CN110031306A - Detect method and apparatus, system and the storage medium of coating material strain crack - Google Patents
Detect method and apparatus, system and the storage medium of coating material strain crack Download PDFInfo
- Publication number
- CN110031306A CN110031306A CN201910368712.1A CN201910368712A CN110031306A CN 110031306 A CN110031306 A CN 110031306A CN 201910368712 A CN201910368712 A CN 201910368712A CN 110031306 A CN110031306 A CN 110031306A
- Authority
- CN
- China
- Prior art keywords
- strain
- coating material
- crack
- variation
- point
- 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.)
- Granted
Links
- 239000000463 material Substances 0.000 title claims abstract description 224
- 239000011248 coating agent Substances 0.000 title claims abstract description 221
- 238000000576 coating method Methods 0.000 title claims abstract description 221
- 238000000034 method Methods 0.000 title claims abstract description 44
- 238000003860 storage Methods 0.000 title claims description 7
- 238000001514 detection method Methods 0.000 claims abstract description 42
- 238000004458 analytical method Methods 0.000 claims abstract description 19
- 208000037656 Respiratory Sounds Diseases 0.000 claims description 29
- 230000008859 change Effects 0.000 claims description 8
- 238000004590 computer program Methods 0.000 claims description 5
- 238000012545 processing Methods 0.000 claims description 5
- 208000035126 Facies Diseases 0.000 claims description 3
- 238000005336 cracking Methods 0.000 description 6
- 238000010586 diagram Methods 0.000 description 5
- 230000000977 initiatory effect Effects 0.000 description 5
- 230000008569 process Effects 0.000 description 5
- 239000011159 matrix material Substances 0.000 description 4
- 230000023753 dehiscence Effects 0.000 description 3
- 230000008901 benefit Effects 0.000 description 2
- 238000007906 compression Methods 0.000 description 2
- 238000005259 measurement Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000000737 periodic effect Effects 0.000 description 2
- 238000000926 separation method Methods 0.000 description 2
- 238000012360 testing method Methods 0.000 description 2
- 238000004364 calculation method Methods 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 239000012141 concentrate Substances 0.000 description 1
- 238000013211 curve analysis Methods 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000011065 in-situ storage Methods 0.000 description 1
- 238000007689 inspection Methods 0.000 description 1
- 230000007246 mechanism Effects 0.000 description 1
- 238000010422 painting Methods 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 238000009864 tensile test Methods 0.000 description 1
- 239000012720 thermal barrier coating Substances 0.000 description 1
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N3/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N3/02—Details
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N3/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N3/08—Investigating strength properties of solid materials by application of mechanical stress by applying steady tensile or compressive forces
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N2203/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N2203/0014—Type of force applied
- G01N2203/0016—Tensile or compressive
- G01N2203/0017—Tensile
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N2203/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N2203/0058—Kind of property studied
- G01N2203/006—Crack, flaws, fracture or rupture
- G01N2203/0062—Crack or flaws
- G01N2203/0064—Initiation of crack
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N2203/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N2203/0058—Kind of property studied
- G01N2203/006—Crack, flaws, fracture or rupture
- G01N2203/0062—Crack or flaws
- G01N2203/0066—Propagation of crack
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N2203/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N2203/02—Details not specific for a particular testing method
- G01N2203/026—Specifications of the specimen
- G01N2203/0262—Shape of the specimen
- G01N2203/0278—Thin specimens
- G01N2203/0282—Two dimensional, e.g. tapes, webs, sheets, strips, disks or membranes
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N2203/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N2203/02—Details not specific for a particular testing method
- G01N2203/06—Indicating or recording means; Sensing means
- G01N2203/0641—Indicating or recording means; Sensing means using optical, X-ray, ultraviolet, infrared or similar detectors
- G01N2203/0647—Image analysis
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N2203/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N2203/02—Details not specific for a particular testing method
- G01N2203/06—Indicating or recording means; Sensing means
- G01N2203/067—Parameter measured for estimating the property
- G01N2203/0676—Force, weight, load, energy, speed or acceleration
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N2203/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N2203/02—Details not specific for a particular testing method
- G01N2203/06—Indicating or recording means; Sensing means
- G01N2203/067—Parameter measured for estimating the property
- G01N2203/0682—Spatial dimension, e.g. length, area, angle
Landscapes
- 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)
- Investigating Strength Of Materials By Application Of Mechanical Stress (AREA)
Abstract
The invention discloses a kind of method and apparatus, system and media for detecting coating material strain crack, wherein the method for detection coating material strain crack includes: the strain detecting data obtained when coating material is stretched or compressed；Strain variation curve is generated according to the strain detecting data；According to the strain variation of coating material described in the strain variation tracing analysis；The state of the strain crack of the coating material is judged according to the strain variation.Method and apparatus, the system of detection coating material strain crack of the invention, it can be determined that the state of strain crack provides data support to analyze the micromechanism of damage of coating material.
