CN102507589B - Laser speckle inspection method for aircraft tire - Google Patents
Laser speckle inspection method for aircraft tire Download PDFInfo
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- CN102507589B CN102507589B CN 201110306233 CN201110306233A CN102507589B CN 102507589 B CN102507589 B CN 102507589B CN 201110306233 CN201110306233 CN 201110306233 CN 201110306233 A CN201110306233 A CN 201110306233A CN 102507589 B CN102507589 B CN 102507589B
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Abstract
The invention belongs to a laser speckle inspection method for aircraft tire. The method comprises selecting a test tire with the same specification as a to-be-inspected aircraft tire, and adhering a card of known size to the tire side of the test tire and the tire cavity part at the same tangent plane as the tire side; sending the test tire into the vacuum chamber of a laser speckle inspection machine, and adjusting a camera position to the position of the card; applying a general program to inspect the card position on the test tire, adjusting the scale of a ruler in a computer, measuring the measurement size of the card by the ruler in the computer, and performing conversion between the measurement size and the actual size of the card; completely cleaning the surface and the interior of the tire cavity of the to-be-inspected aircraft tire; placing the to-be-inspected aircraft tire in a corresponding position on a lift platform surface; picking up images of the tire shoulder and two tire sides of the to-be-inspected aircraft tire on the platform surface by use of the camera; and allowing an operator to firstly determine the type of a defect in a laser speckle image, and comparing the defect size with the ruler of the laser speckle inspection machine computer marked in the laser speckle image. The method of the invention can accurately effectively judge the position and the size of a defect of a tire with internal defects.
Description
Technical field
The invention belongs to the air material field of non destructive testing, especially a kind of laser speckle inspection method for aircraft tire.
Background technology
The harmless inspecting method that existing aircraft tyre is commonly used comprises: visual examination, air tube inspection, X-ray, ultrasound wave, infrared ray and holograph etc., but every kind of inspection method has deficiency separately, the inspection method that has not enough even can not remedy with additive method, the a complete set of inspection can be reduced work efficiency again, and international and domestic standard disunity.
Summary of the invention
The objective of the invention is to overcome the deficiencies in the prior art, the laser speckle inspection method for aircraft tire that can effectively check the material inherent vice of sailing under a kind of prerequisite not damaging the boat material is provided.
According to technical scheme provided by the invention, described laser speckle inspection method for aircraft tire comprises the steps:
The test tire of a, selection and aircraft tyre same specification to be checked is pasted the card of known dimensions on the sidewall of test tire and with the position, tire chamber of the same tangent plane in sidewall;
B, will test tire and send in the vacuum chamber of laser speckle inspection machine, the vacuum degree control of vacuum chamber is at 5000 ~ 8000Pa, the test tire lies low and is placed on the Lifting platform of laser speckle inspection machine, adjust the camera position of laser speckle inspection machine to the position of card, the position that this status requirement phase function will check is filmed fully, and in checking process the rotation of test tire can grazing to camera, after camera is adjusted, record the level of current camera, the numerical value of vertical and angle;
The universal program of c, application laser speckle inspection machine checks the card position on the test tire, adjust the scale of scale in the laser speckle inspection machine Computer, tape measure in the laser speckle inspection machine computing machine goes out the measurement size of card, the measurement size of card and the physical size of same card are converted, in order in the normal inspection process, can determine the size of defective;
D, will thoroughly clean out in aircraft tyre surface to be checked and the tire chamber;
E, the aircraft tyre to be checked that will clean out lie low and are placed on the Lifting platform correspondence position of the tire laser speckle inspection machine laid of test tire;
The camera of f, laser speckle inspection machine is taken pictures to the crown and two sidewalls that are placed in the aircraft tyre to be checked on its table top, after the camera of laser speckle inspection machine is taken pictures, can prompting operation person on this laser speckle image, whether there be defective, defective locations and defect size, and can go out scale in the laser speckle inspection machine computing machine at this laser speckle image subscript;
G, operator at first determine the kind of defective on the laser speckle image, and this defect size and the scale that goes out in the laser speckle inspection machine computing machine at this laser speckle image subscript are compared, and confirm whether the size of this defective belongs within the standard.
