A method and device for detecting radar wave absorbing coating layer of surface structural part

Abstract

The present invention discloses a detection method and a detection device for a radar wave absorbing coating layer of a surface structural part, including a detection analyzer and a display thereof, a test lead, and contact poles connected to the inner surface and the outer surface of the radar wave absorbing coating layer of the surface structural part, characterized in that: it also includes a detection device system, and the detection device system includes a region setting module, a sample calibration module, a reference value storage module, an electrical parameter detection module, a calculation and judgment module, an input and output module, an alarm module, and a detection time setting module. By storing the reference value of the calibrated electrical parameters, setting the error range, and performing daily real-time detection and monitoring of the electrical parameters and the calculation and judgment analysis of the error range of the reference value of the calibrated electrical parameters, daily detection of the radar wave absorbing coating layer of the surface structural part during the use of aircraft and other transportation vehicles is realized, its health status is monitored in real time, and its fatigue level is effectively evaluated.

Description

Technical Field

[0001] The present invention relates to the technical field of detection of invisible materials of vehicles such as aircraft, and specifically to nondestructive detection of radar wave absorbing coating layers, and in particular to a detection method and a detection device for radar wave absorbing coating layers of surface structural parts. Background Art

[0002] An important feature of modern combat aircraft is that they have the ability to be invisible under phased array radar scanning. Aircraft stealth generally includes the appearance and structural design and material technology. In material stealth technology, one of the most important items is the application of radar wave absorbing coating layer. The radar wave absorbing coating layer's absorbing performance in the required frequency band is the key. Under normal conditions, the coating has weak conductive properties and can mainly transmit or absorb radar waves in a specific band, thereby reducing radar reflected waves.

[0003] At present, the evaluation index of the absorbing performance is the detection of the reflectivity of the coating material. However, the national military standard method for measuring the reflectivity of the radar wave absorbing coating layer is only applicable to material samples in the laboratory, and cannot be applied to the material reflectivity performance measurement after installation on site. The absorbing coating has a certain lifespan and will be affected by various corrosion and bumps in daily use. Its performance often changes. Therefore, it is very necessary to use on-site testing methods to measure and realize real-time monitoring during the use of the aircraft. There are currently no relevant standards and prescribed monitoring and detection methods for the detection and monitoring of the coating in daily use. At present, there is an urgent need for a monitoring method for the detection and monitoring of the damage of the stealth radar wave absorbing coating layer of the aircraft surface structure.

[0004] In view of the above shortcomings, the present invention adopts the following technical solutions to improve them. Summary of the invention

[0005] The purpose of the present invention is to provide a detection method and a detection device for a radar wave absorbing coating layer of a surface structural part, so as to perform non-destructive detection and monitoring on the radar wave absorbing coating layer of the surface structural part. The proposed technical solution is:

[0006] A method for detecting a radar wave absorbing coating layer of a surface structural part, characterized in that the surface of the surface structural part of the product to be tested is coated with a radar wave absorbing coating layer, and the steps are as follows:

[0007] a. Regional division: Different regions are divided according to the structural characteristics of the tested product. Each structural part of the tested product is divided into a structural part surface structural part of a region;

[0008] b. Sample calibration: Conduct calibration and testing of electrical parameters (capacitance, resistance and other electrical parameters) on standard samples of product surface structural parts with double-sided coating;

[0009] c. Store reference values: calibrate the reference values ​​and their error ranges of the electrical parameters calibrated and tested in step b, and store them in the detection device;

[0010] d. Real-time detection: The electrical parameters (capacitance value, resistance value and other electrical parameters) of each surface structural component are obtained in real time to determine whether the electrical parameters are within the calibration reference value error range of each surface structural component. If the electrical parameters are within the calibration reference value error range, the surface structural component is normal; if the electrical parameters are not within the calibration reference value error range, the surface structural component is abnormal.

[0011] e. Return to real-time detection when judged to be normal, and alarm when judged to be abnormal.

