CN211178779U - State monitoring integrated composite material structure - Google Patents
State monitoring integrated composite material structure Download PDFInfo
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- CN211178779U CN211178779U CN201920672045.1U CN201920672045U CN211178779U CN 211178779 U CN211178779 U CN 211178779U CN 201920672045 U CN201920672045 U CN 201920672045U CN 211178779 U CN211178779 U CN 211178779U
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Abstract
The utility model discloses a state monitoring integrated composite material structure, which comprises an integrated fiber composite material woven layer formed by weaving an integrated fiber structure and a woven layer high polymer material curing structure entering the gap of the integrated fiber composite material woven layer by a dipping attachment method, wherein the integrated fiber composite material woven layer and the woven layer high polymer material curing structure form a single-layer integrated fiber composite material structure; the utility model discloses the inside state change in detection fibre combined material weaving layer that can be accurate to go out signal transmission, avoid complicacy, with high costs nondestructive test process and the real-time condition that realizes the combined material structure of enterprise to detect, with low costs, do not receive electromagnetic interference, can detect the characteristics of the inside change of structure, can form simultaneously and have thicker combined material layer, strengthen whole combined material's mechanical strength greatly.
Description
Technical Field
The utility model belongs to the chemical industry field relates to a combined material structure, concretely relates to state monitoring combined material structure.
Background
Compared with the traditional metal material, the fiber reinforced composite material is increasingly widely applied in the fields of traffic, energy, buildings and the like due to the excellent specific strength, specific rigidity, fatigue resistance, corrosion resistance and designability, taking a boeing aircraft as an example, the specific gravity of a composite material mainly made of a resin-based fiber reinforced composite material in a structural material has rapidly increased from 1% of the boeing 747 in the 70's of the 20 th century to 50% of the present boeing 787, meanwhile, a large amount of the material is also used on the giant fan blade, however, the composite material is very sensitive to damage, and once the damage occurs, the material is very likely to cause great loss, therefore, frequent detection is necessary, but this requires a large amount of manpower and material resources, meanwhile, detection is also very complex, so that it is very necessary to find a more convenient and lower-cost technical scheme.
SUMMERY OF THE UTILITY MODEL
In view of the above, there is a need to overcome at least one of the above-mentioned deficiencies in the prior art.
The utility model provides a state monitoring integrated composite material structure, which comprises an integrated fiber composite material woven layer formed by weaving an integrated fiber structure, wherein the integrated fiber structure comprises a fiber composite material and optical fibers, the optical fibers are compounded into the fiber composite material, and an optical fiber high polymer material coating is attached to the surface of the optical fibers;
and a braided layer high polymer material curing structure entering the gaps of the braided layer of the integrated fiber composite material by a dipping and attaching method, wherein the braided layer high polymer material curing structure is a high polymer material curing structure subjected to vacuum defoaming treatment and normal-temperature pressurizing and curing treatment;
the integrated fiber composite material woven layer and the woven layer high polymer material curing structure form a single-layer integrated fiber composite material structure, the integrated fiber structure is provided with an exposed end exposed out of the integrated fiber composite material structure, and an elastic material layer is arranged outside the exposed end.
The utility model discloses a prefabricated fiber composite and the integrative fibrous structure of optic fibre, use integrative fibrous structure preparation integrative fiber composite weaving layer, optic fibre surface adheres to optic fibre macromolecular material coating, compiles optic fibre the integrative fibrous composite weaving layer of optic fibre carries out weaving layer macromolecular material flooding and adheres to the flow, is right simultaneously optic fibre draws forth and produces mouthful protection, and vacuum deaeration handles, normal atmospheric temperature pressurization solidification handles, forms the integrative fibrous composite of individual layer;
or adhering the high polymer material to the integral fiber composite woven layer or the fiber composite woven layer again or repeatedly on the single-layer integral fiber composite material, heating, pressurizing and curing, and then coating to form a resin packaging layer and a covering layer on the resin packaging layer, so as to form the multilayer state monitoring integral composite material.
Forming an integrated fiber structure by using an optical fiber and a fiber composite material, weaving to form an integrated fiber composite material woven layer, carrying out an impregnation process by using a woven layer high polymer material, wherein the woven layer high polymer material can penetrate into the fibers of the integrated fiber composite material woven layer to form a fiber wrapping structure, and carrying out normal-temperature pressurization and solidification treatment to form a single-layer integrated fiber composite material; or on the basis of a single-layer integrated fiber composite material, a plurality of layers of integrated fiber composite materials can be formed through a multi-layer stacking process including a fiber composite material and a braided layer high polymer material impregnation process.
