CN216267734U - Ultrasonic irradiation auxiliary composite material repairing device - Google Patents
Ultrasonic irradiation auxiliary composite material repairing device Download PDFInfo
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- CN216267734U CN216267734U CN202121576638.1U CN202121576638U CN216267734U CN 216267734 U CN216267734 U CN 216267734U CN 202121576638 U CN202121576638 U CN 202121576638U CN 216267734 U CN216267734 U CN 216267734U
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Abstract
The utility model relates to a device for repairing a composite material under the assistance of ultrasonic irradiation, belongs to the technical field of composite material surface treatment, and solves the problems of long curing time and low repairing efficiency when an existing composite material hot patching instrument is used for curing. The ultrasonic irradiation auxiliary composite material repairing device comprises an ultrasonic device and a composite material hot repair instrument, wherein the area to be repaired of the composite material is located in an ultrasonic irradiation area of the ultrasonic device, and the ultrasonic device provides ultrasonic irradiation for the composite material hot repair instrument during repairing of the area to be repaired of the composite material. The ultrasonic device of the ultrasonic irradiation auxiliary composite material repairing device can provide ultrasonic irradiation when the composite material hot patching instrument repairs the to-be-repaired area of the composite material, shortens the curing time and improves the repairing efficiency.
Description
Technical Field
The utility model belongs to the technical field of composite material surface repair, and particularly relates to an ultrasonic irradiation auxiliary composite material repair device.
Background
The advanced resin-based composite material has the advantages of high specific strength, high specific rigidity, strong designability, good fatigue fracture resistance, corrosion resistance, good dimensional stability, capability of realizing structural/functional integration, convenience for large-area integral forming and the like, is rapidly applied to the fields of spacecrafts, airplanes, ships, high-speed trains, automobiles and the like, partially replaces aluminum alloy and steel, and becomes one of the most rapidly developed advanced materials in equipment structural materials. One of the major problems impeding further use of advanced composite materials is the repair of damaged composite structures. The damage form of the composite material is usually manifested as delamination, fiber breakage, holes, etc.
The composite material cementing repair process has the advantages of no formation of new stress concentration, no obvious increase of the structure weight, good fatigue resistance after repair and the like, and is the key point of the research on the composite material structure damage repair technology. At present, the traditional process method is mainly used in the repair of damage and defects of composite materials of equipment such as airplanes and the like in China, namely, mechanical polishing processing and pretreatment are adopted, then prepreg sticking and packaging are carried out by adopting a patching or patching method, and finally a composite material hot patching instrument is adopted for heating and curing. When the existing composite material hot patching instrument is used for curing, the curing time is long, and the repairing efficiency is low; and the mechanical excavation method is adopted for excavation, so that secondary damage is easily caused to the surface of the composite material, certain damage is caused to the repaired strength, and the interface bonding strength of the repaired composite material is low.
SUMMERY OF THE UTILITY MODEL
In view of the above analysis, the present invention provides an apparatus for repairing a composite material with the assistance of ultrasonic irradiation, which can solve at least one of the following technical problems: (1) when the existing composite material hot patching instrument is used for curing, the curing time is long, and the repairing efficiency is low; (2) the mechanical excavation method is easy to cause secondary damage to the surface of the composite material, certain damage is caused to the repaired strength, and the repaired composite material is low in interface bonding strength.
In order to solve the problems, the technical scheme adopted by the utility model is as follows:
the utility model provides an ultrasonic irradiation auxiliary composite material repairing device which comprises an ultrasonic device and a composite material hot repair instrument, wherein a to-be-repaired area of a composite material is located in an ultrasonic irradiation area of the ultrasonic device, and the ultrasonic device provides ultrasonic irradiation for the composite material hot repair instrument when repairing the to-be-repaired area of the composite material.
Further, the ultrasonic device comprises an ultrasonic controller and an ultrasonic transducer.
Further, the number of the ultrasonic transducers is multiple.
Furthermore, the ultrasonic transducer adopts a longitudinal wave probe, the power of the probe is 100W, and the frequency is 28 KHz.
Furthermore, the ultrasonic irradiation assisted composite material repairing device further comprises a laser, and the laser can emit ultraviolet laser and is used for removing the mechanical damage layer of the composite material.
Further, the composite material hot patching instrument comprises a display unit, a control unit and a vacuumizing device; the control unit comprises a temperature control unit, a vacuum control unit and an ultrasonic control unit.
Furthermore, the temperature control unit comprises a temperature measurement component and a heating controller.
Further, the vacuum control unit includes a vacuum pressure sensor.
