CN209311394U - A kind of angle R test block for composite structure ultrasound detection - Google Patents
A kind of angle R test block for composite structure ultrasound detection Download PDFInfo
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- CN209311394U CN209311394U CN201821669092.2U CN201821669092U CN209311394U CN 209311394 U CN209311394 U CN 209311394U CN 201821669092 U CN201821669092 U CN 201821669092U CN 209311394 U CN209311394 U CN 209311394U
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Abstract
The application discloses a kind of test block of the angle R and production method for composite structure ultrasound detection, the angle R test block is the structure of one " R angleplied laminate pressing plate ladder ", interior thickness area and the prefabricated artificial defect of nearly table caliper zones difference in five thickness steps, may spontaneous lamination defect in real work to simulate.Artificial defect defect totally 10, wherein test block outer dimension is long 300mm, and each width 50mm in both sides, the angle R radius of curvature is 5mm, and flaw size is 3mm × 3mm, and defect is arranged at equal intervals in dislocation.The angle the R test block of the application can really simulate lamination defect, it can be used for supersonic detection method to analyze the checking research of different structure, different-thickness integration composite structure detection applicability, the quantitative assessment of defect, it can be also used for the verifying in actual work to detection device validity, to guarantee product quality.
Description
Technical field
The application belongs to technical field of nondestructive testing, and more specifically, this application involves fibre resin based composites knots
Structure ultrasonic detecting technology field.
Background technique
Integration composite structure has very high Compression Stability, can bear very high load, be airframe structure
The development trend of pattern, such as newly developed Boeing B787, Air Passenger A350 use this structure type.Integration composite material
Structure generallys use co-curing figuration manufacture scheme, this is one by the thin-wall construction that covering and stringer are that main body unit forms
Several different composite material parts are designed to a biggish single piece, one in autoclave by kind integration manufacturing method
The technique of solidification and bonding process is completed at the same time in secondary solidification.Co-cure method can reduce composite material parts quantity, reduce
The impost of connector and connection transitional region.
The stringer of integration composite material connects corner with covering, has the angles R such as T-type, Ω type and J-type, due to external applied load
Effect, can have biggish stress and concentrate, have vital influence to the safe flight of aircraft, for that purpose it is necessary to carry out
Ultrasound detection is to ensure product quality.And can whether the method for ultrasound detection and detection device be reliable, check and find out to design
To the defect of the angle R prescribed level, it is necessary to produce ultrasonic inspection reference test block in advance, and before each detection with the test block to surpassing
The method and detection device of sound detection carry out performance verification.It is one to the manual simulation of defect in non-destructive testing reference block production
Item key technology, and to the real simulation of lamination defect it is then the difficult point place of test block production.
Summary of the invention
The application technical problems to be solved are to provide a kind of angle R for integration composite structure ultrasound detection
Test block can be used for the method for various ultrasound detections and the verifying of detection device, and repeatable production, it is ensured that high quality level, from
And determine whether the method for ultrasound detection and detection device are reliable；The another Embedded defect by different-thickness ladder compares, and is used for
The judge of different test objects is analyzed.
A kind of angle R test block for composite structure ultrasound detection of the application, the angle R test block are with the compound of corner
The laminate of material, laminate include two sections of plates, and by corner arc transition between two sections of plates, laminate thickness is in step-like
Increase；Laminate is set there are five thickness steps, and the interior thickness area in the corner center of arc region of each step and nearly surface layer are thick
Degree area is prefabricated with artificial defect respectively；The artificial defect is in the transition arc central area of laminate in dislocation arrangement；It is described
Artificial defect is the double-deck polytetrafluoroethylene diaphragm
The bilayer polytetrafluoroethylene diaphragm is rectangular.
It is described bilayer polytetrafluoroethylene diaphragm it is rectangular having a size of 3mm × 3mm.
The bilayer polytetrafluoroethylene diaphragm surface is coated with adhesive.
The size of every section of plate of the laminate is long 300mm, width 50mm, and the radius of corner circular arc is 5mm.
Five thickness steps of the laminate, original depth 1mm successively increase 0.5mm, step maximum gauge 3mm.
The artificial defect with a thickness of 0.058 mm.
The corner of the angle R test block is 90 °.
On the other hand, the production method of a kind of angle R test block for composite structure ultrasound detection of the application, step
Are as follows:
S1 R angle test block laying:
Material prepreg blanking;Intersect laying by 0 °, 45 °, 90 ° of -45 ° of four directions, avoids bending and shock resistance
Damage；The pre-buried artificial defect between the 2nd layer and the 3rd layer of laying pad pasting face；Distinguish at laying interior thickness pre-buried artificial scarce
It falls into;
S2 test block forming
By the angle the R test block for completing laying, vacuum sealing plays bag in tooling, is sent into autoclave and carries out curing molding;
S3 test block processing
The surplus of each 25mm of milling test block surrounding, the angle R test block outer dimension are long 300mm, each width 50mm in both sides, corner circle
Arc radius is 5mm;
S4 test block identification
In non-destructive testing test block it is no there are natural flaw, whether pre-buried artificial defect detectable, defect display size and reality
Border size difference differentiates and requires are as follows: being not allow for natural flaw, all pre-buried artificial defects can detect, defect display size
With actual size difference in ± 25% range, test block is qualified effectively；Otherwise, it remakes.