The utility model can accurately reflect the state change in the fiber composite material woven layer by weaving the optical fiber in the fiber composite material woven layer and forming the optical fiber and the fiber into a whole, and transmits the specific signal through the corresponding sensor, can avoid the complex and expensive nondestructive detection process, can realize the real-time state detection of the composite material structure, has low cost, is not interfered by electromagnetism, can detect the internal change of the structure, meanwhile, through the free combination and bonding of a plurality of layers of integrated fiber composite woven layers or fiber composite woven layers and woven layer high polymer material coatings, if one layer of woven layer high polymer material coating is alternated in sequence, or other modes are combined in sequence, a thicker composite material layer can be formed, the mechanical strength of the whole composite material can be greatly enhanced, and products in more application fields can be formed.
Additionally, according to the utility model discloses a state monitoring integration combined material structure still has following additional technical characterstic:
further, the optical fiber is externally connected with an intelligent optical fiber sensor.
Still further, the fiber sensor is a bragg grating (FBG) based intelligent fiber sensor integration.
Furthermore, the intelligent optical fiber sensor comprises a strain sensor and a grating temperature sensor.
Furthermore, the optical fiber high polymer material coating is in an epoxy resin curing agent or phenolic resin or vinyl resin structure, and the thermosetting resin can basically meet corresponding requirements.
Further, a coupler and a direction controller are preset in the composite material, and the state of the optical fiber which is coded in the fiber composite material braided layer is monitored through the coupler and the direction controller.
Furthermore, the state monitoring integrated composite material also comprises a plurality of polymer film layers, and then resin packaging and covering layer addition are carried out.
Further, the optical fiber polymer material coating is a coating with a mechanical protection function or a coating with an optical reflection function or a coating combining the functions of the two.
Further, the polymer material coating is a thermosetting polymer material coating.
Further, the thermosetting polymer material coating is an epoxy resin or acrylic resin coating.
Furthermore, the surface layer of the exposed optical fiber for outlet protection is coated with an elastic polymer material coating in an attached mode, and the elastic polymer material layer can protect the exposed optical fiber.
Further, optical fibers with the diameters of 250 microns, 170 microns, 160 microns and 125 microns and the surfaces coated with photosensitive epoxy acrylate are implanted into the integrated fiber structure, the optical fibers are reserved at all embedding positions for processing and protecting the optical fibers, and after the optical fibers are embedded into an autoclave for curing, vacuum bags are manufactured to manufacture the composite material
Furthermore, the surface of the optical fiber is coated with a layer of polymer film which can be acrylic film or polyimide film, the thickness of the acrylic film is 60-80 μm, the thickness of the polyimide film is 10-25 μm, the sensitivity of the sensor is affected by the thickness of the coating layer, and the optical fiber cannot be protected by the coating layer which is too thin.
Furthermore, the exposed optical fiber protection sleeve is made of polytetrafluoroethylene materials, the outer diameter of the sleeve is 0.8mm, and the protection sleeve can effectively protect optical fibers in the high and low temperature environment during forming and monitoring.
Further, the fiber composite material is composed of a resin-based composite material prepreg obtained by mixing one or more of fiber materials and one or more of resin materials according to a certain proportion, wherein the fiber materials comprise carbon fibers, glass fibers and aramid fibers, and the resin materials comprise epoxy resin, phenolic resin, vinyl resin or other thermosetting resins.
The utility model also discloses a multilayer structure based on the integrative fiber composite structure of individual layer forms, include the integrative fiber composite structure of individual layer, the outside have multilayer fiber composite structure or integrative fiber composite structure, the inferior outside has the encapsulated layer and the overburden in the outside.
Additional aspects and advantages of the invention will be set forth in part in the description which follows and, in part, will be obvious from the description, or may be learned by practice of the invention.
Drawings
The above and/or additional aspects and advantages of the present invention will become apparent and readily appreciated from the following description of the embodiments, taken in conjunction with the accompanying drawings of which:
fig. 1 is a schematic structural view of the state monitoring integrated composite material of the present invention;
in the figure, 1 is an integrated fiber structure, 2 is an optical fiber, 3 is a braided layer high polymer material, and 4 is a fiber structure.
