CN109406629A - A kind of test block of the angle R and production method for composite structure ultrasound detection - Google Patents
A kind of test block of the angle R and production method for composite structure ultrasound detection Download PDFInfo
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- CN109406629A CN109406629A CN201811199279.5A CN201811199279A CN109406629A CN 109406629 A CN109406629 A CN 109406629A CN 201811199279 A CN201811199279 A CN 201811199279A CN 109406629 A CN109406629 A CN 109406629A
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- 238000012360 testing method Methods 0.000 title claims abstract description 66
- 238000001514 detection method Methods 0.000 title claims abstract description 45
- 239000002131 composite material Substances 0.000 title claims abstract description 28
- 238000002604 ultrasonography Methods 0.000 title claims abstract description 21
- 238000004519 manufacturing process Methods 0.000 title claims abstract description 12
- 230000007547 defect Effects 0.000 claims abstract description 59
- 229920001343 polytetrafluoroethylene Polymers 0.000 claims description 14
- 239000004810 polytetrafluoroethylene Substances 0.000 claims description 14
- -1 polytetrafluoroethylene Polymers 0.000 claims description 11
- 230000007704 transition Effects 0.000 claims description 6
- 238000009659 non-destructive testing Methods 0.000 claims description 5
- 239000000463 material Substances 0.000 claims description 4
- 239000000853 adhesive Substances 0.000 claims description 3
- 230000001070 adhesive effect Effects 0.000 claims description 3
- 238000005452 bending Methods 0.000 claims description 3
- 238000003801 milling Methods 0.000 claims description 3
- 238000000465 moulding Methods 0.000 claims description 3
- 238000007789 sealing Methods 0.000 claims description 3
- 230000035939 shock Effects 0.000 claims description 3
- 238000012545 processing Methods 0.000 claims description 2
- 230000010354 integration Effects 0.000 abstract description 8
- 238000003475 lamination Methods 0.000 abstract description 6
- 238000003825 pressing Methods 0.000 abstract description 2
- 238000011160 research Methods 0.000 abstract description 2
- 230000002269 spontaneous effect Effects 0.000 abstract description 2
- 238000000034 method Methods 0.000 description 10
- 238000010586 diagram Methods 0.000 description 5
- 238000013461 design Methods 0.000 description 3
- 239000010410 layer Substances 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 2
- 238000007689 inspection Methods 0.000 description 2
- 239000012528 membrane Substances 0.000 description 2
- 238000004088 simulation Methods 0.000 description 2
- 238000007711 solidification Methods 0.000 description 2
- 230000008023 solidification Effects 0.000 description 2
- 239000002344 surface layer Substances 0.000 description 2
- 238000004458 analytical method Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000011248 coating agent Substances 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- 239000000805 composite resin Substances 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 239000012141 concentrate Substances 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000004744 fabric Substances 0.000 description 1
- 239000000835 fiber Substances 0.000 description 1
- XUCNUKMRBVNAPB-UHFFFAOYSA-N fluoroethene Chemical compound FC=C XUCNUKMRBVNAPB-UHFFFAOYSA-N 0.000 description 1
- 239000003292 glue Substances 0.000 description 1
- 208000020442 loss of weight Diseases 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000005192 partition Methods 0.000 description 1
- 230000035945 sensitivity Effects 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 238000012795 verification Methods 0.000 description 1
Classifications
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N29/00—Investigating or analysing materials by the use of ultrasonic, sonic or infrasonic waves; Visualisation of the interior of objects by transmitting ultrasonic or sonic waves through the object
- G01N29/04—Analysing solids
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N1/00—Sampling; Preparing specimens for investigation
- G01N1/28—Preparing specimens for investigation including physical details of (bio-)chemical methods covered elsewhere, e.g. G01N33/50, C12Q
- G01N1/286—Preparing specimens for investigation including physical details of (bio-)chemical methods covered elsewhere, e.g. G01N33/50, C12Q involving mechanical work, e.g. chopping, disintegrating, compacting, homogenising
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N29/00—Investigating or analysing materials by the use of ultrasonic, sonic or infrasonic waves; Visualisation of the interior of objects by transmitting ultrasonic or sonic waves through the object
- G01N29/22—Details, e.g. general constructional or apparatus details
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- Physics & Mathematics (AREA)
- Health & Medical Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Chemical & Material Sciences (AREA)
- Analytical Chemistry (AREA)
- Biochemistry (AREA)
- General Health & Medical Sciences (AREA)
