CN112519273B - Method for repairing aluminum panel honeycomb sandwich structure with ultra-large area debonding - Google Patents
Method for repairing aluminum panel honeycomb sandwich structure with ultra-large area debonding Download PDFInfo
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- CN112519273B CN112519273B CN202011213661.4A CN202011213661A CN112519273B CN 112519273 B CN112519273 B CN 112519273B CN 202011213661 A CN202011213661 A CN 202011213661A CN 112519273 B CN112519273 B CN 112519273B
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- aluminum panel
- sandwich structure
- debonding
- honeycomb sandwich
- repairing
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C73/00—Repairing of articles made from plastics or substances in a plastic state, e.g. of articles shaped or produced by using techniques covered by this subclass or subclass B29D
- B29C73/02—Repairing of articles made from plastics or substances in a plastic state, e.g. of articles shaped or produced by using techniques covered by this subclass or subclass B29D using liquid or paste-like material
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C73/00—Repairing of articles made from plastics or substances in a plastic state, e.g. of articles shaped or produced by using techniques covered by this subclass or subclass B29D
- B29C73/24—Apparatus or accessories not otherwise provided for
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C73/00—Repairing of articles made from plastics or substances in a plastic state, e.g. of articles shaped or produced by using techniques covered by this subclass or subclass B29D
- B29C73/24—Apparatus or accessories not otherwise provided for
- B29C73/26—Apparatus or accessories not otherwise provided for for mechanical pretreatment
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29L—INDEXING SCHEME ASSOCIATED WITH SUBCLASS B29C, RELATING TO PARTICULAR ARTICLES
- B29L2031/00—Other particular articles
- B29L2031/60—Multitubular or multicompartmented articles, e.g. honeycomb
- B29L2031/608—Honeycomb structures
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Abstract
The invention discloses a method for repairing an oversized area debonding of an aluminum panel honeycomb sandwich structure, which comprises the following steps: step 1: dividing the debonding area of the aluminum panel honeycomb sandwich structure into a plurality of repair units; step 2: injecting the repairing glue solution into the honeycomb cells of the repairing unit for multiple times and curing; and 3, step 3: paving an aluminum panel and a glue film in a debonding area of the honeycomb sandwich structure of the aluminum panel, and carrying out nondestructive testing in the paving process; and 4, step 4: the debonding area of the honeycomb sandwich structure of the aluminum panel is cured to finish the repair, the repair method has good process stability, and the explosion-proof problem of large-dose glue injection in the repair process is solved; the problem of the aluminium panel in repair process spread paste exhaust, improve panel and profile laminating degree is solved.
Description
Technical Field
The invention belongs to a metal structure gluing repair technology, and relates to a method for repairing an aluminum panel honeycomb sandwich structure by ultra-large area debonding.
Background
Aluminum panel honeycomb sandwich structures are widely used in aerospace manufacturing due to their high design stiffness and low weight. Aiming at the debonding defect of the panel and the honeycomb of the aluminum panel honeycomb sandwich structure, the currently adopted repairing method for the debonding area which is smaller (generally smaller than 200mm multiplied by 200mm) is as follows: and removing the aluminum panel in the debonding area, injecting EA9396 glue into the honeycomb in the debonding area, paving a layer of aluminum panel and J-95 glue film at the debonding position after the glue solution is cured, and curing again, or removing the honeycomb in the debonding area and the aluminum panel together, and replacing the honeycomb and the aluminum panel to finish repairing.
In a patent published on aluminum panel honeycomb sandwich structure, wherein:
a method for repairing the high-density honeycomb block in the sandwich structure of aluminium panel or honeycomb includes such steps as using EA9396 adhesive to adhere metal patches to the surface of said insert and aluminium panel, and repairing the surface of large-area aluminium panel or honeycomb sandwich structure by said method.
