CN107219109A - A kind of labyrinth surface crack testing method based on photosensitive resin - Google Patents
A kind of labyrinth surface crack testing method based on photosensitive resin Download PDFInfo
- Publication number
- CN107219109A CN107219109A CN201710578566.6A CN201710578566A CN107219109A CN 107219109 A CN107219109 A CN 107219109A CN 201710578566 A CN201710578566 A CN 201710578566A CN 107219109 A CN107219109 A CN 107219109A
- Authority
- CN
- China
- Prior art keywords
- photosensitive resin
- crack
- labyrinth
- ultraviolet light
- solidification
- 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.)
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Classifications
-
- 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
-
- 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
- G01B11/02—Measuring arrangements characterised by the use of optical techniques for measuring length, width or thickness
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- 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
- G01B11/22—Measuring arrangements characterised by the use of optical techniques for measuring depth
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
- G01B15/00—Measuring arrangements characterised by the use of electromagnetic waves or particle radiation, e.g. by the use of microwaves, X-rays, gamma rays or electrons
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N21/00—Investigating or analysing materials by the use of optical means, i.e. using sub-millimetre waves, infrared, visible or ultraviolet light
- G01N21/84—Systems specially adapted for particular applications
- G01N21/88—Investigating the presence of flaws or contamination
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N23/00—Investigating or analysing materials by the use of wave or particle radiation, e.g. X-rays or neutrons, not covered by groups G01N3/00 – G01N17/00, G01N21/00 or G01N22/00
- G01N23/22—Investigating or analysing materials by the use of wave or particle radiation, e.g. X-rays or neutrons, not covered by groups G01N3/00 – G01N17/00, G01N21/00 or G01N22/00 by measuring secondary emission from the material
Abstract
The present invention provides a kind of labyrinth surface crack testing method based on photosensitive resin.This method is directed to the labyrinth containing face crack, and using Sun-shading type syringe, the photosensitive resin of liquid is sprayed at into face crack position；While spraying, photosensitive resin is irradiated using handheld ultraviolet light source, the photosensitive resin of liquid is gradually cured as solid, while face crack length, pattern by labyrinth etc. is replicated.Afterwards, the photosensitive resin after solidification is peeled off from body structure surface, be placed under light microscope or ESEM, crack length, observation crack morphology are accurately measured, so that evaluation structure safe condition.Described surface crack testing method is simple to operate, can accurately and fast detect the crackle on the labyrinth such as gas turbine engine blade, pressure vessel, automobile case, building surface, solves production, working site and is difficult detection or undetectable problem.
Description
Technical field
The invention belongs to crack detection technical field, and in particular to a kind of labyrinth face crack based on photosensitive resin
Detection method and reproducting method.
Background technology
Statistics shows that the structural failure caused by fatigue, fracture accounts for 80% or so of current structure failure.In aviation
In the equipment such as engine, fatigue, fracture failure also can result in the major accident of fatal crass.Carry out the crackle of structure in being on active service
Detection, the dangerous crackle in structure can be found in time, crack length is determined, so as to be repaired or replaced.But it is currently employed
The means such as ultrasound detection, fluoroscopic examination, accuracy of detection is limited and is difficult to detect crackle three-dimensional dimension, particularly with surface
For baroque structure, such as blade of aviation engine, pressure vessel, automobile case.
The content of the invention
The technology of the present invention solves problem：The problem of being difficult to accurate detection for current labyrinth face crack there is provided
A kind of labyrinth surface crack testing method based on photosensitive resin, it is simple to operate, it can accurately and fast detect gas turbine
The crackle on the labyrinth such as engine blade, pressure vessel, automobile case, building surface, solves production, working site and is difficult
Detection or undetectable problem.
