CN116026927A - Method for detecting bonding defect of reinforcing sheet - Google Patents
Method for detecting bonding defect of reinforcing sheet Download PDFInfo
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- CN116026927A CN116026927A CN202211112604.6A CN202211112604A CN116026927A CN 116026927 A CN116026927 A CN 116026927A CN 202211112604 A CN202211112604 A CN 202211112604A CN 116026927 A CN116026927 A CN 116026927A
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Abstract
The application discloses a detection method for bonding defects of reinforcing sheets, and aims to solve the technical problem that the bonding quality detection effect of the composite reinforcing sheets is poor in the prior art. The detection method comprises the following steps: preparing a reference block; the reference block comprises an artificial defect, and the artificial defect adopts polytetrafluoroethylene as a raw material; performing defect detection on the reference test block by adopting ultrasonic detection equipment to obtain a detection waveform reference diagram and defect detection parameters of the reference test block; performing defect detection on the reinforcing sheet to be detected by adopting the defect detection parameters to obtain a detection waveform diagram of the reinforcing sheet to be detected; comparing the detection waveform diagram with the detection waveform reference diagram, and performing qualitative and positioning on the bonding defect of the reinforcing sheet to be detected.
Description
Technical Field
The application relates to the technical field of material quality detection, in particular to a detection method for bonding defects of a reinforcing sheet.
Background
The reduction of the mechanical and thermal stability of the components and the reduction of the load-carrying capacity of the structure are inevitable in aerospace structures due to the fatigue, maintenance and other reasons caused by the use of the structure. Therefore, the aircraft structure is required to be reinforced, and the technical problem that the mechanical properties of the original components of the aircraft are not satisfactory is solved by sticking the composite reinforcing sheet on the aircraft structure in the prior art, so that the service life of the in-service aircraft is prolonged.
However, how to detect the bonding quality of the reinforced composite material sheet after the aircraft structure is reinforced becomes a problem to be solved.
Disclosure of Invention
The main purpose of the application is to provide a detection method for the bonding degree of the reinforcing sheet, and aims to solve the technical problem that the bonding quality detection effect of the composite reinforcing sheet is poor in the prior art.
In order to solve the above technical problems, the present application proposes: a detection method of bonding defects of a reinforcing sheet comprises the following steps:
preparing a reference block; the reference block comprises an artificial defect, and the artificial defect adopts polytetrafluoroethylene as a raw material;
performing defect detection on the reference test block by adopting ultrasonic detection equipment to obtain a detection waveform reference diagram and defect detection parameters of the reference test block;
performing defect detection on the reinforcing sheet to be detected by adopting the defect detection parameters to obtain a detection waveform diagram of the reinforcing sheet to be detected;
comparing the detection waveform diagram with the detection waveform reference diagram, and performing qualitative and positioning on the bonding defect of the reinforcing sheet to be detected.
As some optional embodiments of the present application, the structure and the material of the reference block are the same as those of the reinforcing sheet to be detected.
As some optional embodiments of the present application, the artificial defect includes: defect No. 1, defect No. 2, defect No. 3, defect No. 4, defect No. 5, defect No. 6, defect No. 7, defect No. 8, defect No. 9, defect No. 10, defect No. 11, and defect No. 12;
wherein the defect No. 1 and the defect No. 2 are arranged between the upper surface layers of the reference block;
the defect No. 3 and the defect No. 4 are arranged between the middle layers of the reference blocks;
the defect No. 5 and the defect No. 6 are arranged between the lower surface layers of the reference blocks;
the defect No. 7 and the defect No. 8 are arranged between the adhesive films of the reference test block;
the defect No. 9 and the defect No. 10 are arranged between the skin of the reference block and the adhesive film;
and the defect 11 and the defect 12 are arranged between the metal layers of the reference block.