Description
Technical field
The present invention relates to space flight and aviation technical field, more particularly, to a kind of method for detecting coating material strain crack,
And the device and computer readable storage medium and detection coating material strain crack of detection coating material strain crack are
System.
Background technique
Mechanics properties testing and micromechanism of damage for coating material are probed into, mostly using universal tensile testing machine macro
The method that coating material is stretched or compressed, and generallys use high resolution camera shooting under scale is seen, coating is observed
Dehiscence process is stretched or compressed, and combines the strain variation situation of Digital Image Correlation Method measurement coating surface.
Wherein, the detection of the strain crack of coating material is the one side that mechanics properties testing and micromechanism of damage are probed into, but
It is to be remained to be further improved in the related technology there are no the method for the strain crack of simple and effective detection coating material.
Summary of the invention
The present invention is directed at least solve one of the technical problems existing in the prior art.
For this purpose, the first purpose of this invention is to propose a kind of method for detecting coating material strain crack, this method
It can detecte the variation of coating strain crack, it is simple and effective, data support is provided to analyze the micromechanism of damage of coating material.
Second object of the present invention is to propose a kind of computer readable storage medium.
Third object of the present invention is to propose a kind of device for detecting coating material strain crack.
Fourth object of the present invention is to propose a kind of system for detecting coating material strain crack.
To solve the above-mentioned problems, the method for the detection coating material strain crack of first aspect present invention embodiment, packet
It includes: obtaining strain detecting data when coating material is stretched or compressed；It is bent that strain variation is generated according to the strain detecting data
Line；According to the strain variation of coating material described in the strain variation tracing analysis；The painting is judged according to the strain variation
The state of the strain crack of layer material.
The method of detection coating material strain crack according to an embodiment of the present invention, proposes a kind of inspection of new strain crack
Survey method judges the strain of coating material according to strain variation according to the strain variation of strain variation tracing analysis coating material
The state of crackle, it is simple and effective, data support is provided to analyze the micromechanism of damage of coating material.
In some embodiments, determine that the germinating of the strain crack of the coating material is initial according to the strain variation
Point；Determine that the strain crack safety zone of the coating material and strain crack generate area according to the germinating initial point.
In some embodiments, determine that the germinating of the strain crack of the coating material is initial according to the strain variation
Point, comprising: after the strain variation of the coating material reaches the first strain threshold, strain continues to increase and in cyclical upturn and downturn
Variation, when the strain fall is less than the second strain threshold, it is initial that the strain of the coating material reaches the germinating
Point.
In some embodiments, the strain crack safety zone of the coating material is determined according to the germinating initial point and answered
Become crackle and generate area, comprising: when the strain variation of the coating material is before the germinating initial point, at the coating material
In the strain crack safety zone；When the strain variation of the coating material is after the germinating initial point, the coating material
Material generates area in the strain crack.
In some embodiments, the method also includes: the strain crack generate area, sentenced according to the strain variation
Whether the coating material that breaks generates knick point and crackle.
In some embodiments, area is generated in the strain crack, the coating material is judged according to the strain variation
Whether knick point and crackle are generated, comprising:
Area is generated in the strain crack, strain ramps and strain variation rate is greater than change rate threshold value, works as strain facies
Greater than third strain threshold and the strain bust and amplitude is reduced greater than the 4th for the strain variation of the germinating initial point
When strain threshold, the strain of the coating material reaches crackle and generates point；
When the strain variation of the coating material generates between point in the germinating initial point and the crackle, the coating
Material generates knick point；
When the strain variation of the coating material is after the crackle generates point, the coating material generate described in split
Line.
The computer readable storage medium of second aspect of the present invention embodiment is stored thereon with computer program, the meter
The method that coating material strain crack is detected described in above example is realized when calculation machine program is executed by processor.