- General Physics & Mathematics (AREA)
- Immunology (AREA)
- Pathology (AREA)
- Acoustics & Sound (AREA)
- Investigating Or Analyzing Materials By The Use Of Ultrasonic Waves (AREA)
Abstract
The present invention 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 R test block of the invention 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 invention belongs to technical field of nondestructive testing, it is more particularly related to fibre resin based composites knot
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 technical problem to be solved in the present invention is that providing 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 present invention, 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 invention, 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；Pre-buried artificial defect is distinguished at laying interior thickness;
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 circular arc half
Diameter 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 practical ruler
Very little difference differentiates and requires are as follows: being not allow for natural flaw, all pre-buried artificial defects can detect, defect display size and reality
For border size difference in ± 25% range, test block is qualified effectively；Otherwise, it remakes.
The beneficial effects of the present invention are: by manually being lacked 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 test block defect arrangement schematic diagram in the angle R of the invention.
Fig. 2 is test block solid cloth schematic diagram in the angle R of the invention.
Fig. 3 is that nearly surface layer artificial defect schematic diagram is preset in the angle R of the present invention test block.
Fig. 4 is that middle layer artificial defect schematic diagram is preset in the angle R of the present invention test block.
Fig. 5 is test block laying in the angle R of the present invention 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 present invention, the angle R test block is that band turns
The laminate of the composite material at angle, 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, in the corner center of arc region of each step
Between caliper zones and nearly skin depth area be prefabricated with artificial defect respectively；The artificial defect is in the transition arc center of laminate
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.Bilayer poly- four
Vinyl fluoride membrane 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 present invention, the reference block
For the structure of one " R angleplied laminate pressing plate step ", interior thickness area and nearly table caliper zones difference are prefabricated in five thickness steps
Artificial defect, may spontaneous lamination defect in real work to simulate.Defect totally 10, wherein test block outer dimension be
Long 300mm, each width 50mm in both sides, radius of curvature 5mm, flaw size are 3mm × 3mm, and defect is arranged at equal intervals in dislocation.It is right
It can be used for supersonic detection method than test block to quantify the integration composite structure detection checking research of applicability, defect
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, a specific embodiment of the invention is described with reference to the accompanying drawing, so as to those skilled in the art
The production method that member more fully understands test block of the present invention, 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 pieces), 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 practical ruler
Very little difference differentiates and requires are as follows: being not allow for natural flaw, all pre-buried artificial defects can detect, defect display size and reality
For border 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 detection side
The validity of method method, excellent area refer to that area free from defect, two kinds of detection methods have found all 10 pre-buried artificial defects,
The result shows that can effectively be verified using coating composite material structure ultrasonic inspection reference test block made by the present invention all kinds of
The applicability and detection sensitivity of supersonic detection method.
Example described above is only presently preferred embodiments of the present invention, is not intended to limit the invention, all in essence of the invention
Within mind and principle, any modification, equivalent replacement, improvement and so on be should all be included in the protection scope of the present invention.
Claims (9)
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. a kind of angle R test block for composite structure ultrasound detection described in one of according to claim 1,2,3,5, special
Sign is that five thickness steps of the laminate, original depth 1mm successively increases 0.5mm, step maximum gauge 3mm.
7. a kind of angle R test block for composite structure ultrasound detection described in one of according to claim 1,2,3,5, special
Sign is, the artificial defect with a thickness of 0.058 mm.
