CN212060062U - Ultrasonic focusing probe for in-situ detection of composite material of airplane - Google Patents
Ultrasonic focusing probe for in-situ detection of composite material of airplane Download PDFInfo
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- CN212060062U CN212060062U CN202020810639.7U CN202020810639U CN212060062U CN 212060062 U CN212060062 U CN 212060062U CN 202020810639 U CN202020810639 U CN 202020810639U CN 212060062 U CN212060062 U CN 212060062U
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Abstract
The utility model relates to an ultrasonic focusing probe for aircraft combined material normal position detects belongs to aviation maintenance guarantee technical field for satisfy the ultrasonic testing needs to different thickness aircraft fiber reinforced composite part. The ultrasonic focusing probe is connected into a whole by an electric connector, an ultrasonic probe, a water film sleeve and an outer cylinder through threads in sequence; ultrasonic waves are emitted by an ultrasonic straight probe in the ultrasonic probe, the ultrasonic beams are focused through an organic glass concave lens, and water in the water film sleeve is used as an acoustic transmission medium to transmit the focused ultrasonic beams to a detected object. The utility model discloses an ultrasonic focusing probe, preferred water forms the flexible contact position after filling water through rubber film as penetrating sound medium and coupling medium, adapts to the requirement that the different camber surface of aircraft combined material part detected, solves because of the bad problem that leads to detectivity to descend of camber change and coupling, improves the damage relevance ratio.
Description
Technical Field
The utility model relates to an aviation maintenance support technical field, concretely relates to ultrasonic focusing probe that is used for different thickness aircraft fibre reinforced composite part ultrasonic testing.
Background
At present, in the external field in-situ ultrasonic detection technology for airplane fiber reinforced composite parts at home and abroad, a contact pulse reflection method is mainly adopted, and an ultrasonic probe with an organic glass delay block is used for scanning an object to be detected. The majority of aircraft composite components are of variable cross-sectional thickness, and the composite component surfaces bear curvatures that differ at different locations. The plexiglas retardation block is a solid material whose surface curvature is fixed. In the actual scanning, on one hand, the coupling state between the organic glass delay block of the ultrasonic probe and the surface of the composite material part of the airplane can be changed due to different surface curvatures, and the penetration of ultrasonic energy and the stability of detection sensitivity are directly influenced; on the other hand, the size of the organic glass delay block is fixed, so that the focus position of the ultrasonic beam is relatively fixed, and the focus position of the ultrasonic beam cannot be correspondingly adjusted according to the thickness change of the detected object. There is therefore a need for improvements to existing apparatus to suit the needs of the user.
SUMMERY OF THE UTILITY MODEL
The utility model aims to overcome the not enough of prior art, provide an ultrasonic focusing probe for aircraft combined material normal position detects.
In order to solve the technical problem, the technical scheme of the utility model as follows:
an ultrasonic focusing probe for in-situ detection of composite materials of an airplane is characterized by comprising an electric connector, an ultrasonic probe, a water film sleeve and an outer cylinder; the electric connector, the ultrasonic probe, the water film sleeve and the outer cylinder are sequentially connected together, the interior of the water film sleeve is filled with a transparent liquid medium, and the bottom end of the water film sleeve is paved with a flexible sound-transmitting film; and the axial directions of the electric connector, the ultrasonic probe, the water film sleeve and the outer cylinder are respectively provided with a shaft hole.
Preferably, the ultrasonic probe comprises a concave lens, a piezoelectric wafer and a probe shell, wherein the concave lens and the piezoelectric wafer are positioned in the probe shell, and the plane of the concave lens is attached to the piezoelectric wafer.
Preferably, the lower part of the probe shell is provided with external threads.
Preferably, the water film sleeve comprises a water blocking cylinder and a cylinder, the lower end of the cylinder is connected with the water blocking cylinder, and the sound transmission film is arranged at the bottom end of the water blocking cylinder.
Preferably, the water blocking cylinder is made of organic glass, and at least one groove is machined in the circumference of the water blocking cylinder.
Preferably, both the inner and outer surfaces of the cylinder are provided with threads; a sealing ring is arranged in the cylinder.
