CN107449662A - A kind of biasing effect detection means and method and strain detecting system and method - Google Patents
A kind of biasing effect detection means and method and strain detecting system and method Download PDFInfo
- Publication number
- CN107449662A CN107449662A CN201610374627.2A CN201610374627A CN107449662A CN 107449662 A CN107449662 A CN 107449662A CN 201610374627 A CN201610374627 A CN 201610374627A CN 107449662 A CN107449662 A CN 107449662A
- Authority
- CN
- China
- Prior art keywords
- laser
- range finder
- measurement
- axis
- workpiece
- 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
- 238000001514 detection method Methods 0.000 title claims abstract description 59
- 230000000694 effects Effects 0.000 title claims abstract description 46
- 238000000034 method Methods 0.000 title claims abstract description 35
- 238000005259 measurement Methods 0.000 claims description 120
- 238000012545 processing Methods 0.000 claims description 19
- 238000003384 imaging method Methods 0.000 claims description 9
- 238000009434 installation Methods 0.000 claims description 3
- 230000008901 benefit Effects 0.000 abstract description 7
- 238000000105 evaporative light scattering detection Methods 0.000 abstract description 4
- 239000011888 foil Substances 0.000 description 19
- 238000012360 testing method Methods 0.000 description 13
- 230000008859 change Effects 0.000 description 12
- 238000010586 diagram Methods 0.000 description 9
- 230000033001 locomotion Effects 0.000 description 8
- 239000000853 adhesive Substances 0.000 description 5
- 230000001070 adhesive effect Effects 0.000 description 5
- 206010016256 fatigue Diseases 0.000 description 5
- 239000003292 glue Substances 0.000 description 3
- 230000008569 process Effects 0.000 description 3
- 238000006073 displacement reaction Methods 0.000 description 2
- 238000013139 quantization Methods 0.000 description 2
- 238000003466 welding Methods 0.000 description 2
- 241001416181 Axis axis Species 0.000 description 1
- 229910000831 Steel Inorganic materials 0.000 description 1
- 238000004364 calculation method Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000001066 destructive effect Effects 0.000 description 1
- 235000013399 edible fruits Nutrition 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000000737 periodic effect Effects 0.000 description 1
- 239000004065 semiconductor Substances 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 238000010998 test method Methods 0.000 description 1
- 230000000007 visual effect Effects 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
- G01N3/08—Investigating strength properties of solid materials by application of mechanical stress by applying steady tensile or compressive forces
-
- 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
-
- 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
- G01N3/24—Investigating strength properties of solid materials by application of mechanical stress by applying steady shearing 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
- G01N2203/0058—Kind of property studied
- G01N2203/0069—Fatigue, creep, strain-stress relations or elastic constants
- G01N2203/0075—Strain-stress relations or elastic constants
-
- 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
-
- 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)
- General 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)
- Immunology (AREA)
- Pathology (AREA)
- Length Measuring Devices By Optical Means (AREA)
Abstract
The invention discloses a kind of biasing effect detection means and method and strain detecting system and method, biasing effect detection means includes：Fixed part, movable part and laser range finder；There is the first mounting groove on the fixed part, there is the second mounting groove on the movable part；Under the non-force state of the biasing effect detection means, the center coaxial line of the second mounting groove on the center and the movable part of the first mounting groove on the fixed part；Under the force state of the biasing effect detection means, the movable part drives axis pre-determined distance described in the center deviation of the second mounting groove on the movable part along pre-determined distance is moved perpendicular to the direction of the axis；The direction of propagation of the laser of the laser range finder output is intersected with the axis, and the laser range finder is used to measure the distance between laser outgoing position and laser reflection position.Compared with traditional detection scheme, the technical program has the advantages that detection is accurate, it is high to be adapted to mass detection, detection efficiency.
Description
Technical field
The present invention relates to mechanical detection technical field, and in particular to a kind of biasing effect detection means and method and strain
Detecting system and method.
Background technology
Detected in machine components with examining and determine field, reviewer is frequently necessary to apply workpiece for measurement (such as small steel pipe) and cut
Xiang Li, and the strain that the ad-hoc location of detection workpiece for measurement occurs before and after force.By observing strain with the change cut to power
And the change occurred, to examine workpiece for measurement to cutting the tolerance to power.Traditional strain detecting mode is to use to be based on " answering
The detecting system of change piece " is detected.Foil gauge refers to the electricity that a kind of resistance can change and change with own form
Component, operating personnel are cut to before power in application, first paste strain manually using adhesive on workpiece for measurement correspondence position
Piece, and foil gauge and supporting data acquisition device are linked together, occur in workpiece for measurement because cutting to deformation caused by power
When, also pursuit test part produces corresponding deformation to foil gauge together, so that the resistance value of itself also changes, this resistance
The change of value can be detected and recorded by data acquisition device.Operating personnel are according to strain sheet resistance values with the change cut to power
Change, it is possible to know the strain that workpiece for measurement occurs under specific cut to power, cut so as to assess testpieces reply to power
Ability.