[0012] The real-time detection described in step d can be set to be a number of surface structural parts that are not manually tested at regular intervals, temporary testing, or automatic regular testing by the detection device. When the detection device automatically performs regular testing, it can be set to regularly scan and detect the status of several surface structural parts, or set to a monitoring state.

[0013] A method for detecting a radar wave absorbing coating layer of a surface structural part, characterized in that it also includes coating the inner surface of the surface structural part of the product to be tested with the same radar wave absorbing coating layer as the outer surface.

[0014] A detection method for a radar wave absorbing coating layer of a surface structural part, characterized in that: the real-time detection process also includes a comparative analysis process of electrical parameters, and a judgment state of the error range of the calibration reference value of the capacitance value and the resistance value deviation is compared and analyzed. During the comparative analysis process, when the capacitance value deviation from its calibration reference value is abnormal, and the resistance value deviation from its calibration reference value is normal, it is judged that the radar wave absorbing coating layer of the surface structural part has fallen off or been scratched; when the capacitance value deviation from its calibration reference value is normal, and the resistance value deviation from its calibration reference value is abnormal, it is judged that the overall structure of the surface structural part has been deformed; when both the capacitance value and the resistance value deviate from their calibration reference values ​​abnormally, it is judged that the overall structure of the surface structural part has been deformed, and at the same time, the radar wave absorbing coating layer has fallen off or been scratched; when both the capacitance value and the resistance value deviate from their calibration reference values ​​normally, it is judged that the detection is returned normally.

[0015] A detection method for a radar wave absorbing coating layer of a surface structural part, characterized in that: the real-time detection process also includes a comparative analysis process of calculating the percentage of electrical parameter deviation, respectively calculating the percentage of capacitance value and resistance value deviation from their respective calibration reference values, and comparing and analyzing the percentages. During the comparative analysis process, when the percentage of capacitance value deviation from its calibration reference value is greater than the percentage of resistance value deviation from its calibration reference value, it is determined that the radar wave absorbing coating layer of the surface structural part has fallen off or been scratched; when the percentage of capacitance value deviation from its calibration reference value is less than the percentage of resistance value deviation from its calibration reference value, it is determined that the overall structure of the surface structural part has been deformed; when the percentage of capacitance value deviation from its calibration reference value is equal to the percentage of resistance value deviation from its calibration reference value, when both capacitance value and resistance value are abnormal, it is determined that the overall structure of the surface structural part has been deformed, and the radar wave absorbing coating layer has fallen off or been scratched, and when both capacitance value and resistance value are normal, it is determined that the normal return detection is performed.

[0016] In another case, in a real-time detection process of a detection method for a radar wave absorbing coating layer of a surface structural part, the electrical parameter can be selectively one of a capacitance value and a resistance value. When it is detected that the inner surface radar wave absorbing coating layer and the outer surface radar wave absorbing coating layer of the surface structural parts in each area are not electrically connected, the capacitance value is selected as the electrical parameter for detection. When it is detected that the inner surface radar wave absorbing coating layer and the outer surface radar wave absorbing coating layer of the surface structural parts in each area are electrically connected, the resistance value is selected as the electrical parameter for detection.

[0017] In addition, the present invention also discloses a detection device for a radar wave absorbing coating layer of a surface structural component, comprising a detection analyzer and its display, test leads, and contact poles connected to the inner and outer surfaces of the radar wave absorbing coating layer of the surface structural component, characterized in that it also includes a detection device system, the detection device system includes an area setting module, a sample calibration module, a reference value storage module, an electrical parameter detection module, a calculation and determination module, an input and output module, an alarm module, and a detection time setting module.

[0018] Among them, the detection time setting module can be set to manually irregularly detect a number of surface structural parts, temporary tests or automatic regular detection by the detection device. When the detection time setting module is set to automatic regular detection, it can be set to regularly scan and detect the status of a number of surface structural parts, or set to a monitoring state.

