Detection equipment and detection method for composite material structural member and medium

Abstract

The invention discloses detection equipment and a detection method for a composite material structural member and a medium, and relates to the technical field of composite material detection, the detection equipment comprises a processor, a signal detection module and a detection auxiliary module, and the signal detection module is in nested connection with a to-be-detected composite material structural member. The processor is used for controlling the detection auxiliary module to obtain voltage information of the signal detection module after the detection auxiliary module and the signal detection module are connected according to a preset connection mode, and determining a detection result of the to-be-detected composite material structural member based on the voltage information of the signal detection module; the voltage information of the signal detection module is used for representing the stress condition of the to-be-detected composite material structural member. The stress condition of the to-be-detected composite material structural member can be reflected through the voltage information of the signal detection module, whether the to-be-detected composite material structural member is broken or not is judged according to the voltage information of the signal detection module, the detection method is simple and convenient, and the accuracy of the detection result is high.

Description

Technical Field

[0001] The present invention relates to the technical field of composite material detection, and particularly to a detection device, a detection method and a medium for a composite material structural member. Background Art

[0002] A composite material structural member is a member for bearing loads formed by physically or chemically combining two or more materials with different properties, mainly including a reinforcement and a matrix. The reinforcement (such as fibers, particles, etc.) provides high strength and stiffness, and the matrix (such as resin, metal, etc.) plays a role in connecting and transmitting loads. It is widely used in the fields of aerospace, automobile manufacturing, rail transit, mechanical engineering and construction.

[0003] After a composite material structural member is damaged by an external force, common detection methods include visual inspection and non-destructive testing. Visual inspection has certain randomness and cannot detect internal damage of the structural member; non-destructive testing can detect internal damage, but requires more equipment and longer testing procedures, and cannot meet the need for rapid testing. Therefore, it is an urgent problem to design a composite material detection device with a simple structure, easy deployment and low cost to quickly, conveniently and comprehensively detect the fracture condition of a composite material structural member. Summary of the Invention

[0004] The present invention provides a detection device, a detection method and a medium for a composite material structural member, and designs a composite material detection device with a simple structure, easy deployment and low cost, aiming to quickly, conveniently and comprehensively detect the fracture condition of a composite material structural member.

[0005] According to one aspect of the present invention, there is provided a detection device for a composite material structural member, the detection device including: a processor, a signal detection module and a detection auxiliary module. The signal detection module is nestedly connected with the composite material structural member to be detected, and the detection auxiliary module is electrically connected or communicatively connected to the processor;

[0006] The processor is configured to control the detection auxiliary module to obtain voltage information of the signal detection module after the detection auxiliary module and the signal detection module are connected according to a preset connection method, and determine a detection result of the composite material structural member to be detected based on the voltage information of the signal detection module; wherein, the voltage information of the signal detection module is used to represent the stress condition of the composite material structural member to be detected.

[0007] According to another aspect of the present invention, there is provided a detection method for a composite material structural member, the detection method for a composite material structural member being applied to the processor of the detection device for a composite material structural member in any embodiment of the present invention, the detection method including:

[0008] After receiving the device detection instruction, run the detection assistance module, and use the detection assistance module to determine the voltage information of the signal detection module;

[0009] Based on the voltage information of the signal detection module, determine the detection result of the composite material structural member to be detected.

[0010] According to another aspect of the present invention, there is provided a computer-readable storage medium storing computer instructions for causing a processor to implement the detection method of the composite material structural member in any embodiment of the present invention when executed.

[0011] According to another aspect of the present invention, there is provided a computer program product including a computer program which implements the detection method of the composite material structural member in any embodiment of the present invention when executed by a processor.

[0012] The detection device for the composite material structural member of the present invention includes a processor, a signal detection module, and a detection assistance module. The signal detection module is nestedly connected to the composite material structural member to be detected, and the detection assistance module is electrically connected or communicatively connected to the processor. The processor is configured to control the detection assistance module to obtain the voltage information of the signal detection module after the detection assistance module and the signal detection module are connected according to a preset connection method, and determine the detection result of the composite material structural member to be detected based on the voltage information of the signal detection module; the voltage information of the signal detection module is used to represent the stress condition of the composite material structural member to be detected. The present invention designs a simple, low-cost, and convenient-to-use detection device. The voltage information of the signal detection module in the detection device can reflect the stress condition of the composite material structural member to be detected, and the detection result of the composite material structural member to be detected is determined according to the voltage information of the signal detection module, that is, it is judged whether the composite material structural member to be detected is fractured according to the voltage information of the signal detection module. The cost of the detection device is low, the detection method is simple and convenient, and the accuracy of the detection result is high, so as to quickly, conveniently, and comprehensively detect the fracture condition of the composite material structural member.