The accurate and effective judgement of the present invention's energy has defective locations and the size of the tire of inherent vice, effectively raises the safe reliability of retreads, has improved the renovation quality of tire, guarantees the safety of aviation operation.
Embodiment
The invention will be further described below in conjunction with specific embodiment.
A kind of laser speckle inspection method for aircraft tire comprises the steps:
The test tire of a, selection and aircraft tyre same specification to be checked is pasted the card of known dimensions on the sidewall of test tire and with the position, tire chamber of the same tangent plane in sidewall;
B, will test tire and send in the vacuum chamber of laser speckle inspection machine, the vacuum degree control of vacuum chamber is at 5000 ~ 8000Pa, the test tire lies low and is placed on the Lifting platform of laser speckle inspection machine, adjust the camera position of laser speckle inspection machine to the position of card, the position that this status requirement phase function will check is filmed fully, and in checking process the rotation of test tire can grazing to camera, after camera is adjusted, record the level of current camera, the numerical value of vertical and angle;
The universal program of c, application laser speckle inspection machine checks the card position on the test tire, adjust the scale of scale in the laser speckle inspection machine Computer, tape measure in the laser speckle inspection machine computing machine goes out the measurement size of card, the measurement size of card and the physical size of same card are converted, in order in the normal inspection process, can determine the size of defective;
D, will thoroughly clean out in aircraft tyre surface to be checked and the tire chamber;
E, the aircraft tyre to be checked that will clean out lie low and are placed on the Lifting platform correspondence position of the tire laser speckle inspection machine laid of test tire;
The camera of f, laser speckle inspection machine is taken pictures to the crown and two sidewalls that are placed in the aircraft tyre to be checked on its table top, after the camera of laser speckle inspection machine is taken pictures, can prompting operation person on this laser speckle image, whether there be defective and defect size, and can go out scale in the laser speckle inspection machine computing machine at this laser speckle image subscript;
G, operator at first determine the kind of defective on the laser speckle image, and this defect size and the scale that goes out in the laser speckle inspection machine computing machine at this laser speckle image subscript are compared, and confirm whether the size of this defective belongs within the standard.
During particular exam, in order to prevent the zone of omission, sidewall, both sides and the crown of aircraft tyre to be checked respectively is divided into 9 intervals, a tires is divided into 27 intervals altogether.
1, the tyre bead portion in the tire both sides carries out mark, usually can be labeled as the A face in the one side that the tire sequence number is arranged, and corresponding surface then is the B face, and markd position will keep vertical with ground on hoistable platform.This operation is for: one, prevents that tire from misplacing check surface in the process of artificial turn-over; Two, after finding defective, can draw a circle to approve more accurately the scope of defective.
2, the flow process card number of input tire in computing machine selects the program of corresponding tire specification to carry out tyre inspection.Since tire in use procedure, for a long time put or the impact of some other factors under deformation can occur, therefore, in checking process, have camera position and the position phenomenon devious that will check.Can in time adjust camera position in this case, make it satisfy requirement among the step c, avoid undetected.
3, carry out the single face inspection such as needs, can select single program corresponding under this specification program, but need in addition input flow process card number, namely add suffix at former flow process card number, in order to distinguish.
4, carry out the inspection of assigned address such as needs, can manually adjust camera to referring to that the position checks according to actual conditions.For example, when finding to have anomaly image or defect picture not obvious in the picture of inspection, just can adopt this way, and in conjunction with suitably increasing vacuum tightness.
5, judge the type of defective according to image, defective can be divided into delamination and bubble etc.Each laser speckle image is a corresponding image in kind all, and mark is carried out in the position that therefore can draw a circle to approve eaily defective, marks accurately defective locations.
6, the quality of judging tire according to size and the degree of depth of defective.Tire through defective polishing (refer to polish demarcating good fault location, the degree of depth is not as good as carcass) will be rechecked according to above-mentioned the 4th requirement, such as the processing of then cancelling of defectiveness still.