[0019] A detection device for a radar wave absorbing coating layer of a surface structural part, characterized in that the inner surface of the surface structural part of the product to be tested is coated with the same radar wave absorbing coating layer as the outer surface.

[0020] A detection device for a radar wave absorbing coating layer of a surface structural part, characterized in that: the detection device system also includes a comparison and analysis module, which compares and analyzes the judgment state of the error range of the calibration reference value of the capacitance value and the resistance value deviation. In the judgment state of the error range of the calibration reference value of the capacitance value and the resistance value deviation, when the capacitance value deviation is abnormal and the resistance value deviation is normal, it is judged that the radar wave absorbing coating layer of the surface structural part has fallen off or been scratched; when the capacitance value deviation is normal and the resistance value deviation is abnormal, it is judged that the overall structure of the surface structural part is deformed; when both the capacitance value and the resistance value deviate from their calibration reference values ​​abnormally, it is judged that the overall structure of the surface structural part is deformed and the radar wave absorbing coating layer has fallen off or been scratched; when both the capacitance value and the resistance value deviate from their calibration reference values ​​normally, it is judged that the detection is returned normally.

[0021] A detection device for a radar wave absorbing coating layer of a surface structural part, characterized in that: the detection device system also includes a comparison and analysis module, which respectively calculates the percentage of the capacitance value and the resistance value deviation from their respective calibration reference values, and compares and analyzes the percentages. When the comparison and analysis module compares and analyzes the percentage of the capacitance value and the resistance value deviation from their respective calibration reference values, when the percentage of the capacitance value deviation from its calibration reference value is greater than the percentage of the resistance value deviation from its calibration reference value, it is determined that the radar wave absorbing coating layer of the surface structural part has fallen off or been scratched; when the percentage of the capacitance value deviation from its calibration reference value is less than the percentage of the resistance value deviation from its calibration reference value, it is determined that the overall structure of the surface structural part has been deformed; when the percentage of the capacitance value deviation from its calibration reference value is equal to the percentage of the resistance value deviation from its calibration reference value, when both the capacitance value and the resistance value are abnormal, it is determined that the overall structure of the surface structural part has been deformed, and the radar wave absorbing coating layer has fallen off or been scratched, and when both the capacitance value and the resistance value are normal, it is determined that the detection is returned normally.

[0022] In another case, an electrical parameter detection module of a detection device for a radar wave absorbing coating layer of a surface structural component is set to have a selective electrical parameter of a capacitance value or a resistance value. When the electrical parameter detection module detects that the contact poles of the inner surface coating and the outer surface coating of the surface structural component in each region are not electrically connected, the capacitance value is selected as the electrical parameter for detection. When the electrical parameter detection module detects that the contact poles of the inner surface coating and the outer surface coating of the surface structural component in each region are electrically connected, the resistance value is selected as the electrical parameter for detection.

[0023] Among them, a detection device for the radar wave absorbing coating layer of a surface structural part is characterized in that: the detection device is arranged in a management system device of the inspected product such as an aircraft, or is installed as a separate device in the inspected product such as an aircraft.

[0024] According to the above technical scheme, the present invention has the following beneficial effects: First, the present invention divides the structural characteristics of the tested product into different areas, separately detects and monitors the surface structure radar wave absorbing coating layer of each structural part of the tested product, and constructs a test matrix with different nodes to achieve more detailed rapid detection and evaluation of the performance of the surface structure radar wave absorbing coating layer of different structural parts; Second, by utilizing the weak electrical properties of the surface structure radar wave absorbing coating layer, by storing the calibration electric parameter reference value, setting the error range, and performing daily real-time detection and monitoring of the electric parameters and the calculation, judgment and analysis of the error range of the calibration electric parameter reference value, the surface structure of the aircraft and other means of transportation can be realized. Routine inspection of the radar wave absorbing coating layer monitors its health status in real time and effectively evaluates its fatigue level; third, by comparing and analyzing the capacitance and resistance values ​​in the electrical parameters, comparing the judgment status of the error range of the capacitance and resistance values ​​with the reference value, calculating the percentage of the error range of the deviation reference value, and according to the material properties of the capacitance and resistance values, a more accurate analysis and judgment of the damage status of the surface structural parts can be achieved. The present invention realizes that when the reflectivity detection of the radar wave absorbing coating layer of the surface structural part is normal, the damage of the radar wave absorbing coating layer can still be detected and monitored, so that the coating can be repaired in time after the damage is discovered to prevent further deterioration of the damage. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 A flow chart of a detection method according to a preferred embodiment of the present invention;