For the debonding of the honeycomb sandwich structure of the aluminum panel with an ultra-large area (the ultra-large area means that the area exceeds 500mm multiplied by 500mm), under the condition that the structural form of the aluminum panel is not changed and the honeycomb cannot be replaced, the repairing by adopting the CN105774002A repairing process easily causes the following two problems:
1) meanwhile, a large amount of EA9396 glue is poured, so that glue solution is suddenly accumulated to generate heat and damage the part of the non-debonded sandwich structural member;
2) the repairing of large-area honeycomb damage by using a common aluminum panel paving and pasting mode can cause poor pasting degree of the aluminum panel for repairing and the repairing profile, and the repaired sandwich structural member can not meet the requirements of nondestructive testing and appearance testing.
Disclosure of Invention
The purpose of the invention is: the invention provides a method for repairing debonding of an ultra-large area aluminum panel sandwich structural member, which is used for completing the repair when the ultra-large area damage occurs to the aluminum panel honeycomb sandwich structural member and the original structure of a part is not changed. The method has high success rate, the nondestructive detection and the appearance detection of the repaired sandwich structure can both ensure the qualification, and the repair method can be widely applied to the repair of the damage of the ultra-large area of the honeycomb sandwich structure of the aluminum panel in the aviation industry.
The technical scheme of the invention is as follows:
a method for repairing the ultra-large area debonding of an aluminum panel honeycomb sandwich structure comprises the following steps:
step 1: dividing the debonding area of the aluminum panel honeycomb sandwich structure into a plurality of repair units;
step 2: injecting the repairing glue solution into the honeycomb cells of the repairing unit for multiple times and curing;
and step 3: paving an aluminum panel and a glue film in a debonding area of the honeycomb sandwich structure of the aluminum panel, and carrying out nondestructive testing in the paving process;
and 4, step 4: and curing the debonding area of the honeycomb sandwich structure of the aluminum panel to finish the repair.
Further, before step 1, treating the surface of the debonding area of the aluminum panel honeycomb sandwich structure, specifically: and removing the aluminum panel in the debonding area of the aluminum panel honeycomb sandwich structure, treating the curling and folding parts of the aluminum panel at the periphery of the debonding area of the aluminum panel honeycomb sandwich structure, and simultaneously removing impurities and oil stains at the debonding area and the periphery of the aluminum panel honeycomb sandwich structure.
Further, step 1 is to lay a warp-wise adhesive tape and a weft-wise adhesive tape on the debonding area of the aluminum panel honeycomb sandwich structure, and divide the debonding area of the aluminum panel honeycomb sandwich structure into a plurality of repair units, wherein the size of the repair units is not more than 30mm × 30 mm.
Further, the step 2 of injecting the repair glue solution into the honeycomb cells of the repair unit for multiple times and curing specifically includes the following steps:
step 2.1, injecting the repairing glue solution into the honeycomb cells of the repairing unit and curing;
step 2.2, removing the weft-wise adhesive tape, injecting the repair adhesive liquid into the honeycomb cells covered by the weft-wise adhesive tape and curing;
step 2.3, removing the warp-wise adhesive tape, laying the weft-wise adhesive tape again according to the original position, injecting the repairing adhesive liquid into the honeycomb cells covered by the warp-wise adhesive tape and curing;
step 2.4, removing the weft-wise adhesive tape laid in the step 2.3;
and 2.5, injecting the repairing glue solution into the honeycomb cells overlapped by the warp-wise adhesive tape and the weft-wise adhesive tape and curing.
Further, the repair glue solution in the step 2 is a mixed solution of HYSOL EA9396 glue, a curing agent and microspheres BJOA0930, and the mixing ratio is 100: 30: 10.
further, step 2, injecting the repair glue solution into the honeycomb cells of the repair unit for multiple times and curing, wherein the curing process is as follows: the curing is carried out for 24 hours at room temperature and then for 1 hour at 65 ℃.
And further, after the step 2 is finished, removing dust on the debonding area and the peripheral surface of the aluminum panel honeycomb sandwich structure by using dry air, and removing oil stains on the debonding area and the peripheral surface of the aluminum panel honeycomb sandwich structure by using butanone.
