CN107219168A - A kind of advance damage intelligent injury detector - Google Patents
A kind of advance damage intelligent injury detector Download PDFInfo
- Publication number
- CN107219168A CN107219168A CN201710650220.2A CN201710650220A CN107219168A CN 107219168 A CN107219168 A CN 107219168A CN 201710650220 A CN201710650220 A CN 201710650220A CN 107219168 A CN107219168 A CN 107219168A
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- advance damage
- component
- advance
- damage
- groove
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- 230000006378 damage Effects 0.000 title claims abstract description 105
- 208000027418 Wounds and injury Diseases 0.000 title claims abstract description 27
- 208000014674 injury Diseases 0.000 title claims abstract description 27
- 239000011888 foil Substances 0.000 claims abstract description 19
- 238000012545 processing Methods 0.000 claims abstract description 13
- 238000001514 detection method Methods 0.000 claims description 7
- 230000002262 irrigation Effects 0.000 abstract 1
- 238000003973 irrigation Methods 0.000 abstract 1
- 208000037656 Respiratory Sounds Diseases 0.000 description 4
- 230000000694 effects Effects 0.000 description 4
- 238000000034 method Methods 0.000 description 3
- 238000011160 research Methods 0.000 description 3
- 238000012360 testing method Methods 0.000 description 3
- 230000007547 defect Effects 0.000 description 2
- 230000005284 excitation Effects 0.000 description 2
- 238000005259 measurement Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 230000004888 barrier function Effects 0.000 description 1
- 238000013480 data collection Methods 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 239000004744 fabric Substances 0.000 description 1
- PCHJSUWPFVWCPO-UHFFFAOYSA-N gold Chemical compound [Au] PCHJSUWPFVWCPO-UHFFFAOYSA-N 0.000 description 1
- 239000010931 gold Substances 0.000 description 1
- 229910052737 gold Inorganic materials 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 230000035945 sensitivity Effects 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N19/00—Investigating materials by mechanical methods
- G01N19/08—Detecting presence of flaws or irregularities
Abstract
The invention discloses a kind of advance damage intelligent injury detector, its drip irrigation device is, including for the advance damage component bonded to each other with component crack surface to be measured, advance damage component is detachably fixed with component to be measured and is connected, advance damage external surface of structural member is pasted with some foil gauges, the input and output end of each foil gauge are electrically connected with data acquisition device by wire, data acquisition device has been sequentially connected electrically data processing equipment and display analytical equipment by wire, the present invention is intended to provide a kind of advance damage intelligent injury detector, can accurately determination means surface and inside crack position and degree of injury, reduce the possibility that damage is failed to judge and misjudged.
Description
Technical field
Prevented and reduced natural disasters field the present invention relates to engineering structure, more specifically, it relates to which a kind of advance damage intelligent injury is visited
Survey device.
Background technology
Permitted multimember fracture accident in engineering to be all made up of underbead crack or defect, therefore on component crackle
The research of problem turns into one of central issue of domestic and international fracture mechanics research.At present, the conventional crack detection of engineering field
Method and its defect of presence are：1. observation, is mainly used in component surface crack detection, it is necessary to fracture width is wider, identification
Efficiency and precision are relatively low；2. supercritical ultrasonics technology, using the crackle on inside ultrasonic equipment detection means and surface, but due to noise and
The more complicated limitation of concrete material, accuracy of identification is not high, easily fails to judge and judges by accident；3. acoustic emission is detected, passes through sound
Emission detection system is judged to the germinating position of crackle and spread scenarios, but, it is necessary to pre-buried crystalline substance during actually detected
Piece equipment, and to monitor in real time, the time is missed there may be failing to judge, it is less practical, at present also in the scientific research stage.
To sum up, how to provide it is a kind of being capable of accurately determination means surface and underbead crack position and degree of injury size
Damage detection device, is the technical barrier that those skilled in the art remain unsolved.
The content of the invention
In view of the deficienciess of the prior art, it is an object of the invention to provide a kind of advance damage intelligent injury detector,
It is capable of the crack position and degree of injury of accurately determination means surface and inside, reduces the damage possibility failing to judge and misjudge.
To achieve the above object, the invention provides following technical scheme：A kind of advance damage intelligent injury detector, including
For the advance damage component bonded to each other with component crack surface to be measured, the advance damage component is detachably fixed company with component to be measured
Connect, the advance damage external surface of structural member is pasted with some foil gauges, the input and output end of each foil gauge pass through
Wire is electrically connected with data acquisition device, and the data acquisition device has been sequentially connected electrically data processing equipment and aobvious by wire
Show analytical equipment.