Furthermore, the vacuum pumping device comprises a vacuum nozzle, a vacuum meter, a vacuum pump, a vacuum bag, a vacuum pumping hose and a vacuum pumping connector;
the vacuum bag is communicated with the vacuumizing connector in a sealing way, and the vacuumizing connector is connected with the vacuum pump through a vacuumizing hose.
Further, the ultrasonic controller is connected with the ultrasonic control unit, and the ultrasonic controller performs ultrasonic application and time control according to the data instruction of the ultrasonic control unit.
Furthermore, the ultrasonic irradiation assisted composite material repairing device also comprises demoulding cloth, a heating blanket and an air-permeable felt; the demolding cloth, the heating blanket and the breathable felt are used for packaging the area to be repaired of the composite material.
Compared with the prior art, the utility model can realize at least one of the following beneficial effects:
(1) the ultrasonic irradiation assisted composite material repairing device comprises an ultrasonic device and a composite material hot repair instrument, wherein the ultrasonic device can provide ultrasonic irradiation when the composite material hot repair instrument repairs a to-be-repaired area of a composite material, the ultrasonic irradiation acts in liquid resin, bubbles can be broken, high temperature and high pressure are generated at the same time, a uniform blending system is achieved, the viscosity of the resin is reduced, the contact angle is reduced, the infiltration performance of the resin and fibers is improved, the bonding strength is improved, and the curing time is shortened (the curing time of the used epoxy system prepreg is reduced from the existing 150min to 130 min).
(2) The ultrasonic irradiation auxiliary composite material repairing device has the advantages that the number of the ultrasonic transducers is multiple, so that the ultrasonic application uniformity can be ensured when the area to be repaired is large, and the action effect of the ultrasonic is further ensured.
(3) The ultrasonic irradiation assisted composite material repairing device also comprises a laser, wherein the laser can emit ultraviolet laser, after the damaged area of the composite material is excavated by adopting a mechanical excavation method, the excavated interface is scanned for many times by adopting the ultraviolet laser, a mechanical damage layer generated by mechanical excavation is removed, internal carbon fibers are exposed, the ultraviolet laser does not damage the carbon fibers, so that an adhesive can be directly contacted with the carbon fibers in the subsequent gluing process, and the gluing effect is improved; and the uniformity of the interface shear strength among the patch, the mother board and the adhesive film of the composite material is better.
In the utility model, the technical schemes can be combined with each other to realize more preferable combination schemes. Additional features and advantages of the utility model will be set forth in the description which follows, and in part will be obvious from the description, or may be learned by practice of the utility model. The objectives and other advantages of the utility model will be realized and attained by the structure particularly pointed out in the written description and drawings.
Drawings
The drawings are only for purposes of illustrating particular embodiments and are not to be construed as limiting the utility model, wherein like reference numerals are used to designate like parts throughout.
FIG. 1 is a schematic structural diagram of an apparatus for ultrasonic irradiation assisted repair of composite materials;
FIG. 2 is a schematic structural view of a composite material to be repaired;
FIG. 3 is a schematic view after packaging;
FIG. 4 is a schematic view of the propagation of ultrasonic waves during the repair process;
reference numerals
1-patching, 2-mother board, 3-adhesive film, 4-area to be repaired, 5-demoulding cloth, 6-heating blanket, 7-air-permeable felt, 8-vacuum bag, 9-vacuum nozzle, 10-vacuum meter, 11-temperature measuring component, 12-computer display, 13-PLC control unit, 14-ultrasonic controller, 15-ultrasonic transducer, 16-vacuum pressure sensor, 17-vacuum pump, 18-heating controller and 19-vacuumizing connector.
Detailed Description
The preferred embodiments of the present invention will now be described in detail with reference to the accompanying drawings, which form a part hereof, and which together with the embodiments of the utility model serve to explain the principles of the utility model and not to limit its scope.
In the description of the embodiments of the present invention, it should be noted that, unless otherwise explicitly stated or limited, the term "connected" should be interpreted broadly, and may be, for example, a fixed connection, a detachable connection, an integrated connection, a mechanical connection, an electrical connection, a direct connection, or an indirect connection via an intermediate medium. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.