As some optional embodiments of the application, the defect No. 1, defect No. 3, defect No. 5, defect No. 7, defect No. 9 and defect No. 11 are verification parameter defects, and the sizes are all
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As some optional embodiments of the application, the sizes of the verification parameter defects are all
As some optional embodiments of the application, the defect No. 2, defect No. 4, defect No. 6, defect No. 8, defect No. 10 and defect No. 12 are test defects, all of which are of the size
As some optional embodiments of the application, the sizes of the verification parameter defects are all
As some optional embodiments of the present application, the performing defect detection on the reference block by using an ultrasonic detection device to obtain a detection waveform reference diagram and a defect detection parameter of the reference block includes:
performing sensitivity verification on the ultrasonic detection equipment based on the first artificial defect;
and after the verification is finished, detecting the position and the category of the reference block based on the second artificial defect, and obtaining a detection waveform reference diagram and defect detection parameters of the reference block.
As some optional embodiments of the present application, the performing sensitivity verification on the ultrasonic detection device based on the first artificial defect includes:
performing sensitivity verification on the ultrasonic detection equipment based on the first artificial defect to obtain waveform display of a good area and a defective area; the amplitude of the excellent area and the defect area is 10dB-15dB.
As some optional embodiments of the present application, the performing sensitivity verification on the ultrasonic detection device based on the first artificial defect to obtain waveform display of a preferred area and a defective area includes:
detecting the first artificial defect of a reference block by adopting ultrasonic detection equipment, placing a probe of the ultrasonic detection equipment in a good region of the reference block, adjusting detection parameters of the ultrasonic detection equipment to enable incident waves and multiple bottom waves to appear in a display screen of the ultrasonic detection equipment, and adjusting the amplitude of the primary bottom waves to 80% to obtain waveform display of the good region;
the detection parameters are kept unchanged, and a probe of the ultrasonic detection equipment is placed at an artificial defect of a reference block to be detected, so that waveform display of a defect area is obtained; in the waveform display of the defect area, no bottom wave exists and the interface wave is higher than 80%.
As some optional embodiments of the present application, performing defect detection on the reinforcing sheet to be detected by using the defect detection parameter to obtain a detection waveform diagram of the reinforcing sheet to be detected, including:
performing defect detection on the reinforcing sheet to be detected by adopting the defect detection parameters to obtain a detection waveform diagram of the reinforcing sheet to be detected;
if the interfacial wave in the detection waveform diagram is higher than 80% and the bottom wave is lower than 40%, the bonding defect is considered to exist.
Compared with the prior art, the detection method comprises the following steps of: preparing a reference block; the reference block comprises an artificial defect, and the artificial defect adopts polytetrafluoroethylene as a raw material; performing defect detection on the reference test block by adopting ultrasonic detection equipment to obtain a detection waveform reference diagram and defect detection parameters of the reference test block; performing defect detection on the reinforcing sheet to be detected by adopting the defect detection parameters to obtain a detection waveform diagram of the reinforcing sheet to be detected; comparing the detection waveform diagram with the detection waveform reference diagram, and performing qualitative and positioning on the bonding defect of the reinforcing sheet to be detected. Because in actual operation, when reinforcing the aircraft structure, the complexity of reinforcing structure leads to, reinforcing structure's inside defect is difficult to be examined to influence the safety in utilization aircraft, and this application adopts polytetrafluoroethylene as the raw and other materials of artificial defect, polytetrafluoroethylene's acoustic characteristic is similar with the air, can reduce the debonding and layering type defect to the highest degree, can be better simulate layering (air bed) defect, can place it in the composite material interlaminar, between composite material and the glued membrane, between glued membrane and the metal aluminum plate etc. all positions that can produce the defect, thereby simulate better reduction debonding and layering type defect, and then effectually detect composite material reinforcing plate's bonding quality.
