CN1134548A - Two-dimensional optical flaw detecting and displaying method and device - Google Patents
Two-dimensional optical flaw detecting and displaying method and device Download PDFInfo
- Publication number
- CN1134548A CN1134548A CN 95112734 CN95112734A CN1134548A CN 1134548 A CN1134548 A CN 1134548A CN 95112734 CN95112734 CN 95112734 CN 95112734 A CN95112734 A CN 95112734A CN 1134548 A CN1134548 A CN 1134548A
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- optical
- lining
- order
- plane
- flaw detecting
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- 230000003287 optical effect Effects 0.000 title claims abstract description 14
- 238000000034 method Methods 0.000 title abstract description 6
- 239000013307 optical fiber Substances 0.000 claims abstract description 21
- 239000002131 composite material Substances 0.000 claims abstract description 9
- 230000005540 biological transmission Effects 0.000 claims abstract description 7
- 238000003384 imaging method Methods 0.000 claims abstract description 3
- 238000012856 packing Methods 0.000 claims description 8
- 150000001875 compounds Chemical class 0.000 claims description 6
- 238000001514 detection method Methods 0.000 claims description 6
- 239000000835 fiber Substances 0.000 claims description 6
- 239000000126 substance Substances 0.000 claims description 6
- 239000005338 frosted glass Substances 0.000 claims description 3
- 238000003491 array Methods 0.000 abstract 1
- 239000000463 material Substances 0.000 description 5
- 230000003459 anti-dromic effect Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000005286 illumination Methods 0.000 description 2
- 239000011248 coating agent Substances 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- 239000004035 construction material Substances 0.000 description 1
- 230000006735 deficit Effects 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000013507 mapping Methods 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 239000000523 sample Substances 0.000 description 1
- 230000002459 sustained effect Effects 0.000 description 1
- 238000012360 testing method Methods 0.000 description 1
Images
Landscapes
- Optical Fibers, Optical Fiber Cores, And Optical Fiber Bundles (AREA)
- Investigating Materials By The Use Of Optical Means Adapted For Particular Applications (AREA)
Abstract
The flaw detecting and displaying method is that the output optical fibres of optical-fibre flaw detecting system perform distant transmission and are ordered arranged perpendicularly so as to constitute two spot arrays being one-to-one correspondent to embeded orthogonal optical fibre network, and that by means of two cylinder -lens imaging system, linear image groups of orthogonal optical trace are obtained in image plane. Through observation and record of the optical trace change, flaw and its position in composite material may be obtained. The said device consists of cylinder with mounted liner, cylinder lens, etc. inside, connecting sleeve and cover sleeve connected together.
Description
Two-dimensional optical flaw detecting display packing of the present invention and device belong to Optical Fiber Composite material damage Detection Techniques.
Optical Fiber Composite material damage Detection Techniques, be that will the be orthogonal optical fiber of network is imbedded compound substance and constituted, when composite element sustained damage, the light signal with end face output of transmission just changed thereupon in the optical fiber, thereby determines material damage situation and position.Differentiating the method for degree of impairment and position according to the variation of this light signal, is to adopt three kinds of methods so far in the world basically:
(1) compound substance of widespread use has translucent characteristic in the aviation, therefore, often adopts the way of the leakage of Direct observation member inner fiber fracture place light, differentiates the damage and the position of component inside;
(2) surface coating because of optical fiber is very thin, and permeable material can be observed the light of transmission in the optical fiber, adopts the variation of transmission light in the Direct observation optical fiber to differentiate the damage of member and the way of position so also have;
(3) utilize figure image intensifying antidromic illumination technology.At the material antidromic illumination, with the damage of video camera and image processing techniques mapping and recording materials.
This shows that above-mentioned three kinds of methods all are directly construction material to be observed or record, though directly perceived, all to could observe near test specimen, or the shooting record, do not reach the practicability requirement, thereby apply and be restricted, especially be difficult to be applied on the various aircraft such as aircraft.
The objective of the invention is to develop a kind of display packing and device thereof that can be applied to various carry-on long-range detection damage of composite materials situations and position.
The present invention is according to the cylindrical lens image-forming principle, and a luminous point can be at its picture that obtains a wire on as the plane through cylindrical lens, and its orientation is consistent with the bus of cylinder, and changes with the change of segment of a cylinder.
According to this principle, fiber-optic probe display packing of the present invention, be that the output optical fibre of Optical Fiber Composite material damage detection system is made long-distance transmissions, and do respectively to arrange in order and vertical mutually at output terminal, constitute order of arranging and the optical fiber quadrature network of imbedding one to one, the two row array of light spots that orientation is consistent, vertical mutually and main shaft intersects two cylindrical lens imaging systems of 5 °～7 ° of angles by its bus respectively when the vertical array of light spots of arranging in order of two row, then obtain constituting on as the plane by the quadrature optical track with fiber optic network one to one wire as family, observe or write down variation, just can differentiate suffered damage of compound substance and position as the plane optical track.