To solve the above-mentioned problems, the device of the detection coating material strain crack of third aspect present invention embodiment, packet
It includes: obtaining module, be configured to obtain strain detecting data when coating material is stretched or compressed；Generation module is configured to basis
The strain detecting data generate strain variation curve；Analysis module is configured to according to the strain variation tracing analysis
The strain variation of coating material；Judgment module is configured to judge the strain crack of the coating material according to the strain variation
State.
The device of detection coating material strain crack according to an embodiment of the present invention, by analysis module according to strain variation
The strain variation of tracing analysis coating material, and then judgment module can judge the strain crack of coating material according to strain variation
State, it is simple and effective, for analyze coating material micromechanism of damage provide data support.
To solve the above-mentioned problems, the system of the detection coating material strain crack of fourth aspect present invention embodiment, packet
It includes: stretching-machine, for stretching or compressing coating material；Scanning electron microscope, the coating material and the stretching-machine are placed
In the sample bin of the scanning electron microscope, the scanning electron microscope is for acquiring the coating material stretching or compression
When scan image；Processing unit, for obtaining the strain when coating material is stretched or compressed according to the scan image
Detection data；The device of coating material strain crack is detected described in above example.
The system of detection coating material strain crack according to an embodiment of the present invention, by using the detection of above example
The device of coating material strain crack can simply and effectively judge the strain crack state of coating material, to analyze coating material
The micromechanism of damage of material provides data and supports.
Additional aspect and advantage of the invention will be set forth in part in the description, and will partially become from the following description
Obviously, or practice through the invention is recognized.
Detailed description of the invention
Above-mentioned and/or additional aspect of the invention and advantage will become from the description of the embodiment in conjunction with the following figures
Obviously and it is readily appreciated that, in which:
Fig. 1 is the flow chart of the method for detection coating material strain crack according to an embodiment of the invention；
Fig. 2 is the schematic diagram of strain variation curve according to an embodiment of the invention；
Fig. 3 is the block diagram of the device of detection coating material strain crack according to an embodiment of the invention；
Fig. 4 is the block diagram of the system of detection coating material strain crack according to an embodiment of the invention.
Appended drawing reference:
Detect the system 1000 of coating material strain crack；
Detect device 100, stretching-machine 200, scanning electron microscope 300 and the processing unit of coating material strain crack
400；
Obtain module 10, generation module 20, analysis module 30 and judgment module 40.
Specific embodiment
The embodiment of the present invention is described below in detail, the embodiment being described with reference to the drawings is exemplary, and is retouched in detail below
State the embodiment of the present invention.
The methods, devices and systems of the detection coating material strain crack of the embodiment of the present invention, can be applied to space flight boat
Empty technical field, for example, the embodiment of the present application can be used for the thermal barrier coating on engine blade in space flight and aviation equipment
Methods, devices and systems its strain crack is detected, and then analyzed and inferred for the micromechanism of damage of coating material
It provides data to support, improves the performance of the engine of space flight and aviation equipment.
The detection coating material strain crack of embodiment according to a first aspect of the present invention is described below with reference to Fig. 1 and Fig. 2
Method.
Fig. 1 is the flow chart of the method for detection coating material strain crack according to an embodiment of the invention, such as Fig. 1
Shown, the method for the detection coating material strain crack of the embodiment of the present invention includes step S1, step S2, step S3 and step
S4。
Step S1 obtains strain detecting data when coating material is stretched or compressed.
Specifically, coating material is stretched or is compressed by stretching-machine, and obtain coating material stretching or compressed
Image in journey, such as by the dehiscence process of high-resolution camera image pickup method observation coating material, alternatively, passing through electron scanning
The dehiscence process of micro- sem observation coating material, and combine the strain variation feelings of Digital Image Correlation Method measurement coating material
Condition, to obtain strain detecting data when coating material is stretched or compressed.
In embodiment, stretching-machine and coating material can be placed in the sample bin of scanning electron microscope, is passed through
Scanning electron microscope is scanned in micro-nano rank, in situ, to obtain the scanning figure in coating material stretching or compression process
Picture is handled scan image by Digital Image Correlation Method, and scan image measures coating material according to treated
Strain variation, obtain strain detecting data.
Step S2 generates strain variation curve according to strain detecting data.
Specifically, the strain detecting data of coating material surface each point are obtained, and then can be by VIC2D software by coating
The strain detecting data of material surface each point generate the strain variation curve of each point.
Step S3, according to the strain variation of strain variation tracing analysis coating material.