8. a kind of angle R test block for composite structure ultrasound detection described in one of according to claim 1,2,3,5, special
Sign is that the corner of the angle R test block is 90 °.
9. a kind of production method of the angle the R test block for composite structure ultrasound detection, which is characterized in that 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；Pre-buried artificial defect is distinguished at laying interior thickness;
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 circular arc half
Diameter 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 practical ruler
Very little difference differentiates and requires are as follows: being not allow for natural flaw, all pre-buried artificial defects can detect, defect display size and reality
For border size difference in ± 25% range, test block is qualified effectively；Otherwise, it remakes.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811199279.5A CN109406629A (en) | 2018-10-15 | 2018-10-15 | A kind of test block of the angle R and production method for composite structure ultrasound detection |
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| CN201811199279.5A CN109406629A (en) | 2018-10-15 | 2018-10-15 | A kind of test block of the angle R and production method for composite structure ultrasound detection |
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Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110057918A (en) * | 2019-05-29 | 2019-07-26 | 山东大学 | Damage of composite materials quantitative identification method and system under strong noise background |
| CN110084786A (en) * | 2019-04-04 | 2019-08-02 | 中国兵器科学研究院宁波分院 | Automatic defect identification method for digital X-ray image with gradually-changed background |
| CN110554094A (en) * | 2019-07-22 | 2019-12-10 | 中国航空工业集团公司济南特种结构研究所 | Artificial simulation defect and preparation method thereof |
| CN112683933A (en) * | 2020-11-30 | 2021-04-20 | 北京星航机电装备有限公司 | Method for measuring radiation sensitivity of additive manufacturing multilayer structure detection |
| CN112763583A (en) * | 2021-04-07 | 2021-05-07 | 成都飞机工业（集团）有限责任公司 | Calibration block for ultrasonic phased array sector scanning and manufacturing and using methods |
| 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 |
| CN112883533A (en) * | 2019-11-29 | 2021-06-01 | 上海飞机制造有限公司 | Composite material C-shaped beam filament laying method and system, filament laying machine and storage medium |
| CN113324902A (en) * | 2021-05-13 | 2021-08-31 | 山东非金属材料研究所 | Reference block for composite armor plate debonding defect knocking detection and preparation method thereof |
| CN113758769A (en) * | 2020-06-05 | 2021-12-07 | 中国航发商用航空发动机有限责任公司 | Method for manufacturing defective test block of adhesive bonding structure |
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Cited By (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110084786A (en) * | 2019-04-04 | 2019-08-02 | 中国兵器科学研究院宁波分院 | Automatic defect identification method for digital X-ray image with gradually-changed background |
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| CN110554094B (en) * | 2019-07-22 | 2021-10-15 | 中国航空工业集团公司济南特种结构研究所 | Artificial simulation defect and preparation method thereof |
| CN110554094A (en) * | 2019-07-22 | 2019-12-10 | 中国航空工业集团公司济南特种结构研究所 | Artificial simulation defect and preparation method thereof |
| CN112883533B (en) * | 2019-11-29 | 2024-04-30 | 上海飞机制造有限公司 | Composite material C-shaped beam wire laying method, system, wire laying machine and storage medium |
| CN112883533A (en) * | 2019-11-29 | 2021-06-01 | 上海飞机制造有限公司 | Composite material C-shaped beam filament laying method and system, filament laying machine and storage medium |
| CN113758769B (en) * | 2020-06-05 | 2022-12-27 | 中国航发商用航空发动机有限责任公司 | Method for manufacturing defective test block of adhesive bonding structure |
| CN113758769A (en) * | 2020-06-05 | 2021-12-07 | 中国航发商用航空发动机有限责任公司 | Method for manufacturing defective test block of adhesive bonding structure |
| CN112683933A (en) * | 2020-11-30 | 2021-04-20 | 北京星航机电装备有限公司 | Method for measuring radiation sensitivity of additive manufacturing multilayer structure detection |
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