[0026] Figure 2 A schematic diagram of the area division of the best embodiment of the present invention;

[0027] Figure 3 A schematic diagram of the area division of the best embodiment of the present invention;

[0028] Figure 4 A local enlarged schematic diagram of unit area detection in the best embodiment of the present invention;

[0029] Figure 5 A system module diagram of a detection device according to a preferred embodiment of the present invention;

[0030] Figure 6 A schematic diagram of a comparative analysis process of capacitance and resistance values ​​in a preferred embodiment of the present invention;

[0031] Figure 7 Schematic diagram of the capacitance and resistance percentage comparison analysis process of the best embodiment of the present invention. DETAILED DESCRIPTION

[0032] The present invention will be further described below in conjunction with the accompanying drawings and specific implementation methods.

[0033] like Figure 1 , Figure 2 , Figure 3 and Figure 4 As shown, a method for detecting a radar wave absorbing coating layer on a surface structural part is used for detecting a radar wave absorbing coating layer on a surface structural part of a tested product such as an aircraft, and the steps are as follows:

[0034] a. Regional division: Different regions are divided according to the structural characteristics of the tested product. Each structural part of the tested product is divided into a structural part surface structural part of a region;

[0035] b. Sample calibration: Conduct calibration and testing of electrical parameters (capacitance, resistance and other electrical parameters) on standard samples of product surface structural parts with double-sided coating;

[0036] c. Store reference values: calibrate the reference values ​​and their error ranges of the electrical parameters calibrated and tested in step b, and store them in the detection device;

[0037] d. Real-time detection: The electrical parameters (capacitance value, resistance value and other electrical parameters) of each surface structural component are obtained in real time to determine whether the electrical parameters are within the calibration reference value error range of each surface structural component. If the electrical parameters are within the calibration reference value error range, the surface structural component is normal; if the electrical parameters are not within the calibration reference value error range, the surface structural component is abnormal.

[0038] e. Return to real-time detection when judged to be normal, and alarm when judged to be abnormal.

[0039] The real-time detection described in step d can be set to be a number of surface structural parts that are not manually tested at regular intervals, temporary testing, or automatic regular testing by the detection device. When the detection device automatically performs regular testing, it can be set to regularly scan and detect the status of several surface structural parts, or set to a monitoring state.

[0040] like Figure 2 and Figure 3 In the embodiment, the aircraft to be tested is taken as an example. The surface structural parts of the aircraft are divided into different structural parts according to their main components, namely, the aircraft head 11, the left wing 121, the right wing 122, the fuselage 14, the left tail 131, the right tail 132, the vertical tail 133, and the aircraft rear end 15. The inner and outer surfaces of each structural part are coated with the same radar wave absorbing coating layer, as well as Figure 4 As shown, contact poles 22 connected to the test leads 21 are respectively arranged on the outer surface radar wave absorbing coating layer and the inner surface radar wave absorbing coating layer of each structural component 1 on the surface of the structural component.

[0041] A method for detecting a radar wave absorbing coating layer of a surface structural component, which further comprises coating the inner surface of the surface structural component of the product to be tested with the same radar wave absorbing coating layer as that on the outer surface.

