CN113654983A - Device and method for testing adhesive property of T-shaped surface of paper honeycomb and rigid structure - Google Patents
Device and method for testing adhesive property of T-shaped surface of paper honeycomb and rigid structure Download PDFInfo
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- CN113654983A CN113654983A CN202110870759.5A CN202110870759A CN113654983A CN 113654983 A CN113654983 A CN 113654983A CN 202110870759 A CN202110870759 A CN 202110870759A CN 113654983 A CN113654983 A CN 113654983A
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- 238000012360 testing method Methods 0.000 title claims abstract description 82
- 238000000034 method Methods 0.000 title claims abstract description 26
- 230000001070 adhesive effect Effects 0.000 title claims abstract description 16
- 241000264877 Hippospongia communis Species 0.000 claims description 41
- 239000002184 metal Substances 0.000 claims description 24
- 238000004026 adhesive bonding Methods 0.000 claims description 9
- 238000006073 displacement reaction Methods 0.000 claims description 3
- 239000000725 suspension Substances 0.000 claims description 3
- 238000012512 characterization method Methods 0.000 abstract description 3
- 239000000853 adhesive Substances 0.000 description 5
- 238000010586 diagram Methods 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 238000010998 test method Methods 0.000 description 2
- 238000013461 design Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005187 foaming Methods 0.000 description 1
- 239000003292 glue Substances 0.000 description 1
- 238000003780 insertion Methods 0.000 description 1
- 230000037431 insertion Effects 0.000 description 1
- 238000011056 performance test Methods 0.000 description 1
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N19/00—Investigating materials by mechanical methods
- G01N19/04—Measuring adhesive force between materials, e.g. of sealing tape, of coating
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- Life Sciences & Earth Sciences (AREA)
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- General Health & Medical Sciences (AREA)
- General Physics & Mathematics (AREA)
- Immunology (AREA)
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- Investigating Strength Of Materials By Application Of Mechanical Stress (AREA)
Abstract
The invention belongs to the field of electromagnetic function structure performance characterization, and particularly relates to a device and a method for testing the adhesive property of a T-directional surface and a rigid structure of a paper honeycomb. By adopting the method, the bonding performance of the T-shaped surface of the paper honeycomb and the rigid structure can be well represented. When the bolt is adopted to fasten the sample in the testing device, the upper and lower face plates of the sample are tightly attached to the upper and lower clamping plates of the testing device, the rigid face plate on one side of the sample is flush with the clamping plate of the testing device, the whole assembly is ensured to be positioned on the same stress surface, and the stress surface is uniformly stressed, so that the testing precision is realized. And the pin joint is adopted, so that the test process has flexibility, and the situation that the test sample is stressed in other directions in the test process is avoided. The accuracy, precision and efficiency of the test are guaranteed. The bolt and the nut are matched and fastened to realize the diversity of the sizes of the test samples, the universality is realized, the repeated utilization can be realized, and the cost and the time of test equipment are greatly saved.
Description
Technical Field
The invention belongs to the field of electromagnetic function structure performance characterization, and particularly relates to a device and a method for testing the adhesive property of a T-directional surface and a rigid structure of a paper honeycomb.
Background
In the process of manufacturing the electromagnetic functional structure of a certain type of airplane, a large number of structures are formed by gluing T-shaped surfaces of paper honeycombs and rigid materials such as metal. The T-shaped surface of the paper honeycomb is fixed with the rigid structure through bonding by foaming glue. In the actual use process of the structure, the structure can continuously bear force under the action of an external load, so that the mechanical property of the adhesive structure needs to be examined, and the use requirement is met.
The adhesive bonding strength of the T-direction paper honeycomb and the rigid panel is tested, and no relevant test standard can be referred to at present. After the T-shaped surface of the paper honeycomb is bonded with the rigid panel, the shear strength of the paper honeycomb is weak, and a failure mode needs to be ensured to be broken at the bonding surface or the paper honeycomb. When the adhesive strength between the T-direction surface of the paper honeycomb and the rigid panel is tested, the sample is fastened between an upper clamping plate and a lower clamping plate of the testing device by four bolts, the lug is clamped at a chuck of the testing machine, and then the fastened sample and the testing device are respectively connected with the lug by pins. The schematic diagram is shown in fig. 1.