Further, paving and pasting an aluminum panel and an adhesive film in the debonding area of the honeycomb sandwich structure of the aluminum panel in the step 3, wherein the adhesive film is a J-95 adhesive film, and an ultrasonic nondestructive testing probe is used for testing the paving and pasting quality in the paving and pasting process.
Further, the step 4 of curing the debonding area pavement of the aluminum panel honeycomb sandwich structure specifically comprises the following steps: covering the debonding area of the aluminum panel honeycomb sandwich structure with an isolating film and a breathable felt, pasting a vacuum bag in the debonding area of the aluminum panel honeycomb sandwich structure, vacuumizing and curing.
The invention has the beneficial effects that:
the invention provides a repairing method for debonding an ultra-large area aluminum panel interlayer structural member, which has good process stability and solves the explosion-proof problem of large-dose glue injection in the repairing process; the problem of the aluminium panel in repair process spread paste exhaust, improve panel and profile laminating degree is solved.
Drawings
FIG. 1 is a schematic diagram of a warp-wise adhesive tape and a weft-wise adhesive tape laid on a debonding area of an aluminum panel honeycomb sandwich structure;
FIG. 2 is a schematic diagram showing the height of the liquid level in the honeycomb cell of the repair unit when the repair glue is injected;
FIG. 3 is a schematic view of a repair cement injection into a honeycomb cell of a repair unit;
FIG. 4 is a schematic view of a honeycomb cell with the weft tape removed;
FIG. 5 is a schematic view of a honeycomb cell covered with a repair cement injected into a weft tape after removal of the weft tape;
FIG. 6 schematic representation of honeycomb cell area for warp tape removal and replating weft tape
FIG. 7 is a schematic view of a honeycomb cell covered with a weft tape after removing the warp tape and re-applying the weft tape and injecting a repair cement into the weft tape
FIG. 8 is a schematic view of a repair cement filled in the honeycomb cells of the repair unit;
FIG. 9 is a schematic view of laying an aluminum panel and a glue film in a debonding region of a honeycomb sandwich structure of the aluminum panel and performing nondestructive testing.
Detailed Description
The following detailed description of the embodiments of the present invention, such as the shapes and configurations of the components, the mutual positions and connection relationships among the components, the functions and operating principles of the components, the manufacturing processes and the operation methods, etc., will be further explained in detail by referring to the accompanying drawings, so as to help those skilled in the art to more completely, accurately and deeply understand the conception and technical scheme of the present invention:
example 1:
a method for repairing the ultra-large area debonding of an aluminum panel honeycomb sandwich structure comprises the following steps:
step 1: dividing the debonding area of the aluminum panel honeycomb sandwich structure into a plurality of repair units;
step 2: injecting the repairing glue solution into the honeycomb cells of the repairing unit for multiple times and curing;
and step 3: paving an aluminum panel and a glue film in a debonding area of the honeycomb sandwich structure of the aluminum panel, and carrying out nondestructive testing in the paving process;
and 4, step 4: and curing the debonding area of the honeycomb sandwich structure of the aluminum panel to finish the repair.
Another embodiment of the invention: before step 1, treating the surface of a debonding area of the honeycomb sandwich structure of the aluminum panel, specifically: the aluminum panel in the debonding area of the aluminum panel honeycomb sandwich structure is removed, the debonding area of the honeycomb sandwich structure is convenient to repair subsequently, the curling and folding parts of the aluminum panel around the debonding area of the aluminum panel honeycomb sandwich structure are treated, and meanwhile, the impurities and oil stains in the debonding area of the aluminum panel honeycomb sandwich structure and around the debonding area of the aluminum panel honeycomb sandwich structure are removed by using user cleaning agents such as acetone, butanone and the like.
As shown in fig. 1, the warp tapes and the weft tapes with the same spacing are laid on the debonding area of the aluminum panel honeycomb sandwich structure, the widths of the warp tapes and the weft tapes are completely the same, the warp tapes and the weft tapes divide the debonding area of the aluminum panel honeycomb sandwich structure into a plurality of distributed repair units, the sizes of the repair units are not more than 30mm × 30mm, meanwhile, the widths of the warp tapes and the weft tapes are not more than 30mm, and the uniformity of the formed repair units is ensured.