Preferably, the outer cylinder consists of a cylinder I and a cylinder II, and the upper part of the cylinder I is embedded in the cylinder II; and/or the first cylinder is made of organic glass, and/or the second cylinder is made of copper metal.
Preferably, a fixing pin is arranged on the second cylinder, and a hand rope hole is processed on the fixing pin.
The above technical scheme of the utility model at least include following beneficial effect:
(1) the utility model discloses an ultrasonic focusing probe adopts transparent liquid as penetrating acoustic medium and coupling medium, forms flexible contact position behind the flexible penetrating acoustic film of transparent liquid medium oppression, adapts to the requirement that the different camber surfaces of aircraft combined material part detected, solves because of the bad problem that leads to the detectivity to descend of camber change and coupling, improves the damage relevance ratio.
(2) The utility model discloses an ultrasonic focusing probe, relative position accessible rotation threaded connection position between its urceolus and the water film sleeve adjusts, realizes the regulation to the contact distance of water film sleeve and detected object surface, firstly realizes the fine setting to ultrasonic beam focus position through changing relative position, secondly guarantees to sweep the relatively fixed of looking into in-process ultrasonic beam focus position.
Drawings
Fig. 1 is a schematic view of the overall structure of the present invention;
fig. 2 is a schematic structural view of the ultrasonic probe of the present invention;
FIG. 3 is a schematic structural view of the water film sleeve of the present invention;
FIG. 4 is a schematic structural view of the outer barrel of the present invention;
fig. 5 is an overall schematic view of the present invention;
the sequence numbers in the figures illustrate: the ultrasonic probe comprises an electric connector 1, an ultrasonic probe 2, a water film sleeve 3, an outer cylinder 4, a concave lens 2-1, a piezoelectric wafer 2-2, a probe shell 2-3, a water blocking cylinder 3-1, a cylinder 3-2, a sealing ring 3-3, a flexible sound transmission film 3-4, a cylinder I4-1, a cylinder II 4-2, a fixing pin 4-1 and a hand rope hole 4-4.
Detailed Description
Exemplary embodiments of the present disclosure will be described in more detail below with reference to the accompanying drawings. While exemplary embodiments of the present disclosure are shown in the drawings, it should be understood that the present disclosure may be embodied in various forms and should not be limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the scope of the disclosure to those skilled in the art.
As shown in fig. 1, 2, 3, 4 and 5, the present invention includes an electric connector 1, an ultrasonic probe 2, a water film sleeve 3 and an outer cylinder 4; the electric connector 1 is used for connecting a cable, the ultrasonic probe 2 is used for transmitting and receiving ultrasonic waves, the water film sleeve 3 is used for forming a flexible contact part and focusing ultrasonic beams, and the outer cylinder 4 is used for holding an operator and keeping the shape of the flexible contact part during detection.
The electric connector 1, the ultrasonic probe 2, the water film sleeve 3 and the outer cylinder 4 are sequentially combined in a threaded connection mode. The electric connector 1 is arranged above the ultrasonic probe 2, the water film sleeve 3 is arranged below the ultrasonic probe 2, the outer cylinder 4 is arranged outside the water film sleeve 3, the bottom end of the water film sleeve 3 is paved with an elastic bottom cover or cover body, and the water film sleeve 3 is internally provided with a transparent medium. When the detected object is detected, an operator holds the outer cylinder 4, and the lower part of the outer cylinder 4 is in contact with the surface of the detected object.
As a preferable mode, the flexible sound-transmitting film is made of a transparent flexible sound-transmitting film made of a rubber material, a PVC material, a silica gel material, or the like.
