阅读说明：本技术 用于复合材料机匣检测的多工位超声穿透法自动扫描系统 (Multi-station ultrasonic penetration method automatic scanning system for detecting composite material case ) 是由 刘菲菲 刘松平 罗云烽 傅天航 杨玉森 李乐刚 于 2021-09-18 设计创作，主要内容包括：本发明涉及一种用于复合材料机匣检测的多工位超声穿透法自动扫描系统,每个多轴扫描机构通过对应的C形工装与对应的换能器连接,超声单元用于通过换能器发射宽带窄脉冲超声波并接收复合材料机匣的透射宽带窄脉冲超声波,控制单元用于控制对应的多轴扫描机构并获取对应的两个换能器的扫描位置信号,成像单元用于将接收到的透射宽带窄脉冲超声波及扫描位置信号进行重构以实现超声检测结果的成像和分析；柔性工作台用于放置复合材料机匣,水耦合单元用于为每个换能器与复合材料机匣之间提供水耦合。该用于复合材料机匣检测的多工位超声穿透法自动扫描系统的目的是解决复合材料机匣无损检测的准确性、可靠性及检测效率较低的问题。(The invention relates to a multi-station ultrasonic penetration method automatic scanning system for detecting a composite material casing, wherein each multi-axis scanning mechanism is connected with a corresponding transducer through a corresponding C-shaped tool, an ultrasonic unit is used for transmitting broadband narrow pulse ultrasonic waves and receiving the transmission broadband narrow pulse ultrasonic waves of the composite material casing through the transducer, a control unit is used for controlling the corresponding multi-axis scanning mechanisms and acquiring scanning position signals of the two corresponding transducers, and an imaging unit is used for reconstructing the received transmission broadband narrow pulse ultrasonic waves and the scanning position signals to realize imaging and analysis of ultrasonic detection results; the flexible workbench is used for placing the composite material casing, and the water coupling unit is used for providing water coupling between each transducer and the composite material casing. The multi-station ultrasonic penetration method automatic scanning system for detecting the composite material case aims to solve the problems of low accuracy, reliability and detection efficiency of nondestructive detection of the composite material case.)

1. A multi-station ultrasonic penetration method automatic scanning system for composite material casing detection is characterized by comprising a multi-shaft scanning mechanism (1), a control unit (2), an ultrasonic unit (3), an imaging unit (4), a flexible workbench (5), a transducer (6), a C-shaped tool (7) and a water coupling unit (8);

the number of the multi-axis scanning mechanism (1), the number of the control unit (2), the number of the transducers (6) and the number of the C-shaped tools (7) are at least two, and the transducers (6) are arranged on two sides of the opening end of each C-shaped tool (7); two transducers on the same C-shaped tool (7) are respectively positioned on the inner side and the outer side of the composite material casing (100), one transducer is used for transmitting broadband narrow-pulse ultrasonic waves, and the other transducer is used for receiving the broadband narrow-pulse ultrasonic waves;

each multi-axis scanning mechanism (1) is connected with a corresponding transducer (6) through a corresponding C-shaped tool (7), the ultrasonic unit (3) is used for transmitting broadband narrow-pulse ultrasonic waves through the transducers (6) and receiving the transmission broadband narrow-pulse ultrasonic waves of the composite material casing (100), each control unit (2) is used for controlling the corresponding multi-axis scanning mechanism (1) and acquiring scanning position signals of the corresponding two transducers (6), and the imaging unit (4) is used for reconstructing the received transmission broadband narrow-pulse ultrasonic waves and the scanning position signals to realize imaging and analysis of ultrasonic detection results;

the flexible workbench (5) is used for placing the composite material casing (100), and the water coupling unit (8) is used for providing water coupling between each transducer (6) and the composite material casing (100).