[0042] like Figure 6 As shown, a detection method for the radar wave absorbing coating layer of a surface structural part, the real-time detection process also includes a comparative analysis process of electrical parameters, and a judgment state of the error range of the calibration reference value of the capacitance value and the resistance value deviation is compared and analyzed. During the comparative analysis process, when the capacitance value deviation from its calibration reference value is abnormal, and the resistance value deviation from its calibration reference value is normal, it is judged that the radar wave absorbing coating layer of the surface structural part has fallen off or been scratched; when the capacitance value deviation from its calibration reference value is normal, and the resistance value deviation from its calibration reference value is abnormal, it is judged that the overall structure of the surface structural part is deformed; when both the capacitance value and the resistance value deviate from their calibration reference values ​​abnormally, it is judged that the overall structure of the surface structural part is deformed, and at the same time, the radar wave absorbing coating layer has fallen off or been scratched; when both the capacitance value and the resistance value deviate from their calibration reference values ​​normal, it is judged that the detection is returned normally.

[0043] like Figure 7 As shown, a detection method for the radar wave absorbing coating layer of a surface structural part, the real-time detection process also includes a comparative analysis process of calculating the percentage of electrical parameter deviation, respectively calculating the percentage of the capacitance value and the resistance value deviation from their respective calibration reference values, and comparing and analyzing the percentages. In the comparative analysis process, when the percentage of the capacitance value deviation from its calibration reference value is greater than the percentage of the resistance value deviation from its calibration reference value, it is determined that the radar wave absorbing coating layer of the surface structural part has fallen off or been scratched; when the percentage of the capacitance value deviation from its calibration reference value is less than the percentage of the resistance value deviation from its calibration reference value, it is determined that the overall structure of the surface structural part has been deformed; when the percentage of the capacitance value deviation from its calibration reference value is equal to the percentage of the resistance value deviation from its calibration reference value, when both the capacitance value and the resistance value are abnormal, it is determined that the overall structure of the surface structural part has been deformed, and the radar wave absorbing coating layer has fallen off or been scratched, and when both the capacitance value and the resistance value are normal, it is determined that the normal return detection.

[0044] As shown in the formula C = εs / (4πkd), ε is the dielectric constant of the dielectric, which represents the conductivity of the material; s is the facing area of ​​the two parallel metal plates; k is the electrostatic force constant; d is the distance between the two metal plates. Because the dielectric constant ε and the electrostatic force constant k of the intermediate material are both certain when the surface structure of the structural part is certain, the factor affecting the capacitance value is mainly the facing area. The deformation of the surface structural part is unlikely to cause changes in the facing area, while the shedding and scratching of the radar wave absorbing coating layer of the surface structural part have a greater impact on the facing area.

[0045] However, as shown in the formula: R=ρL / S, the main factors affecting the change in conductor resistance include the conductor's material, length, cross-sectional area and temperature. Except for the case where the temperature is uncontrollable and negligible, when the surface structure of the structural part is certain, the deformation of the surface structure will cause changes in the length and cross-sectional area of ​​the surface structure of the structural part, which can easily lead to relatively large changes in the resistance value.

[0046] In another case, in a real-time detection process of a detection method for a radar wave absorbing coating layer of a surface structural part, the electrical parameter can be selectively one of a capacitance value and a resistance value. When it is detected that the inner surface radar wave absorbing coating layer and the outer surface radar wave absorbing coating layer of the surface structural parts in each area are not electrically connected, the capacitance value is selected as the electrical parameter for detection. When it is detected that the inner surface radar wave absorbing coating layer and the outer surface radar wave absorbing coating layer of the surface structural parts in each area are electrically connected, the resistance value is selected as the electrical parameter for detection.

[0047] In addition, the present invention also discloses a detection device for a radar wave absorbing coating layer of a surface structural component, comprising a detection analyzer 2 and its display 23, a test lead 21, and contact poles 22 connected to the inner and outer surfaces of the radar wave absorbing coating layer of the surface structural component, characterized in that it also includes a detection device system 3, the detection device system 3 includes an area setting module 31, a sample calibration module 32, a reference value storage module 33, an electrical parameter detection module 34, a calculation and determination module 35, an input and output module 37, an alarm module 38 and a detection time setting module 39.