The ultrasonic probe 2 comprises a concave lens, a piezoelectric wafer and a probe shell, wherein the concave lens and the piezoelectric wafer are accommodated in the probe shell; the piezoelectric wafer is connected with the concave lens 2-1 in a compression joint mode, specifically, the upper surface of the concave lens 2-1 is a plane and is tightly attached to the piezoelectric wafer 2-2, and the lower surface of the concave lens 2-1 is a concave curved surface. The ultrasonic probe 2 changes the propagation direction of the ultrasonic beam by using the concave lens 2-1, focuses on a certain position in front of the ultrasonic probe 2, improves the propagation direction of the ultrasonic wave, and realizes ultrasonic detection on airplane fiber reinforced composite parts with different thicknesses. The water film sleeve 3 comprises a water blocking cylinder 3-1, a cylinder 3-2 and a sealing ring 3-3, the lower end of the cylinder 3-2 is connected with the water blocking cylinder 3-1, and the axes of the water blocking cylinder 3-1 and the cylinder 3-2 are provided with shaft holes; the water blocking cylinder 3-1 is preferably made of organic glass, and the cylinder 3-2 is preferably made of copper metal. The water-blocking cylinder 3-1 is embedded in the cylinder 3-2 in a gluing mode. Threads are processed on the inner side and the outer side of the cylinder 3-2, a sealing ring 3-3 is arranged inside the end, provided with the internal threads, of the cylinder 3-2, and the material of the sealing ring 3-3 is preferably rubber.
The lower end of a water blocking cylinder 3-1 of the water film sleeve 3 is wrapped with an elastic sound-transmitting film, the water film sleeve 3 and the ultrasonic probe 2 are placed in water during installation, the sound-transmitting film naturally protrudes outwards after the threads are screwed and sealed, a hemispherical flexible contact part is formed, and a transparent liquid medium filled inside the water film sleeve is used as a sound-transmitting medium to enable ultrasonic waves to be transmitted to the protruding part of the sound-transmitting film. 2 grooves are processed outside the water blocking cylinder 3-1 along the circumferential direction of the cylinder, so that rubber bands and the like can be conveniently used for helping to fix the rubber film.
The outer cylinder 4 consists of a first cylinder 4-1 and a second cylinder 4-2, the outer diameter of the first cylinder 4-1 is slightly smaller, and the first cylinder is fixedly arranged at the lower end inside the second cylinder 4-2 in a threaded connection mode. And internal threads are processed at the upper end inside the second cylinder 4-2 to realize threaded connection with the water film sleeve 3. And a through hole which is vertical to the axis of the second barrel 4-2 is designed and processed outside the upper end of the second barrel 4-2. A small fixing pin 4-1 is arranged on the through hole, and after the relative position of the outer cylinder 4 and the water film sleeve 3 is adjusted by rotating, the fixing pin 4-1 is screwed.
The slightly thicker end of the fixing pin is provided with a hand rope hole 4-4, so that an operator can sleeve the hand rope at the wrist during detection, and the ultrasonic focusing probe is prevented from falling and breaking due to fatigue and the like during work.
As the utility model discloses an optimal selection method during the use can brush one deck couplant on the examined sample when detecting the sample, like water, total loss system oil, vary voltage petrol, chemical paste etc. specifically adopts which kind of couplant, confirms according to the nature of examined material. The couplant is used for removing air between the sound-transmitting film and the detected sample and protecting the sound-transmitting film 3-4. The inner cylinder is filled with water as an ultrasonic wave propagation medium, so that ultrasonic waves emitted by the focusing probe can be incident to the sound-transmitting film 3-4 in the water and are generated in the sound-transmitting film 3-4 to be transmitted into a sample to be detected.
The utility model discloses an ultrasonic focusing probe, preferred water forms the flexible contact position after filling water through rubber film as penetrating sound medium and coupling medium, adapts to the requirement that the different camber surface of aircraft combined material part detected, solves because of the bad problem that leads to detectivity to descend of camber change and coupling, improves the damage relevance ratio. The relative position between the outer cylinder 4 and the water film sleeve 3 can be adjusted by rotating the threaded connection part, so that the contact distance between the water film sleeve 3 and the surface of the detected object can be adjusted, the relative position is changed to finely adjust the focus position of the ultrasonic beam, and the focus position of the ultrasonic beam in a sample can be adjusted by relatively fixing the focus position of the ultrasonic beam in the scanning process. To achieve the best detection of this position.
The foregoing is a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, a plurality of improvements and decorations can be made without departing from the principle of the present invention, and these improvements and decorations should also be regarded as the protection scope of the present invention.