[0013] It should be understood that the content described in this part is not intended to identify the key or important features of the embodiments of the present invention, nor is it used to limit the scope of the present invention. Other features of the present invention will become easily understood through the following description. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] In order to more clearly illustrate the technical solutions in the present invention, the following will briefly introduce the drawings required for the description of the embodiments. Obviously, the following drawings are only some embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other drawings can be obtained based on these drawings.

[0015] Figure 1 It is a schematic structural diagram of a detection device for a composite material structural member provided by the present invention;

[0016] Figure 2 It is a schematic structural diagram of another detection device for a composite material structural member provided by the present invention;

[0017] Figure 3 It is a schematic structural diagram of a signal detection module provided by the present invention;

[0018] Figure 4 It is a schematic structural diagram of another signal detection module provided by the present invention;

[0019] Figure 5 It is a schematic structural diagram of a metal contact provided by the present invention;

[0020] Figure 6 It is a deployment schematic diagram of a conductive fiber filament bundle provided by the present invention;

[0021] Figure 7 It is a schematic flowchart of a detection method for a composite material structural member provided by the present invention;

[0022] Figure 8 It is a schematic structural diagram of an electronic device provided by the present invention.

[0023] Reference numerals:

[0024] 101 - Processor, 102 - Signal detection module, 1021 - Conductive fiber filament bundle, 1022 - First metal contact, 1023 - Second metal contact, 103 - Detection auxiliary module, 1031 - Power supply unit. Detailed implementation manners

[0025] In order to enable those skilled in the art to better understand the solution of the present invention, the technical solutions in the present invention will be clearly and completely described below with reference to the accompanying drawings in the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments in the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0026] It should be noted that the terms "first", "second", "initial", "intermediate", "target", "candidate", "alternative", etc. in the description, claims and above-mentioned drawings of the present invention are used to distinguish similar objects, and do not necessarily describe a specific order or sequence. It should be understood that the data used in this way can be interchanged under appropriate circumstances, so that the embodiments of the present invention described here can be implemented in an order other than those illustrated or described here. In addition, the terms "comprising" and "having" and any variations thereof are intended to cover non-exclusive inclusion. For example, a process, method, system, product or device comprising a series of steps or units does not necessarily limit to those clearly listed steps or units, but may include other steps or units not clearly listed or inherent to these processes, methods, products or devices.

[0027] The proportion of composite materials in unmanned aerial vehicles (UAVs) is becoming increasingly large. However, during daily maintenance, only simple visual inspection of the appearance can be carried out. Important load-bearing structural components that are not visible or difficult to visually detect are often in the inspection blind spot, and the cracking phenomenon cannot be detected in time, or even processed in time, which may lead to serious structural problems. The present invention designs an easily deployable and low-cost composite material detection device, which can be used to immediately detect the fracture conditions at key positions such as the main beam and mold joint of the composite material of the UAV.

[0028] Figure 1 It is a schematic structural diagram of a detection device for a composite material structural component provided by the present invention. This embodiment is applicable to quickly, conveniently and comprehensively detect the fracture condition of the composite material structural component. Refer to Figure 1 , the detection device specifically includes: a processor 101, a signal detection module 102 and a detection auxiliary module 103. The signal detection module 102 is nestedly connected to the composite material structural component to be detected, and the detection auxiliary module 103 is electrically connected or communicatively connected to the processor 101. Figure 1 The dotted line in

[0029] The processor is used to control the detection auxiliary module to obtain the voltage information of the signal detection module after the detection auxiliary module and the signal detection module are connected according to a preset connection method, and determine the detection result of the composite material structural component to be detected based on the voltage information of the signal detection module; the voltage information of the signal detection module is used to represent the stress condition of the composite material structural component to be detected.

[0030] A processor can be understood as a module with control capabilities and information processing capabilities. For example, a microprocessing unit, a programmable logic controller, a computer, etc. A signal detection module can be understood as a detection probe. The signal detection module is attached to and nested within the maximum stress area of the composite material structure to be detected, and is used to reflect the stress condition of the composite material structure to be detected. A detection assistance module can be understood as a circuit that assists the signal detection module in performing data acquisition work (i.e., the voltage information of the signal detection module). This circuit consists of a DC power supply, a resistor, and a level output line, providing an information acquisition environment for the signal detection module. The composite material structure to be detected can be understood as components that need to be detected, such as the composite material main beam of a drone, a mold joint, etc. The preset connection method can be understood as a prerequisite for the detection device to perform material detection work. For example, the circuit connection is successful and the status of each component is normal, etc. The detection result of the composite material structure to be detected can be understood as the diagnostic conclusion of the composite material structure to be detected, that is, whether the composite material structure to be detected has broken.