But this detection method based on foil gauge, there is following defect：First, operating personnel should using adhesive
Become piece to be pasted together with workpiece for measurement, but because the presence of adhesive, the method do not ensure that foil gauge and workpiece for measurement
The deformation of strict conformance will occur.When test accuracy requires higher, between foil gauge and workpiece for measurement that adhesive introduces
Deformation difference, the error that can not ignore will be introduced for result of the test.Second, because the installation method of foil gauge is pure manually adhered
Patch, so the finer operation technique of operating personnel and experience are required, simultaneously because operating personnel can not ensure with a collection of
The strain gauge adhesion position of secondary workpiece for measurement is all exactly the same, thus per secondary stress tolerance test result of the test, all can be by
In the manually-operated minute differences of operating personnel, and produce error.3rd, strained due to needing to paste for each workpiece for measurement
Piece, so in batch testing task, the workload of this method of testing is very big, in having the occasion that the test time limit requires, one
Aspect have to by using a large amount of operating personnel and meanwhile detection method could complete task on schedule so that detection into
This is high, on the other hand as there may be the operating personnel that experience is not enriched, and is the hand paste link in detection
Increase operating error.Finally, it is contemplated that some workpieces for measurement can not use common adhesive, it is necessary to logical due to the limitation of material
Cross the method for welding could link together with foil gauge, and need to destroy workpiece surface to be measured and very due to welding
Hardly possible is restored, therefore the method for testing based on foil gauge, it is more likely that is a kind of destructive detection method.
The content of the invention
In view of the above problems, it is proposed that the present invention so as to provide one kind overcome above mentioned problem or at least in part solve on
State the biasing effect detection means and method and strain detecting system and method for problem.
According to one aspect of the present invention, there is provided a kind of biasing effect detection means, the device include：Fixed part, work
Dynamic portion and laser range finder；
There is the first mounting groove on the fixed part, there is the second mounting groove on the movable part；
Under the non-force state of the biasing effect detection means, the center of the first mounting groove on the fixed part and
The center coaxial line of the second mounting groove on the movable part；It is described under the force state of the biasing effect detection means
Movable part drives the center of the second mounting groove on the movable part inclined along perpendicular to the direction of the axis pre-determined distance is moved
From the axis pre-determined distance；
The laser that laser in the laser range finder is sent is radiated on the axis, and the laser range finder is used for
Measurement laser sends the distance between position and laser reflection position.
Alternatively, the laser range finder also includes imaging sensor and image-signal processor；
Described image sensor is used for the reflected light for receiving the laser that the laser is sent, and exports corresponding image letter
Number；
Described image signal processor is used to handle the picture signal of described image sensor output, obtains laser
Send the distance between position and laser reflection position.
Alternatively, the direction of propagation for the laser that the laser is sent is vertical with the axis.
According to another aspect of the present invention, there is provided a kind of strain detecting system, the system include：As above any one institute
The biasing effect detection means stated, and, data processing equipment；
Under the force state of the biasing effect detection means, the movable part is further with default angular speed around described
Axis rotates, and drives the center of the second mounting groove on the movable part to be rotated with default angular speed around the axis；
The laser range finder sends the distance between position and laser reflection position value according to predeterminated frequency measurement laser；
The data processing equipment is used for the distance value that is measured according to the laser range finder in preset time, establish away from
From value and the corresponding relation of time, strain value is calculated according to the distance value and the corresponding relation of time.
Alternatively, the data processing equipment is used between the maximum range value and lowest distance value in preset time
The half of difference is as strain value.
According to another aspect of the invention, there is provided a kind of biasing effect detection method, this method include：Fixed part,
Movable part and laser range finder；
One end of workpiece for measurement is fixed in the first mounting groove on fixed part, the other end of workpiece for measurement is fixed on
In the second mounting groove on movable part；Wherein, on the center and the movable part of the first mounting groove on the fixed part
The center coaxial line of two mounting grooves；
The movable part is driven to move pre-determined distance along perpendicular to the direction of the axis so that the on the movable part
Axis pre-determined distance described in the center deviation of two mounting grooves；
Adjust laser range finder position so that the direction of propagation for the laser that the laser in laser range finder is sent with it is described
Axis co-planar and it is radiated in the specified location of workpiece for measurement；Position and laser reflection are sent using laser range finder measurement laser
The distance between position.
Alternatively, it is described to send the distance between position and laser reflection position bag using laser range finder measurement laser
Include：
The reflected light for the laser that the laser is sent is received using the imaging sensor in laser range finder, output is corresponding
Picture signal；
At the picture signal exported using the image-signal processor in laser range finder to described image sensor
Reason, obtain laser and send the distance between position and laser reflection position.
Alternatively, the direction of propagation for the laser that the laser is sent is vertical with the axis.
To include according to it is still another aspect of the present invention to provide a kind of strain detecting method, this method：
One end of workpiece for measurement is fixed in the first mounting groove on fixed part, the other end of workpiece for measurement is fixed on
In the second mounting groove on movable part；Wherein, on the center and the movable part of the first mounting groove on the fixed part
The center coaxial line of two mounting grooves；
The movable part is driven to move pre-determined distance along perpendicular to the direction of the axis so that the on the movable part
Axis pre-determined distance described in the center deviation of two mounting grooves；And the movable part is driven further with default angular speed around institute
State axis rotation so that the center of the second mounting groove on the movable part is rotated with default angular speed around the axis；
Adjust laser range finder position so that the direction of propagation for the laser that the laser in laser range finder is sent with it is described
Axis co-planar and it is radiated in the specified location of workpiece for measurement；Using laser range finder position is sent according to predeterminated frequency measurement laser
Put the distance between laser reflection position；
The distance value exported using data processing equipment according to the laser range finder in preset time, establishes distance value
With the corresponding relation of time, the strain value of workpiece for measurement is calculated according to the distance value and the corresponding relation of time.