Detailed Description
The following description of the embodiments is merely exemplary in nature and is in no way intended to limit the invention.
The state monitoring integrated composite structure of the present invention will be described with reference to the accompanying drawings, wherein fig. 1 is a schematic view of the state monitoring integrated composite structure of the present invention.
According to the embodiment of the utility model, the integrated fiber composite material woven layer formed by weaving the integrated fiber structure is included, the integrated fiber structure comprises the fiber composite material and the optical fiber, the optical fiber is compounded into the fiber composite material, and the surface of the optical fiber is adhered with the optical fiber polymer material coating;
and a braided layer high polymer material curing structure entering the gaps of the braided layer of the integrated fiber composite material by a dipping and attaching method, wherein the braided layer high polymer material curing structure is a high polymer material curing structure subjected to vacuum defoaming treatment and normal-temperature pressurizing and curing treatment;
the integrated fiber composite material woven layer and the woven layer high polymer material curing structure form a single-layer integrated fiber composite material structure, the integrated fiber structure is provided with an exposed end exposed out of the integrated fiber composite material structure, and an elastic material layer is arranged outside the exposed end.
Prefabricating a fiber composite material and an optical fiber integrated fiber structure, preparing an integrated fiber composite material woven layer by using the integrated fiber structure, attaching an optical fiber high polymer material coating on the surface of the optical fiber, weaving the integrated fiber composite material woven layer of the optical fiber to carry out a woven layer high polymer material dipping and attaching process, leading out the optical fiber, manufacturing a mouth protection, carrying out vacuum defoaming treatment, and carrying out normal-temperature pressurization curing treatment to form a single-layer integrated fiber composite material;
or adhering the high polymer material to the integral fiber composite woven layer or the fiber composite woven layer again or repeatedly on the single-layer integral fiber composite material, heating, pressurizing and curing, and then coating to form a resin packaging layer and a covering layer on the resin packaging layer, so as to form the multilayer state monitoring integral composite material.
And simultaneously, the embodiment of the utility model discloses a still have following characteristics:
according to an embodiment of the present invention, the optical fiber external coupling intelligent optical fiber sensor.
Further, the optical fiber sensor is a bragg grating (FBG) based intelligent optical fiber sensor integration.
Furthermore, the intelligent optical fiber sensor comprises a strain sensor and a grating temperature sensor.
According to some embodiments of the utility model, the optical fiber macromolecular material coating is epoxy resin curing agent or phenolic resin or vinyl resin structure, and thermosetting resin can all reach corresponding requirement basically.
According to the utility model discloses an embodiment, still predetermine coupler and direction controller in the combined material, through the coupler with the direction controller monitoring is compiled fibre combined material weaves intraformational the optic fibre state.
According to some embodiments of the utility model, state monitoring integration combined material still includes multilayer polymer thin film layer, carries out resin encapsulation again and installs the overburden additional.
According to some embodiments of the present invention, the optical fiber polymer material coating layer is a coating layer having a mechanical protection function or a coating layer having an optical reflection function or a coating layer combining functions of the two.
According to some embodiments of the invention, the polymer material coating is a thermosetting polymer material coating.
According to some embodiments of the invention, the thermosetting polymer material coating is an epoxy or acrylic coating.
According to an embodiment of the utility model, carry out the exposure optic fibre top layer of export protection and adhere to coating elasticity macromolecular material coating.
According to one embodiment of the present invention, the optical fibers with the diameters of 250 μm, 170 μm, 160 μm and 125 μm coated with photosensitive epoxy acrylate are implanted into the integrated fiber structure, the optical fibers are reserved at all embedding positions for processing and protecting the optical fibers, and after completion, the composite material is manufactured by vacuum bag manufacturing, autoclave curing and manufacturing
According to some embodiments of the utility model, the surface coating one deck polymer film of optic fibre can be acrylic acid film or polyimide film, and acrylic acid coating thickness is 60 mu m ~ 80 mu m, and polyimide coating thickness is 10 mu m ~ 25 mu m, and the sensor sensitivity is influenced to the coating is too thick, does not play the effect of protection optic fibre too thinly.