The technical solution adopted by the present invention is：A kind of labyrinth surface crack testing method based on photosensitive resin, its
Feature is：Using photosensitive resin, Sun-shading type syringe and handheld ultraviolet light source, the face crack of labyrinth is examined
Survey；Photosensitive resin is housed, it is visible that photosensitive resin is sprayed into surface naked eyes using Sun-shading type syringe inside Sun-shading type syringe
Fine crack or doubtful crack position, while being irradiated using handheld ultraviolet light source to photosensitive resin, photosensitive tree occurs solid
Change, while replicating the microscopic appearance of face crack；Afterwards, the photosensitive resin after solidification peeled off from body structure surface, be placed in light
Learn under microscope or ESEM, can accurate surveying face crack state, measurement surface crack length, width, depth dimensions；
It is liquid under the photosensitive resin stored condition, but under the ultraviolet light of 0.25~0.3 micron wave length, occurs
Polymerisation is simultaneously cured as rapidly solid-state；The handheld ultraviolet light source 3 is the ultraviolet light of 0.25~0.3 micron wave length；
The Sun-shading type infuser base material uses polytetrafluoroethylene (PTFE), and matrix material outer wall sprays ultraviolet screener first
Agent, the ultraviolet light screener is carbon black or zinc oxide, is then wrapped up using heat shrinkage film, can shield wavelength 0.01~0.4
The ultraviolet light of micron.
The liquid viscosity of the photosensitive resin is less than 300cps, reduces as far as possible between liquid photosensitive resin and syringe inwall
Stiction force；Photosensitive resin occurs cured strength and is more than 30MPa, it is ensured that do not deformed when being removed after photosensitive resin solidification；
Copying surface resolution ratio is up to 0.5 micron after photosensitive resin 1 solidifies, and can accurately replicate crack length, width and elevation information；
Photosensitive resin hardening time is less than 10 minutes, it is to avoid the long-time of object to be detected is shut down.
It is a kind of to labyrinth surface-rendering method, after described photosensitive resin solidification, can with profit with the aforedescribed process,
Secondary duplication is carried out for the photosensitive resin surface of solidification, so as to realize that the reduction on labyrinth surface reproduces.
The principle of the present invention is：, can be along machining when the photosensitive resin of liquid is sprayed onto labyrinth surface
The surface microstructure flowing of formation, including face crack.When the ultraviolet light liquid photosensitive resin using certain wavelength,
Resin occurs polymerization and is changed into solid-state, and the photosensitive resin after solidification replicates the microstructure of body structure surface, includes the shape of crackle
Looks.Afterwards, the photosensitive resin after solidification is removed, using observation methods such as light microscope or ESEMs, can observes multiple
The pattern of miscellaneous body structure surface crackle simultaneously accurately measures crack size.
It is of the invention compared with the crack detection means such as existing ultrasound detection, fluoroscopic examination, it is high, easy to operate etc. with precision
Feature, is in particular in the following aspects：
(1) present invention can accurate replicated surfaces crack morphology, after light microscope or scanning electron microscopic observation solidification
Resin, can the accurately length of measurement surface crackle, width and depth, dimensional accuracy can reach 0.5 micron.
(2) present invention can easily measure the position that inner chamber, turning etc. are difficult measurement, and simple to operate, and resin is solid
Laboratory Observation can be taken back after change, does not influence equipment or mechanism to work.
Brief description of the drawings
Fig. 1 is the system schematic of the inventive method；
Fig. 2 is Sun-shading type syringe schematic diagram；
Fig. 3 is to utilize measurement structure surface of internal cavity crack length schematic diagram of the present invention；
Fig. 4 once replicates for photosensitive resin in the present invention, secondary print effect schematic diagram, and wherein a is once replicates, and b is
It is secondary to replicate.
Drawing reference numeral explanation：1 is photosensitive resin；2 be Sun-shading type syringe；3 be handheld ultraviolet light source；4 be complicated knot
Structure surface；5 be teflon syringe matrix；6 be carbon black coating；7 be heat shrinkage film；8 be the structure containing complicated inner cavity；9 are
Structure containing face crack；10 be once to replicate photosensitive resin；11 be secondary duplication photosensitive resin.
Embodiment
The present invention is further described with embodiment below in conjunction with the accompanying drawings.