The beneficial effect of the application is: will manually lack with a thickness of the band rectangular diaphragm of glue bilayer polytetrafluoroethylene (PTFE) of 0.058 mm
Fall into be embedded in each step of composite material, rectangular membrane areas not with typical round diaphragm: avoid couple different and defect shape from drawing
Play erroneous judgement.Obtained artificial defect can more really simulate lamination defect, and be capable of fixing position, comply fully with design drawing
Paper requirement, avoids artificial defect from obscuring with natural flaw, and repeatable production；Due to simulated defect and natural flaw acoustic impedance phase
Approximation can verify the validity of the detectability of supersonic detection method and all kinds of detection devices more truly and effectively；People
Work defect, using dislocation arranged at equal intervals, can separately verify detection of the supersonic detection method to lamination defect in different-thickness area
Ability.
Detailed description of the invention
Fig. 1 is the angle the R test block defect arrangement schematic diagram of the application.
Fig. 2 is the angle the R test block solid cloth schematic diagram of the application.
Fig. 3 is that nearly surface layer artificial defect schematic diagram is preset in the application R angle test block.
Fig. 4 is that middle layer artificial defect schematic diagram is preset in the application R angle test block.
Fig. 5 is the application R angle test block laying and sense partitions schematic diagram.
Fig. 6 is the area A ultrasonic phase array detection data.
Fig. 7 is the area B ultrasonic phase array detection data
Fig. 8 is the area C ultrasonic phase array detection data.
Fig. 9 is that the excellent area A in the area A sweeps waveform.
Figure 10 is that the defect A of the area A 1 sweeps waveform.
Figure 11 is that the excellent area A in the area C sweeps waveform.
Figure 12 is that the defect A of the area C 9 sweeps waveform.
Specific embodiment:
The application is further illustrated with example with reference to the accompanying drawing.
Embodiment 1
See Fig. 1 to Fig. 5, a kind of angle R test block for composite structure ultrasound detection of the application, the angle R test block is
The laminate of composite material with corner, laminate include two sections of plates, and by corner arc transition between two sections of plates, corner is
90 °, laminate thickness is in step-like increase；Laminate is set there are five thickness steps, the corner center of arc region of each step
Interior thickness area and nearly skin depth area be prefabricated with artificial defect respectively；The artificial defect is in the transition arc of laminate
Heart district domain is in dislocation arrangement；The artificial defect is the rectangular diaphragm of the double-deck polytetrafluoroethylene (PTFE), rectangular having a size of 3mm × 3mm.It is double-deck
Polytetrafluoroethylene diaphragm surface is coated with adhesive, so that position is fixed；The double-deck rectangular diaphragm of polytetrafluoroethylene (PTFE) with a thickness of
0.058 mm 。
The size of every section of plate of the laminate is long 300mm, width 50mm, and the radius of corner circular arc is 5mm；Laminate
Five thickness steps, original depth 1mm successively increases 0.5mm, step maximum gauge 3mm.
Embodiment 2
See Fig. 1 to Fig. 5, a kind of angle R test block for integration composite structure ultrasound detection of the application, the comparison
Test block is the structure of one " R angleplied laminate pressing plate step ", and interior thickness area and nearly table caliper zones difference are pre- in five thickness steps
Artificial defect has been made, it may spontaneous lamination defect in real work to simulate.Defect totally 10, wherein test block shape ruler
Very little is long 300mm, each width 50mm in both sides, and radius of curvature 5mm, flaw size is 3mm × 3mm, and defect is arranged at equal intervals in dislocation
Cloth.Reference block can be used for supersonic detection method to checking research, the defect of integration composite structure detection applicability
Quantitative assessment analysis, can be also used for the verifying in actual work to detection device validity, to guarantee product quality.
Embodiment 3
See Fig. 1 to Fig. 5, the specific embodiment of the application is described with reference to the accompanying drawing, so as to the skill of this field
The production method that art personnel more fully understand the application test block, implementation steps (but being not limited to) are as follows::
1. test block laying
Material prepreg blanking, having a size of 350mm × 150mm(8 block), 265mm × 150mm(4 block), 205mm ×
150mm(4 block), 145mm × 150mm(4 block), 85mm × 150mm(4 block).
Intersect laying by 0 °, 45 °, 90 ° of -45 ° of four directions, avoids bending and shock resistance damage；And by design drawing into
The corresponding full laying of row and local laying.Pre-buried 1,3,5,7, No. 9 artificial defect between the 2nd floor of laying pad pasting face and the 3rd floor；?
Pre-buried 2,4,6,8, No. 10 artificial defects are distinguished at laying interior thickness.