Alternatively, the strain value that workpiece for measurement is calculated according to the distance value and the corresponding relation of time includes：Will
Strain value of the half of the difference between maximum range value and lowest distance value in preset time as workpiece for measurement.
From the foregoing, technical scheme provided by the invention is treated by controlling movement of the movable part relative to fixed part
The other end of survey workpiece, which imposes, to be cut to power, and biasing effect caused by workpiece for measurement is carried out to cutting to power using laser range finder
Quantify measurement；Further, by controlling rotation of the movable part relative to fixed part so that laser range finder can be from each angle
Spend the deformation distance to the same position on workpiece for measurement to measure, then treated by the analyzing and processing of data processing equipment
Survey the strain of workpiece.Compared with traditional traditional workpiece for measurement based on foil gauge is cut and is resistant to testing scheme to power, this technology side
Case has the advantage that：First, because laser range finder direct irradiation is on workpiece for measurement surface, is cut to power and occurred when workpiece for measurement
During deformation, laser range finder can capture the deformation of testpieces completely, in detection process without any other medium (such as
For pasting the glue of foil gauge), detection is accurate.Second, the technical program is non-contact detection, is eliminated using foil gauge
Detection method to operating personnel paste foil gauge gimmick requirement, in mass detection occasion, can at utmost ensure
It is identical with the strain measurement position of the workpiece for measurement of batch detection.3rd, because this programme is any not to pasting on workpiece for measurement
Sensor, it is not necessary to the time is spent in installing for sensor, so detection efficiency can be greatly enhanced.
Described above is only the general introduction of technical solution of the present invention, in order to better understand the technological means of the present invention,
And can be practiced according to the content of specification, and in order to allow above and other objects of the present invention, feature and advantage can
Become apparent, below especially exemplified by the embodiment of the present invention.
Brief description of the drawings
By reading the detailed description of hereafter preferred embodiment, it is various other the advantages of and benefit it is common for this area
Technical staff will be clear understanding.Accompanying drawing is only used for showing the purpose of preferred embodiment, and is not considered as to the present invention
Limitation.And in whole accompanying drawing, identical part is denoted by the same reference numerals.In the accompanying drawings：
Figure 1A shows a kind of schematic diagram of biasing effect detection means according to an embodiment of the invention；
Figure 1B shows a kind of schematic diagram of biasing effect detection means in accordance with another embodiment of the present invention；
Fig. 2 shows a kind of schematic diagram of strain detecting system according to an embodiment of the invention；
Fig. 3 shows the schematic diagram of distance value according to an embodiment of the invention and the corresponding relation of time；
Fig. 4 shows a kind of flow chart of biasing effect detection method according to an embodiment of the invention；
Fig. 5 shows a kind of flow chart of strain detecting method according to an embodiment of the invention.
Embodiment
The exemplary embodiment of the disclosure is more fully described below with reference to accompanying drawings.Although the disclosure is shown in accompanying drawing
Exemplary embodiment, it being understood, however, that may be realized in various forms the disclosure without should be by embodiments set forth here
Limited.On the contrary, these embodiments are provided to facilitate a more thoroughly understanding of the present invention, and can be by the scope of the present disclosure
Completely it is communicated to those skilled in the art.
Figure 1A shows a kind of schematic diagram of biasing effect detection means according to an embodiment of the invention, specifically,
Present embodiment illustrates the state that do not exert a force of biasing effect detection means.As shown in Figure 1A, the biasing effect detection means includes：
Fixed part 100, movable part 200 and laser range finder 300.
There is the first mounting groove 110 on the fixed part 100, there is the second mounting groove 210 on the movable part 200, treat
The one end for surveying workpiece 400 is fixed in the first mounting groove 110 of fixed part 100, and the other end of workpiece for measurement 400 is fixed on activity
In second mounting groove 210 in portion 200；Under the non-force state of the biasing effect detection means of the present embodiment, the fixed part
The center coaxial line of the second mounting groove 210 on the center and the movable part 200 of the first mounting groove 110 on 100, the axis
It is shown in broken lines in figure.In the present embodiment, dotted line institute in the direction of propagation for the laser 310 that laser range finder 300 exports and figure
The axis direction shown is vertical, and laser 310 is radiated at the position A on workpiece for measurement 400, is reflected at the A of position, Laser Measuring
Distance meter 300 is according to the distance between the outgoing position of the reflected light measurement laser 310 received and position A x1, that is, measure and treat
The distance surveyed between position A and laser range finder 300 of the workpiece 400 under non-stress laser outgoing position.
Figure 1B shows a kind of schematic diagram of biasing effect detection means in accordance with another embodiment of the present invention, specifically
Ground, present embodiment illustrates the force state of biasing effect detection means.As shown in Figure 1B, the biasing effect detection means bag
Include：Fixed part 100, movable part 200 and laser range finder 300.