Specifically, coating material during stretching, falls off from initial tensile to from matrix, and strain can be divided into several
Changes phase corresponds to the inflection point on strain variation curve in the separation of different changes phases, and different changes phases its
The changing rule of strain is different, again may be by strain variation curve and shows, therefore, referring to strain variation curve
It can analyze the strain variation of coating material different phase.
Step S4 judges the state of the strain crack of coating material according to strain variation.
Specifically, as stretching or compressive load are continuously applied on coating material, coating material will be produced from flawless
It gives birth to, to generating knick point, crack initiation and cracking, up to falling off to from matrix, in the process, each stage coating
The strain variation of material is also different, thus, it may determine that the strain of coating material is split according to the strain variation of coating material
The state of line, for example, judging that coating material is cracked again without cracking, alternatively, judging coating material crack initiation
Still it has cracked, can have been judged according to the strain variation of coating material.
The method of detection coating material strain crack according to an embodiment of the present invention, passes through strain variation tracing analysis coating
The strain variation of material judges the state of the strain crack of coating material according to strain variation, proposes a kind of new strain crack
Detection method, it is simple and effective, for analyze coating material micromechanism of damage provide data support.
In some embodiments, the germinating initial point of the strain crack of coating material is determined according to strain variation, germinating is just
Initial point can be understood as strain variation after this point, and coating material will crack initiation；In turn, it is determined according to germinating initial point
The strain crack safety zone of coating material and strain crack generate area, wherein strain crack safety zone can be coating material
Non- fracture area, i.e., without generating knick point, crackle in coating material；Conversely, strain crack generates area, that is, coating material cracking
Germinate and crack in region, i.e. coating material.
Further, after the strain variation of coating material reaches the first strain threshold, strain continues to increase and in the period
Property eustasy, when strain fall less than the second strain threshold when, the strain of coating material reaches germinating initial point.In reality
It applies in example, before the strain variation of coating material germinates initial point herein, coating material is in strain crack safety zone, that is, applies
It is generated in layer material without crackle；After the strain variation of coating material germinates initial point herein, then coating material is in and answers
Become crackle and generate area, i.e., germinates in coating material, cracks.
Area is generated in strain crack, judges whether coating material generates knick point and crackle according to strain variation.Specifically, exist
Strain crack generate area, the strain of coating material ramp and strain variation rate be greater than change rate threshold value, when strain facies for
When the strain variation for germinating initial point is greater than third strain threshold and strains bust and reduce amplitude greater than four strain thresholds, apply
The strain of layer material reaches crackle and generates point；Wherein, when the strain variation of coating material generates point in germinating initial point and crackle
Between, coating material generates knick point；When the strain variation of coating material is after crackle generates point, coating material is cracked.
Specifically, coating material just started in load bearing a very long time, and should be slowed by coating material is flat
Quietly rise, until fluctuation-type rises, this section of region corresponds to the stage before germinating initial point, in this stage, coating
Flawless generates in material, and flawless knick point is the strain crack safety zone of coating material.When stretching or compressive load reach one
When determining the stage, the fraction areal strain of coating material is sharply increased, and is generated between point corresponding to germinating initial point and crackle
Stage generates knick point in this stage coating material, and this stage coating material shows as crackle and quickly germinates the phase, reaches crackle
After generating point, coating material surface is cracked.In short, stress variation is the strain of coating material before germinating initial point
Crackle safety zone, the stage that stress variation occurs after germinating initial point for crackle.
It is exemplified below, Fig. 2 is showing for the strain variation curve of coating material according to an embodiment of the invention
It is intended to.As shown in Fig. 2, the strain variation of coating material is smaller, is no more than 0.005 from starting to stretch O point to the first inflection point A.When
When strain reaches 0.005 i.e. the first inflection point A, the strain of coating material enters second stage；In second stage, strain is in periodically
Fluctuations, each period include raising and reducing two processes.As stretching time increases, the changing value of periodic relief is gradually
It reduces, when the value of some periodic relief reduction is less than 0.001, Second Inflexion Point B is reached, into the phase III, wherein second turns
Point B corresponds to the germinating initial point of coating material；In the phase III, the strain of all positions of coating material is accelerated, with the time
Increase, strain concentrate at the certain point on coating material surface, when this is more than per second 7.5 relative to the strain variation of B point
×10-5, these positions are the crack location of coating.It is reduced rapidly until applying ply strain, reduces amplitude and be not less than 0.003, i.e.,
Stress release, reaching cracking point is third inflection point C, and the crackle that third inflection point C corresponds to coating material generates point, in third inflection point C
Crackle occurs later.