At present, the structural damage of the composite material is mostly repaired by adopting a glue joint repairing process, the glue joint repairing process comprises 2 repairing modes of patching and patching, for example, patching repair is carried out, the damaged part is firstly dug out in the patching repair, and then glue films and patches are sequentially pasted for repairing. The repair of the excavation and repair can well restore the pneumatic appearance of the component, basically does not generate repair stress, does not have load eccentricity, and is a commonly adopted repair method in the repair of the composite material structure at present. As shown in fig. 2, which is a schematic structural diagram of a composite material to be repaired, an adhesive film 3 is located between a patch 1 and a mother board 2 of the composite material, and the adhesive film 3 generally bears shear and transverse tension and compression loads, and the failure modes are peel failure and shear failure. The patching repair is expected to exert the bearing capacity of the mother board 2, the adhesive film 3 and the patch 1, so that the overall performance of the repair structure is recovered to the maximum extent. In the repairing process, the bonding strength among the mother board 2, the adhesive film 3 and the patch 1 directly influences the whole repairing effect. At present, the damaged part of the composite material structure is generally machined into a conical slope with a certain length-thickness ratio by a mechanical method, secondary damage is easily caused to the surface of the composite material in the process, and certain damage is also caused to the repaired strength; at present, a composite material hot-repair instrument is directly adopted to repair in the bonding repair process, and when the existing composite material hot-repair instrument is cured, the curing time is long, and the repair efficiency is low.
Example 1
The embodiment provides a composite material device for ultrasonic irradiation assisted repair, as shown in fig. 1, which includes an ultrasonic device and a composite material hot repair instrument, wherein a to-be-repaired area of a composite material is located in an ultrasonic irradiation area of the ultrasonic device, and the ultrasonic device provides ultrasonic irradiation for the composite material hot repair instrument when repairing the to-be-repaired area of the composite material.
Specifically, the ultrasonic irradiation assisted composite material repairing device further comprises a laser, the laser can emit ultraviolet laser, after the damaged area of the composite material is excavated by a mechanical excavation method, the excavated interface is scanned for multiple times by the ultraviolet laser, and a mechanical damage layer generated by mechanical excavation is removed.
Specifically, the ultrasonic device includes an ultrasonic controller 14 and an ultrasonic transducer 15.
Specifically, the number of the ultrasonic transducers 15 is controlled to be plural, for example, 2, in consideration that the ultrasonic application of the single ultrasonic transducer 15 may be uneven when the area to be repaired of the composite material is large.
Specifically, the ultrasonic transducer 15 uses a longitudinal wave probe with a probe power of 100W and a frequency of 28 KHz.
Specifically, the composite material hot patching instrument comprises a display unit, a control unit and a vacuumizing device; the control unit comprises a temperature control unit, a vacuum control unit and an ultrasonic control unit.
Specifically, the temperature control unit includes a temperature measuring assembly 11 and a heating controller 18.
Specifically, the vacuum control unit includes a vacuum pressure sensor 16.
Specifically, the display unit may be a computer monitor 12.
Specifically, the control unit may be a PLC control unit 13.
Specifically, the vacuum pumping device comprises a vacuum nozzle 9, a vacuum meter 10, a vacuum pump 17, a vacuum bag 8, a vacuum pumping hose and a vacuum pumping joint 19; the vacuum bag 8 is hermetically communicated with a vacuumizing connector 19, and the vacuumizing connector 19 is connected with a vacuum pump 17 through a vacuumizing hose; the PLC control unit 13 can realize the following functions: controlling heating temperature and heating time; vacuumizing and controlling the vacuum degree; ultrasonic waves are applied and time control is performed.
Specifically, the PLC control unit 13 directs the vacuum pumping device to perform vacuum pumping and vacuum degree control according to the detection data of the vacuum pressure sensor 16; the PLC control unit 13 guides the heating controller 18 to work according to the detection data of the temperature measuring component 11.
Specifically, the ultrasonic controller 14 is connected to an ultrasonic control unit of the PLC control unit 13, and the ultrasonic controller 14 performs ultrasonic application and time control according to a data command of the ultrasonic control unit.
Specifically, the PLC control unit 13 further includes a current sensor.
Specifically, the composite material hot repair instrument further comprises a demolding cloth 5, a heating blanket 6 and an air-permeable felt 7, wherein the demolding cloth 5, the heating blanket 6 and the air-permeable felt 7 are used for packaging the area to be repaired of the composite material.
Specifically, the temperature measuring assembly 11 includes a plurality of thermocouples.
When the ultrasonic irradiation assisted composite material repairing device is used for repairing composite materials, the method for repairing the composite materials comprises the following steps: removing an interface damage part generated by excavating a damage part of the composite material by adopting laser; when the prepreg is bonded and repaired, ultrasonic irradiation is adopted in the curing stage.