[0048] The detection time setting module 39 can be set to manually perform irregular tests on a number of surface structural parts, temporary tests, or automatic periodic tests by the detection device. When the detection time setting module 39 is set to automatic periodic detection, it can be set to periodically scan and detect the status of a number of surface structural parts, or set to a monitoring state.

[0049] A detection device for a radar wave absorbing coating layer of a surface structural part, further comprising an inner surface of the surface structural part of a tested product coated with the same radar wave absorbing coating layer as the outer surface.

[0050] A detection device for a radar wave absorbing coating layer of a surface structural part, the detection device system also includes a comparison and analysis module 36, which compares and analyzes the judgment state of the error range of the calibration reference value of the capacitance value and the resistance value deviation. In the judgment state of the error range of the calibration reference value of the capacitance value and the resistance value deviation, when the capacitance value deviation is abnormal and the resistance value deviation is normal, it is judged that the radar wave absorbing coating layer of the surface structural part is detached or scratched; when the capacitance value deviation is normal and the resistance value deviation is abnormal, it is judged that the overall structure of the surface structural part is deformed; when both the capacitance value and the resistance value deviate from their calibration reference values ​​abnormally, it is judged that the overall structure of the surface structural part is deformed and the radar wave absorbing coating layer is detached or scratched; when both the capacitance value and the resistance value deviate from their calibration reference values ​​normally, it is judged that the detection is returned normally.

[0051] A detection device for a radar wave absorbing coating layer of a surface structural part, the detection device system also includes a comparison and analysis module 36, which respectively calculates the percentage of the capacitance value and the resistance value deviation from their respective calibration reference values, and compares and analyzes the percentages. When the comparison and analysis module 36 compares and analyzes the percentages of the capacitance value and the resistance value deviation from their respective calibration reference values, when the percentage of the capacitance value deviation from its calibration reference value is greater than the percentage of the resistance value deviation from its calibration reference value, it is determined that the radar wave absorbing coating layer of the surface structural part has fallen off or been scratched; when the percentage of the capacitance value deviation from its calibration reference value is less than the percentage of the resistance value deviation from its calibration reference value, it is determined that the overall structure of the surface structural part is deformed; when the percentage of the capacitance value deviation from its calibration reference value is equal to the percentage of the resistance value deviation from its calibration reference value, when both the capacitance value and the resistance value are abnormal, it is determined that the overall structure of the surface structural part is deformed, and the radar wave absorbing coating layer falls off or is scratched, and when both the capacitance value and the resistance value are normal, it is determined that the normal return detection.

[0052] In another case, an electrical parameter detection module 34 of a detection device for a radar wave absorbing coating layer of a surface structural component is set to have a selective electrical parameter of a capacitance value or a resistance value. When the electrical parameter detection module 34 detects that the contact poles 22 of the inner surface coating and the outer surface coating of the surface structural component in each region are not electrically connected, the capacitance value is selected as the electrical parameter for detection. When the electrical parameter detection module 34 detects that the contact poles 22 of the inner surface coating and the outer surface coating of the surface structural component in each region are electrically connected, the resistance value is selected as the electrical parameter for detection.

[0053] Among them, a detection device for the radar wave absorbing coating layer of a surface structural part is provided, wherein the detection device is arranged in a management system device of a product to be detected such as an aircraft, or is installed as a separate device in a product to be detected such as an aircraft.

[0054] The above is one embodiment of the present invention. In addition, it should be noted that any equivalent or simple changes made based on the structure, features and principles described in this patent concept are included in the protection scope of this patent.

