CN108413888A - A kind of speckle overlay film for strain measurement - Google Patents
A kind of speckle overlay film for strain measurement Download PDFInfo
- Publication number
- CN108413888A CN108413888A CN201810513574.7A CN201810513574A CN108413888A CN 108413888 A CN108413888 A CN 108413888A CN 201810513574 A CN201810513574 A CN 201810513574A CN 108413888 A CN108413888 A CN 108413888A
- Authority
- CN
- China
- Prior art keywords
- speckle
- overlay film
- strain
- strain measurement
- organic material
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
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Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
- G01B11/00—Measuring arrangements characterised by the use of optical techniques
- G01B11/16—Measuring arrangements characterised by the use of optical techniques for measuring the deformation in a solid, e.g. optical strain gauge
Abstract
The invention belongs to field of optical measurements, are related to a kind of speckle overlay film for strain measurement, which is mainly used for making speckle used when optical measurement structural strain.The overlay film is made of light color or white organic material film, dark speckle, and the front of overlay film can be used spraying, printing or other methods and make speckle.In use, the overlay film back side can directly be relied on Electrostatic Absorption, vacuum suction or is bonded at the back side of overlay film with tested body structure surface using the methods of binder.Speckle overlay film proposed by the present invention for strain measurement, with smaller tension and good ductility, the speckle on overlay film may make to be deformed completely with the deformation by geodesic structure, the accurate measurement of strain is ensured, this process simplify speckle production processes, avoid traditional speckle making method complexity and craftsmenship, it can be achieved that speckle quick Fabrication and commercialization print.
Description
Technical field
The invention belongs to field of optical measurements, and in particular to a kind of speckle overlay film for strain measurement.
Background technology
The optical measuring technique of structural strain is highly developed and is widely used, but is needed by geodesic structure before measuring
Surface makes speckle label, and the quality of speckle directly affects the accuracy of measurement result.Traditional speckle making mostly uses
Tested body structure surface directly paints, using the methods of speckle seal.These methods usually require complicated production process and making
Skill, therefore be difficult the primary speckle for just producing high quality, and these methods are that speckle is being coated directly on tested knot
On structure surface, the pollution of sample surfaces can be caused.In addition, some tested body structure surfaces are not the planes of rule, such as cambered surface is concave-convex
Face etc., then making the difficulty bigger of speckle using conventional method.
The present invention proposes a kind of speckle overlay film for strain measurement, which has smaller tension and good prolong
Malleability can not only be fitted in various tested body structure surfaces, and the speckle on overlay film also can be completely with by the change of geodesic structure
Shape and deform, ensured strain accurate measurement.Method described in the invention simplifies speckle production process, avoids tradition
Speckle making method complexity and craftsmenship, it can be achieved that speckle quick Fabrication and commercialization print.
Invention content
The purpose of the present invention is：Design it is a kind of for optical measurement structural strain when quick Fabrication speckle overlay film.
To solve this technical problem, the technical scheme is that：A kind of speckle overlay film for strain measurement is designed, is used
The quick Fabrication of speckle when optical measurement structural strain.Including organic material film 1 and speckle 2, organic material film 1 has
There is ductility that measured surface breaks upon deformation, speckle 2 is prevented to be attached to the front of organic material film 1.
The color of the organic material film 1 is white or light-colored.
2 color of speckle is black or dark color, is different from the color of organic material film 1.
The speckle 2 is made of printing, printing or spraying method.
1 back side of organic material film is bonded by electrostatic or vacuum suction with measured surface.
Binder 3 is also contained at 1 back side of organic material film, is bonded with measured surface by binder 3.
The solution have the advantages that：The speckle of quick Fabrication when being used for optical measurement structural strain of the present invention covers
Film can not only be fitted in various tested body structure surfaces, and the speckle on overlay film also can be completely with by the deformation of geodesic structure
And deform, ensure the accurate measurement of strain.The speckle overlay film of the present invention simplifies speckle production process, avoids traditional dissipate
The complexity and craftsmenship of spot production method are, it can be achieved that the quick Fabrication of speckle and commercialization are printed.
Description of the drawings
Fig. 1 is the speckle overlay film front view for strain measurement；
Fig. 2 is the speckle overlay film left view for strain measurement；
Wherein, 1- organic material films, 2- dark colors speckle, 3- binders.
Specific implementation mode
The present invention will be further described with reference to the accompanying drawings and examples：
A kind of speckle overlay film for strain measurement of the present invention, schematic diagram such as Fig. 1.Overlay film be light color or white have
Machine material film, for film thickness between 0.1 millimeter to 0.2 millimeter, there is a dark speckle in front, dark speckle color be black or
It is dark, it is therefore an objective to be distinguished with the light color or white of film.The shallow colors such as white, pale yellow, light green can be selected in the light color of film, speckle
The colors such as dark red, dark blue, dark green can be selected in dark color.