[0031] Specifically, the signal detection module is a continuous fiber with internal conductivity and external insulation characteristics, and is composed of a conductive fiber bundle and a metal contact assembly. Figure 2 is a schematic structural diagram of another detection device for a composite material structure provided by the present invention. As can be seen from Figure 2 it, the detection assistance module 103 includes a power supply unit 1031, a first resistor R1, and a second resistor R2. The signal detection module 102 includes a conductive fiber bundle 1021, a first metal contact 1022, and a second metal contact 1023.

[0032] The power supply unit can be a DC power supply with a low voltage of 5V. Combining Figure 2 to elaborate on the connection relationship of each component of the detection device of the present invention, the first end of the first resistor is respectively connected to the first end of the second resistor and the first metal contact. The second end of the first resistor is connected to the first end of the power supply unit. The second end of the second resistor is respectively connected to the second end of the power supply unit and the second metal contact. The first end of the conductive fiber bundle is connected to the first metal contact, and the second end of the conductive fiber bundle is connected to the second metal contact. The port numbers of each component are not shown in the figure.

[0033] When the first end of the second resistor is connected to the first metal contact and the second end of the second resistor is connected to the second metal contact, it is considered that the detection assistance module and the signal detection module are connected according to the preset connection method, and the detection work can be started. Further, as can be seen from Figure 2 it, the voltage information across the second resistor is equal to the voltage information of the signal detection module.

[0034] The conductive fiber bundle is a flat bundle formed by polymerizing unidirectional carbon fiber filaments with continuous fiber characteristics. The metal contacts are made of materials with good electrical conductivity such as copper and aluminum. The conductive fiber bundle and the metal contact assembly are connected by crimping or winding methods to form an integrated fiber sensor.

[0035] Figure 3 It is a schematic structural diagram of a signal detection module provided by the present invention. Figure 3 For the winding method, the center of the metal contact in the winding method is hollowed out to facilitate winding the conductive fiber bundle. When both the first metal contact and the second metal contact are hollow metal patches, the first end of the conductive fiber bundle winds around the opening of the first metal contact for at least two turns and the winding points are cured by conductive silver glue; the second end of the conductive fiber bundle winds around the opening of the second metal contact for at least two turns and the winding points are cured by conductive silver glue. Refer to Figure 3 , wind the two ends of the fiber bundle around the openings of the metal contacts for several turns respectively, apply conductive silver glue to the winding points for curing, and finally fix the assembly of the fiber bundle and the metal contacts into the laminate of the composite material by epoxy resin glue, then the nested connection between the signal detection module and the composite material structural member to be detected can be completed.

[0036] Figure 4 It is a schematic structural diagram of another signal detection module provided by the present invention. Figure 4 For the crimping method, the metal contact in the crimping method includes a crimping end for fixing the conductive fiber bundle. When both the first metal contact and the second metal contact include a welding plane and a crimping end that are fixedly connected to each other, the first end of the conductive fiber bundle is embedded into the crimping end of the first metal contact by a preset length, and the first end of the conductive fiber bundle is connected to the crimping end of the first metal contact by crimping; the second end of the conductive fiber bundle is embedded into the crimping end of the second metal contact by a preset length, and the second end of the conductive fiber bundle is connected to the crimping end of the second metal contact by crimping.

[0037] Embedding the first end of the conductive fiber bundle into the crimping end of the first metal contact by a preset length and embedding the second end of the conductive fiber bundle into the crimping end of the second metal contact by a preset length are to ensure the stability of the connection between the conductive fiber bundle and the metal contact. Refer to Figure 4 , the metal contact has a welding plane (the square on the metal contact) and a crimping end (the crimpable part between the welding plane and the conductive fiber bundle). When connecting the metal contact and the conductive fiber bundle by crimping operation, place the fiber bundle along the groove direction of the metal contact, the bundle penetrates into the crimping end of the contact by a certain length, and then use a crimping pliers to crimp the crimping end of the metal contact and the fiber bundle together, then the nested connection between the signal detection module and the composite material structural member to be detected can be completed. This connection method is simple to operate and can also make the metal contact and the fiber bundle have good conductivity.