The criterion of qualified aircraft tyre is as follows:
1, blibbing diameter in sidewall is not more than 3.0mm, and the degree of depth is no more than 1.0mm, and no more than 3 of every side bubble;
2, tyre bead blibbing diameter is no more than 1.0mm, and no more than 3 of every side bubble;
3, tire toe bubble area is not more than 20mm
2, no more than 3 places of every tires;
4, the diameter of inner liner bubbling is not more than 3.0mm, and the degree of depth is no more than 1/3 of specific thickness, no more than 3 places of every tires;
5, the crown surface bubble diameter is not more than 3.0mm, and the degree of depth is no more than 25% of tread thickness, and no more than 2 places;
6, the too late carcass of the degree of depth, and the delamination area is not more than 9mm
2
7, sidewall and tyre bead junction width are not more than 1mm, and length is not more than the defective of 1/3 circumference;
8, a position is subdued on the sidewall, and aging or be full of cracks is not more than quarter turn.
Embodiment 1
Bridgestone tire specification 27 * 7.75-15 12PR
One, setting parameter
1, the card that to tailor two areas be 100mm * 100mm sticks on respectively the position, sidewall of tire chamber and tangent plane same with it;
2, will test tire and be placed on the shovel loader, the bootload button is transferred to tire in the vacuum chamber;
3, select MOVE HEAD button in the computing machine, first general input level numerical value, vertical numerical value, angle numerical value and rotation numerical in the window that ejects, with the card that guarantees to paste in the coverage of camera;
4, the manual fine-tuning button in the use window is with correlation values precision and record.Horizontal numerical value: 190mm, vertical numerical value: 350mm, angle numerical value: 90 ° (sidewall parameter);
Whether the location status that keeps camera after 5, numerical value is determined selects the TEST SECTOR button in the computing machine to carry out the appointed part inspection, reliable to determine the parameter setting;
6, select MOVE HOME button in the computing machine after parameter is confirmed, camera is set back;
7, above-mentioned steps is just finished the setting of the inspection parameter at a position of crown or sidewall, and the step that repeats 1-5 is set the parameter of another part.Horizontal numerical value: 28mm, vertical numerical value: 616mm, angle numerical value: 0 ° (crown parameter);
8, the parameter with all affirmations is input to be examined in the parameter setting window of tire specification, label and inspection area name, is the parameter of the crown inspection of this brand specification tire such as Bridgestone 27 * 7.75-15 12PR-CR.Setting simultaneously institute's subregion quantity is that 9 zones and engineer's scale are 1.25:1.Vacuum tightness is set as 5000Pa;
9,8 setting is integrated in order the inspection of whole piece tire.As
The full inspection of Bridgestone 27 * 7.75-15 12PR-MS------
Comprise: Bridgestone 27 * 7.75-15 12PR-SIDE------sidewall
FLIP TYRE------turn-over
Bridgestone 27 * 7.75-15 12PR-CR------crown
Bridgestone 27 * 7.75-15 12PR-SIDE------sidewall
Two, formal inspection
1, the shop order card number 1108LG(002 that tire is corresponding)-017 adds suffix A1 input computing machine, selects corresponding scrutiny program Bridgestone 27 * 7.75-15 12PR-MS;
2, at the former tire 908FT142 of tire, the tyre bead place of 27SEP08 place face is labeled as the A face, and corresponding surface is labeled as the B face;
3, tire is pushed to shovel loader, outside A faces, make the transmission direction of mark and tire on same straight line;
4, tyre inspection is complete go out vacuum chamber after, again push to shovel loader, make outside B faces, simultaneously the single card number of input service again;
5, open 1108LG(002 after having checked)-the 017A1 file, whether the contrast criterion of acceptability checks in 27 pictures defectiveness image totally, the result is the delamination of position, sidewall, diameter 4mm, overproof 3mm, this tire is judged to be defective, the input tire information is finished inspection.