Among others, another embodiment of the invention: injecting the repairing glue solution into the honeycomb cells of the repairing unit for multiple times and curing, and specifically comprising the following steps of:
step 2.1 as shown in fig. 2, injecting the repairing glue solution into the honeycomb cell of the repairing unit, wherein the height of the repairing glue solution is not more than 3mm, and after the repairing glue solution is injected, curing the repairing glue solution, wherein the curing process comprises the following steps: curing for 24 hours at room temperature, and then curing for 1 hour at 65 ℃;
step 2.2, removing the weft-wise adhesive tape, injecting the repair adhesive solution into the honeycomb cells covered by the weft-wise adhesive tape and curing, wherein the curing process is as follows: curing for 24 hours at room temperature, and then curing for 1 hour at 65 ℃;
step 2.3, removing the warp-wise adhesive tape, laying and sticking the weft-wise adhesive tape again according to the original position, injecting the repairing adhesive solution into the honeycomb cells covered by the warp-wise adhesive tape and curing, wherein the curing process comprises the following steps: curing for 24 hours at room temperature, and then curing for 1 hour at 65 ℃;
step 2.4, removing the weft-wise adhesive tape laid in the step 2.3;
and 2.5, injecting the repair glue solution into the honeycomb cells overlapped by the warp-wise adhesive tape and the weft-wise adhesive tape and curing, wherein the glue injection of the debonding area of the honeycomb sandwich structure of the aluminum panel is finished.
Another embodiment of the present invention is: the repairing glue solution is a mixed solution of HYSOL EA9396 glue, a curing agent and microspheres BJOA0930, and the mixing ratio is 100: 30: 10; hysol EA9396 glue has a low viscosity, room temperature curing epoxy paste adhesive, has excellent strength properties at temperatures from-55 to 177 ℃, bonds the assembly without blocking the pores of the honeycomb and perforated screen, such materials can run at 177C/350F for thousands of hours without thermal degradation, such adhesives are sufficient to withstand the harsh continuous high temperature operating environment and meet the harsh requirements of jet engine manufacturers, nacelle manufacturers, and commercial aircraft manufacturers (e.g., Airbus and Boeing).
The curing agent adopts epoxy resin, the curing effect is good, and the curing condition is easy to realize; the microsphere BJOA0930 is a BJ0-0930 phenolic resin hollow microsphere, and has a carbon hollow microsphere with good sphericity and high strength. The repair adhesive is obtained by configuring the components according to the specific proportion, integrates high adhesion, high strength and high temperature resistance, and can effectively meet the adhesion repair requirement of an airplane aluminum panel structural member.
Wherein, an aluminum panel and a glue film are paved on a debonding area of the honeycomb sandwich structure of the aluminum panel, the glue film is a J-95 glue film, before paving the glue film, the J-95 glue film is cut into the size which is the same as the size of the debonding area of the honeycomb sandwich structure of the aluminum panel, then the J-95 glue film is cut and paved on the debonding area of the honeycomb sandwich structure of the aluminum panel, when paving, continuously compacting the joint part of the J-95 adhesive film and the debonding area of the honeycomb sandwich structure of the aluminum panel by using a pressing plate, discharging air bubbles, if the joint part of the J-95 adhesive film and the debonding area of the honeycomb sandwich structure of the aluminum panel is not paved firmly, a hair drier is used for heating and paving at the same time, and meanwhile, in the paving and pasting process, an ultrasonic nondestructive testing probe is used for detecting whether the paving and pasting quality is pasted tightly, after a glue film is pasted tightly, another layer of anti-sticking isolation paper on the surface is torn off, and the anti-sticking isolation paper is placed in a clamping die so as to be solidified.