Consideration facilitates and carries in live loss of weight, cut Area of Sample be not easy it is excessive.
2. test block forming
By the test block for completing laying, vacuum sealing plays bag in tooling, is sent into autoclave and carries out curing molding.
3. test block is processed
The surplus of each 25mm of digital control milling test block surrounding, test block final size are 300mm × 50mm × 50mm.
4. test block is identified
In non-destructive testing test block it is no there are natural flaw, whether pre-buried artificial defect detectable, defect display size and reality
Border size difference differentiates and requires are as follows: being not allow for natural flaw, all pre-buried artificial defects can detect, defect display size
With actual size difference in ± 25% range, test block is qualified effectively；Otherwise, it remakes.
Embodiment 4
It is detected by A, B, C subregion of Fig. 5:
See Fig. 6 to Figure 12, the angle the R test block made is used to separately verify phased array detection method and ultrasonic A sweep inspection
The validity of survey method method, excellent area refer to area free from defect, two kinds of detection methods have found all pre-buried 10 it is artificial
Defect, the results showed that can effectively be verified using coating composite material structure ultrasonic inspection reference test block made by the application
The applicability and detection sensitivity of all kinds of supersonic detection methods.
Example described above is only the preferred embodiment of the application, not to limit the application, all essences in the application
Within mind and principle, any modification, equivalent replacement, improvement and so on be should be included within the scope of protection of this application.
Claims (8)
1. a kind of angle R test block for composite structure ultrasound detection, which is characterized in that the angle R test block is with corner
The laminate of composite material, laminate include two sections of plates, and by corner arc transition between two sections of plates, laminate thickness is in platform
Scalariform increases；Laminate is set there are five thickness steps, the interior thickness area in the corner center of arc region of each step and nearly table
Thickness degree area is prefabricated with artificial defect respectively；The artificial defect is in the transition arc central area of laminate in dislocation arrangement；
The artificial defect is the double-deck polytetrafluoroethylene diaphragm.
2. a kind of angle R test block for composite structure ultrasound detection according to claim 1, which is characterized in that described
The double-deck polytetrafluoroethylene diaphragm is rectangular.
3. a kind of angle R test block for composite structure ultrasound detection according to claim 2, which is characterized in that described
The double-deck polytetrafluoroethylene diaphragm it is rectangular having a size of 3mm × 3mm.
4. according to claim 1, a kind of angle R test block for composite structure ultrasound detection, feature described in one of 2,3 exist
In the bilayer polytetrafluoroethylene diaphragm surface is coated with adhesive.
5. a kind of angle R test block for composite structure ultrasound detection according to claim 1, which is characterized in that described
The size of every section of plate of the laminate with the angle R is long 300mm, width 50mm, and the radius of corner circular arc is 5mm.
6. according to claim 1, a kind of angle R test block for composite structure ultrasound detection, feature described in one of 2,3,5
It is, five thickness steps of the laminate, original depth 1mm successively increases 0.5mm, step maximum gauge 3mm.
7. according to claim 1, a kind of angle R test block for composite structure ultrasound detection, feature described in one of 2,3,5
Be, the artificial defect with a thickness of 0.058 mm.
8. according to claim 1, a kind of angle R test block for composite structure ultrasound detection, feature described in one of 2,3,5
It is, the corner of the angle R test block is 90 °.
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109406629A (en) * | 2018-10-15 | 2019-03-01 | 成都飞机工业（集团）有限责任公司 | A kind of test block of the angle R and production method for composite structure ultrasound detection |
| CN112666263A (en) * | 2020-11-24 | 2021-04-16 | 北京星航机电装备有限公司 | Method for measuring welding ultrasonic detection sensitivity of lightweight wing rudder |
| CN112763578A (en) * | 2021-04-08 | 2021-05-07 | 成都飞机工业（集团）有限责任公司 | In-service integral composite material R area detection method, reference test block and test block manufacturing method |
-
2018
- 2018-10-15 CN CN201821669092.2U patent/CN209311394U/en active Active
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109406629A (en) * | 2018-10-15 | 2019-03-01 | 成都飞机工业（集团）有限责任公司 | A kind of test block of the angle R and production method for composite structure ultrasound detection |
| CN112666263A (en) * | 2020-11-24 | 2021-04-16 | 北京星航机电装备有限公司 | Method for measuring welding ultrasonic detection sensitivity of lightweight wing rudder |
| CN112666263B (en) * | 2020-11-24 | 2023-06-06 | 北京星航机电装备有限公司 | Determination method for welding ultrasonic detection sensitivity of lightweight wing rudder |
| CN112763578A (en) * | 2021-04-08 | 2021-05-07 | 成都飞机工业（集团）有限责任公司 | In-service integral composite material R area detection method, reference test block and test block manufacturing method |
| CN112763578B (en) * | 2021-04-08 | 2021-08-03 | 成都飞机工业（集团）有限责任公司 | In-service integral composite material R area detection method, reference test block and test block manufacturing method |
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