In short, stress variation generates in coating material without crackle before corresponding Second Inflexion Point B, stress variation exists
After corresponding Second Inflexion Point B, germinates in coating material and crack, wherein strain variation is in Second Inflexion Point B and third inflection point
Between C, coating material generates knick point, quickly germinates the phase in crackle, strain variation is after third inflection point C, in coating material
It cracks.
In short, the method for the detection coating material strain crack of the embodiment of the present invention, passes through strain variation curve point
Strain variation is analysed, the state of the strain crack of coating material is judged based on strain variation, it is simple and effective, to analyze coating material
Micromechanism of damage provide data support.
The method of detection coating material strain crack based on above example, what second aspect of the present invention embodiment proposed
Computer readable storage medium is stored thereon with computer program, is realized when computer program is executed by processor as real above
The method for applying the detection coating material strain crack of example.
The device of the detection coating material strain crack of embodiment according to a third aspect of the present invention is described with reference to the accompanying drawings.
Fig. 3 is the block diagram of the device of detection coating material strain crack according to an embodiment of the invention, such as Fig. 3 institute
Show, the device 100 of the detection coating material strain crack of the embodiment of the present invention includes obtaining module 10, generation module 20, analysis
Module 30 and judgment module 40.
Wherein, module 10 is obtained to be configured to obtain strain detecting data when coating material is stretched or compressed.Generation module
20 are configured to generate strain variation curve according to strain detecting data；Analysis module 30 is configured to according to strain variation tracing analysis
The strain variation of coating material；Judgment module 40 is configured to judge the state of the strain crack of coating material according to strain variation.
Specifically, coating material during stretching, falls off from initial tensile to from matrix, and strain can be divided into several
Changes phase corresponds to the inflection point on strain variation curve in the separation of different changes phases, and different changes phases its
The changing rule of strain is different, again may be by strain variation curve and shows, therefore, referring to strain variation curve
It can analyze the strain variation of coating material different phase.As stretching or compressive load are continuously applied on coating material, apply
Layer material will be generated from flawless, to generating knick point, crack initiation and cracking, up to falling off to from matrix,
During this, the strain variation of coating material is also different, thus, coating may determine that according to the strain variation of coating material
The state of the strain crack of material, for example, judge that coating material is cracked again without cracking, be crack initiation or
It has been cracked that, can have been judged according to the strain variation of coating material.
The device 100 of detection coating material strain crack according to an embodiment of the present invention, by analysis module 30 according to answering
Become the strain variation of change curve analysis coating material, and then judgment module 40 can judge coating material according to strain variation
The state of strain crack, it is simple and effective, data support is provided to analyze the micromechanism of damage of coating material.
The system of the detection coating material strain crack of embodiment according to a fourth aspect of the present invention is described with reference to the accompanying drawings.
Fig. 4 is the block diagram of the system of detection coating material strain crack according to an embodiment of the invention, as shown in figure 4, this hair
The system 1000 of the detection coating material strain crack of bright embodiment includes that the detection coating material strain of above example such as is split
Device 100, stretching-machine 200, scanning electron microscope 300 and the processing unit 400 of line.
Wherein, stretching-machine 200 is for stretching or compressing coating material；Coating material and stretching-machine 200 are placed on scanning electricity
The sample bin of sub- microscope 300, scanning electron microscope 300 are used to acquire scan image when coating material is stretched or compressed；
Processing unit 400 is used to obtain strain detecting data when coating material is stretched or compressed according to scan image；Detect coating material
Expect that the device 100 of strain crack is used to generate strain variation curve according to strain detecting data, and according to strain variation curve point
Strain variation is analysed, and then judge according to strain variation the state of the strain crack of coating material, for the damage of analysis coating material
Mechanism provides data and supports.
The system 1000 of detection coating material strain crack according to an embodiment of the present invention, by using above example
The device 100 for detecting coating material strain crack, can simply and effectively judge the strain crack state of coating material, for analysis
The micromechanism of damage of coating material provides data and supports.