Drawings
Fig. 1 is a flow chart of a method for detecting adhesion of a reinforcing sheet according to an embodiment of the present application;
FIG. 2 is a top view of a reference block according to an embodiment of the present application;
FIG. 3 is a cross-sectional view of a reference block according to an embodiment of the present application;
FIG. 4 is a schematic diagram of a detection process of an ultrasonic detection apparatus according to an embodiment of the present application;
FIG. 5 is a waveform display diagram of defect number 1 of the reference block according to the embodiment of the present application;
FIG. 6 is a waveform display diagram of defect number 3 of the reference block according to the embodiment of the present application;
FIG. 7 is a waveform display diagram of defect No. 5 of the reference block according to the embodiment of the present application;
FIG. 8 is a waveform display diagram of defect No. 7 of the reference block according to the embodiment of the present application;
FIG. 9 is a waveform display diagram of defect No. 9 of the reference block according to the embodiment of the present application;
fig. 10 is a waveform display diagram of defect No. 11 of the reference block according to the embodiment of the present application.
Detailed Description
It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the present application.
The reduction of the mechanical and thermal stability of the components and the reduction of the load-carrying capacity of the structure are inevitable in aerospace structures due to the fatigue, maintenance and other reasons caused by the use of the structure. It is therefore necessary to reinforce the aircraft structure. The first time in the 70 s of the 20 th century, the Australian aviation and marine research institute (Aeronautical and Maritime Research Laboratory) used composite patch cementing to repair metal aircraft components with great success. Compared with the traditional mechanical screwing and riveting repair, the composite material patch has the advantages of light weight, high strength, no re-damage to the components, no generation of new stress concentration sources and the like. The composite material patch is stuck on the metal material, so that the condition that the mechanical property of the original component is not in line with the requirement can be effectively solved, and the service life of the in-service aircraft is prolonged.
After reinforcement, how to ensure the bonding quality is a problem to be solved. Aiming at the reinforcement repair process, the special test block for reinforcement repair of the composite material is manufactured, and the test block is tested by using an ultrasonic detection means, so that the problem that the internal quality of the reinforcement repair process of the composite material cannot be controlled is solved, and the reinforcement repair process has practical application significance.
The problem of composite material reinforced structure is a new problem in recent years, and no mature method and standard exist at present in the face of new detection requirements. There are the following problems to be solved: the manufacturing method of the bonding quality comparison test block without the composite material reinforcing sheet; an ultrasonic detection method for bonding quality of a non-composite reinforcing sheet; and (3) evaluating the bonding quality of the reinforced sheet without the composite material.
In view of the above technical problems, as shown in fig. 1, an embodiment of the present application provides a method for detecting an adhesion defect of a reinforcing sheet, including the following steps:
s10, preparing a reference block; the reference block comprises an artificial defect, and polytetrafluoroethylene is used as a raw material for the artificial defect.
In specific application, the structure and the material of the reference block are the same as those of the reinforcing sheet to be detected. If the reinforcing sheet to be detected consists of an aluminum plate with the thickness of 2mm and 16 layers of composite materials. The reference block is likewise composed of a 2mm aluminium plate, 16 layers of composite material. In order to better simulate the seam defect, the application uses two aluminum plates for splicing, and a piece of aluminum plate is glued under the seam.
In a specific application, the reference block contains artificial defects, wherein polytetrafluoroethylene is used as a raw material for the artificial defects, the sound conduction characteristics of the artificial defects are most similar to those of air, and the defects of debonding and layering type can be reduced to the highest degree. The artificial defect comprises: defect No. 1, defect No. 2, defect No. 3, defect No. 4, defect No. 5, defect No. 6, defect No. 7, defect No. 8, defect No. 9, defect No. 10, defect No. 11, and defect No. 12; wherein the defect No. 1 and the defect No. 2 are arranged between the upper surface layers of the reference block; the defect No. 3 and the defect No. 4 are arranged between the middle layers of the reference blocks; the defect No. 5 and the defect No. 6 are arranged between the lower surface layers of the reference blocks; the defect No. 7 and the defect No. 8 are arranged between the adhesive films of the reference test block; the defect No. 9 and the defect No. 10 are arranged between the skin of the reference block and the adhesive film; and the defect 11 and the defect 12 are arranged between the metal layers of the reference block.