When the debonding area of the aluminum panel honeycomb sandwich structure is cured, the method specifically comprises the following steps: covering the debonding area of the aluminum panel honeycomb sandwich structure with an isolating film and a breathable felt, pasting a vacuum bag in the debonding area of the aluminum panel honeycomb sandwich structure, vacuumizing and curing, and curing at the curing temperature of J-95 glue film.
The invention provides a method for repairing debonding of an ultra-large area aluminum panel sandwich structure member, which finishes repairing when the ultra-large area damage occurs to the aluminum panel honeycomb sandwich structure member and the original structure of parts is not changed. The method has high success rate, the nondestructive detection and the appearance detection of the repaired sandwich structure can both ensure the qualification, and the repair method can be widely applied to the repair of the damage of the ultra-large area of the honeycomb sandwich structure of the aluminum panel in the aviation industry.
The invention has been described above with reference to the accompanying drawings, it is obvious that the invention is not limited to the specific implementation in the above-described manner, and it is within the scope of the invention to apply the inventive concept and solution to other applications without substantial modification.
Claims (7)
1. A method for repairing the ultra-large area debonding of an aluminum panel honeycomb sandwich structure is characterized by comprising the following steps: the method comprises the following steps:
step 1: dividing the debonding area of the aluminum panel honeycomb sandwich structure into a plurality of repair units; laying a warp-wise adhesive tape and a weft-wise adhesive tape on a debonding area of the aluminum panel honeycomb sandwich structure, dividing the debonding area of the aluminum panel honeycomb sandwich structure into a plurality of repair units, wherein the size of each repair unit is not more than 30mm multiplied by 30 mm;
step 2: injecting the repairing glue solution into the honeycomb cells of the repairing unit for multiple times and curing; the method specifically comprises the following steps:
step 2.1, injecting the repairing glue solution into the honeycomb cells of the repairing unit and curing;
step 2.2, removing the weft-wise adhesive tape, injecting the repair adhesive liquid into the honeycomb cells covered by the weft-wise adhesive tape and curing;
step 2.3, removing the warp-wise adhesive tape, laying the weft-wise adhesive tape again according to the original position, injecting the repairing adhesive liquid into the honeycomb cells covered by the warp-wise adhesive tape and curing;
step 2.4, removing the weft-wise adhesive tape laid in the step 2.3;
step 2.5, injecting the repairing glue solution into the honeycomb cells overlapped by the warp-wise adhesive tape and the weft-wise adhesive tape and curing;
and step 3: paving an aluminum panel and a glue film in a debonding area of the honeycomb sandwich structure of the aluminum panel, and carrying out nondestructive testing in the paving process;
and 4, step 4: and curing the debonding area of the honeycomb sandwich structure of the aluminum panel to finish the repair.
2. The method for repairing the ultra-large area debonding of the aluminum panel honeycomb sandwich structure according to claim 1, characterized in that: before step 1, treating the surface of a debonding area of the honeycomb sandwich structure of the aluminum panel, specifically: and removing the aluminum panel in the debonding area of the aluminum panel honeycomb sandwich structure, treating the curling and folding parts of the aluminum panel at the periphery of the debonding area of the aluminum panel honeycomb sandwich structure, and simultaneously removing impurities and oil stains at the debonding area and the periphery of the aluminum panel honeycomb sandwich structure.
3. The method for repairing the ultra-large area debonding of the aluminum panel honeycomb sandwich structure according to claim 1, characterized in that: the repairing glue solution in the step 2 is a mixed solution of HYSOL EA9396 glue, a curing agent and microspheres BJOA0930, and the mixing ratio is 100: 30: 10.
4. the method for repairing the ultra-large area debonding of the aluminum panel honeycomb sandwich structure according to claim 1, characterized in that: and 2, injecting the repairing glue solution into the honeycomb cells of the repairing unit for multiple times and curing, wherein the curing process comprises the following steps: the curing is carried out for 24 hours at room temperature and then for 1 hour at 65 ℃.