It is preferred that, the advance damage component is spliced by the first advance damage metallic rod and the second advance damage metallic rod, institute
State the first advance damage metallic rod and the second advance damage metallic rod lower surface to set in coplanar shape, in the first advance damage metallic rod
Gap is provided between the first groove of some rectangular-shapes, adjacent first groove of each two and forms wide along its length on surface
Degree and first the first lug boss of groove identical, the second advance damage metallic rod upper surface is along its length in each first
Lug boss corresponding position offer with first the second groove of groove shapes identical, in each first groove and the second groove
It is provided with foil gauge.
It is preferred that, the data processing equipment is electrically connected with alarm.
It is preferred that, the advance damage component is provided at both ends with for being detachably fixed the fixed bit being connected with component to be measured,
The fixed bit outer surface is provided with lower clamping piece, and external surface of structural member to be measured is provided with upper clip in lower clamping piece corresponding position, institute
State and fastening screw and nut are connected between upper clip and lower clamping piece.
It is preferred that, the data acquisition device is the data collecting cards of NI USB 6211.
It is preferred that, the data processing equipment is NI CompactRIO embedded platforms.
It is preferred that, the display analytical equipment is display screen.
The technical scheme has compared with prior art：Based on strain effect principle, using injury region strain and stress compared with
Big the characteristics of, foil gauge can flutter the change for grasping rigidity at this rapidly, so as to judge the position of damage, and can be become according to strain
Changing is worth size to judge the size of degree of injury, solves not high existing damnification recognition method precision and easy misjudgement, fails to judge
The problem of.
Brief description of the drawings
Fig. 1 is a kind of structural representation of advance damage intelligent injury detector embodiment of the invention.
Fig. 2 is the structural representation of advance damage component.
In figure：1st, component to be measured；2nd, advance damage component；3rd, foil gauge；4th, data acquisition device；5th, data processing equipment；
6th, analytical equipment is shown；7th, alarm；8th, lower clamping piece；9th, upper clip；10th, fastening screw；11st, nut；21st, the first advance damage gold
Belong to bar；22nd, the second advance damage metallic rod；211st, the first groove；212nd, the first lug boss；221st, the second groove.
Embodiment
A kind of advance damage intelligent injury detector embodiment of the invention is described further referring to figs. 1 to Fig. 2.
As shown in figure 1, this advance damage intelligent injury detector includes advance damage component 2, the outer surface of advance damage component 2 is glued
Some foil gauges 3 are posted, the position of foil gauge 3 is that the input and output end of each foil gauge 3 are by leading at advance damage
Line is electrically connected with data acquisition device 4, and data acquisition device 4 is electrically connected with data processing equipment 5 and display analytical equipment 6 successively
Connect, the advance damage component 2 in detector is fixed on component to be detected, under environmental load excitation, application data collection dress
Put the strain variation of foil gauge 3 at 4 collection advance damages；By the change of the gathered data to analyze of data processing equipment 5, and
Intuitively shown in display analytical equipment 6, based on strain effect principle, the stress and strain in component to be detected can change,
Using injury region strain and stress it is relatively larger elsewhere the characteristics of, foil gauge 3 can flutter the change for grasping rigidity at this rapidly
Change, so as to judge the position of damage, and according to strain variation size can be worth to judge the size of degree of injury, efficiently solved
Existing damnification recognition method precision is high and easy misjudgement, the problem of fail to judge.
Specific works mode is described below：
As shown in figure 1, according to the size and resemblance of tested component, selecting the suitable length of advance damage component 2；Selection
The advance damage Smart Detector of good length is fixed on tested component；Each position of foil gauge 3 is that at advance damage, application environment swashs
Shake（Such as wind shake）Or artificial excitation（Such as vibrator）To test the change strained at each advance damage；According to the difference of strain come
Test the position of damage and the size of degree of injury.
As shown in Fig. 2 advance damage component 2 spliced by the first advance damage metallic rod 21 and the second advance damage metallic rod 22 and
Into the first advance damage metallic rod 21 and the lower surface of the second advance damage metallic rod 22 are set in coplanar shape, during detection, by the first pre- damage
The lower surface for hindering the advance damage metallic rod 22 of metallic rod 21 and second is fitted with component 1 to be measured, the upper table of the first advance damage metallic rod 21
Gap is provided with shape between the first groove 211 of some rectangular-shapes, adjacent first groove 211 of each two along its length in face
Into width and the first lug boss of identical 212 of the first groove 211, the upper surface of the second advance damage metallic rod 22 along its length in
Each corresponding position of first lug boss 212 is offered and the second groove of shape identical 221 of the first groove 211, the technical side
In case, at the first groove 211 and the second groove 221 for the advance damage of device at, foil gauge 3 is pasted on the first groove 211 and the
In two grooves 221, spacing effect can be played, prevent foil gauge 3 from coming off, protection foil gauge 3 and wire can also be played
The first groove 211 and the second groove 221 of effect, the first advance damage metallic rod 21 and the second advance damage metallic rod 22 are in staggeredly cloth
Put, it is ensured that all there is same measurement sensitivity along the crackle on the tested any section in component length direction, prevent
Fail to judge；And during actually detected, can be according to design advance damage length the need for measurement accuracy, advance damage length is shorter,
（I.e. the first groove 211 and the width of the second groove 221 are smaller）, the adjacent spacing of first groove 211 is narrower（I.e. density is more concentrated）, survey
The precision of amount is higher, and then can accurately judge damage position and degree.