Claims

1. A method for detecting a radar wave absorbing coating layer of a surface structural part, characterized in that The surface of the surface structural parts of the product under test is coated with a radar wave absorbing coating layer, the steps are as follows: a. Area division: Different areas are divided according to the structural characteristics of the product under test. Each structural part of the product under test is divided into a structural part surface structural part of a region; b. Sample calibration: Conduct calibration and detection of electrical parameters for each standard sample of product surface structural parts with double-sided coating, including capacitance and resistance values; c. Store reference values: calibrate the reference values ​​and their error ranges of the electrical parameters calibrated and tested in step b, and store them in the detection device; d. Real-time detection: obtain the electrical parameters of each surface structural component in real time, and determine whether the electrical parameters are within the calibration reference value error range of each surface structural component. If it is determined to be within the calibration reference value error range, the surface structural component is normal; if it is determined not to be within the calibration reference value error range, the surface structural component is abnormal; e. Return to real-time detection when it is judged to be normal, and alarm when it is judged to be abnormal; The real-time detection process also includes a comparative analysis process of electrical parameters, which compares and analyzes the determination status of the error range of the calibration reference value of the capacitance value and the resistance value deviation; In the comparative analysis process, when the capacitance value deviates from the calibration reference value to an abnormal value, and the resistance value deviates from the calibration reference value to a normal value, it is determined that the radar wave absorbing coating layer of the surface structural part is peeled off or scratched; when the capacitance value deviates from the calibration reference value to a normal value, and the resistance value deviates from the calibration reference value to an abnormal value, it is determined that the overall structure of the surface structural part is deformed; when both the capacitance value and the resistance value deviate from the calibration reference value to an abnormal value, it is determined that the overall structure of the surface structural part is deformed, and at the same time, the radar wave absorbing coating layer is peeled off or scratched; when both the capacitance value and the resistance value deviate from the calibration reference value to a normal value, it is determined that the return detection is normal; The real-time detection process also includes a comparative analysis process of calculating the percentage of electrical parameter deviation, respectively calculating the percentage of the capacitance value and the resistance value deviation from their respective calibration reference values, and comparing and analyzing the percentages; In the comparative analysis process, when the percentage of the capacitance value deviation from its calibrated reference value is greater than the percentage of the resistance value deviation from its calibrated reference value, it is determined that the radar wave absorbing coating layer of the surface structural component is peeled off or scratched; when the percentage of the capacitance value deviation from its calibrated reference value is less than the percentage of the resistance value deviation from its calibrated reference value, it is determined that the overall structure of the surface structural component is deformed; when the percentage of the capacitance value deviation from its calibrated reference value is equal to the percentage of the resistance value deviation from its calibrated reference value, when both the capacitance value and the resistance value are abnormal, it is determined that the overall structure of the surface structural component is deformed, and the radar wave absorbing coating layer is peeled off or scratched, and when both the capacitance value and the resistance value are normal, it is determined to be a normal return detection.

2. The method for detecting a radar wave absorbing coating layer of a surface structural part according to claim 1, characterized in that: The real-time detection described in step d is set to be a temporary test of a number of surface structural parts by manual irregular testing or automatic regular testing by a detection device.

3. The method for detecting a radar wave absorbing coating layer of a surface structural part according to claim 2, characterized in that: When the detection device is automatically and regularly detected, it is set to regularly scan and detect the status of a number of surface structural parts, or is set to a monitoring state.

4. The method for detecting a radar wave absorbing coating layer of a surface structural part according to claim 1, characterized in that: The method also includes coating the inner surface of the surface structure of the product under test with the same radar wave absorbing coating layer as the outer surface.

5. The method for detecting a radar wave absorbing coating layer of a surface structural component according to claim 1, characterized in that: During the real-time detection process, the electrical parameter is a capacitance value or a resistance value. When it is detected that the inner surface radar wave absorbing coating layer and the outer surface radar wave absorbing coating layer of the surface structural parts in each area are not electrically connected, the capacitance value is selected as the electrical parameter for detection. When it is detected that the inner surface radar wave absorbing coating layer and the outer surface radar wave absorbing coating layer of the surface structural parts in each area are electrically connected, the resistance value is selected as the electrical parameter for detection.