Embodiment 2
GOODYEAR tire specification H44.5 * 16.5-21 28PR
One, setting parameter
The step that each specification tire parameter is set is basically identical.But because the crown of this specification is wider, and the opening in rim of the mouth is smaller relatively, so cause camera the crown position can not be checked through fully.Therefore, similarly situation will be divided into crown up and down two part inspections.Specific as follows:
The full inspection of GOODYEAR 44.5 * 16.5-21 28PR-MS1------
Comprise: GOODYEAR 44.5 * 16.5-21 28PR-SIDE------sidewall
GOODYEAR 44.5 * 16.5-21 28PR-SH------tire shoulder
FLIP TYRE------turn-over
GOODYEAR 44.5 * 16.5-21 28PR-SIDE------sidewall
GOODYEAR 44.5 * 16.5-21 28PR-SH------tire shoulder
Sidewall parameter: horizontal 268mm, vertical 110mm, 90 ° of angles, vacuum tightness 6000Pa.
Tire shoulder parameter: horizontal 80mm, vertical 560mm, angle-20 °, vacuum tightness 8000Pa.
Each inspection area is divided into 9 zones, and engineer's scale is 0.8:1.
Two, formal inspection
1, the shop order card number 1106LG(003 that tire is corresponding)-012 adds suffix A1 input computing machine, selects corresponding scrutiny program GOODYEAR 44.5 * 16.5-21 28PR-MS1;
2, be labeled as the A face at the tyre bead place of the former tire of tire number 82145126 place faces, corresponding surface is labeled as the B face;
3, tire is pushed to shovel loader, outside A faces, make the transmission direction of mark and tire on same straight line;
4, tyre inspection is complete go out vacuum chamber after, again push to shovel loader, make outside B faces, simultaneously the single card number of input service again;
5, open 1106LG(003 after having checked)-the 012A1 file, whether the contrast criterion of acceptability checks in 36 pictures defectiveness image totally, and the result is the equal zero defect image in each position, and it is qualified that this tire is judged to be, and the input tire information is finished inspection.
Embodiment 3
GOODYEAR tire specification 27 * 7.75-15 12PR, former tire numbers 90691275.
1, find in the checking process that there is delamination on the sidewall, actual diameter 3mm, the contrast real image goes out the position of defective at the tire subscript;
2, defective one side is placed on the shovel loader outwardly, is transferred in the vacuum chamber;
3, select MOVE HEAD button in the computing machine, the parameter that this tire sidewall of input checks in window, and the adjustment anglec of rotation to the function of taking a picture comprises mark wherein;
4, select the TEST SECTOR button in the computing machine to check, to confirm that mark is accurate;
5, mark is polished, grinding depth is ended body ply;
6, the operation of repeating step 2-4 still exists through looking into defective;
7, judge defective at carcass, this tire is defective.