The invention provides a test method for testing the adhesive property of a T-directional surface and a rigid structure of a paper honeycomb. By adopting the method, the bonding performance of the T-shaped surface of the paper honeycomb and the rigid structure can be well represented. Adopt bolt 4 to fasten the sample in testing arrangement when, the upper and lower panel of sample and testing arrangement's last 5, lower 7 splint closely laminate, and the rigidity panel 9 of sample one side is in order to be in same stress surface with 3 parallel and level of the board that adds of testing arrangement, guarantee that whole combination body is in same stress surface to realize the precision of test. The pin 2 is adopted for connection, the test process has flexibility, and the situation that the test sample is stressed in other directions in the test process is avoided.
Disclosure of Invention
The invention aims to solve the problem of test characterization of the adhesive property of the adhesive structure of the T-directional surface of a paper honeycomb and rigid materials such as metal and the like in the manufacturing process of an electromagnetic functional structure of a certain type of airplane, test and examine the mechanical property of the adhesive structure and meet the design requirement.
By adopting the test method, the bonding performance between the T-directional surface of the paper honeycomb and the rigid structure can be well represented, the verticality of the test sample and the test device can be ensured in the test process, the stress process has adjustability, the bonding strength between the effective honeycomb and the rigid panel can be obtained, and the test precision and the test efficiency are ensured.
Technical scheme
A device for testing the adhesive property of the T-direction surface of a paper honeycomb and a rigid structure comprises a sample clamping part, an upper device connecting part and a lower device connecting part; the sample clamping part comprises an upper clamping plate 5, a lower clamping plate 7 and a clamping plate 3, the upper clamping plate 5 and the lower clamping plate 7 are connected through four groups of nuts 8 and bolts 4, a honeycomb 6 and a metal plate 9 are arranged in the sample clamping part after being bonded, an ear insert 1 of the upper connecting part of the device is connected with the clamping plate 3 of the sample clamping part through a pin 2, and an ear insert 1 of the lower connecting part of the device is connected with the metal plate 9 through a pin 2;
the clamping plate 3 and the metal plate 9 are ensured to be on the same working plane.
The clamping plate 3 and the upper clamping plate 5 are perpendicular to each other.
Gaps are arranged in the connection areas of the lug inserts 1 and the clamping plates 3 or the metal plates 9.
The clamping plate 3 and the metal plate 9 have the same thickness.
The specimen holding portion should have a stiffness greater than 500 MPa.
The length of the metal plate 9 should be greater than the height of the honeycomb 6.
Four groups of nuts 8 and bolts 4 are arranged at four corners of the upper clamping plate 5 and the lower clamping plate 7, and the nuts 8 and bolts 4 are perpendicular to each other.
A method for testing the adhesive bonding performance of a T-face of a paper honeycomb to a rigid structure, the method comprising the steps of:
(1) measuring the length and the width of the sample;
(2) and setting the test speed to ensure that the test piece is damaged within 3-6 min. The displacement speed of the cross beam can be generally set to be 0.5 mm/min;
(3) the test piece/load plate assembly was installed into the test fixture. When clamping, the clamping plate 3 is firstly clamped to enable the sample to be in a free suspension state, and then the metal rigid plate 9 is clamped.
(4) The clamping torque of the upper clamping plate 5 and the lower clamping plate 7 is moderate, the honeycomb can be tightly attached to the upper clamping plate 5 and the lower clamping plate 7, the honeycomb cannot be damaged due to the fact that too large clamping torque cannot be applied, and the clamping torque is 2.5-3.0 N.m.
(5) The test piece is subjected to a tensile load until the test piece fails.
(6) The failure mode and failure load of the sample were recorded.
Technical effects
The invention can realize better representation of the adhesive property of the T-directional surface and the rigid structure of the paper honeycomb. The test sample and the test device are positioned on the same stress surface in the clamping process, consistency is realized in the stress process, the stress is ensured on the bonding surface of the side surface, and the test accuracy, precision and test efficiency are ensured. The bolt and the nut are matched and fastened to realize the diversity of the sizes of the test samples, the universality is realized, the repeated utilization can be realized, and the cost and the time of test equipment are greatly saved.