In a specific application, the defect No. 1, defect No. 3, defect No. 5, defect No. 7, defect No. 9 and defect No. 11 are verification parameter defects, and the sizes are all
Preferably, the sizes of the verification parameter defects are all +.>
The method is mainly used for verifying the sensitivity of the ultrasonic detection equipment system. The defect No. 2, defect No. 4, defect No. 6, defect No. 8, defect No. 10 and defect No. 12 are test defects, and the sizes are all +.>
Preferably, the sizes of the verification parameter defects are all +.>
The method is mainly used for detecting the defect positions. In practical applications, due to the structural complexity of the reinforcing structure, the defect position may exist not only on the surface of the reinforcing structure but also inside the reinforcing structure, and no related nondestructive testing method is disclosed at present. The common detection method of the composite material is a ray or ultrasonic method, and because of the complexity and in-service characteristics of the reinforcing structure, ray detection cannot be directly applied to the scene, so that the method of ultrasonic detection is adopted. The method and the device have the advantages that the artificial defects on the test block are designed in a diversified mode, so that 6 kinds of waveform display can be performed on the defects at 6 different positions when the defects are detected, and of course, the method and the device are easy to generate the 6 kinds of defects when the aircraft structure is subjected to reinforcement treatment according to actual research, and therefore the 6 kinds of defects are correspondingly designed; later along with the development of the technology, if more defects are found, the artificial defects in the technical scheme can correspondingly increase.
And S20, performing defect detection on the reference block by adopting ultrasonic detection equipment to obtain a detection waveform reference diagram and defect detection parameters of the reference block.
In a specific application, the performing defect detection on the reference block by using an ultrasonic detection device to obtain a detection waveform reference diagram and defect detection parameters of the reference block includes:
s21, performing sensitivity verification on the ultrasonic detection equipment based on the first artificial defect;
in a specific application, the sensitivity of the ultrasonic detection device is verified by the following steps:
performing sensitivity verification on the ultrasonic detection equipment based on the first artificial defect to obtain waveform display of a good area and a defective area; the amplitude of the excellent area and the defect area is 10dB-15dB.
And S22, after the verification is completed, detecting the position and the category of the reference block based on the second artificial defect, and obtaining a detection waveform reference diagram and defect detection parameters of the reference block.
In specific application, detecting the first artificial defect of a reference block by adopting ultrasonic detection equipment, placing a probe of the ultrasonic detection equipment in a good region of the reference block, adjusting detection parameters of the ultrasonic detection equipment to enable incident waves and multiple bottom waves to appear in a display screen of the ultrasonic detection equipment, and adjusting the amplitude of the primary bottom waves to 80% to obtain a waveform display of the good region; the detection parameters are kept unchanged, and a probe of the ultrasonic detection equipment is placed at an artificial defect of a reference block to be detected, so that waveform display of a defect area is obtained; in the waveform display of the defect area, no bottom wave exists and the interface wave is higher than 80%.
And S30, performing defect detection on the reinforcing sheet to be detected by adopting the defect detection parameters, and obtaining a detection waveform diagram of the reinforcing sheet to be detected.
In a specific application, performing defect detection on the reinforcing sheet to be detected by using the defect detection parameters to obtain a detection waveform diagram of the reinforcing sheet to be detected, including: performing defect detection on the reinforcing sheet to be detected by adopting the defect detection parameters to obtain a detection waveform diagram of the reinforcing sheet to be detected; if the interfacial wave in the detected waveform is higher than 80% and the bottom wave is lower than 40%, the bonding defect is considered to exist, and step S40 is performed.
And S40, comparing the detection waveform diagram with the detection waveform reference diagram, and carrying out qualitative and positioning on the bonding defect of the reinforcing sheet to be detected.
In a specific application, when the interfacial wave in the detected waveform is higher than 80% and the bottom wave is lower than 40%, the bonding defect is considered to exist. And then comparing the obtained detection waveform diagram with a detection waveform reference diagram of a reference block to judge which of 6 different defect positions belong to, so as to locate and qualify the defects of the reinforcing sheet to be detected.
Compared with the prior art, the detection method comprises the following steps of: preparing a reference block; the reference block comprises an artificial defect, and the artificial defect adopts polytetrafluoroethylene as a raw material; performing defect detection on the reference test block by adopting ultrasonic detection equipment to obtain a detection waveform reference diagram and defect detection parameters of the reference test block; performing defect detection on the reinforcing sheet to be detected by adopting the defect detection parameters to obtain a detection waveform diagram of the reinforcing sheet to be detected; comparing the detection waveform diagram with the detection waveform reference diagram, and performing qualitative and positioning on the bonding defect of the reinforcing sheet to be detected. Because in actual operation, when reinforcing the aircraft structure, the complexity of reinforcing structure leads to, reinforcing structure's inside defect is difficult to be examined to influence the safety in utilization aircraft, and this application adopts polytetrafluoroethylene as the raw and other materials of artificial defect, polytetrafluoroethylene's acoustic characteristic is similar with the air, can reduce the debonding and layering type defect to the highest degree, can be better simulate layering (air bed) defect, can place it in the composite material interlaminar, between composite material and the glued membrane, between glued membrane and the metal aluminum plate etc. all positions that can produce the defect, thereby simulate better reduction debonding and layering type defect, and then effectually detect composite material reinforcing plate's bonding quality.
The following describes the above technical scheme in detail with reference to specific embodiments:
example 1
S10, preparing a reference block; the reference block comprises an artificial defect, and the artificial defect adopts polytetrafluoroethylene as a raw material; the top view of the reference block is shown in FIG. 2, and the cross-sectional view of the reference blockAs shown in fig. 3. It can be seen that the reference block has a thickness of 300mm, a length of 600mm and a width of 300mm; as can be seen from fig. 2 and 3, the positions and the sizes of the artificial defects and the interval distance between the artificial defects are respectively designed, and as shown in fig. 2: the artificial defects comprise a first artificial defect and a second artificial defect; wherein the first artificial defect has a size of
The method is mainly used for verifying the sensitivity of the system; the second artificial defect has a size of +.>
The method is mainly used for qualifying and locating the defects. Wherein the artificial defect comprises: defect No. 1, defect No. 2, defect No. 3, defect No. 4, defect No. 5, defect No. 6, defect No. 7, defect No. 8, defect No. 9, defect No. 10, defect No. 11, and defect No. 12; wherein the size of defect No. 1, defect No. 3, defect No. 5, defect No. 7, defect No. 9, defect No. 11 is +.>
Wherein the size of defect No. 2, defect No. 4, defect No. 6, defect No. 8, defect No. 10, defect No. 12 is +.>
The defect No. 1 and the defect No. 2 are between the upper surface layers of the reference block, namely between 1 and 2 layers of the composite material; the defect No. 3 and the defect No. 4 are arranged in the middle layer of the reference block, namely between 6 layers and 7 layers of the composite material; the defect No. 5 and the defect No. 6 are between the lower surface layers of the reference block, namely between 11-12 layers of the composite material; the defect No. 7 and the defect No. 8 are between the adhesive films of the comparison test block; the No. 9 defect and the No. 10 defect are arranged between the composite skin and the adhesive film of the reference block; the defect No. 11 and the defect No. 12 are between the adhesive film and the metal layer of the reference block.
And S20, performing defect detection on the reference block by adopting ultrasonic detection equipment to obtain a detection waveform reference diagram and defect detection parameters of the reference block. The schematic diagram of the ultrasonic detection device is shown in fig. 4, in which reference numeral 1 represents a display screen of the ultrasonic detection device, reference numeral 2 represents a defect of the test block, reference numeral 3 represents the test block, and reference numeral 4 represents a probe of the ultrasonic detection device. It can be seen that the step is to detect the first artificial defect of the reference block by using an ultrasonic detection device, place a probe of the ultrasonic detection device in a good area of the reference block, adjust detection parameters of the ultrasonic detection device, make an incident wave and a plurality of bottom waves appear in a display screen of the ultrasonic detection device, adjust the amplitude of the primary bottom wave to 80%, and obtain a waveform display in the good area; the detection parameters are kept unchanged, and a probe of the ultrasonic detection equipment is placed at an artificial defect of a reference block to be detected, so that waveform display of a defect area is obtained; in the waveform display of the defect area, no bottom wave exists and the interface wave is higher than 80%.
The waveforms corresponding to the 6 defects obtained according to the above steps are shown in fig. 5 to 10, wherein fig. 5 is a waveform display diagram of the defect No. 1, fig. 6 is a waveform display diagram of the defect No. 3, fig. 7 is a waveform display diagram of the defect No. 5, fig. 8 is a waveform display diagram of the defect No. 7, fig. 9 is a waveform display diagram of the defect No. 9, and fig. 10 is a waveform display diagram of the defect No. 11.
Step S30, carrying out defect detection on the reinforcing sheet to be detected by adopting the defect detection parameters on the premise of ensuring the same detection parameters as those of step S20, and obtaining a detection waveform diagram of the reinforcing sheet to be detected; if the interfacial wave in the detected waveform is higher than 80% and the bottom wave is lower than 40%, the bonding defect is considered to exist, and step S40 is performed.
And S40, comparing the detection waveform diagram with the detection waveform reference diagram, and performing qualitative and positioning on the bonding defect of the reinforcing sheet to be detected.
It can be seen that the detection method described in the present application comprises the following steps: preparing a reference block; the reference block comprises an artificial defect, and the artificial defect adopts polytetrafluoroethylene as a raw material; performing defect detection on the reference test block by adopting ultrasonic detection equipment to obtain a detection waveform reference diagram and defect detection parameters of the reference test block; performing defect detection on the reinforcing sheet to be detected by adopting the defect detection parameters to obtain a detection waveform diagram of the reinforcing sheet to be detected; comparing the detection waveform diagram with the detection waveform reference diagram, and performing qualitative and positioning on the bonding defect of the reinforcing sheet to be detected. Because in actual operation, when reinforcing the aircraft structure, the complexity of reinforcing structure leads to, reinforcing structure's inside defect is difficult to be examined to influence the safety in utilization aircraft, and this application adopts polytetrafluoroethylene as the raw and other materials of artificial defect, polytetrafluoroethylene's acoustic characteristic is similar with the air, can reduce the debonding and layering type defect to the highest degree, can be better simulate layering (air bed) defect, can place it in the composite material interlaminar, between composite material and the glued membrane, between glued membrane and the metal aluminum plate etc. all positions that can produce the defect, thereby simulate better reduction debonding and layering type defect, and then effectually detect composite material reinforcing plate's bonding quality.
The foregoing description is only of the preferred embodiments of the present application, and is not intended to limit the scope of the claims, and all equivalent structures or equivalent processes using the descriptions and drawings of the present application, or direct or indirect application in other related technical fields are included in the scope of the claims of the present application.
Claims (11)
1. The method for detecting the bonding defect of the reinforcing sheet is characterized by comprising the following steps of:
preparing a reference block; the reference block comprises an artificial defect, and the artificial defect adopts polytetrafluoroethylene as a raw material;
performing defect detection on the reference test block by adopting ultrasonic detection equipment to obtain a detection waveform reference diagram and defect detection parameters of the reference test block;
performing defect detection on the reinforcing sheet to be detected by adopting the defect detection parameters to obtain a detection waveform diagram of the reinforcing sheet to be detected;
comparing the detection waveform diagram with the detection waveform reference diagram, and performing qualitative and positioning on the bonding defect of the reinforcing sheet to be detected.
2. The method for detecting bonding defects of reinforcing sheets according to claim 1, wherein the structure and the material of the reference block are the same as those of the reinforcing sheet to be detected.
3. The method for detecting an adhesion defect of a reinforcing sheet according to claim 1, wherein the artificial defect comprises: defect No. 1, defect No. 2, defect No. 3, defect No. 4, defect No. 5, defect No. 6, defect No. 7, defect No. 8, defect No. 9, defect No. 10, defect No. 11, and defect No. 12;
wherein the defect No. 1 and the defect No. 2 are arranged between the upper surface layers of the reference block;
the defect No. 3 and the defect No. 4 are arranged between the middle layers of the reference blocks;
the defect No. 5 and the defect No. 6 are arranged between the lower surface layers of the reference blocks;
the defect No. 7 and the defect No. 8 are arranged between the adhesive films of the reference test block;
the defect No. 9 and the defect No. 10 are arranged between the skin of the reference block and the adhesive film;
and the defect 11 and the defect 12 are arranged between the metal layers of the reference block.
4. The method according to claim 3, wherein the defects 1, 3, 5, 7, 9 and 11 are check parameter defects, and the sizes are all
5. The method for detecting adhesion defects of reinforcing sheets according to claim 4, wherein the verification parameter is absentThe sizes of the notches are all
6. The method according to claim 3, wherein the defects No. 2, no. 4, no. 6, no. 8, no. 10 and No. 12 are test defects, and the sizes are all
7. The method for detecting adhesion defects of a reinforcing sheet according to claim 6, wherein the sizes of the inspection parameter defects are all
8. The method for detecting bonding defects of reinforcing sheets according to claim 3, wherein the step of performing defect detection on the reference block by using ultrasonic detection equipment to obtain a reference image of a detection waveform of the reference block and defect detection parameters comprises:
performing sensitivity verification on the ultrasonic detection equipment based on the first artificial defect;
and after the verification is finished, detecting the position and the category of the reference block based on the second artificial defect, and obtaining a detection waveform reference diagram and defect detection parameters of the reference block.
9. The method of claim 8, wherein the performing sensitivity verification on the ultrasonic inspection device based on the first artificial defect comprises:
performing sensitivity verification on the ultrasonic detection equipment based on the first artificial defect to obtain waveform display of a good area and a defective area; the amplitude of the excellent area and the defect area is 10dB-15dB.
10. The method for detecting bonding defects of reinforcing sheets according to claim 9, wherein said performing sensitivity verification on the ultrasonic inspection apparatus based on the first artificial defect to obtain waveform display of a good area and a defective area comprises:
detecting the first artificial defect of a reference block by adopting ultrasonic detection equipment, placing a probe of the ultrasonic detection equipment in a good region of the reference block, adjusting detection parameters of the ultrasonic detection equipment to enable incident waves and multiple bottom waves to appear in a display screen of the ultrasonic detection equipment, and adjusting the amplitude of the primary bottom waves to 80% to obtain waveform display of the good region;
the detection parameters are kept unchanged, and a probe of the ultrasonic detection equipment is placed at an artificial defect of a reference block to be detected, so that waveform display of a defect area is obtained; in the waveform display of the defect area, no bottom wave exists and the interface wave is higher than 80%.
11. The method for detecting bonding defects of a reinforcing sheet according to claim 1, wherein the defect detection of the reinforcing sheet to be detected using the defect detection parameters to obtain a detection waveform of the reinforcing sheet to be detected comprises:
performing defect detection on the reinforcing sheet to be detected by adopting the defect detection parameters to obtain a detection waveform diagram of the reinforcing sheet to be detected;
if the interfacial wave in the detection waveform diagram is higher than 80% and the bottom wave is lower than 40%, the bonding defect is considered to exist.
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| CN202211112604.6A CN116026927A (en) | 2022-09-14 | 2022-09-14 | Method for detecting bonding defect of reinforcing sheet |
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| CN202211112604.6A CN116026927A (en) | 2022-09-14 | 2022-09-14 | Method for detecting bonding defect of reinforcing sheet |
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