5. The method for repairing the ultra-large area debonding of the aluminum panel honeycomb sandwich structure according to claim 1, characterized in that: and (3) after the step 2 is finished, removing dust on the debonding area and the peripheral surface of the aluminum panel honeycomb sandwich structure by using dry air, and removing oil stains on the debonding area and the peripheral surface of the aluminum panel honeycomb sandwich structure by using butanone.
6. The method for repairing the ultra-large area debonding of the aluminum panel honeycomb sandwich structure according to claim 1, characterized in that: and 3, paving and pasting the aluminum panel and the adhesive film in the debonding area of the honeycomb sandwich structure of the aluminum panel, wherein the adhesive film is a J-95 adhesive film, and an ultrasonic nondestructive testing probe is used for testing the paving quality in the paving and pasting process.
7. The method for repairing the ultra-large area debonding of the aluminum panel honeycomb sandwich structure according to claim 1, wherein: and 4, curing the debonding area of the aluminum panel honeycomb sandwich structure, which specifically comprises the following steps: covering the debonding area of the aluminum panel honeycomb sandwich structure with an isolating film and a breathable felt, pasting a vacuum bag in the debonding area of the aluminum panel honeycomb sandwich structure, vacuumizing and curing.
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| CN202011213661.4A CN112519273B (en) | 2020-11-03 | 2020-11-03 | Method for repairing aluminum panel honeycomb sandwich structure with ultra-large area debonding |
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| CN113415005B (en) * | 2021-06-29 | 2023-02-03 | 中国人民解放军61255部队 | Outfield repairing method for debonding and breaking of honeycomb in composite material |
| CN113977993A (en) * | 2021-11-26 | 2022-01-28 | 哈尔滨飞机工业集团有限责任公司 | Method for repairing damage of single-closed-cavity foam sandwich structure |
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| US6190484B1 (en) * | 1999-02-19 | 2001-02-20 | Kari Appa | Monolithic composite wing manufacturing process |
| EP1524105B1 (en) * | 2003-10-17 | 2009-12-09 | Euro-Composites S.A. | Lightweight material and method of production |
| US8592024B2 (en) * | 2006-05-26 | 2013-11-26 | United Technologies Corporation | Repair of perforated acoustic skins by reverse pin transfer molding |
| US7572347B2 (en) * | 2006-05-26 | 2009-08-11 | United Technologies Corporation | Repair of composite sandwich structures with uneven bond surfaces |
| US20080233346A1 (en) * | 2007-03-23 | 2008-09-25 | United Technologies Corporation | Repair of a composite sandwich structure having a perforated skin |
| JP2009208351A (en) * | 2008-03-04 | 2009-09-17 | Toyota Motor Corp | Repairing method of composite material, and manufacturing method of the composite material |
| JP5140004B2 (en) * | 2008-03-19 | 2013-02-06 | 日本碍子株式会社 | Honeycomb structure |
| US8992709B2 (en) * | 2009-12-04 | 2015-03-31 | The Boeing Company | Sandwich structure having arrestment feature and method of making the same |
| JP5818700B2 (en) * | 2012-01-19 | 2015-11-18 | 三菱航空機株式会社 | Repair method and repair structure of honeycomb sandwich structure |
| JP2014188993A (en) * | 2013-03-28 | 2014-10-06 | Mitsubishi Aircraft Corp | Honeycomb core sandwich panel repair method, and repair apparatus |
| CN105538753B (en) * | 2015-12-11 | 2017-09-29 | 哈尔滨飞机工业集团有限责任公司 | A kind of repair method of paper honeycomb sandwich |
| CN105774002A (en) * | 2016-03-21 | 2016-07-20 | 哈尔滨飞机工业集团有限责任公司 | Method for repairing debond of high-density honeycomb block of honeycomb sandwich structure of aluminum deck |
| CN107756830A (en) * | 2017-09-28 | 2018-03-06 | 国营芜湖机械厂 | One kind is applied to outfield radome damage technique for rapidly repairing method |
| CN110171579B (en) * | 2019-06-04 | 2020-11-03 | 凌云(宜昌)航空装备工程有限公司 | Method for deeply repairing metal honeycomb structural part |
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