Drawings
FIG. 1 is a schematic diagram of a method for testing the gluing performance of a T-face of a paper honeycomb and a rigid structure
In the figure: 1-lug insertion, 2-pin, 3-clamping plate, 4-bolt, 5-upper clamping plate, 6-honeycomb, 7-lower clamping plate, 8-nut and 9-rigid metal plate.
Detailed Description
A device for testing the adhesive property of the T-direction surface of a paper honeycomb and a rigid structure comprises a sample clamping part, an upper device connecting part and a lower device connecting part; the sample clamping part comprises an upper clamping plate 5, a lower clamping plate 7 and a clamping plate 3, the upper clamping plate 5 and the lower clamping plate 7 are connected through four groups of nuts 8 and bolts 4, a honeycomb 6 and a metal plate 9 are arranged in the sample clamping part after being bonded, an ear insert 1 of the upper connecting part of the device is connected with the clamping plate 3 of the sample clamping part through a pin 2, and an ear insert 1 of the lower connecting part of the device is connected with the metal plate 9 through a pin 2;
the clamping plate 3 and the metal plate 9 are ensured to be on the same working plane. Otherwise, the accuracy of the adhesive performance test is affected.
The clamping plate 3 is perpendicular to the upper clamping plate 5, and lateral moment cannot be generated during working.
A gap is formed in the connecting area of the lug insert 1 and the clamping plate 3 or the metal plate 9, and the gap can ensure the centering property in the test process.
The thickness of the clamping plate 3 is the same as that of the metal plate 9, and the same thickness can ensure the same working plane.
The rigidity of the sample clamping part is larger than 500MPa, so that the sample clamping part is prevented from deforming in the test process.
The length of the metal plate 9 is larger than the height of the honeycomb 6, so that the sample can be conveniently clamped.
Four groups of nuts 8 bolts 4 should set up at four angles corners of last grip block 5, lower grip block 7, and mutually perpendicular between each group of nuts 8 bolts 4 for fixed centre gripping is more firm.
A method for testing the adhesive bonding performance of a T-face of a paper honeycomb to a rigid structure, the method comprising the steps of:
(1) measuring the length and the width of the sample;
(2) and setting the test speed to ensure that the test piece is damaged within 3-6 min. The displacement speed of the cross beam can be generally set to be 0.5 mm/min;
(3) the test piece/load plate assembly was installed into the test fixture. When clamping, the clamping plate 3 is firstly clamped to enable the sample to be in a free suspension state, and then the metal rigid plate 9 is clamped. On one hand, the deviation of the system can be eliminated, and on the other hand, the force action surfaces can be ensured to be positioned on the same plane;
(4) the clamping torque of the upper clamping plate 5 and the lower clamping plate 7 is moderate, the honeycomb can be tightly attached to the upper clamping plate 5 and the lower clamping plate 7, the honeycomb cannot be damaged due to the fact that excessive clamping torque cannot be applied, and the generally recommended clamping torque is 2.5-3.0 N.m.
(5) The test piece is subjected to a tensile load until the test piece fails.
(6) The failure mode and failure load of the sample were recorded.
The sample is placed on the clamping plates 5 and 7 and tightly attached, and the sample is fastened by the adjusting bolt 4 and the nut 8. The lug insert 1 is clamped at a chuck of the testing machine, and the clamping plate 3 is connected with the upper lug insert 1 through a pin 2. The rigid plate 9 of the sample is connected to the lower ear insert 1 by the pin 2. The adhesion performance of the T-direction surface of the paper honeycomb and the rigid structure is represented by the movement of the chuck of the tester.
(1) The test sample is tightly attached to the upper clamping plate 5 and the lower clamping plate 7 of the testing device by adopting bolts 4 for fastening, and the rigid plate 9 is flush with the clamping plate 3 of the testing device to ensure that the test sample is in the same verticality;
(2) the pins 2 are adopted for connection, so that the test process has flexibility, and the stress of the test sample in other directions in the test process is avoided;
(3) and an effective failure mode between the T-directional surface of the paper honeycomb and the rigid plate is realized, and effective experimental data are obtained.