There is the first mounting groove 110 on the fixed part 100, there is the second mounting groove 210 on the movable part 200, treat
The one end for surveying workpiece 400 is fixed in the first mounting groove 110 of fixed part 100, and the other end of workpiece for measurement 400 is fixed on activity
In second mounting groove 210 in portion 200；Under the force state of the biasing effect detection means of the present embodiment, the movable part 200
Pre-determined distance is moved along the direction of the axis in figure shown in dotted line, drives the second mounting groove on the movable part 200
Axis pre-determined distance described in 210 center deviation, and then the other end of workpiece for measurement 400 is driven along in figure shown in dotted line
Axis direction movement pre-determined distance.In the present embodiment, the direction of propagation for the laser 310 that laser range finder 300 exports and figure
Axis direction shown in middle dotted line is vertical, and laser 310 is radiated at the position B on workpiece for measurement 400, occurs at the B of position anti-
Penetrate, laser range finder 300 is according to the distance between the outgoing position of the reflected light measurement laser 310 received and position B x2, i.e.,
Measure the distance between position B and laser range finder 300 of the workpiece for measurement 400 under stress laser outgoing position.
Wherein, projections of the position B on axis overlaps with position A described above, i.e., laser range finder 300 is in Figure 1A-Figure 1B middle positions
Put constant, the direction of propagation of the laser 310 of output is also constant, only due to occur under stress should for workpiece for measurement 400
Become and cause irradiation position to be changed into position B from position A.
Biasing effect detection means according to Figure 1A -1B, the state that never exerts a force to force state, the phase of movable part 200
The movement of pre-determined distance occurs for fixed part 100, equivalent to imposing a certain size cut to power to workpiece for measurement 400 so that
Workpiece for measurement 400 deforms upon, and then causes the laser 310 that the laser in laser range finder 300 is sent in workpiece for measurement 400
On irradiation position be changed into position B from position A, pass through and laser output point position and laser reflection position measured under two states
The distance between x1And x2, it is recognised that in the state that do not exert a force shown in Figure 1A -1B to force state workpiece for measurement 400 vertical
It can pass through range difference (x in the deformation on the direction of axis1-x2) characterize, and then detect that force shown in Figure 1A -1B is imitated
Fruit can pass through range difference (x1-x2) characterize, wherein, the corresponding pre-determined distance that size is moved by movable part of exerting a force is come amount
Change and characterize.
In one embodiment of the invention, laser range finder 300 includes：Laser, imaging sensor and picture signal
Processor；Laser is used to export laser 310, and imaging sensor is used for the reflection for receiving the laser 310 of the laser output
Light, form corresponding picture signal；Image-signal processor is used to handle the picture signal that imaging sensor is formed, and obtains
Obtain the distance between laser outgoing position and laser reflection position.Swash for example, the laser in laser range finder 300 is semiconductor
Light device, the red laser of 620mm-680mm wavelength is exported, imaging sensor is a linear CCD array, image-signal processor
In store corresponding relation between different pixels position and distance measure on ccd array；Swashing in laser range finder 300
Light device sends laser 310, and laser 310, which is radiated in the specified location of workpiece for measurement 400, to be reflected, and reflected light enters laser
It is imaged in rangefinder 300 on linear CCD array, visual information processor determines laser reflection position with swashing according to image space
The distance between light output position.
In other embodiments of the invention, the direction of propagation for the laser 310 that the laser in laser range finder 300 is sent
It can also intersect with the axis but out of plumb, in this case, measure the distance that does not exert a force under state and force state
Afterwards, it is necessary to according to the angle calcu-lation workpiece for measurement 400 between the direction of propagation of laser 310 and the axis perpendicular to axis
Deformation on direction, it can equally characterize the biasing effect under the force state of pre-determined distance.
Fig. 2 shows a kind of schematic diagram of strain detecting system according to an embodiment of the invention.As shown in Fig. 2 should
Strain detecting system includes：Fixed part 100, movable part 200, laser range finder 300 and data processing equipment 500.
There is the first mounting groove 110 on fixed part 100, there is the second mounting groove 210, workpiece for measurement 400 on movable part 200
One end be fixed in the first mounting groove 110 of fixed part 100, the other end of workpiece for measurement 400 is fixed on the of movable part 200
In two mounting grooves 210；In the present embodiment, under non-force state, the center of the first mounting groove 110 on the fixed part 100
With the center coaxial line of the second mounting groove 210 on the movable part 200, the axis is shown in broken lines in figure, now to be measured
Workpiece 400 is in non-stress；Under force state, the movable part 200 is along the axis in figure shown in dotted line
Pre-determined distance L is moved in direction, and on this basis, the movable part 200 is further with default angular velocity omega around the axle shown in dotted line
Line rotates, and drives axis pre-determined distance L described in the center deviation of the second mounting groove 210 on the movable part 200 and to preset
Angular velocity omega rotates around the axis, so drive workpiece for measurement 400 the other end deviate dotted line shown in axial line distance L and with
Default angular velocity omega rotates around the axis, and now workpiece for measurement 400 is in stress, specifically, suffered by workpiece for measurement 400
To cutting to power by pre-determined distance L come quantization signifying on the direction of the axis shown in dotted line.
The direction of propagation for the laser 310 that laser range finder 300 exports is vertical with the axis direction shown in dotted line, is radiated at and treats
Survey workpiece 400 on, due to workpiece for measurement 400 under stress there occurs deformation and as movable part 200 is carried out periodically
Motion, the position that the laser 310 for causing laser range finder 300 to export is radiated on workpiece for measurement 400 periodically change,
But projection of the irradiation position on the axis shown in dotted line is to overlap；Laser range finder 300 receives laser according to predeterminated frequency f
310 reflected light simultaneously measures the distance between outgoing position and reflection position of laser 310.