Claims (8)
1. An ultrasonic focusing probe for in-situ detection of composite materials of an airplane is characterized by comprising an electric connector, an ultrasonic probe, a water film sleeve and an outer cylinder; the electric connector, the ultrasonic probe, the water film sleeve and the outer cylinder are sequentially connected together, the interior of the water film sleeve is filled with a transparent liquid medium, and the bottom end of the water film sleeve is paved with a flexible sound-transmitting film; and the axial directions of the electric connector, the ultrasonic probe, the water film sleeve and the outer cylinder are respectively provided with a shaft hole.
2. The ultrasonic focusing probe for in-situ detection of composite materials of airplanes according to claim 1, wherein: the ultrasonic probe comprises a concave lens, a piezoelectric wafer and a probe shell, wherein the concave lens and the piezoelectric wafer are positioned in the probe shell, and the plane of the concave lens is attached to the piezoelectric wafer.
3. The ultrasonic focusing probe for in-situ detection of composite materials of airplanes according to claim 2, wherein: and the lower part of the probe shell is provided with an external thread.
4. The ultrasonic focusing probe for in-situ detection of composite materials of airplanes according to claim 1, wherein: the water film sleeve comprises a water blocking cylinder and a cylinder, the lower end of the cylinder is connected with the water blocking cylinder, and the sound transmission film is arranged at the bottom end of the water blocking cylinder.
5. The ultrasonic focusing probe for in-situ detection of composite materials of airplanes according to claim 4, wherein: the water blocking cylinder is made of organic glass, and at least one groove is machined in the circumference of the water blocking cylinder.
6. The ultrasonic focusing probe for in-situ detection of composite materials of airplanes according to claim 4, wherein: threads are arranged on the inner surface and the outer surface of the cylinder; a sealing ring is arranged in the cylinder.
7. The ultrasonic focusing probe for in-situ detection of composite materials of airplanes according to claim 1, wherein: the outer cylinder consists of a cylinder I and a cylinder II, and the upper part of the cylinder I is embedded in the cylinder II; and/or the first cylinder is made of organic glass, and/or the second cylinder is made of copper metal.
8. The ultrasonic focusing probe for in-situ inspection of composite materials of airplanes according to claim 7, wherein: and a fixing pin is arranged on the second cylinder, and a hand rope hole is processed on the fixing pin.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020810639.7U CN212060062U (en) | 2020-05-15 | 2020-05-15 | Ultrasonic focusing probe for in-situ detection of composite material of airplane |
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| CN202020810639.7U CN212060062U (en) | 2020-05-15 | 2020-05-15 | Ultrasonic focusing probe for in-situ detection of composite material of airplane |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112666262A (en) * | 2020-12-04 | 2021-04-16 | 南昌航空大学 | Ultrasonic detection probe for ultrasonic nondestructive detection of laser welding seam of lithium battery shell |
| CN113125565A (en) * | 2021-04-20 | 2021-07-16 | 内蒙古科技大学 | Ultrasonic detection water bag and detection device |
| CN116259302A (en) * | 2023-05-15 | 2023-06-13 | 之江实验室 | Underwater composite material acoustic lens |
-
2020
- 2020-05-15 CN CN202020810639.7U patent/CN212060062U/en active Active
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112666262A (en) * | 2020-12-04 | 2021-04-16 | 南昌航空大学 | Ultrasonic detection probe for ultrasonic nondestructive detection of laser welding seam of lithium battery shell |
| CN112666262B (en) * | 2020-12-04 | 2023-05-09 | 南昌航空大学 | Ultrasonic detection probe for laser welding line ultrasonic nondestructive detection of lithium battery shell |
| CN113125565A (en) * | 2021-04-20 | 2021-07-16 | 内蒙古科技大学 | Ultrasonic detection water bag and detection device |
| CN113125565B (en) * | 2021-04-20 | 2023-09-15 | 内蒙古科技大学 | Ultrasonic detection water bag and detection device |
| CN116259302A (en) * | 2023-05-15 | 2023-06-13 | 之江实验室 | Underwater composite material acoustic lens |
| CN116259302B (en) * | 2023-05-15 | 2023-08-04 | 之江实验室 | Underwater composite material acoustic lens |
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