Accompanying drawing 1 is the schematic diagram of display packing of the present invention, in the coordinate system in the drawings, a, b, c, d, e ... with 1,2,3,4,5 ... for the luminous point of output optical fibre end face respectively with the x that imbeds the composite material fiber network to corresponding to arranging with y, (as the C among the figure and 3) lays respectively at negative, positive x place at the center of two row luminous points, and be on the object space position of two cylindrical lenses, the main shaft of two cylindrical lenses becomes 5 °～7 ° α angle with the y axle, intersect on the y axle, so its cross section becomes with x-z-plane ± the α angle.Two main shaft intersection points equal image distance to the distance of cylindrical lens, therefore, object plane with the picture plane respectively on the plane of x-z-plane and parallel x-z.Light path design has guaranteed that two wire are overlapped as the plane at family place, the picture that composition is made of the quadrature optical track, because quadrature wire optical track is with former to imbed compound substance inner fiber network corresponding one by one, thereby realized by the optical fiber long-distance transmissions, fiber optic network in the compound substance is presented on the picture plane correspondingly, change as long as observe or write down, just can clearly determine situation and particular location that damage of material is hindered as the optical track on the plane.
Accompanying drawing 2 is apparatus structure synoptic diagram of realizing display packing of the present invention.It is linked into an integrated entity sleeve (4) and cover plate cover (6) by adapter sleeve (5), its axis that two symmetric offset spread are set in the sleeve (4) becomes the cylindrical cavity of 5 °～7 ° of angles, these inner chamber two ends are separately installed with lining (3) and (9), optical fiber from the output of Optical Fiber Composite material damage detection system, introduce from lining (3) opening respectively, exit end face is provided with the orthogonal equally spaced round of two rows, output optical fibre in order from then on round pass, and fixing by end face step (2) and pressing plate (1), lining (9) endpiece is equipped with two orthogonal cylindrical lenses of its bus (8).Lining (3) fiber-optic output equals object distance (its spacing is fine-tuning) to the distance of lining (9) cylindrical lens.Cover plate cover (6) is gone up installation frosted glass (7) and is made display screen, and frosted glass (7) equals image distance to the distance of cylindrical lens, and its center is the intersection point of two cylindrical lens main shafts.
Claims (1)
1. two-dimensional optical flaw detecting display packing and device, it is characterized in that the output optical fibre of Optical Fiber Composite material damage detection system is made long-distance transmissions, and do respectively to arrange in order and vertical mutually at output terminal, constitute order of arranging and the optical fiber quadrature network of imbedding two row array of light spots one to one, vertical mutually and main shaft intersects two cylindrical lens imaging systems of 5 °～7 ° of angles by bus respectively when the vertical array of light spots of arranging in order of two row, then obtain constituting on as the plane by the quadrature optical track with fiber optic network one to one wire as family, observe or write down variation as the plane optical track, just can differentiate suffered damage of compound substance and position, the device of realizing this display packing is by adapter sleeve (5) sleeve (4) and cover plate cover (6) to be linked into an integrated entity, its axis that is provided with two symmetric offset spread in the sleeve (4) becomes the cylindrical cavity of 5 °～7 ° of angles, the cylindrical cavity two ends are separately installed with lining (3) and lining (9), lining (3) exit end face is provided with the orthogonal equidistant round of two rows that allows output optical fibre pass in order, and it is fixing by end face step (2) and pressing plate (1), lining (9) endpiece is equipped with two orthogonal cylindrical lenses of its bus (8), and frosted glass (7) is housed on the cover plate cover (6).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN95112734A CN1037027C (en) | 1995-10-24 | 1995-10-24 | Two-dimensional optical flaw detecting and displaying method and device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN95112734A CN1037027C (en) | 1995-10-24 | 1995-10-24 | Two-dimensional optical flaw detecting and displaying method and device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1134548A true CN1134548A (en) | 1996-10-30 |
| CN1037027C CN1037027C (en) | 1998-01-14 |
Family
ID=5079702
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN95112734A Expired - Lifetime CN1037027C (en) | 1995-10-24 | 1995-10-24 | Two-dimensional optical flaw detecting and displaying method and device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1037027C (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101819160B (en) * | 2009-02-26 | 2012-03-21 | 沈阳航空工业学院 | Method for positioning transverse cracks of carbon fiber composite material by using chirp grating |
| CN101819166B (en) * | 2009-02-26 | 2012-03-21 | 沈阳航空工业学院 | Method for monitoring chirped-grating of debonding and extended composite material cementing joint |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE3629430A1 (en) * | 1986-08-29 | 1988-03-10 | Messerschmitt Boelkow Blohm | MEASURING ARRANGEMENT FOR DETECTING CRACKS IN STRUCTURAL COMPONENTS OF AIRCRAFT |
| US4929828A (en) * | 1988-02-29 | 1990-05-29 | Emhart Industries, Inc. | Inspecting glass containers for line-over finish defects with bifurcated fiber optic bundle |
| CA2084819A1 (en) * | 1992-01-27 | 1993-07-28 | Ralph Edourd Frazee Jr. | In-pattern on-line coating defect detection system |
| CA2088081A1 (en) * | 1992-02-13 | 1993-08-14 | Ralph Edward Frazee Jr. | Out-of-pattern coating defect detection system |
-
1995
- 1995-10-24 CN CN95112734A patent/CN1037027C/en not_active Expired - Lifetime
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101819160B (en) * | 2009-02-26 | 2012-03-21 | 沈阳航空工业学院 | Method for positioning transverse cracks of carbon fiber composite material by using chirp grating |
| CN101819166B (en) * | 2009-02-26 | 2012-03-21 | 沈阳航空工业学院 | Method for monitoring chirped-grating of debonding and extended composite material cementing joint |
Also Published As
| Publication number | Publication date |
|---|---|
| CN1037027C (en) | 1998-01-14 |
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