In the description of this specification, reference term " one embodiment ", " some embodiments ", " illustrative examples ",
The description of " example ", " specific example " or " some examples " etc. means specific features described in conjunction with this embodiment or example, knot
Structure, material or feature are included at least one embodiment or example of the invention.In the present specification, to above-mentioned term
Schematic representation may not refer to the same embodiment or example.
Although an embodiment of the present invention has been shown and described, it will be understood by those skilled in the art that: not
A variety of change, modification, replacement and modification can be carried out to these embodiments in the case where being detached from the principle of the present invention and objective, this
The range of invention is defined by the claims and their equivalents.
Claims (9)
1. a kind of method for detecting coating material strain crack, which is characterized in that the described method includes:
Obtain strain detecting data when coating material is stretched or compressed；
Strain variation curve is generated according to the strain detecting data；
According to the strain variation of coating material described in the strain variation tracing analysis；
The state of the strain crack of the coating material is judged according to the strain variation.
2. the method for detection coating material strain crack according to claim 1, which is characterized in that become according to the strain
Change the state for judging the strain crack of the coating material, comprising:
The germinating initial point of the strain crack of the coating material is determined according to the strain variation；
Determine that the strain crack safety zone of the coating material and strain crack generate area according to the germinating initial point.
3. the method for detection coating material strain crack according to claim 2, which is characterized in that become according to the strain
Change the germinating initial point for determining the strain crack of the coating material, comprising:
After the strain variation of the coating material reaches the first strain threshold, strain continues to increase and become in cyclical upturn and downturn
Change, when the strain fall is less than the second strain threshold, the strain of the coating material reaches the germinating initial point.
4. the method for detection coating material strain crack according to claim 3, which is characterized in that according at the beginning of the germinating
Initial point determines that the strain crack safety zone of the coating material and strain crack generate area, comprising:
When the strain variation of the coating material is before the germinating initial point, the coating material is in the strain crack
Safety zone；
When the strain variation of the coating material is after the germinating initial point, the coating material is in the strain crack
Generate area.
5. the method for detection coating material strain crack according to claim 4, which is characterized in that the method is also wrapped
It includes:
Area is generated in the strain crack, judges whether the coating material generates knick point and crackle according to the strain variation.
6. the method for detection coating material strain crack according to claim 5, which is characterized in that in the strain crack
Area is generated, judges whether the coating material generates knick point and crackle according to the strain variation, comprising:
The strain crack generate area, strain ramp and strain variation rate be greater than change rate threshold value, when strain facies for
The strain variation of the germinating initial point is greater than third strain threshold and the strain bust and reduces amplitude greater than the 4th strain
When threshold value, the strain of the coating material reaches crackle and generates point；
When the strain variation of the coating material generates between point in the germinating initial point and the crackle, the coating material
Generate knick point；
When the strain variation of the coating material is after the crackle generates point, the coating material generates the crackle.
7. a kind of computer readable storage medium, which is characterized in that be stored thereon with computer program, the computer program quilt
Processor realizes detection coating material strain crack as described in any one in claim 1-5 method when executing.
8. a kind of device for detecting coating material strain crack, which is characterized in that described device includes:
Module is obtained, is configured to obtain strain detecting data when coating material is stretched or compressed；
Generation module is configured to generate strain variation curve according to the strain detecting data；
Analysis module is configured to the strain variation of the coating material according to the strain variation tracing analysis；
Judgment module is configured to judge the state of the strain crack of the coating material according to the strain variation.