The composition system of the present invention is as shown in figure 1, including photosensitive resin 1, Sun-shading type syringe 2 and handheld ultraviolet light source
3, the wherein photosensitive resin 1 of the internal storage liquid of Sun-shading type syringe 2.
The Sun-shading type syringe that the present invention is used first with polytetrafluoroethylmaterial material as shown in Fig. 2 make polytetrafluoroethyl-ne
Alkene infuser base 5；Then in the surface spraying carbon black coating 6 of teflon syringe matrix 5, for blocking ultraviolet light；Most
Afterwards, encapsulated on the outside of syringe with heat shrinkage film 7, protection carbon black coating 6, it is to avoid come off.
The present invention implementation process as shown in Figure 1, Figure 3, for the labyrinth surface 4 containing face crack, containing complexity
The structure 8 of inner chamber, using Sun-shading type syringe 2, face crack position is sprayed at by the photosensitive resin 1 of liquid；In the same of spraying
When, photosensitive resin 1 is irradiated using ultraviolet source 3, the photosensitive resin 1 of liquid is gradually cured as solid, while by complexity
Body structure surface 4, face crack length, the pattern of structure 8 containing complicated inner cavity etc. are replicated.Afterwards, will be photosensitive after solidification
Resin 1 is peeled off from body structure surface and is placed under light microscope or ESEM, accurately measures crack length, observation flaw shape
Looks, so that evaluation structure safe condition.
The present invention can realize the reproduction of crack morphology by secondary duplication, as shown in figure 4, for containing the attached of face crack
Plus the structure 9 containing face crack, replicated by first time and obtain photosensitive resin 10, the structure 9 containing face crack can be embodied
Crack morphology, including crack size etc.；, can be to the once duplication after solidification for the time of day of recurring structures face crack
Photosensitive resin 10 carries out second and replicated, and obtains secondary duplication photosensitive resin 11, secondary duplication photosensitive resin 11 and body structure surface 9
Microstructure it is completely the same.
What the present invention was not disclosed in detail partly belongs to techniques known.
Although illustrative embodiment of the invention is described above, in order to the technology of the art
Personnel understand the present invention, it should be apparent that the invention is not restricted to the scope of embodiment, to the common skill of the art
For art personnel, as long as various change is in the spirit and scope of the present invention that appended claim is limited and is determined, these
Change is it will be apparent that all utilize the innovation and creation of present inventive concept in the row of protection.
Claims (3)
1. a kind of labyrinth surface crack testing method based on photosensitive resin, it is characterised in that：Using photosensitive resin, shading
Type syringe and handheld ultraviolet light source, are detected to the face crack of labyrinth；Light is housed inside Sun-shading type syringe
Quick resin, sprays to the surface visible fine crack of naked eyes or doubtful crack position, together using Sun-shading type syringe by photosensitive resin
Shi Caiyong handheld ultraviolet lights source is irradiated to photosensitive resin, and photosensitive tree solidifies, while replicating the micro- of face crack
See pattern；Afterwards, the photosensitive resin after solidification is peeled off from body structure surface, be placed under light microscope or ESEM, can essence
Really observe face crack state, measurement surface crack length, width, depth dimensions；
It is liquid under the photosensitive resin stored condition, but under the ultraviolet light of 0.25~0.3 micron wave length, polymerize
React and be cured as solid-state rapidly；The handheld ultraviolet light source uses the ultraviolet light of 0.25~0.3 micron wave length；
The Sun-shading type infuser base material uses polytetrafluoroethylene (PTFE), and matrix material outer wall sprays ultraviolet light screener first,
The ultraviolet light screener is carbon black or zinc oxide, is then wrapped up using heat shrinkage film, can shield wavelength at 0.01~0.4 micron
Ultraviolet light.