Data processing equipment 500 is connected with laser range finder 300, in real time obtain laser range finder 300 measure obtain away from
From value, for the distance value measured according to laser range finder 300 in preset time T, distance value pass corresponding with the time is established
System, the strain value of workpiece for measurement 400 is calculated according to the distance value and the corresponding relation of time.
Fig. 3 shows the schematic diagram of distance value according to an embodiment of the invention and the corresponding relation of time, is specially
A displaying distance value of data processing equipment 500 and the interface schematic diagram of the corresponding relation of time in this programme.Such as Fig. 3 institutes
Show, in the present embodiment, movable part 200 drive workpiece for measurement 400 the other end relative to the displacement L of fixed part 100 and with
Angular velocity omega rotates, and laser range finder 300 measures a laser outgoing position with laser in workpiece for measurement 400 every time 1/f
On the distance between irradiation position, due to the Periodic Rotating of workpiece for measurement 400 so that the measurement of laser range finder 300 obtains
Distance value cyclically-varying as shown in Figure 3 occurs with the time, wherein, to ensure measurement accuracy, the survey of laser range finder 300
Measure the swing circle spaced far less than movable part 200.Specifically, when workpiece for measurement 400 is rotated near laser range finder 300
Position when, laser range finder 300 measures that obtained distance value is minimum, and the distance value should be the laser of laser range finder 300
The vertical range of axis shown in outgoing position to dotted line and workpiece for measurement 400 the strain on the direction of the axis away from
From difference；When workpiece for measurement 400 is rotated to farthest away from the position of laser range finder 300, the measurement of laser range finder 300 obtains
Distance value it is maximum, the distance value should be laser range finder 300 laser outgoing position to axis shown in dotted line it is vertical away from
From with workpiece for measurement 400 on the direction of the axis strain with a distance from and value；Therefore, data processing equipment 500
Obtained distance value and the corresponding relation of time are measured according to laser range finder 300, by maximum range value and lowest distance value it
Between difference strain value of the half as workpiece for measurement 400, that is, calculate：The other end of workpiece for measurement 400 by with
Pre-determined distance L characterize when cutting to power, perpendicular to the specified location of axis shown in dotted line occur perpendicular to the axis
Strain value.In curve map shown in this example, ordinate is distance value, and its unit is (10nm), and abscissa is the time, distance value with
Time does cyclically-varying, and using the distance value for measuring to obtain under non-stress as 0 point in this figure, the positive and negative generation of distance value
Different should the changing direction of table, it is seen then that it is respectively 512 and -526 to measure obtained maximum and minimum value, then strain is [512-
(- 526)]/2=519, i.e. the strain of workpiece for measurement 400 is 5.19um.
According to the strain detecting system shown in Fig. 2-Fig. 3, it can detect and exist by certain workpiece for measurement when cutting to power
The strain that specified location occurs, it can apply in the strain detecting experiment to the part in air equipment, to ensure aviation
Stability of the equipment in flight environment of vehicle, the strain standard of every kind of part has the regulation of standardization, for example, part 1 is one
Length is 15cm pipeline, during using part 1 as workpiece for measurement, be specify that in the regulation of standardization：On the axis of the part 1
, opening position with one end distance 5mm of the part 1, in the standard value of the strain on the direction of the axis of the part 1
For 5um；Then using the strain detecting system shown in Fig. 2, the first mounting groove one end of part 1 being fixed on fixed part 100
In 110, the other end of part 1 is fixed in the second mounting groove 210 on movable part 200, what laser range finder 300 exported swashs
Light vertical irradiation is on part 1 and one end that irradiation position distance is fixed in the first mounting groove 110 of fixed part 1 is 5mm, will
Movable part 200 moves a certain distance along the direction perpendicular to axis, and rotates about the axis some circles with a fixed angular speed, by swashing
Optar 300 obtains zero according to the adjust the distance processing to measured value of measurement and data processing equipment 500 of value of certain frequency
The strain of part 1, when the strain size is equal to 5um, it is determined that the corresponding movement of movable part 200 in a direction perpendicular to the axis
Distance is 170um；Testing fatigue further then is carried out to part 1 under this standard, maintains the 170um displacements constant, band
Dynamic movable part 200 rotates about the axis 107Circle, if part 1 is broken during testing fatigue, illustrate the anti-of the part 1
Fatigability is poor, is not inconsistent standardization requirement；If part 1 is after testing fatigue terminates without the bad phenomenons such as generation fracture, explanation
The fatigue resistance of the part 1 is good, meets standard requirement.
Fig. 4 shows a kind of flow chart of biasing effect detection method according to an embodiment of the invention., such as Fig. 4 institutes
Show, this method includes：
Step S410, one end of workpiece for measurement is fixed in the first mounting groove on fixed part, by the another of workpiece for measurement
One end is fixed in the second mounting groove on movable part；Wherein, the center of the first mounting groove on the fixed part and the work
The center coaxial line of the second mounting groove in dynamic portion.