[0038] Figure 5 It is a schematic structural diagram of a metal contact provided by the present invention, which is a metal contact before crimping. Figure 4 It is the metal contact after crimping. Combining Figure 4 and Figure 5 it can be seen that the metal patches on both sides of the groove at the clinching end without the crimping operation are upright, which is convenient for placing the fiber bundle. The metal patches on both sides of the groove at the clinching end after crimping are folded to stabilize the fiber bundle.

[0039] The composite material is multi-layered. The conductive fiber bundle is deployed between the first ply and the second ply of the composite material structure member to be detected. The conductive fiber bundle can be embedded during the ply production process of the composite material so that it is co-cured and formed with the main structure of the composite material. The first metal contact and the second metal contact are deployed on the outer surface of the composite material structure member to be detected, which is convenient for connecting the detection auxiliary module to perform material detection. The conductive fiber bundle is composed of at least two mutually parallel flat ribbon-shaped carbon fiber monofilaments.

[0040] The conductive fiber bundle needs to be insulated from the composite material. Therefore, the first ply is an insulating layer or an insulating wire, and the second ply is an insulating layer or an insulating wire. The conductive fiber bundle and the conductive layer can be insulated by an insulating wire or an insulating layer. Therefore, along the direction of the conductive fiber bundle towards the first ply, if the first ply after the first ply is a conductive layer, then the first ply is an insulating layer or an insulating wire; if the first ply after the first ply is not a conductive layer, then the first ply is an insulating layer. Along the direction of the conductive fiber bundle towards the second ply, if the first ply after the second ply is a conductive layer, then the second ply is an insulating layer or an insulating wire; if the first ply after the second ply is not a conductive layer, then the second ply is an insulating layer.

[0041] Figure 6 It is a schematic deployment diagram of a conductive fiber bundle provided by the present invention, showing a typical ply rule. The area to be measured in the figure is the key stress area of the composite material structure member to be detected, that is, the area with the greatest stress. ① and ③ represent insulating layers, one of which is the first ply and the other is the second ply. ⑤ and ⑥ represent other plies in the structure. ② represents the wire fiber bundle, and ④ represents the metal contact connected to one end of the conductive fiber bundle. The other end is also provided with a metal contact, Figure 6 which is not shown in

[0042] Conductive fiber bundles can be deployed between any continuous layers. For example, a number of carbon fiber monofilaments are taken to form a fiber bundle (②), and the monofilaments are parallel to each other. After simple impregnation with epoxy resin glue, they are polymerized into a flat ribbon-shaped bundle, and then the bundle is straightened and connected to the layer in the area to be tested. Conductive metal contacts (④) are laid at the starting point and end point of the bundle respectively, and the metal contacts and the bundle are connected to form a probe by the riveting or winding method described in the present invention. The upper and lower parts of the conductive fiber bundle are isolated by insulating materials such as glass fiber and Kevlar (for example, ①, ③), and the other layers (⑤, ⑥) can follow the design and laying process of the main structure.

[0043] It is worth noting that the outer layer of the composite material is the appearance surface. If the laying requirements of the conductive fiber bundle indicate that the conductive fiber bundle is in contact with the appearance layer, the conductive fiber bundle needs to be sunk one layer before laying. That is, the first lay-up layer is not the appearance layer of the composite material structural part to be tested, and the second lay-up layer is not the appearance layer of the composite material structural part to be tested. The conductive fiber bundle is laid along the maximum force direction of the composite material structural part to be tested. The strength of the conductive fiber bundle is the same as the strength of the composite material structural part to be tested, and the stiffness of the conductive fiber bundle is the same as the stiffness of the composite material structural part to be tested. This is to use the integrity and fracture conditions of the conductive fiber bundle to represent the integrity and fracture conditions of the composite material structural part to be tested. Specifically, the strength and stiffness of the conductive fiber bundle are basically or completely consistent with the raw materials of the composite material structural part, and it also has high flexibility. It can be laid over a long distance on a structural part with curved surface features, which is more in line with the use characteristics of the composite material structural part and improves the reliability and accuracy of the diagnostic structure.

[0044] When the main structure may crack from the outermost layer, the conductive fiber bundle needs to be laid from the outermost layer of the composite material structure to be tested. When the main structure may crack from the innermost layer or the focus is on observing the integrity of the innermost layer, the conductive fiber bundle needs to be laid from the innermost layer of the composite material structure to be tested.