2. a kind of labyrinth surface crack testing method based on photosensitive resin according to claim 1, its feature exists
In：The liquid viscosity of the photosensitive resin is less than 300cps, reduces viscous between liquid photosensitive resin and syringe inwall as far as possible
Lian Li；Photosensitive resin occurs cured strength and is more than 30MPa, it is ensured that do not deformed when being removed after photosensitive resin solidification；It is photosensitive
Copying surface resolution ratio is up to 0.5 micron after resin solidification, can accurately replicate crack length, width and elevation information；It is photosensitive
Resin curing time is less than 10 minutes, it is to avoid the long-time of object to be detected is shut down.
3. it is a kind of to labyrinth surface-rendering method, it is characterised in that：After described photosensitive resin 1 solidifies, it can also utilize
Method in claim 1 or 2, carries out secondary duplication, so as to realize labyrinth surface for the photosensitive resin surface of solidification
Reduction reproduce.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710578566.6A CN107219109A (en) | 2017-07-17 | 2017-07-17 | A kind of labyrinth surface crack testing method based on photosensitive resin |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710578566.6A CN107219109A (en) | 2017-07-17 | 2017-07-17 | A kind of labyrinth surface crack testing method based on photosensitive resin |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN107219109A true CN107219109A (en) | 2017-09-29 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710578566.6A Pending CN107219109A (en) | 2017-07-17 | 2017-07-17 | A kind of labyrinth surface crack testing method based on photosensitive resin |
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| CN (1) | CN107219109A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108267379A (en) * | 2018-01-16 | 2018-07-10 | 三峡大学 | A kind of method and apparatus that surface abrasion is surveyed based on completion method |
| CN110549692A (en) * | 2019-08-02 | 2019-12-10 | 中航复合材料有限责任公司 | ultraviolet fluorescent tracing layer for displaying low-speed impact damage of composite material |
| CN113334754A (en) * | 2021-07-01 | 2021-09-03 | 唐汉聪 | Surface film coating process for ink printing paper |
| CN114018662A (en) * | 2021-10-18 | 2022-02-08 | 大连理工大学 | Nondestructive testing method for deep hole inner surface morphology and roughness |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20030221952A1 (en) * | 2002-05-29 | 2003-12-04 | Gregory Mordukhovich | Replicating method for surface finish inspection |
| CN202351160U (en) * | 2011-11-14 | 2012-07-25 | 天津钢管集团股份有限公司 | Inner surface defect expansion inspection tool for steel pipe |
| CN104422693A (en) * | 2013-08-23 | 2015-03-18 | 上海金艺检测技术有限公司 | Qualitative detection method for cold roller surface micro linear defect |
| CN104685970A (en) * | 2012-09-28 | 2015-06-03 | 吉坤日矿日石能源株式会社 | Device for inspecting substrate having irregular rough surface and inspection method using same |
-
2017
- 2017-07-17 CN CN201710578566.6A patent/CN107219109A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20030221952A1 (en) * | 2002-05-29 | 2003-12-04 | Gregory Mordukhovich | Replicating method for surface finish inspection |
| CN202351160U (en) * | 2011-11-14 | 2012-07-25 | 天津钢管集团股份有限公司 | Inner surface defect expansion inspection tool for steel pipe |
| CN104685970A (en) * | 2012-09-28 | 2015-06-03 | 吉坤日矿日石能源株式会社 | Device for inspecting substrate having irregular rough surface and inspection method using same |
| CN104422693A (en) * | 2013-08-23 | 2015-03-18 | 上海金艺检测技术有限公司 | Qualitative detection method for cold roller surface micro linear defect |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108267379A (en) * | 2018-01-16 | 2018-07-10 | 三峡大学 | A kind of method and apparatus that surface abrasion is surveyed based on completion method |
| CN110549692A (en) * | 2019-08-02 | 2019-12-10 | 中航复合材料有限责任公司 | ultraviolet fluorescent tracing layer for displaying low-speed impact damage of composite material |
| CN113334754A (en) * | 2021-07-01 | 2021-09-03 | 唐汉聪 | Surface film coating process for ink printing paper |
| CN114018662A (en) * | 2021-10-18 | 2022-02-08 | 大连理工大学 | Nondestructive testing method for deep hole inner surface morphology and roughness |
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Application publication date: 20170929 |
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