Step S420, the movable part is moved into pre-determined distance along perpendicular to the direction of the axis so that the activity
Axis pre-determined distance described in the center deviation of the second mounting groove in portion, the other end of workpiece for measurement is driven along perpendicular to the axle
The direction movement pre-determined distance of line.
Step S430, adjust the position of laser range finder so that the direction of propagation of the laser of laser range finder output and institute
Axis is stated to intersect and be radiated in the specified location of workpiece for measurement；Laser outgoing position is measured using laser range finder and laser is anti-
Penetrate the distance between position.
It can be seen that the method shown in Fig. 4 is by controlling movement of the movable part relative to fixed part, to the other end of workpiece for measurement
Impose and cut to power, then quantization measurement is carried out to biasing effect caused by workpiece for measurement to cutting to power by laser range finder.With
Traditional being cut based on strain measurement to power is compared to the scheme of biasing effect caused by workpiece for measurement, the technical program have with
Lower advantage：First, because laser range finder direct irradiation is on workpiece for measurement surface, is cut to power and deformed upon when workpiece for measurement
When, laser range finder can capture the deformation of testpieces completely, (for example be used for without any other medium in detection process
Paste the glue of foil gauge), detection is accurate.Second, the biasing effect method of this programme is contactless, is eliminated using strain
The detection method of piece pastes the requirement of foil gauge gimmick to operating personnel, in mass detection occasion, can at utmost protect
Demonstrate,prove identical with the strain measurement position of the workpiece for measurement of batch detection.3rd, because this programme is not appointed to stickup on workpiece for measurement
What sensor, it is not necessary to the time is spent in installing for sensor, so detection efficiency can be greatly enhanced.
It is described to utilize laser range finder measurement laser outgoing position and laser reflection position in one embodiment of invention
The distance between include：Laser is exported using the laser in laser range finder；Utilize the imaging sensor in laser range finder
The reflected light of the laser of the laser output is received, forms corresponding picture signal；Believed using the image in laser range finder
The picture signal that number processor is formed to described image sensor is handled, and obtains laser outgoing position and laser reflection position
The distance between.
In one embodiment of invention, the direction of propagation of the laser of the laser range finder output is hung down with the axis
Directly.
Fig. 5 shows a kind of flow chart of strain detecting method according to an embodiment of the invention.As shown in figure 5, should
Method includes：
Step S510, one end of workpiece for measurement is fixed in the first mounting groove on fixed part, by the another of workpiece for measurement
One end is fixed in the second mounting groove on movable part；Wherein, the center of the first mounting groove on the fixed part and the work
The center coaxial line of the second mounting groove in dynamic portion.
Step S520, the movable part is moved into pre-determined distance along perpendicular to the direction of the axis so that the activity
Axis pre-determined distance described in the center deviation of the second mounting groove in portion；And the movable part is driven further with preset angle
Speed rotates around the axis so that is revolved with default angular speed around the axis at the center of the second mounting groove on the movable part
Turn；The other end of workpiece for measurement is driven to move pre-determined distance and with default angular speed around described along perpendicular to the direction of the axis
Axis rotates.
Step S530, adjust the position of laser range finder so that the direction of propagation for the laser that laser range finder is sent and institute
Axis is stated to intersect and be radiated in the specified location of workpiece for measurement.
Step S540, measured using laser range finder according to predeterminated frequency between laser outgoing position and laser reflection position
Distance.
Step S550, the distance value exported using data processing equipment according to the laser range finder in preset time,
Distance value and the corresponding relation of time are established, the strain of workpiece for measurement is calculated according to the distance value and the corresponding relation of time
Value.
In one embodiment of the invention, it is described that workpiece for measurement is calculated according to the distance value and the corresponding relation of time
Strain value include：Difference between maximum range value and lowest distance value that laser range finder measurement in preset time is obtained
Strain value of the half as workpiece for measurement.
It should be noted that each embodiment of the method shown in Fig. 4-Fig. 5 phase corresponding with each embodiment shown in Fig. 1-Fig. 3
Together, above described in detail, will not be repeated here.
In summary, technical scheme provided by the invention is by controlling movement of the movable part relative to fixed part, to be measured
The other end of workpiece, which imposes, to be cut to power, using laser range finder to cutting to power to the biasing effect amount of progress caused by workpiece for measurement
Change measurement；Further, by controlling rotation of the movable part relative to fixed part so that laser range finder can be from all angles
Deformation distance to the same position on workpiece for measurement measures, then is obtained by the analyzing and processing of data processing equipment to be measured
The strain of workpiece.Compared with traditional traditional workpiece for measurement based on foil gauge is cut and is resistant to testing scheme to power, the technical program
Have the advantage that：First, because laser range finder direct irradiation is on workpiece for measurement surface, is cut when workpiece for measurement to power and shape occurs
During change, laser range finder can capture the deformation of testpieces completely, (for example be used without any other medium in detection process
To paste the glue of foil gauge), detection is accurate.Second, the technical program is contactless, eliminates the detection using foil gauge
Method pastes the requirement of foil gauge gimmick to operating personnel, in mass detection occasion, can at utmost ensure same batch
The strain measurement position of the workpiece for measurement of detection is identical.3rd, because this programme is not to pasting any sensor on workpiece for measurement,
The time need not be spent in installing for sensor, so detection efficiency can be greatly enhanced.