[0045] The outer layer ply sequence should follow the rule of "insulating layer - conductive fiber - insulating layer - original ply". Bury the conductive wire bundle (i.e., conductive fiber bundle) and metal contacts close to the outermost ply. The position of the metal contacts should be set in a non-critical stress area (mold setting marks or tooling positioning). The conductive fiber bundle should pass straight through the area to be measured along the direction of the maximum stress. For example, for a C-shaped all-carbon fiber main beam, set a certain section of the flange as the flange to be measured. During layup, first plan a path from the web to the flange to be measured and then back to the web. Lay a narrow strip of fiberglass woven fabric about 0.03 mm thick along this path. Subsequently, brush epoxy resin glue to fix the metal contacts and conductive wire bundle along this path. Finally, lay another narrow strip of fiberglass woven fabric about 0.03 mm thick along this path to fully cover the metal contacts and conductive wire bundle, and complete all layup and curing operations according to the original layup rules of this C-shaped main beam. It should be noted that after the structure body is cured, holes need to be drilled at the positions of the metal contacts, and screws are used to pass through these holes to connect the wires to the metal contacts.

[0046] For the inner layer laying, after all the layups of the structure body are completed, add "insulating layer - conductive fiber - insulating layer", stick the conductive wire bundle and metal contacts to the innermost side, and the conductive fiber bundle should pass straight through the area to be measured along the direction of the maximum stress. Similarly, after the structure body is cured, holes need to be drilled at the positions of the metal contacts, and screws are used to pass through these holes to connect the wires to the metal contacts, or simply polish the surface of the metal contacts to expose the conductive area and connect the wires to the metal contacts.

[0047] During the ply design process, the insulating layer can borrow the insulating ply of the structure body itself (such as fiberglass layer, Kevlar layer, etc.), or it can be the fiberglass cut separately and laid on the surface and bottom of the carbon fiber monofilament, mainly to isolate the conductive fiber bundle from other conductive fiber layers.

[0048] The technical solution of the above embodiments designs a simple, low-cost and convenient-to-use detection device. The voltage information of the signal detection module in the detection device can reflect the stress condition of the composite material structural member to be detected. The detection result of the composite material structural member to be detected is determined according to the voltage information of the signal detection module, that is, it is judged whether the composite material structural member to be detected is fractured according to the voltage information of the signal detection module. The detection device has low cost, simple and convenient detection method and high accuracy of detection result, and can thus quickly, conveniently and comprehensively detect the fracture condition of the composite material structural member. Secondly, this detection device can be laid on the composite material structural member for continuous use, and it is a structure observation device with high cost performance and long service life.

[0049] Figure 7It is a schematic flowchart of a method for detecting a composite material structural member provided by the present invention. This embodiment is applicable to quickly, conveniently and comprehensively detecting the fracture condition of the composite material structural member. This method can be executed by the processor of the detection device for the composite material structural member provided by the present invention. The processor can be implemented in the form of hardware and / or software. In a specific embodiment, the processor of the detection device for the composite material structural member can be an electronic device. Refer to Figure 7 , and the method specifically includes the following steps:

[0050] S101. After receiving the device detection instruction, run the detection auxiliary module, and use the detection auxiliary module to determine the voltage information of the signal detection module.

[0051] The device detection instruction can be understood as the detection instruction for the composite material structural member to be detected, such as the main beam of the composite material of the unmanned aerial vehicle and the mold joint. Running the detection auxiliary module can be understood as starting the power supply unit of the detection auxiliary module to supply power to all components of the entire detection device, generating a voltage difference across the signal detection module, and then determining the voltage information of the signal detection module, that is, the detected voltage difference. Specifically, the voltage information of the signal detection module can be understood as Figure 2 the voltage across resistor R2 in

[0052] S102. Based on the voltage information of the signal detection module, determine the detection result of the composite material structural member to be detected.

[0053] There is a corresponding relationship between the voltage information of the signal detection module and the detection result of the composite material structural member to be detected. Based on the voltage information of the signal detection module and the corresponding relationship between the voltage information of the signal detection module and the detection result of the composite material structural member to be detected, the detection result corresponding to the detected voltage difference can be obtained. This detection result represents whether there is a fracture problem with the composite material structural member to be detected.

[0054] The voltage difference across resistor R2 is different when the composite material structural member to be detected is fractured and when it is not fractured. Specifically, based on the voltage information of the signal detection module, determining the detection result of the composite material structural member to be detected includes: when the voltage information of the signal detection module is at a high level, determining that the composite material structural member to be detected has a fracture fault; when the voltage information of the signal detection module is at a low level, determining that the composite material structural member to be detected has no fracture fault.