6. A detection device for a radar wave absorbing coating layer of a surface structural part, comprising a detection analyzer and a display thereof, a test lead, and contact poles connected to the inner surface and the outer surface of the radar wave absorbing coating layer of the surface structural part, characterized in that: Also includes a detection device system, the detection device system includes an area setting module, a sample calibration module, a reference value storage module, an electrical parameter detection module, a calculation and determination module, an input and output module, an alarm module and a detection time setting module; The electrical parameter detection module sets the electrical parameter as a capacitance value or a resistance value. When the electrical parameter detection module detects that the contact poles of the inner surface coating and the outer surface coating of the surface structural parts of each region are not electrically connected, the capacitance value is selected as the electrical parameter for detection. When the electrical parameter detection module detects that the contact poles of the inner surface coating and the outer surface coating of the surface structural parts of each region are electrically connected, the resistance value is selected as the electrical parameter for detection. The detection device system also includes a first comparison and analysis module, which compares and analyzes the capacitance value and the resistance value deviation to determine the state of the error range of the calibration reference value; The first comparison and analysis module, in the determination state of analyzing the error range of the calibration reference values ​​of the capacitance value and the resistance value deviation, determines that the radar wave absorbing coating layer of the surface structure part is peeled off or scratched when the capacitance value deviation is abnormal and the resistance value deviation is normal; determines that the overall structure of the surface structure part is deformed when the capacitance value deviation is normal and the resistance value deviation is abnormal; determines that the overall structure of the surface structure part is deformed and the radar wave absorbing coating layer is peeled off or scratched when both the capacitance value and the resistance value deviate from their calibration reference values ​​abnormally; determines that the overall structure of the surface structure part is deformed and the radar wave absorbing coating layer is peeled off or scratched when both the capacitance value and the resistance value deviate from their calibration reference values ​​normally; determines that the detection is returned normally; The detection device system also includes a second comparison analysis module, which calculates the percentage of the capacitance value and the resistance value deviation from their respective calibration reference values, and compares and analyzes the percentages; The second comparison and analysis module compares and analyzes the percentages of the capacitance value and the resistance value deviation from their respective calibrated reference values. When the percentage of the capacitance value deviation from its calibrated reference value is greater than the percentage of the resistance value deviation from its calibrated reference value, it is determined that the radar wave absorbing coating layer of the surface structural component has fallen off or been scratched; when the percentage of the capacitance value deviation from its calibrated reference value is less than the percentage of the resistance value deviation from its calibrated reference value, it is determined that the overall structure of the surface structural component is deformed; when the percentage of the capacitance value deviation from its calibrated reference value is equal to the percentage of the resistance value deviation from its calibrated reference value, when both the capacitance value and the resistance value are abnormal, it is determined that the overall structure of the surface structural component is deformed and the radar wave absorbing coating layer is fallen off or scratched, and when both the capacitance value and the resistance value are normal, it is determined that the normal return detection.

7. The detection device for the radar wave absorbing coating layer of a surface structural part according to claim 6, characterized in that: The detection time setting module is set to manually perform temporary tests on a number of surface structural parts at irregular intervals or to automatically perform regular tests on the detection device.

8. The detection device for the radar wave absorbing coating layer of a surface structural part according to claim 7, characterized in that: When the detection time setting module is set to automatic periodic detection, it is set to periodically scan and detect the status of several surface structural parts, or it is set to a monitoring state.

9. The detection device for the radar wave absorbing coating layer of a surface structural part according to claim 6, characterized in that: The inner surface of the surface structural part of the tested product is coated with the same radar wave absorbing coating layer as the outer surface.

10. The detection device for the radar wave absorbing coating layer of a surface structural part according to claim 6, characterized in that: The detection device is arranged in a management system device of the detected product, or is installed in the detected product as a separate device.

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