The foregoing is merely illustrative of the preferred embodiments of the present invention, is not intended to limit the scope of the present invention.It is all
Any modification, equivalent substitution and improvements made within the spirit and principles in the present invention etc., are all contained in protection scope of the present invention
It is interior.
Claims (10)
1. a kind of biasing effect detection means, it is characterised in that the device includes：Fixed part, movable part and laser range finder；
There is the first mounting groove on the fixed part, there is the second mounting groove on the movable part；
Under the non-force state of the biasing effect detection means, the center of the first mounting groove on the fixed part and described
The center coaxial line of the second mounting groove on movable part；Under the force state of the biasing effect detection means, the activity
Portion drives the center deviation institute of the second mounting groove on the movable part along pre-determined distance is moved perpendicular to the direction of the axis
State axis pre-determined distance；
The direction of propagation of the laser of the laser range finder output is intersected with the axis, and the laser range finder is sharp for measuring
The distance between light output position and laser reflection position.
2. device as claimed in claim 1, it is characterised in that the laser range finder includes：Laser, imaging sensor and
Image-signal processor；
Laser is used to export laser；
Described image sensor is used for the reflected light for receiving the laser of the laser output, forms corresponding picture signal；
Described image signal processor is used to handle the picture signal of described image sensor output, obtains laser output
The distance between position and laser reflection position.
3. device as claimed in claim 1, it is characterised in that
The direction of propagation of the laser of the laser range finder output is vertical with the axis.
4. a kind of strain detecting system, it is characterised in that the system includes：Such as the force any one of claim 1-3
Effect detection device, and, data processing equipment；
Under the force state of the biasing effect detection means, the movable part is further with default angular speed around the axis
Rotation, the second mounting groove on the movable part is driven to be rotated with default angular speed around the axis；
The laser range finder is according to predeterminated frequency measurement the distance between laser outgoing position and laser reflection position value；
The data processing equipment is used for the distance value measured according to the laser range finder in preset time, establishes distance value
With the corresponding relation of time, strain value is calculated according to the distance value and the corresponding relation of time.
5. system as claimed in claim 4, it is characterised in that
The data processing equipment is used for the maximum range value and minimum range for obtaining laser range finder measurement in preset time
The half of difference between value is as strain value.
6. a kind of biasing effect detection method, it is characterised in that this method includes：
One end of workpiece for measurement is fixed in the first mounting groove on fixed part, the other end of workpiece for measurement is fixed on activity
In the second mounting groove in portion；Wherein, the second peace on the center and the movable part of the first mounting groove on the fixed part
The center coaxial line of tankage；
The movable part is moved into pre-determined distance along perpendicular to the direction of the axis so that the second installation on the movable part
Axis pre-determined distance described in the center deviation of groove, drive the other end of workpiece for measurement pre- along being moved perpendicular to the direction of the axis
If distance；
Adjust the position of laser range finder so that intersect and shine with the axis in the direction of propagation of the laser of laser range finder output
Penetrate in the specified location of workpiece for measurement；Using laser range finder measure between laser outgoing position and laser reflection position away from
From.
7. method as claimed in claim 6, it is characterised in that described using laser range finder measurement laser outgoing position and sharp
The distance between light reflection position includes：
Laser is exported using the laser in laser range finder；
The reflected light of the laser of the laser output is received using the imaging sensor in laser range finder, forms corresponding figure
As signal；
The picture signal formed using the image-signal processor in laser range finder to described image sensor is handled, and is obtained
Obtain the distance between laser outgoing position and laser reflection position.
8. method as claimed in claim 6, it is characterised in that
The direction of propagation of the laser of the laser range finder output is vertical with the axis.
A kind of 9. strain detecting method, it is characterised in that this method includes：
One end of workpiece for measurement is fixed in the first mounting groove on fixed part, the other end of workpiece for measurement is fixed on activity
In the second mounting groove in portion；Wherein, the second peace on the center and the movable part of the first mounting groove on the fixed part
The center coaxial line of tankage；
The movable part is moved into pre-determined distance along perpendicular to the direction of the axis so that the second installation on the movable part
Axis pre-determined distance described in the center deviation of groove；And the movable part is driven further with default angular speed around the axis
Rotation so that the center of the second mounting groove on the movable part is rotated with default angular speed around the axis；Drive work to be measured
Pre-determined distance is moved perpendicular to the direction of the axis and is rotated with default angular speed around the axis in the other end edge of part；
Adjust the position of laser range finder so that intersect and shine with the axis in the direction of propagation for the laser that laser range finder is sent
Penetrate in the specified location of workpiece for measurement；
Using laser range finder the distance between laser outgoing position and laser reflection position are measured according to predeterminated frequency；
The distance value exported using data processing equipment according to the laser range finder in preset time, establish distance value and when
Between corresponding relation, the strain value of workpiece for measurement is calculated according to the distance value and the corresponding relation of time.