[0055] Exemplarily, a series resistor R1 is used to control the line current. When the conductive fiber bundle is disconnected (i.e., the composite material breaks and fails), a high level appears at both ends of R2; when the conductive fiber bundle is connected (i.e., the composite material is normal), a low level appears at both ends of R2. By judging the level magnitude at both ends of R2, the state of the composite material can be detected to determine whether the composite material is broken or normal. Further, the present invention can also be configured with a display module to display the detection conclusion of the composite material through the display module, and directly reflect whether the structural member has a local fracture by visualizing the detection result, improving the user's detection experience. The display module can be a host computer display interface or a display screen of the detection device, and the present invention does not limit this.

[0056] To ensure the use safety, when detection is not required, the processor will control the DC power supply to be in the off state. When the DC power supply is in the off state, both sides of the resistor R2 are at a low level, and it can be determined that the composite material is normal or in an undetected state.

[0057] The voltage information of the signal detection module in the detection device can reflect the stress condition of the composite material structural member to be detected. In the above embodiment, based on the voltage information of the signal detection module, it is judged whether the composite material structural member to be detected is broken. For example, when the voltage information of the signal detection module is at a high level, it is determined that the composite material structural member to be detected has a fracture fault; when the voltage information of the signal detection module is at a low level, it is determined that the composite material structural member to be detected has no fracture fault. The detection cost is low, the detection method is simple and convenient, and the accuracy of the detection result is high, which can quickly, conveniently and comprehensively detect the fracture condition of the composite material structural member.

[0058] Figure 8 It is a schematic structural diagram of an electronic device provided by the present invention. The electronic device is intended to represent various forms of digital computers, such as laptop computers, desktop computers, workstations, personal digital assistants, servers, blade servers, mainframe computers and other suitable computers. The electronic device can also represent various forms of mobile devices, such as personal digital processors, cellular phones, smart phones, wearable devices (such as helmets, glasses, watches, etc.) and other similar computing devices. The components shown herein, their connections and relationships, and their functions are only examples and are not intended to limit the implementation of the present invention described herein and / or claimed.

[0059] Such as Figure 8As shown, the electronic device 10 includes at least one processor 11 and a memory communicatively connected to the at least one processor 11, such as a read-only memory (ROM) 12, a random access memory (also known as random access memory, RAM) 13, etc. Among them, the memory stores a computer program executable by the at least one processor. The processor 11 can execute various appropriate actions and processes according to the computer program stored in the read-only memory (ROM) 12 or the computer program loaded from the storage unit 18 into the random access memory (RAM) 13. In the RAM 13, various programs and data required for the operation of the electronic device 10 can also be stored. The processor 11, the ROM 12, and the RAM 13 are connected to each other via a bus 14. The input / output (I / O) interface 15 is also connected to the bus 14.

[0060] Multiple components in the electronic device 10 are connected to the I / O interface 15, including: an input unit 16, such as a keyboard, a mouse, etc.; an output unit 17, such as various types of displays, speakers, etc.; a storage unit 18, such as a disk, an optical disc, etc.; and a communication unit 19, such as a network card, a modem, a wireless communication transceiver, etc. The communication unit 19 allows the electronic device 10 to exchange information / data with other devices through a computer network such as the Internet and / or various telecommunication networks.

[0061] The processor 11 can be various general-purpose and / or special-purpose processing components with processing and computing capabilities. Some examples of the processor 11 include but are not limited to a central processing unit (CPU), a graphics processing unit (GPU), various dedicated artificial intelligence (AI) computing chips, various processors running machine learning model algorithms, a digital signal processor (DSP), and any appropriate processor, controller, microcontroller, etc. The processor 11 executes the various methods and processes described above, such as the detection method for composite material structural components.

[0062] In some embodiments, the detection method for composite material structural components can be implemented as a computer program, which is tangibly contained in a computer-readable storage medium, such as the storage unit 18. In some embodiments, part or all of the computer program can be loaded and / or installed onto the electronic device 10 via the ROM 12 and / or the communication unit 19. When the computer program is loaded into the RAM 13 and executed by the processor 11, one or more steps of the detection method for composite material structural components described above can be executed. Alternatively, in other embodiments, the processor 11 can be configured to execute the detection method for composite material structural components in any other appropriate manner (for example, by means of firmware).