9. a kind of system for detecting coating material strain crack, which is characterized in that the system comprises:
Stretching-machine, for stretching or compressing coating material；
Scanning electron microscope, the coating material and the stretching-machine are placed on the sample bin of the scanning electron microscope,
The scanning electron microscope is used to acquire the scan image when coating material is stretched or compressed；
Processing unit, for obtaining the strain detecting data when coating material is stretched or compressed according to the scan image；
The device of detection coating material strain crack as claimed in claim 8.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910368712.1A CN110031306B (en) | 2019-05-05 | 2019-05-05 | Method, device and system for detecting strain cracks of coating material and storage medium |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910368712.1A CN110031306B (en) | 2019-05-05 | 2019-05-05 | Method, device and system for detecting strain cracks of coating material and storage medium |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN110031306A true CN110031306A (en) | 2019-07-19 |
| CN110031306B CN110031306B (en) | 2020-01-24 |
Family
ID=67241320
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910368712.1A Active CN110031306B (en) | 2019-05-05 | 2019-05-05 | Method, device and system for detecting strain cracks of coating material and storage medium |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN110031306B (en) |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1731135A (en) * | 2005-08-15 | 2006-02-08 | 清华大学 | Film stretching loading device under scanning microscopy environment and film distortion measurement method |
| CN101592573A (en) * | 2009-06-08 | 2009-12-02 | 清华大学 | Tension and compression and tired loading experiment machine based on laser confocal microscope |
| CN103471905A (en) * | 2013-09-16 | 2013-12-25 | 清华大学 | Uniaxial two-way micro mechanical measurement device and method for scanning micro environment |
| CN104677738A (en) * | 2015-02-09 | 2015-06-03 | 清华大学 | Bubbling method for measuring mechanical property of film |
| CN109682681A (en) * | 2018-12-06 | 2019-04-26 | 内蒙合成化工研究所 | A kind of test method of coating micro-crack dynamic expansion and selfreparing effect |
-
2019
- 2019-05-05 CN CN201910368712.1A patent/CN110031306B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1731135A (en) * | 2005-08-15 | 2006-02-08 | 清华大学 | Film stretching loading device under scanning microscopy environment and film distortion measurement method |
| CN101592573A (en) * | 2009-06-08 | 2009-12-02 | 清华大学 | Tension and compression and tired loading experiment machine based on laser confocal microscope |
| CN103471905A (en) * | 2013-09-16 | 2013-12-25 | 清华大学 | Uniaxial two-way micro mechanical measurement device and method for scanning micro environment |
| CN104677738A (en) * | 2015-02-09 | 2015-06-03 | 清华大学 | Bubbling method for measuring mechanical property of film |
| CN109682681A (en) * | 2018-12-06 | 2019-04-26 | 内蒙合成化工研究所 | A kind of test method of coating micro-crack dynamic expansion and selfreparing effect |
Non-Patent Citations (1)
| Title |
|---|
| GREGORY M.SMITH: "in-situ observation of strain and cracking in coated laminates by digital image correlation", 《ELSEVIER》 * |
Also Published As
| Publication number | Publication date |
|---|---|
| CN110031306B (en) | 2020-01-24 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN1869677A (en) | Eddy current inspection method and system | |
| JP6958494B2 (en) | Displacement amount measuring device, displacement amount measuring method and displacement amount measuring program | |
| US8960012B2 (en) | Method and apparatus for detection and characterization of mechanical damage | |
| JP2008064755A (en) | Method for distinguishing damage of component, and component-inspection system | |
| US8258477B2 (en) | Inspection apparatus and inspection method | |
| US20170122856A1 (en) | Hardness testing apparatus and hardness testing method | |
| JP2019530882A5 (en) | ||
| CN114332089B (en) | Plastic sheath production quality control method, device and system based on image processing | |
| CN112037214B (en) | Defect detection evaluation method and device, electronic equipment and storage medium | |
| JP2012159502A (en) | Non-destructive test method for automatic fastener inspection | |
| CN103592114A (en) | Method for detecting mechanical property of self-piercing riveting joint | |
| JP2007155724A5 (en) | ||
| KR101039593B1 (en) | Method and Apparatus for Enhancing Reliability of Thermosonic NDT Method | |
| CN110031306A (en) | Detect method and apparatus, system and the storage medium of coating material strain crack | |
| CN110082207A (en) | Detect method and apparatus, system and the storage medium of coating material strain failure | |
| CN112162011A (en) | Composite insulator defect detection method, device and storage medium | |
| KR101631747B1 (en) | Measuring apparatus and method of elastic modulus for diagnosing material damages | |
| Burkov et al. | Investigation of sensitivity of aluminum foil based strain sensors at fatigue damage evaluation of CFRP | |
| Rao et al. | Damage characterization in SFRP using X-ray computed tomography after application of incremental and interrupted in situ quasi static tensile loading | |
| RU2727316C1 (en) | Method for acoustic emission control of structures | |
| JP7442009B1 (en) | Surface roughness evaluation method and device, surface roughness evaluation program, and storage medium storing the surface roughness evaluation program | |
| RU2263296C1 (en) | Method of determining presence of defects after nondestructive tests | |
| WO2024070064A1 (en) | Residual stress distribution calculation method, device and program | |
| Chepil et al. | The methodology of evaluation and monitoring of the fatigue fracture at macrocrack initiation stage | |
| Kato et al. | Fatigue Life Estimation Using Diffusion of Laser |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |