and thickness data of the high-density composite, wherein the parameter data includes the inner diameter of the aluminum liner in the cable and the outer diameter of the carbon fiber core in the cable; The number of winding layers is calculated based on the parameter data and thickness data. The high-density composite is tightly wound around the detection area according to the number of winding layers to obtain the cable to be crimped.

4. The method for detecting defects in the crimped joint of carbon fiber cables with enhanced contrast according to claim 3, characterized in that, The number of winding layers is calculated based on the parameter data and thickness data, including: calculating the number of winding layers using a layer calculation formula based on the parameter data and thickness data, wherein the layer calculation formula is: ； In the formula, L is the number of winding layers, R1 is the inner diameter of the aluminum liner in the cable, R2 is the outer diameter of the carbon fiber core in the cable, and D is the thickness data of the high-density composite.

5. The method for detecting defects in the crimped portion of carbon fiber cables with enhanced contrast according to claim 1, characterized in that, The defects in the carbon fiber core of the image recognition cable detected include: Based on the detection image showing that only high-density composite glue penetration exists in the carbon fiber core, a small defect is identified in the carbon fiber core at the crimping part of the cable. Based on the detection image showing glue penetration into the high-density composite and a depression in the metal film of the high-density composite, a major defect is identified in the carbon fiber core at the crimping point of the cable.

6. A device for detecting defects in the crimped joints of carbon fiber cables with enhanced contrast, characterized in that, The device includes a testing platform and a data processing device connected to the testing platform. The testing platform is equipped with an X-ray emitter and an X-ray image receiver. A cable to be tested, manufactured using the enhanced contrast carbon fiber cable crimping defect detection method as described in any one of claims 1-4, is accommodated between the X-ray emitter and the X-ray image receiver. The data processing device is used to receive the detection image transmitted by the X-ray image receiver and process the detection image using the enhanced contrast carbon fiber cable crimping defect detection method as described in claim 5.

7. A device for detecting defects in the crimped joints of carbon fiber cables with enhanced contrast, characterized in that, It includes a detection area creation module, a winding module, a pressing module, and a detection and recognition module; The detection area fabrication module is used to obtain cables with crimped parts and expose the carbon fiber core of the crimped part in the cable as the detection area. The winding module is used to wind a high-density composite material around the detection area to obtain the cable to be crimped. The crimping module is used to fit the aluminum liner tube onto the cable to be crimped and crimp it using a crimping device to obtain the cable to be tested; The detection and identification module is used to use X-ray detection equipment to detect the crimped part of the cable to be tested and obtain a detection image; Based on the detected images, defects in the carbon fiber core of the cable are identified; The winding module is also used to fabricate high-density composites, and the steps for fabricating high-density composites include: Obtain a metal thin film that matches the specifications of the detection area; One side of the metal film is used as the winding side, and a high-density iodine solution adhesive is uniformly applied to the winding side to obtain a high-density composite. The high-density iodine solution adhesive is formed by mixing iodine solution and solvent adhesive to form a gel or semi-fluid state with a concentration greater than 500 mg / ml; the thickness of the high-density composite is less than 0.1 mm, and the density of the high-density iodine solution adhesive is greater than the density of the high-density composite.

8. The carbon fiber cable crimping defect detection device with enhanced contrast according to claim 7, characterized in that, The winding module is also used to acquire parameter data of the cable and thickness data of the high-density composite, the parameter data including the inner diameter of the aluminum liner in the cable and the outer diameter of the carbon fiber core in the cable; the number of winding layers is calculated using a layer calculation formula based on the parameter data and thickness data; the winding side of the high-density composite is tightly wound around the detection area according to the number of winding layers to obtain the cable to be crimped; the layer calculation formula is: ； In the formula, L is the number of winding layers, R1 is the inner diameter of the aluminum liner in the cable, R2 is the outer diameter of the carbon fiber core in the cable, and D is the thickness data of the high-density composite.

9. The carbon fiber cable crimping defect detection device with enhanced contrast according to claim 7, characterized in that, The detection and identification module is also used to identify a small defect in the carbon fiber core of the cable at the crimping part if the carbon fiber core of the detection image shows that only the high-density composite adhesive has penetrated into it; and to identify a large defect in the carbon fiber core of the cable at the crimping part if the carbon fiber core of the detection image shows that the high-density composite adhesive has penetrated into it and the metal film of the high-density composite is concave.

10. A terminal device, characterized in that, Including the processor and memory; The memory is used to store program code and transmit the program code to the processor; The processor is configured to execute, according to the instructions in the program code, the method for detecting defects in the crimped joint of carbon fiber cables with enhanced contrast as described in any one of claims 1-5.

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