[0063] The various embodiments of the systems and techniques described above in this specification can be implemented in digital electronic circuitry, integrated circuit systems, field programmable gate arrays (FPGAs), application specific integrated circuits (ASICs), application specific standard products (ASSPs), systems on a chip (SOCs), complex programmable logic devices (CPLDs), computer hardware, firmware, software, and / or combinations thereof. These various embodiments can include: being implemented in one or more computer programs that are executable and / or interpretable on a programmable system including at least one programmable processor, which may be a special-purpose or general-purpose programmable processor that receives data and instructions from, and transmits data and instructions to, a storage system, at least one input device, and at least one output device.

[0064] The computer programs for implementing the methods of the present invention can be written in any combination of one or more programming languages. These computer programs can be provided to a processor of a general purpose computer, special purpose computer, or other programmable data processing apparatus, such that the computer programs, when executed by the processor, cause the functions / operations specified in the flowchart and / or block diagram to be implemented. The computer programs can be executed entirely on the machine, partly on the machine, as a stand-alone software package partly on the machine and partly on a remote machine, or entirely on the remote machine or server.

[0065] In the context of the present invention, a computer-readable storage medium can be a tangible medium that can contain or store a computer program for use by or in connection with an instruction execution system, apparatus, or device. The computer-readable storage medium can include, but is not limited to, electronic, magnetic, optical, electromagnetic, infrared, or semiconductor systems, apparatus, or devices, or any suitable combination of the foregoing. Alternatively, the computer-readable storage medium can be a machine-readable signal medium. More specific examples of the machine-readable storage medium would include an electrical connection based on one or more wires, a portable computer diskette, a hard disk, a random access memory (RAM), a read-only memory (ROM), an erasable programmable read-only memory (EPROM or Flash memory), an optical fiber, a portable compact disc read-only memory (CD-ROM), an optical storage device, a magnetic storage device, or any suitable combination of the foregoing.

[0066] To provide interaction with a user, the systems and techniques described herein can be implemented on an electronic device having: a display device (e.g., a CRT (cathode ray tube) or LCD (liquid crystal display) monitor) for displaying information to the user; and a keyboard and a pointing device (e.g., a mouse or a trackball) through which the user can provide input to the electronic device. Other kinds of devices can also be used to provide interaction with the user; for example, the feedback provided to the user can be any form of sensory feedback (e.g., visual feedback, auditory feedback, or tactile feedback); and input from the user can be received in any form (including acoustic input, speech input, or tactile input).

[0067] The systems and techniques described herein can be implemented in a computing system that includes backend components (e.g., as a data server), or a computing system that includes middleware components (e.g., an application server), or a computing system that includes frontend components (e.g., a user computer having a graphical user interface or a web browser through which the user can interact with an implementation of the systems and techniques described herein), or a computing system that includes any combination of such backend components, middleware components, or frontend components. The components of the system can be interconnected to each other by digital data communication in any form or medium (e.g., a communication network). Examples of communication networks include: local area network (LAN), wide area network (WAN), blockchain network, and the Internet.

[0068] The computing system can include a client and a server. The client and the server are generally remote from each other and typically interact through a communication network. The client-server relationship is created by computer programs that run on the respective computers and have a client-server relationship with each other. The server can be a cloud server, also known as a cloud computing server or a cloud host, which is a host product in the cloud computing service system, and solves the defects of difficult management and weak business scalability existing in traditional physical hosts and VPS services.

[0069] In one embodiment, the present invention further includes a computer program product, the computer program product includes a computer program, and the computer program, when executed by a processor, implements the detection method of the composite material structural member in any embodiment of the present invention.

[0070] In the process of implementing the computer program product, computer program code for performing the operations of the present invention can be written in one or more programming languages or combinations thereof. The programming languages include object-oriented programming languages such as Java, Smalltalk, C++, and also include conventional procedural programming languages such as the "C" language or similar programming languages. The program code can be executed entirely on the user's computer, partially on the user's computer, executed as an independent software package, partially on the user's computer and partially on a remote computer, or entirely on a remote computer or server. In the case of a remote computer, the remote computer can be connected to the user's computer through any type of network - including a local area network (LAN) or a wide area network (WAN) - or, alternatively, can be connected to an external computer (e.g., through the Internet using an Internet service provider).

[0071] It should be understood that the various forms of the processes shown above can be used, with steps reordered, added, or deleted. For example, the steps recited in the present invention can be executed in parallel, sequentially, or in a different order, as long as the desired results of the technical solution of the present invention can be achieved, and no limitation is made herein.