2. The multi-station sonotrode automatic scanning system for composite casing inspection of claim 1, characterized in that said flexible table (5) comprises a water return tray (501), a parts support plate (502), a lifting rod (503), a rotation shaft (504), a rotation motor (505), a support chassis (506), a bracket (507), a lifting motor (508), a transmission shaft (509), a gear assembly (510) and a connection piece (511);

the part supporting plate (502) is arranged on the water return plate (501) and used for placing the composite material casing (100), the water return plate (501) is arranged on the supporting chassis (506), the part supporting plate (502) is connected with the rotating shaft (504) through the connecting piece (511), the rotating shaft (504) penetrates through the supporting chassis (506) and is connected with the rotating motor (505), the lower end of the supporting chassis (506) is provided with a plurality of gear transmission assemblies (510), each gear transmission assembly (510) is connected with a corresponding lifting rod (503), the lifting motor (508) is connected with each gear transmission assembly (510) through the transmission shaft (509), and the lifting motor (508) and the gear transmission assemblies (510) are all arranged on the support (507).

3. The multi-station sonotrode automatic scanning system for composite casing inspection according to claim 2, characterized in that said flexible table (5) further comprises a protective hood (512), said protective hood (512) being housed to said support (507).

4. The multistation ultrasonic penetration method automatic scanning system for detecting the composite material casing according to claim 2, wherein the flexible working table (5) further comprises a roller (513) and a self-locking device (514), the bottom of the support (507) is provided with a plurality of rollers (513), and each roller (513) is self-locked through the corresponding self-locking device (514).

5. The multistation ultrasonic penetration method automatic scanning system for detecting the composite material casing according to claim 1, wherein the transducer (6) comprises a shell (601), and a piezoelectric unit (602), a water inlet (603), a water spraying cavity (604) and a water outlet (605) which are arranged in the shell (601), two ends of the water spraying cavity (604) are respectively communicated with the water inlet (603) and the water outlet (605), and the piezoelectric unit (602) is arranged at one end of the water spraying cavity (604) far away from the water outlet (605).

6. The multi-station ultrasonic penetration method automatic scanning system for composite material casing detection according to claim 1, wherein the C-shaped tool (7) comprises a flange connector (701), a cross rod (702) and a connector (703), the flange connector (701) is connected with the cross rod (702), two ends of the cross rod (702) are connected with one end of the connector (702), and the other end of the connector (702) is used for installing the transducer (6).

7. The multi-station sonotrode automatic scanning system for composite casing inspection of claim 6, characterized in that said connector (703) comprises a first connecting rod (7031), a second connecting rod (7032), a connecting sleeve (7033) and a mounting seat (7034);

the first end of first connecting rod (7031) passes through adapter sleeve (7033) with the first end of second connecting rod (7032) is connected, the second end of first connecting rod (7031) with horizontal pole (702) are connected, the second end of second connecting rod (7032) with mount pad (7034) are connected, mount pad (7034) are used for installing transducer (6).

8. The system for the multi-station sonotrode automatic scanning of composite casing inspection according to claim 1, characterized in that said multi-axis scanning mechanism (1) is a robot with multi-axis freedom.

9. The system for the multistation sonography automatic scanning of the inspection of composite casings according to claim 1, characterized in that the ultrasound unit (3) is a multichannel ultrasound unit.

10. The system for multistation sonography automatic scanning of composite casing inspection according to claim 1, characterized in that the transducer (6) is a composite broadband narrow pulse ultrasound transducer.

Technical Field

The invention relates to the technical field of nondestructive testing, in particular to a multi-station ultrasonic penetration method automatic scanning system for composite material casing testing.

Background

The composite material has excellent specific performance and is continuously applied in the field of aerospace. For quality and safety reasons, quality detection, internal defect characterization, evaluation and nondestructive testing of composite parts are very important, and especially quality control and automatic nondestructive testing of composite parts in mass production are very important. The composite material casing is an important composite material part which is installed in batches in the aeroengine at present, the ultrasonic is a main nondestructive detection method of the composite material casing at present, for manual detection, the ultrasonic reflection method is mainly adopted for detection at present, manual scanning detection is mainly adopted, and a detection result is mainly detected by an ultrasonic echo signal displayed by a detection personnel through a screen of a detection instrument. In the batch manufacturing stage of the composite material case, it is urgently needed to realize the automatic scanning detection of the composite material case by adopting a special ultrasonic automatic scanning detection technology, detection equipment, a detection method and the like, and the efficiency of the automatic scanning detection of the composite material case is also urgently needed to be improved.