Compared with the prior art, the ultrasonic irradiation auxiliary composite material repairing device comprises an ultrasonic device and a composite material hot repair instrument, wherein the ultrasonic device can provide ultrasonic irradiation when the composite material hot repair instrument repairs a to-be-repaired area of a composite material, the ultrasonic irradiation acts on liquid resin to break bubbles, and simultaneously generates high temperature and high pressure, so that a uniform blending system is achieved, the viscosity of the resin is reduced, the contact angle is reduced, the infiltration performance of the resin and fibers is improved, the bonding strength is improved, and the curing time is shortened (the curing time of the prepreg of the used epoxy system is reduced from the existing 150min to 130 min).
The ultrasonic irradiation auxiliary composite material repairing device has the advantages that the number of the ultrasonic transducers is multiple, so that the ultrasonic application uniformity can be ensured when the area to be repaired is large, and the action effect of the ultrasonic is further ensured.
The ultrasonic irradiation auxiliary repair composite material device also comprises a laser, wherein the laser can emit ultraviolet laser, after the damaged area of the composite material is excavated by adopting a mechanical excavation method, the excavated interface is scanned for many times by adopting the ultraviolet laser, a mechanical damage layer generated by mechanical excavation is removed, the internal carbon fiber is exposed, and the ultraviolet laser does not damage the carbon fiber, so that an adhesive can be directly contacted with the carbon fiber in the subsequent gluing process, and the gluing effect is improved. And the curing time can be shortened, for example, the curing time of the prepreg adopting an epoxy system is reduced from 150min to 130 min.
The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any changes or substitutions that can be easily conceived by those skilled in the art within the technical scope of the present invention are included in the scope of the present invention.
Claims (10)
1. The ultrasonic irradiation auxiliary composite material repairing device is characterized by comprising an ultrasonic device and a composite material hot patching instrument;
the composite material repair area is located in an ultrasonic irradiation area of the ultrasonic device, and the ultrasonic device provides ultrasonic irradiation for the composite material hot repair instrument when repairing the composite material repair area.
2. An ultrasonic irradiation assisted composite repair apparatus according to claim 1, characterised in that the ultrasonic apparatus comprises an ultrasonic controller (14) and an ultrasonic transducer (15).
3. An ultrasonic irradiation assisted composite repair apparatus according to claim 2, wherein the number of ultrasonic transducers (15) is plural.
4. The ultrasonic irradiation-assisted composite repair device according to claim 2, wherein the ultrasonic transducer (15) adopts a longitudinal wave probe with a probe power of 100W and a frequency of 28 KHz.
5. The ultrasonic irradiation assisted repair composite device of claim 1, further comprising a laser capable of emitting ultraviolet laser light for removing a mechanically damaged layer of composite material.
6. The ultrasonic irradiation assisted composite repair apparatus of claim 2, wherein the composite hot-repair instrument comprises a display unit, a control unit and a vacuum-pumping device; the control unit comprises a temperature control unit, a vacuum control unit and an ultrasonic control unit.
7. An ultrasonic irradiation assisted composite repair apparatus as claimed in claim 6, characterised in that the temperature control unit comprises a temperature measurement assembly (11) and a heating controller (18).
8. The ultrasonic irradiation assisted repair composite device according to claim 6, wherein the evacuation device comprises a vacuum nozzle (9), a vacuum gauge (10), a vacuum pump (17), a vacuum bag (8) and an evacuation hose and an evacuation connector (19);
the vacuum bag (8) is communicated with a vacuum-pumping connector (19) in a sealing way, and the vacuum-pumping connector (19) is connected with a vacuum pump (17) through a vacuum-pumping hose.
9. The ultrasonic irradiation assisted composite repair device according to claim 8, wherein the ultrasonic controller (14) is connected with an ultrasonic control unit, and the ultrasonic controller (14) performs ultrasonic application and time control according to data instructions of the ultrasonic control unit.
10. The ultrasonic irradiation assisted repair composite device according to claim 1, further comprising a release cloth (5), a heating blanket (6) and an air-permeable felt (7);
the demolding cloth (5), the heating blanket (6) and the air-permeable felt (7) are used for encapsulating the area to be repaired of the composite material.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121576638.1U CN216267734U (en) | 2021-07-12 | 2021-07-12 | Ultrasonic irradiation auxiliary composite material repairing device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121576638.1U CN216267734U (en) | 2021-07-12 | 2021-07-12 | Ultrasonic irradiation auxiliary composite material repairing device |
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| Publication Number | Publication Date |
|---|---|
| CN216267734U true CN216267734U (en) | 2022-04-12 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202121576638.1U Active CN216267734U (en) | 2021-07-12 | 2021-07-12 | Ultrasonic irradiation auxiliary composite material repairing device |
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| CN (1) | CN216267734U (en) |
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2021
- 2021-07-12 CN CN202121576638.1U patent/CN216267734U/en active Active
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