Speckle can be produced on by printing, printing, spraying or other methods on film.Measurement process is as follows：
1, before measuring, directly rely on Electrostatic Absorption or vacuum suction by geodesic structure table the speckle overlay film made
Face, and be bonded with tested body structure surface.
When 2, measuring, when being deformed under loaded condition by geodesic structure, because overlay film has ductility, speckle thereon
It can entirely with deform without rupturing.Then, using strain measurement system to by the minor change of speckle when geodesic structure stand under load
It is analyzed, to obtain by the Strain Distribution of geodesic structure.
3, after measuring, need to only tear speckle overlay film, will not leave a trace in tested body structure surface.
The adhesives such as adhesive sticker also can be selected in the overlay film back side of the present invention, using adhesive by speckle overlay film and by geodesic structure
Surface is bonded.
Since overlay film has smaller tension and good ductility, sheet material, coiled material or the paper of folding can be made into
Open shape material.
Speckle overlay film proposed by the present invention for strain measurement can not only be fitted in various tested body structure surfaces, and
And the speckle on overlay film can also be deformed with the deformation by geodesic structure completely, ensure the accurate measurement of strain.Institute of the present invention
The method of description simplifies speckle production process, avoid traditional speckle making method complexity and craftsmenship, it can be achieved that
The quick Fabrication of speckle and commercialization are printed.
Claims (6)
1. a kind of speckle overlay film for strain measurement, it is characterised in that：The speckle overlay film for strain measurement includes
Organic material film (1) and speckle (2)；There is organic material film (1) ductility to prevent measured surface breaks upon deformation；Speckle
(2) it is attached to the front of organic material film (1).
2. the speckle overlay film according to claim 1 for strain measurement, it is characterised in that：The organic material film
(1) color is white or light-colored.
3. the speckle overlay film according to claim 1 for strain measurement, it is characterised in that：Described speckle (2) color
For black or dark color, it is different from the color of organic material film (1).
4. the speckle overlay film according to claim 1 for strain measurement, it is characterised in that：The speckle (2) uses
Printing, printing or spraying method make.
5. the speckle overlay film according to claim 1 for strain measurement, it is characterised in that：The organic material film
(1) back side is bonded by electrostatic or vacuum suction with measured surface.
6. the speckle overlay film according to claim 1 for strain measurement, it is characterised in that：The organic material film
(1) binder (3) is also contained at the back side, is bonded with measured surface by binder (3).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810513574.7A CN108413888A (en) | 2018-05-25 | 2018-05-25 | A kind of speckle overlay film for strain measurement |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810513574.7A CN108413888A (en) | 2018-05-25 | 2018-05-25 | A kind of speckle overlay film for strain measurement |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN108413888A true CN108413888A (en) | 2018-08-17 |
Family
ID=63140604
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810513574.7A Pending CN108413888A (en) | 2018-05-25 | 2018-05-25 | A kind of speckle overlay film for strain measurement |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108413888A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114088541A (en) * | 2021-11-19 | 2022-02-25 | 哈尔滨工业大学 | Experimental device and experimental method for measuring bending deformation of porous material |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH11142319A (en) * | 1997-11-13 | 1999-05-28 | Natl Res Inst For Metals | Method for measuring exfoliation and adhesion of surface coating |
| CN101240996A (en) * | 2008-03-14 | 2008-08-13 | 清华大学 | Method for making high-temperature micrometre size speckle |
| CN103090811A (en) * | 2013-01-08 | 2013-05-08 | 清华大学 | Micro speckle epoxy film preparation and transferring method |
| JP2014232041A (en) * | 2013-05-29 | 2014-12-11 | 三菱重工業株式会社 | Laser speckle strain measurement apparatus and laser speckle strain measurement method |
-
2018
- 2018-05-25 CN CN201810513574.7A patent/CN108413888A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH11142319A (en) * | 1997-11-13 | 1999-05-28 | Natl Res Inst For Metals | Method for measuring exfoliation and adhesion of surface coating |
| CN101240996A (en) * | 2008-03-14 | 2008-08-13 | 清华大学 | Method for making high-temperature micrometre size speckle |
| CN103090811A (en) * | 2013-01-08 | 2013-05-08 | 清华大学 | Micro speckle epoxy film preparation and transferring method |
| JP2014232041A (en) * | 2013-05-29 | 2014-12-11 | 三菱重工業株式会社 | Laser speckle strain measurement apparatus and laser speckle strain measurement method |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114088541A (en) * | 2021-11-19 | 2022-02-25 | 哈尔滨工业大学 | Experimental device and experimental method for measuring bending deformation of porous material |
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