According to the utility model discloses a some embodiments expose optical fiber protection sleeve and adopt the polytetrafluoroethylene material, and the sleeve pipe external diameter is 0.8mm, and protection sleeve can effectively protect optic fibre under shaping and the high low temperature environment of monitoring.
According to the utility model discloses an embodiment, fibre composite is that there is one or more in the fibre material and the resin matrix composite preimpregnation material that the mixing of the kind or the multiple in the resin material obtained according to certain proportion to constitute, fibre material include carbon fiber, glass fiber, aramid fiber, resin material include epoxy, phenolic resin, vinyl or other thermosetting resin.
The utility model also discloses a multilayer structure based on the integrative fiber composite structure of individual layer forms, include the integrative fiber composite structure of individual layer, the outside have multilayer fiber composite structure or integrative fiber composite structure, the inferior outside has the encapsulated layer and the overburden in the outside.
While the invention has been described in detail and with reference to a number of illustrative embodiments thereof, it should be understood that numerous other modifications and embodiments can be devised by those skilled in the art that will fall within the spirit and scope of the principles of this invention. In particular, reasonable variations and modifications are possible in the component parts and/or arrangements of the subject combination arrangement within the scope of the foregoing disclosure, the drawings and the appended claims without departing from the spirit of the invention. Except variations and modifications in the component parts and/or arrangements, the scope of which is defined by the appended claims and equivalents thereof.
Claims (9)
1. A state monitoring integrated composite material structure is characterized by comprising an integrated fiber composite material woven layer woven by an integrated fiber structure, wherein the integrated fiber structure comprises a fiber composite material and an optical fiber, the optical fiber is compounded into the fiber composite material, and an optical fiber polymer material coating is attached to the surface of the optical fiber;
and a braided layer high polymer material curing structure entering the gaps of the braided layer of the integrated fiber composite material by a dipping and attaching method, wherein the braided layer high polymer material curing structure is a high polymer material curing structure subjected to vacuum defoaming treatment and normal-temperature pressurizing and curing treatment;
the integrated fiber composite material woven layer and the woven layer high polymer material curing structure form a single-layer integrated fiber composite material structure, the integrated fiber structure is provided with an exposed end exposed out of the integrated fiber composite material structure, and an elastic material layer is arranged outside the exposed end.
2. The condition monitoring integrated composite structure according to claim 1, wherein the optical fiber is externally coupled with an intelligent optical fiber sensor integrated with a bragg grating based intelligent optical fiber sensor.
3. The condition monitoring integrated composite structure as claimed in claim 2, wherein said intelligent optical fiber sensor comprises a strain sensor and a grating temperature sensor.
4. The condition monitoring integrated composite structure according to claim 1, wherein the optical fiber polymer material coating is an epoxy resin curing agent film, a phenolic resin film or a vinyl resin film.
5. The condition monitoring integrated composite structure as claimed in claim 1, wherein a coupler and a direction controller are further preset in the composite structure, and the condition of the optical fiber coded in the fiber composite braided layer is monitored through the coupler and the direction controller.
6. The condition monitoring integrated composite structure according to claim 1, further comprising a plurality of polymeric film layers, and a secondary outer resin encapsulation layer and an outer cover layer.
7. The condition monitoring integrated composite structure according to claim 1, wherein the optical fiber polymer material coating is a coating with a mechanical protection function or a coating with an optical reflection function or a coating combining the functions of the two.
8. The condition monitoring integrated composite structure of claim 1, wherein the polymer material coating is a thermoset polymer material coating.
9. The condition monitoring integrated composite structure as claimed in claim 8, wherein the thermosetting polymer material coating is an epoxy resin or acrylic resin coating.
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| CN201920672045.1U CN211178779U (en) | 2019-05-13 | 2019-05-13 | State monitoring integrated composite material structure |
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| CN201920672045.1U CN211178779U (en) | 2019-05-13 | 2019-05-13 | State monitoring integrated composite material structure |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111928971A (en) * | 2019-05-13 | 2020-11-13 | 南京大学昆山创新研究院 | State monitoring integrated composite material structure |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111928971A (en) * | 2019-05-13 | 2020-11-13 | 南京大学昆山创新研究院 | State monitoring integrated composite material structure |
| CN111928971B (en) * | 2019-05-13 | 2024-08-27 | 南京大学昆山创新研究院 | State monitoring integrated composite material structure |
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