Claims (1)
1. a laser speckle inspection method for aircraft tire is characterized in that this inspection method comprises the steps:
The test tire of a, selection and aircraft tyre same specification to be checked is pasted the card of known dimensions on the sidewall of test tire and with the position, tire chamber of the same tangent plane in sidewall;
B, will test tire and send in the vacuum chamber of laser speckle inspection machine, the vacuum degree control of vacuum chamber is at 5000 ~ 8000Pa, the test tire lies low and is placed on the table top of laser speckle inspection machine, adjust the camera position of laser speckle inspection machine to the position of card, the position that this status requirement phase function will check is filmed fully, and in checking process the rotation of test tire can grazing to camera, after camera is adjusted, record the level of current camera, the numerical value of vertical and angle;
The universal program of c, application laser speckle inspection machine checks the card position on the test tire, adjust the scale of scale in the laser speckle inspection machine Computer, tape measure in the computing machine of laser speckle inspection machine goes out the measurement size of card, the measurement size of card and the physical size of same card are converted, in order in the normal inspection process, can determine the size of defective;
D, will thoroughly clean out in aircraft tyre surface to be checked and the tire chamber;
E, the aircraft tyre to be checked that will clean out lie low and are placed on the Lifting platform correspondence position of the tire laser speckle inspection machine laid of test tire;
The camera of f, laser speckle inspection machine is taken pictures to the crown and two sidewalls that are placed in the aircraft tyre to be checked on its table top, after the camera of laser speckle inspection machine is taken pictures, can prompting operation person on this laser speckle image, whether there be defective, defective locations and defect size, and can go out scale in the computing machine of laser speckle inspection machine at this laser speckle image subscript;
G, operator at first determine the kind of defective on the laser speckle image, and this defect size and scale in the computing machine that goes out the laser speckle inspection machine at this laser speckle image subscript are compared, and confirm whether the size of this defective belongs within the standard.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201110306233 CN102507589B (en) | 2011-10-11 | 2011-10-11 | Laser speckle inspection method for aircraft tire |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201110306233 CN102507589B (en) | 2011-10-11 | 2011-10-11 | Laser speckle inspection method for aircraft tire |
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| Publication Number | Publication Date |
|---|---|
| CN102507589A CN102507589A (en) | 2012-06-20 |
| CN102507589B true CN102507589B (en) | 2013-05-29 |
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| CN 201110306233 Expired - Fee Related CN102507589B (en) | 2011-10-11 | 2011-10-11 | Laser speckle inspection method for aircraft tire |
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Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110678726B (en) * | 2017-06-12 | 2022-02-25 | 倍耐力轮胎股份公司 | Method for inspecting a tyre |
| CN108181321B (en) * | 2017-12-29 | 2021-03-02 | 杭州清本科技有限公司 | System for simultaneously carrying out laser speckle nondestructive testing on multiple shipboard aircraft tires |
| CN112945125B (en) * | 2021-03-26 | 2023-08-11 | 中国人民解放军火箭军工程大学 | Non-contact tire rolling deformation characteristic test method |
| CN114088745A (en) * | 2022-01-14 | 2022-02-25 | 山东兴达轮胎有限公司 | Method for confirming tire imaging accuracy by checking area of standard block by X-ray |
| CN117233171B (en) * | 2023-10-31 | 2024-09-06 | 中国科学院力学研究所 | On-site detection and evaluation method for health of aviation tire |
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|---|---|---|---|---|
| US5668731A (en) * | 1994-02-24 | 1997-09-16 | Pirelli Coordinamento Pneumatici S.P.A. | Method and apparatus for plotting a trace pattern on the tread band of a tire |
| CN1632543A (en) * | 2004-12-22 | 2005-06-29 | 广州华工百川自控科技有限公司 | Laser speckle tire non-destructive detector and non-destructive testing method utilizing the same |
| CN101738399A (en) * | 2008-11-26 | 2010-06-16 | 青岛高校软控股份有限公司 | Tyre laser speckle inspection machine and inspection method thereof |
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2011
- 2011-10-11 CN CN 201110306233 patent/CN102507589B/en not_active Expired - Fee Related
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5668731A (en) * | 1994-02-24 | 1997-09-16 | Pirelli Coordinamento Pneumatici S.P.A. | Method and apparatus for plotting a trace pattern on the tread band of a tire |
| CN1632543A (en) * | 2004-12-22 | 2005-06-29 | 广州华工百川自控科技有限公司 | Laser speckle tire non-destructive detector and non-destructive testing method utilizing the same |
| CN101738399A (en) * | 2008-11-26 | 2010-06-16 | 青岛高校软控股份有限公司 | Tyre laser speckle inspection machine and inspection method thereof |
Non-Patent Citations (4)
| Title |
|---|
| 新型激光散斑轮胎无损检测仪开发及应用;肖玉霜 等;《橡塑技术与装备》;20110331(第3期);全文 * |
| 曾启林 等.航空轮胎激光无损检测技术.《轮胎工业》.2005,第25卷 |
| 肖玉霜 等.新型激光散斑轮胎无损检测仪开发及应用.《橡塑技术与装备》.2011,(第3期), |
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