10. method as claimed in claim 9, it is characterised in that described according to the distance value and the corresponding relation meter of time
Calculating the strain value of workpiece for measurement includes：
The half of difference between maximum range value and lowest distance value that laser range finder measurement in preset time is obtained is made
For the strain value of workpiece for measurement.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610374627.2A CN107449662B (en) | 2016-05-31 | 2016-05-31 | Force application effect detection device and method and strain detection system and method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610374627.2A CN107449662B (en) | 2016-05-31 | 2016-05-31 | Force application effect detection device and method and strain detection system and method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN107449662A true CN107449662A (en) | 2017-12-08 |
| CN107449662B CN107449662B (en) | 2024-04-09 |
Family
ID=60484993
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610374627.2A Active CN107449662B (en) | 2016-05-31 | 2016-05-31 | Force application effect detection device and method and strain detection system and method |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN107449662B (en) |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2004325403A (en) * | 2003-04-28 | 2004-11-18 | Shimadzu Corp | Material testing machine |
| CN101685003A (en) * | 2008-09-25 | 2010-03-31 | 向熙科技股份有限公司 | Measurement system and method for measuring deformation values in noncontact way |
| CN104014613A (en) * | 2014-05-27 | 2014-09-03 | 中国重型机械研究院股份公司 | Non-contact laser online detection bar straightness mechanism and detection method |
| CN204043626U (en) * | 2013-12-11 | 2014-12-24 | 中咨公路养护检测技术有限公司 | A kind of resistance to deformation measuring device of antiglare shield |
| CN204255782U (en) * | 2014-11-26 | 2015-04-08 | 浙江吉利汽车研究院有限公司 | A kind of simple wire dynamic fatigue test device |
| CN105571505A (en) * | 2015-12-17 | 2016-05-11 | 西北工业大学 | Real-time measurement method and device for deformation of formed part in additive manufacturing process |
| CN205786103U (en) * | 2016-05-31 | 2016-12-07 | 邹如飞 | A kind of biasing effect detection device and strain detecting system |
-
2016
- 2016-05-31 CN CN201610374627.2A patent/CN107449662B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2004325403A (en) * | 2003-04-28 | 2004-11-18 | Shimadzu Corp | Material testing machine |
| CN101685003A (en) * | 2008-09-25 | 2010-03-31 | 向熙科技股份有限公司 | Measurement system and method for measuring deformation values in noncontact way |
| CN204043626U (en) * | 2013-12-11 | 2014-12-24 | 中咨公路养护检测技术有限公司 | A kind of resistance to deformation measuring device of antiglare shield |
| CN104014613A (en) * | 2014-05-27 | 2014-09-03 | 中国重型机械研究院股份公司 | Non-contact laser online detection bar straightness mechanism and detection method |
| CN204255782U (en) * | 2014-11-26 | 2015-04-08 | 浙江吉利汽车研究院有限公司 | A kind of simple wire dynamic fatigue test device |
| CN105571505A (en) * | 2015-12-17 | 2016-05-11 | 西北工业大学 | Real-time measurement method and device for deformation of formed part in additive manufacturing process |
| CN205786103U (en) * | 2016-05-31 | 2016-12-07 | 邹如飞 | A kind of biasing effect detection device and strain detecting system |
Also Published As
| Publication number | Publication date |
|---|---|
| CN107449662B (en) | 2024-04-09 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| KR101804484B1 (en) | Sensor device and residual stress detection system employing same | |
| CN107688051B (en) | A kind of measurement method of the subsurface defect width based on Laser thermo-elastic generated surface acoustic waves | |
| EP2669672B1 (en) | Apparatus and method for inspecting a tube | |
| JP2018513976A (en) | Phased array system for inspection of laser welds | |
| JP6990500B2 (en) | Fiber Optic Shape Sensing Technology for NDE Survey Encoding | |
| CN106017371B (en) | The measuring device and its method of surface defect opening width based on laser-ultrasound | |
| CN104634741A (en) | Laser ultrasonic detection method and laser ultrasonic detection system for rapidly locating defects | |
| CN102721746A (en) | Double-manipulator ultrasonic transmission detection device | |
| CN101178386B (en) | Ultrasonic wave automatic detection system of copper and non-corrodible steel variety metal vacuum brazing water joint | |
| CN105203635A (en) | Surface wave detection method for longitudinal defect on outer surface of small-diameter tube | |
| CN103977949A (en) | Flexible comb-shaped guided wave phased array transducer | |
| CN105136903A (en) | Cylindrical curved surface work-piece butt joint welding seam lateral defect detection apparatus and cylindrical curved surface work-piece butt joint welding seam lateral defect detection method | |
| CN102519717B (en) | Ultrasonic reflectivity extraction system which detects revolution composition surface contact characteristic and method thereof | |
| CN103983699A (en) | Flexible comb-shaped acoustic surface wave phased-array energy converter | |
| CN105842340A (en) | Oil tanker anchor chain nondestructive detection device and detection method thereof | |
| CN104931167B (en) | Fixed line feed apparatus of ultrasonic probe in ultrasonic wave stress measurement system | |
| EP3781937B1 (en) | A robot system and method for non-destructive testing | |
| CN103990592A (en) | Flexible comb-shaped wave guiding transducer suitable for curved plate tubing part detecting | |
| CN205786103U (en) | A kind of biasing effect detection device and strain detecting system | |
| CN104165926A (en) | Ultrasonic detection method and ultrasonic analysis method | |
| CN101672633A (en) | Automatic detection device of cylindricity of magnetic roller | |
| CN105510442A (en) | Dynamic linkage focus detection method adopting multiple phased array probes | |
| CN107655974A (en) | A kind of TOFD automatic scannings device | |
| US11047831B2 (en) | Nondestructive inspection apparatus and methods of use | |
| CN107449662A (en) | A kind of biasing effect detection means and method and strain detecting system and method |
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 |