The manual ultrasonic detection method is a main method of the composite material casing adopted at present, and has the following defects: the detection result is easily affected by the factors in charge of detection personnel, and the detection omission is easily caused, so that the detection reliability is reduced, and the nondestructive detection requirement of the composite material cartridge receiver in the batch production process is difficult to meet. As an improvement, an ultrasonic automatic scanning detection method is adopted, but the main defects of the device which can be used for ultrasonic automatic scanning detection of the composite material casing at present are as follows: only a single ultrasonic detection station is considered, the detection efficiency is low, the workbench is in a rigid design and lacks flexibility, and the ultrasonic automatic scanning detection of the composite material casings with different heights is difficult to realize, so that the ultrasonic automatic scanning detection of the composite material casings in the batch production process is not facilitated.

Therefore, the inventor provides a multi-station ultrasonic penetration automatic scanning system for detecting a composite material casing.

Disclosure of Invention

(1) Technical problem to be solved

The embodiment of the invention provides a multi-station ultrasonic penetration method automatic scanning system for detecting a composite material casing, and solves the technical problems of low accuracy, reliability and detection efficiency of nondestructive detection of the composite material casing.

(2) Technical scheme

The invention provides a multi-station ultrasonic penetration method automatic scanning system for detecting a composite material casing, which comprises a multi-shaft scanning mechanism, a control unit, an ultrasonic unit, an imaging unit, a flexible workbench, a transducer, a C-shaped tool and a water coupling unit, wherein the multi-shaft scanning mechanism is connected with the control unit through a water coupling unit;

the number of the multi-axis scanning mechanism, the number of the control unit, the number of the transducers and the number of the C-shaped tools are at least two, and the transducers are arranged on two sides of an opening end of each C-shaped tool; two transducers on the same C-shaped tool are respectively positioned on the inner side and the outer side of the composite material casing, wherein one transducer is used for transmitting broadband narrow-pulse ultrasonic waves, and the other transducer is used for receiving the broadband narrow-pulse ultrasonic waves;

each multi-axis scanning mechanism is connected with a corresponding transducer through a corresponding C-shaped tool, the ultrasonic unit is used for transmitting broadband narrow pulse ultrasonic waves through the transducers and receiving the transmission broadband narrow pulse ultrasonic waves of the composite material casing, each control unit is used for controlling the corresponding multi-axis scanning mechanism and acquiring scanning position signals of the two corresponding transducers, and the imaging unit is used for reconstructing the received transmission broadband narrow pulse ultrasonic waves and the scanning position signals to realize imaging and analysis of ultrasonic detection results;

the flexible workbench is used for placing the composite casing, and the water coupling unit is used for providing water coupling between each transducer and the composite casing.

Furthermore, the flexible workbench comprises a water return disc, a part supporting plate, a lifting rod, a rotating shaft, a rotating motor, a supporting chassis, a bracket, a lifting motor, a transmission shaft, a gear transmission assembly and a connecting piece;

the part backup pad is located on the wet return and be used for placing combined material machine casket, the wet return is located support on the chassis, the part backup pad passes through the connecting piece with the axis of rotation is connected, the axis of rotation wears to locate support the chassis and with the rotating electrical machines is connected, the lower extreme that supports the chassis is equipped with a plurality ofly gear drive subassembly, every gear drive subassembly is connected with the lifter that corresponds, elevator motor passes through the transmission shaft is with every gear drive subassembly is connected, elevator motor and a plurality of gear drive subassembly all installs on the support.

Further, the flexible workbench further comprises a protective cover, and the protective cover is arranged on the support.

Furthermore, the flexible workbench further comprises a plurality of rollers and a self-locking device, the bottom of the support is provided with the rollers, and each roller is self-locked through the corresponding self-locking device.

Furthermore, the energy converter comprises a shell, and a piezoelectric unit, a water inlet, a water spraying cavity and a water outlet which are arranged in the shell, wherein two ends of the water spraying cavity are respectively communicated with the water inlet and the water outlet, and the piezoelectric unit is arranged at one end, far away from the water outlet, of the water spraying cavity.

Further, the C-shaped tool comprises a flange connector, a cross rod and a connector, the flange connector is connected with the cross rod, the two ends of the cross rod are connected with one end of the connector, and the other end of the connector is used for installing the transducer.

Furthermore, the connector comprises a first connecting rod, a second connecting rod, a connecting sleeve and a mounting seat;

the first end of the first connecting rod is connected with the first end of the second connecting rod through the connecting sleeve, the second end of the first connecting rod is connected with the cross rod, the second end of the second connecting rod is connected with the mounting seat, and the mounting seat is used for mounting the transducer.

Further, the multi-axis scanning mechanism is a robot having multi-axis degrees of freedom.

Further, the ultrasound unit is a multi-channel ultrasound unit.

Further, the transducer is a composite material broadband narrow pulse ultrasonic transducer.

(3) Advantageous effects

In summary, the invention utilizes the fact that the broadband ultrasonic pulse sound waves have different acoustic propagation behaviors in the composite material case, the detection efficiency and the automatic detection degree of the composite material case are obviously improved, meanwhile, the invention has good detection resolution and defect detection sensitivity, is more beneficial to improving the ultrasonic detection capability and the detection reliability of the internal defects of the composite material case, and is more suitable for the rapid ultrasonic automatic detection and defect evaluation of the composite material case in the batch production process.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings needed to be used in the embodiments of the present invention will be briefly described below, and it is obvious that the drawings described below are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without creative efforts.

FIG. 1 is a schematic structural diagram of a multi-station ultrasonic penetration automatic scanning system for composite casing inspection according to an embodiment of the present invention;

FIG. 2 is an elevation view of a flexible platen in a multi-station ultrasonic reflectometry automatic scanning system for composite casing inspection according to an embodiment of the present invention;

FIG. 3 is a left side view of a flexible platen in a multi-station ultrasonic reflectometry automatic scanning system for composite casing inspection according to an embodiment of the present invention;

FIG. 4 is a cross-sectional view taken along the plane A-A in FIG. 3;

FIG. 5 is a schematic structural diagram of a transducer in a multistation ultrasonic reflectometry automatic scanning system for composite casing inspection according to an embodiment of the present invention;

fig. 6 is a schematic structural diagram of a C-shaped tool in a multi-station ultrasonic reflection automatic scanning system for composite casing inspection according to an embodiment of the present invention.

In the figure:

1-a multi-axis scanning mechanism; 2-a control unit; 3-an ultrasound unit; 4-an imaging unit; 5-a flexible workbench; 501-returning a water disc; 502-part support plate; 503-lifting rod; 504-a rotation axis; 505-a rotating electrical machine; 506-a support chassis; 507-a bracket; 508-a lift motor; 509-a drive shaft; 510-a gear assembly; 511-connectors; 512-protective cover; 513-a roller; 514-self-locking device; 6-a transducer; 601-a housing; 602-a piezoelectric unit; 603-a water inlet; 604-water spray chamber; 605-a water outlet; 7-C-shaped tooling; 701-flange joint; 702-a cross-bar; 703-a connector; 7031-first connecting rod; 7032-second connecting rod; 7033-connecting sleeves; 7034-a mount; 8-a water coupling unit; 100-composite casing.

Detailed Description

The embodiments of the present invention will be described in further detail with reference to the drawings and examples. The following detailed description of the embodiments and the accompanying drawings are provided to illustrate the principles of the invention and are not intended to limit the scope of the invention, i.e., the invention is not limited to the embodiments described, but covers any modifications, alterations, and improvements in the parts, components, and connections without departing from the spirit of the invention.

It should be noted that the embodiments and features of the embodiments in the present application may be combined with each other without conflict. The present application will be described in detail below with reference to the embodiments with reference to the attached drawings.

Fig. 1 is a schematic structural diagram of a multi-station ultrasonic penetration method automatic scanning system for composite material casing detection, provided by an embodiment of the present invention, and includes a multi-axis scanning mechanism 1, a control unit 2, an ultrasonic unit 3, an imaging unit 4, a flexible table 5, a transducer 6, a C-shaped tool 7, and a water coupling unit 8;

the number of the multi-axis scanning mechanism 1, the number of the control unit 2, the number of the transducers 6 and the number of the C-shaped tools 7 are at least two, and the transducers 6 are arranged on two sides of the opening end of each C-shaped tool 7; two transducers on the same C-shaped tool 7 are respectively positioned on the inner side and the outer side of the composite material casing 100, wherein one transducer is used for transmitting broadband narrow-pulse ultrasonic waves, and the other transducer is used for receiving the broadband narrow-pulse ultrasonic waves;

each multi-axis scanning mechanism 1 is connected with a corresponding transducer 6 through a corresponding C-shaped tool 7, each ultrasonic unit 3 is used for transmitting broadband narrow pulse ultrasonic waves through the transducer 6 and receiving the transmission broadband narrow pulse ultrasonic waves of the composite material casing 100, each control unit 2 is used for controlling the corresponding multi-axis scanning mechanism 1 and acquiring scanning position signals of the two corresponding transducers 6, and the imaging unit 4 is used for reconstructing the received transmission broadband narrow pulse ultrasonic waves and the scanning position signals to realize imaging and analysis of ultrasonic detection results;

the flexible table 5 is used for placing the composite casing 100, and the water coupling unit 8 is used for providing water coupling between each transducer 6 and the composite casing 100.

In the above embodiment, taking two multi-axis scanning mechanisms as an example, as shown in fig. 1, the ultrasonic dual-transmission method automatic scanning system includes a first ultrasonic emission method scanning station and a second ultrasonic emission method scanning station, wherein:

1) ultrasonic automatic scanning station composition

The first ultrasonic scanning station and the second ultrasonic scanning station are respectively composed of a multi-axis scanning mechanism 1, a control unit 2, two transducers 6 and a C-shaped tool 7 and are respectively positioned on two sides of the flexible workbench 5;

the transducer arrangement of the first ultrasonic scanning station is acoustically coupled to: one of the two transducers 6 is used for transmitting broadband pulse ultrasonic waves, the other one is used for receiving the broadband pulse ultrasonic waves, the two transducers 6 are respectively positioned at two sides of the composite material casing 100, the two transducers 6 and the composite material casing 100 are coupled by water, and the coupling is provided by a water coupling unit 8 and a flexible workbench 5.

The transducer arrangement and acoustic coupling of the second ultrasonic scanning station are the same as the first ultrasonic scanning station and are not described in detail herein.

2) Transmission and reception of ultrasound

Ultrasonic wave transmission and reception of first ultrasonic scanning station: broad-band pulsed ultrasound is transmitted by the ultrasound unit 3 and the transducer 6 connected thereto, and transmitted broad-band pulsed ultrasound is received by the ultrasound unit 3 and the further transducer 6 connected thereto from the composite material casing 100And vice versa, the use of the term "a" or "an" as used herein,respectively representing transmitted broadband pulsed ultrasoundAmplitude, phase and propagation time;

ultrasonic wave transmission and reception of the second ultrasonic scanning station: broad-band pulsed ultrasound is transmitted by the ultrasound unit 3 and the transducer 6 connected thereto, and transmitted broad-band pulsed ultrasound is received by the ultrasound unit 3 and the further transducer 6 connected thereto from the composite material casing 100And vice versa, the use of the term "a" or "an" as used herein,respectively representing transmitted broadband pulsed ultrasoundAmplitude, phase and propagation time;

are respectively connected by an ultrasonic unit 3Andthe digital signals are converted into digital signals and sent to the imaging unit 4 for imaging display;

3) position signal acquisition

Acquiring a position signal of a first ultrasonic scanning station: scanning position signals of the two transducers 6 are acquired by the control unit 2Here, the first and second liquid crystal display panels are,respectively representing the current coordinate position of the transmitted broadband pulsed ultrasonic wave in the composite material casing 100;

and acquiring a position signal of the second ultrasonic scanning station: scanning position signals of the two transducers 6 are acquired by the control unit 2Here, the first and second liquid crystal display panels are,respectively representing the current coordinate position of the transmitted broadband pulsed ultrasonic wave in the composite material casing 100;

andrespectively sent to the imaging units 4 for imaging display;

4) imaging display

By the pair of imaging units 4Andimaging and analyzing the ultrasonic detection result of the first ultrasonic scanning station for reconstruction and imaging; by the pair of imaging units 4Andand imaging and analyzing the ultrasonic detection result of the second ultrasonic scanning station through reconstruction and imaging.

The flexible workbench 5 adopts two modes of water spraying and water immersion, so that the ultrasonic detection requirements of the composite material casing 100 to be detected at different heights can be met.

Fig. 2-4 are schematic structural diagrams of a flexible workbench in a multi-station ultrasonic reflectometry automatic scanning system for composite material casing inspection according to an embodiment of the present invention, where the flexible workbench 5 may include a water return plate 501, a part support plate 502, a lifting rod 503, a rotating shaft 504, a rotating motor 505, a support chassis 506, a bracket 507, a lifting motor 508, a transmission shaft 509, a gear assembly 510, and a connecting member 511;

the part supporting plate 502 is arranged on the water return plate 501 and used for placing the composite material casing 100, the water return plate 501 is arranged on the supporting chassis 506, the part supporting plate 502 is connected with the rotating shaft 504 through a connecting piece 511, the rotating shaft 504 penetrates through the supporting chassis 506 and is connected with the rotating motor 505, the lower end of the supporting chassis 506 is provided with a plurality of gear transmission components 510, each gear transmission component 510 is connected with the corresponding lifting rod 503, the lifting motor 508 is connected with each gear transmission component 510 through a transmission shaft 509, and the lifting motor 508 and the plurality of gear transmission components 510 are both arranged on the support 507.

In the above embodiment, during the detection, the rotating motor 505 drives the part supporting plate 502 to rotate, so as to drive the composite material casing 100 fixedly supported on the part supporting plate 502 to rotate, thereby realizing the rotational scanning motion of the composite material casing 100, and drives the lifting rod 503 to rise or fall through the forward and reverse motion of the lifting motor 508, thereby realizing the lifting of the supporting chassis 506, thereby realizing the lifting of the composite material casing 100 fixed on the part supporting plate 502, and according to the circumferential coverage detection requirement of the detected composite material casing 100, the rotation of 0-360 ° is performed through the rotating shaft 504 and the rotating motor 505; according to the coverage detection requirement of the detected composite material casing 100 in the height direction, the lifting rod 503 and the lifting motor 508, the transmission shaft 509 and the gear transmission assembly 510 matched with the lifting rod are lifted, so that the detection of the detected composite material casing 100 with different heights is met.

In some alternative embodiments, as shown in fig. 2-4, the flexible table 5 further comprises a shield 512, and the shield 512 is disposed on the support 507. The protective cover 512 is provided to protect the components placed on the support 507.

In some alternative embodiments, as shown in fig. 2 to 4, the flexible workbench 5 further includes a roller 513 and a self-locking device 514, the bottom of the support 507 is provided with a plurality of rollers 513, and each roller 513 is self-locked by the corresponding self-locking device 514. Wherein the rollers 513 and the self-locking devices 514 are arranged to facilitate the free movement and fixed position of the flexible workbench 5.

In some alternative embodiments, as shown in fig. 5, the transducer 6 includes a housing 601, and a piezoelectric unit 602, a water inlet 603, a water spraying cavity 604 and a water outlet 605 which are disposed in the housing 601, two ends of the water spraying cavity 604 are respectively communicated with the water inlet 603 and the water outlet 605, and the piezoelectric unit 602 is disposed at an end of the water spraying cavity 604 far from the water outlet 605. During the scanning detection, the external water supply system supplies water for ultrasonic coupling through the water inlet 603.

In some alternative embodiments, as shown in fig. 6, the C-shaped fixture 7 includes a flange connector 701, a cross bar 702, and a connector 703, the flange connector 701 is connected to the cross bar 702, two ends of the cross bar 702 are connected to one end of the connector 702, and the other end of the connector 702 is used for mounting the transducer 6.

Specifically, the C-shaped fixture 7 is connected to the corresponding multi-axis scanning mechanism 1 through a flange connector 701, and the distance between the two transducers 6 is adjusted through a connector 703.

In some alternative embodiments, as shown in fig. 6, the connector 703 includes a first connecting rod 7031, a second connecting rod 7032, a connecting sleeve 7033, and a mounting seat 7034; the first end of the first connecting rod 7031 is connected to the first end of the second connecting rod 7032 through a connecting sleeve 7033, the second end of the first connecting rod 7031 is connected to the cross bar 702, the second end of the second connecting rod 7032 is connected to an installation base 7034, and the installation base 7034 is used for installing the transducer 6.

Specifically, the transducer 6 is mounted in the mount 7034 and locked by a side locking bolt of the mount 7034.

In some alternative embodiments, the multi-axis scanning mechanism 1 is a robot with multiple axes of freedom. Specifically, the structure can meet the requirements of ultrasonic automatic scanning detection of the composite material casing 100 to be detected with different curved surfaces, and a plurality of groups of multi-axis scanning mechanisms 1 can be arranged according to actual detection requirements, so that more ultrasonic scanning detection stations are constructed, and the automatic scanning detection efficiency of an ultrasonic reflection method is improved.

In some alternative embodiments, the ultrasound unit 3 is a multi-channel ultrasound unit. Wherein the multi-channel ultrasound unit can meet the transmit/receive signal requirements of a plurality of ultrasound transducers.

In some alternative embodiments, the transducer 6 is a composite broadband narrow pulse ultrasound transducer. Specifically, the transducer 6 is designed to adopt a special composite material broadband narrow pulse ultrasonic transducer, the number of channels of the ultrasonic unit 3 and the number of the transducers 6 are matched with the number of multi-axis scanning mechanisms to form a plurality of ultrasonic detection stations, and the high-efficiency detection requirement of the composite material casing is met.

Optionally, the imaging unit 4 is designed by using a dual-workstation configuration, so as to implement the scanning modeling and simulation of the composite material casing 100 to be tested, the display of the testing result, and the defect evaluation.

On the basis of a CUS-21R ultrasonic detection system of the Zhonghang composite material Limited company, a plurality of multi-axis scanning mechanisms are formed, a composite material case is selected, two coupling modes of ultrasonic water spraying and water immersion are respectively adopted, serial double-station ultrasonic penetration method automatic scanning detection is respectively carried out on the composite material case, and an ultrasonic unit in the composite material case is used for acquiring ultrasonic signals in the scanning processAndacquiring position signals using a control unit thereinAndthe imaging unit images and analyzes the detection result of each ultrasonic scanning station, and the result shows that a better actual detection effect is obtained, and the automatic detection degree, the detection efficiency and the reliability of the detection result of the effective composite material casing can be obviously improved.

It should be clear that the embodiments in this specification are described in a progressive manner, and the same or similar parts in the embodiments are referred to each other, and each embodiment focuses on the differences from the other embodiments. The present invention is not limited to the specific steps and structures described above and shown in the drawings. Also, a detailed description of known process techniques is omitted herein for the sake of brevity.

The above are merely examples of the present application and are not intended to limit the present application. Various modifications and alterations to this application will become apparent to those skilled in the art without departing from the scope of this invention. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application should be included in the scope of the claims of the present application.