Claims (9)
1. A device for testing the adhesive property of a T-directional surface of a paper honeycomb and a rigid structure is characterized by comprising a sample clamping part, an upper device connecting part and a lower device connecting part; the sample clamping part comprises an upper clamping plate (5), a lower clamping plate (7) and a clamping plate (3), wherein the upper clamping plate (5) and the lower clamping plate (7) are connected through four groups of nuts (8) and bolts (4), the honeycomb (6) and the metal plate (9) are bonded and then arranged in the sample clamping part, the lug of the upper connecting part of the device is inserted into the lug (1) and connected through a pin (2) the clamping plate (3) of the sample clamping part, and the lug of the lower connecting part of the device is inserted into the lug (1) and connected with the metal plate (9) through the pin (2).
2. A device for testing the T-face gluing properties of paper honeycombs to rigid structures according to claim 1, wherein the holding plate (3) and the metal plate (9) are secured on the same working plane.
3. The device for testing the T-face gluing property of the paper honeycomb to the rigid structure according to claim 1, wherein the clamping plate 3 and the upper clamping plate (5) are perpendicular to each other.
4. The device for testing the T-shaped surface bonding performance of the paper honeycomb and the rigid structure as claimed in claim 1, wherein a gap is formed between the ear plug (1) and the connection area of the clamping plate (3) or the metal plate (9).
5. The device for testing the T-face gluing performance of the paper honeycomb and the rigid structure according to claim 1, wherein the thickness of the holding plate (3) is the same as that of the metal plate (9).
6. The apparatus for testing the T-face adhesion of a honeycomb to a rigid structure of paper as claimed in claim 1, wherein the rigidity of the holding portion of the test paper is greater than 500 MPa.
7. A device for testing T-face gluing properties of paper honeycomb to rigid structures according to claim 1, characterized in that the length of the metal plate (9) is greater than the height of the honeycomb (6).
8. The device for testing the T-facing surface bonding performance of the honeycomb and the rigid structure of the paper as claimed in claim 1, wherein the four sets of the nuts (8) and the bolts (4) are arranged at the four corner corners of the upper clamping plate (5) and the lower clamping plate (7), and the nuts (8) and the bolts (4) of each set are perpendicular to each other.
9. A method for testing the adhesive property of a T-shaped surface of a paper honeycomb and a rigid structure is characterized by comprising the following steps:
(1) measuring the length and the width of the sample;
(2) setting a test speed to enable the test piece to be damaged within 3-6 min; setting the displacement speed of the cross beam to be 0.5 mm/min;
(3) installing the test piece/loading plate assembly into a test tool; when clamping, firstly, the clamping plate (3) is clamped, so that the sample is in a free suspension state, and then the metal plate (9) is clamped;
(4) the clamping torque of the upper clamping plate (5) and the lower clamping plate (7) is 2.5-3.0 N.m;
(5) applying a tensile load to the test piece until the test piece is damaged;
(6) the failure mode and failure load of the sample were recorded.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110870759.5A CN113654983B (en) | 2021-07-30 | 2021-07-30 | Device and method for testing cementing property of T-direction surface and rigid structure of paper honeycomb |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110870759.5A CN113654983B (en) | 2021-07-30 | 2021-07-30 | Device and method for testing cementing property of T-direction surface and rigid structure of paper honeycomb |
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| Publication Number | Publication Date |
|---|---|
| CN113654983A true CN113654983A (en) | 2021-11-16 |
| CN113654983B CN113654983B (en) | 2024-04-09 |
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| CN202110870759.5A Active CN113654983B (en) | 2021-07-30 | 2021-07-30 | Device and method for testing cementing property of T-direction surface and rigid structure of paper honeycomb |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114674654A (en) * | 2022-04-08 | 2022-06-28 | 天津大学 | Clamping device and method for T-shaped sample or cross node sample |
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Cited By (1)
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|---|---|---|---|---|
| CN114674654A (en) * | 2022-04-08 | 2022-06-28 | 天津大学 | Clamping device and method for T-shaped sample or cross node sample |
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| CN113654983B (en) | 2024-04-09 |
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