[0072] The above specific embodiments do not constitute a limitation to the protection scope of the present invention. Those skilled in the art should understand that various modifications, combinations, sub-combinations, and substitutions can be made according to design requirements and other factors. Any modifications, equivalent substitutions, and improvements made within the spirit and principle of the present invention shall be included within the protection scope of the present invention.

Claims

1. An inspection device for a composite material structural member, characterized in that, Comprising: A processor, a signal detection module, and a detection assistance module. The signal detection module is nestedly connected to the composite material structure to be detected, and the detection assistance module is electrically or communicatively connected to the processor; The processor is configured to, after the detection assistance module and the signal detection module are connected in a preset connection manner, control the detection assistance module to obtain the voltage information of the signal detection module, and determine the detection result of the composite material structure to be detected based on the voltage information of the signal detection module; wherein, the voltage information of the signal detection module is used to represent the stress condition of the composite material structure to be detected.

2. The detection device according to claim 1, wherein, The signal detection module includes a conductive fiber bundle, a first metal contact, and a second metal contact. The first end of the conductive fiber bundle is connected to the first metal contact, and the second end of the conductive fiber bundle is connected to the second metal contact; The conductive fiber bundle is disposed between the first ply and the second ply of the composite material structure to be detected, and the first metal contact and the second metal contact are disposed on the outer surface of the composite material structure to be detected; The conductive fiber bundle is composed of at least two mutually parallel flat strip-shaped carbon fiber filaments.

3. The detection device according to claim 2, characterized in that, When both the first metal contact and the second metal contact are hollow metal patches, the first end of the conductive fiber bundle winds around the opening of the first metal contact for at least two turns and the winding point is cured by conductive silver glue; the second end of the conductive fiber bundle winds around the opening of the second metal contact for at least two turns and the winding point is cured by conductive silver glue.

4. The detection device according to claim 2, characterized in that, When both the first metal contact and the second metal contact include a welded plane and a riveting end fixedly connected to each other, the first end of the conductive fiber bundle is embedded into the riveting end of the first metal contact by a preset length, and the first end of the conductive fiber bundle is connected to the riveting end of the first metal contact by a crimping method; the second end of the conductive fiber bundle is embedded into the riveting end of the second metal contact by a preset length, and the second end of the conductive fiber bundle is connected to the riveting end of the second metal contact by a crimping method.

5. The detection device according to claim 2, characterized in that, The detection assistance module includes a power supply unit, a first resistor, and a second resistor. The first end of the first resistor is respectively connected to the first end of the second resistor and the first metal contact, the second end of the first resistor is connected to the first end of the power supply unit, and the second end of the second resistor is respectively connected to the second end of the power supply unit and the second metal contact.

6. The detection device according to claim 2, characterized in that, The first ply is an insulating layer or an insulating wire, and the second ply is an insulating layer or an insulating wire; Along the direction of the conductive fiber bundle towards the first ply, if the first ply after the first ply is a conductive layer, then the first ply is an insulating layer or an insulating wire, and if the first ply after the first ply is not a conductive layer, then the first ply is an insulating layer; Along the direction of the conductive fiber bundle towards the second ply, if the first ply after the second ply is a conductive layer, then the second ply is an insulating layer or an insulating wire; if the first ply after the second ply is not a conductive layer, then the second ply is an insulating layer.

7. The detection device according to claim 6, wherein the first ply is not the appearance layer of the composite material structural member to be detected, and the second ply is not the appearance layer of the composite material structural member to be detected; the conductive fiber bundle is laid along the maximum stress direction of the composite material structural member to be detected, and the strength of the conductive fiber bundle is the same as that of the composite material structural member to be detected and the stiffness of the conductive fiber bundle is the same as that of the composite material structural member to be detected.

8. A detection method for a composite material structural member, characterized in that, A processor of a detection device for a composite material structural member according to any one of claims 1 to 7, the detection method for the composite material structural member comprising: After receiving a device detection instruction, run the detection auxiliary module, and use the detection auxiliary module to determine the voltage information of the signal detection module; Based on the voltage information of the signal detection module, determine the detection result of the composite material structural member to be detected.

9. The detection method according to claim 8, wherein The determining the detection result of the composite material structural member to be detected based on the voltage information of the signal detection module includes: When the voltage information of the signal detection module is at a high level, determine that the composite material structural member to be detected has a fracture fault; When the voltage information of the signal detection module is at a low level, determine that the composite material structural member to be detected has no fracture fault.

10. A computer-readable storage medium, characterized in that, The computer-readable storage medium stores computer instructions for causing a processor to implement the detection method for a composite material structural member according to any one of claims 8 to 9 when executed.

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