As shown in figure 1, data processing equipment 5 is electrically connected with alarm 7, the analysis of data processing equipment 5 institute gathered data
When change exceedes setting value, you can judge that the degree of injury of component 1 to be measured is larger, alarm is sent to the generation order of alarm 7.
As described in Figure 1, advance damage component 2 is provided at both ends with for being detachably fixed the fixed bit being connected with component 1 to be measured
（Referring to position at Fig. 1 a）, fixed bit length determines that fixed bit outer surface is provided with by the profile and size that are tested component
Lower clamping piece 8, the outer surface of component 1 to be measured is provided with upper clip 9 in the corresponding position of lower clamping piece 8, between upper clip 9 and lower clamping piece 8
Fastening screw 10 is set, and is clamped by nut 11, advance damage intelligent injury detector is realized and reinforced.
As preferred, data acquisition device 4 is data collecting card, model NI USB 6211.
As preferred, data processing equipment 5 is NI CompactRIO embedded platforms, and I/0 can be reset based on NI
(RIO) technology and field programmable gate array（FPGA）Technology, not only possesses the data acquisition of legacy test system, transmits and deposit
The functional modules such as storage, and real-time is stronger, performance is more stable.
As preferred, display analytical equipment 6 is display screen.
Described above is only the preferred embodiment of the present invention, and protection scope of the present invention is not limited merely to above-mentioned implementation
Example, all technical schemes belonged under thinking of the present invention belong to protection scope of the present invention.It should be pointed out that for the art
Those of ordinary skill for, some improvements and modifications without departing from the principles of the present invention, these improvements and modifications
It should be regarded as protection scope of the present invention.
Claims (7)
1. a kind of advance damage intelligent injury detector, it is characterized in that：Including for bonded to each other with component to be measured (1) crack surface
Advance damage component (2), the advance damage component (2) is detachably fixed with component to be measured (1) to be connected, the advance damage component (2)
Outer surface is pasted with some foil gauges (3), and the input and output end of each foil gauge (3) are electrically connected with by wire
Data acquisition device (4), the data acquisition device (4) has been sequentially connected electrically data processing equipment (5) and display by wire
Analytical equipment (6).
2. a kind of advance damage intelligent injury detection according to claim 1, it is characterized in that：The advance damage component (2) by
First advance damage metallic rod (21) and the second advance damage metallic rod (22) are spliced, the first advance damage metallic rod (21) and
Second advance damage metallic rod (22) lower surface is set in coplanar shape, and the first advance damage metallic rod (21) upper surface is along its length
Direction gap is provided between the first groove (211) of some rectangular-shapes, adjacent first groove (211) of each two and forms width
With the first groove (211) the first lug boss of identical (212), the second advance damage metallic rod (22) upper surface along its length side
Offered and the first groove (211) the second groove of shape identical in each first lug boss (212) corresponding position
(221), it is provided with foil gauge (3) in each first groove (211) and the second groove (221).
3. a kind of advance damage intelligent injury detector according to claim 1, it is characterized in that：The data processing equipment
(5) it is electrically connected with alarm (7).
4. a kind of advance damage intelligent injury detector according to claim 1, it is characterized in that：The advance damage component (2)
It is provided at both ends with for being detachably fixed the fixed bit being connected with component to be measured (1), the fixed bit outer surface is provided with lower folder
Piece (8), component (1) outer surface to be measured is provided with upper clip (9) in lower clamping piece (8) corresponding position, the upper clip (9) and under
Fastening screw (10) and nut (11) are connected between intermediate plate (8).
5. a kind of advance damage intelligent injury detector according to claim 1 or 2 or 3, it is characterized in that：The data acquisition
Device (4) is the data collecting cards of NI USB 6211.
6. a kind of advance damage intelligent injury detector according to claim 1 or 2 or 3, it is characterized in that：The data processing
Device (5) is NI CompactRIO embedded platforms.
7. a kind of advance damage intelligent injury detector according to claim 1 or 2 or 3, it is characterized in that：The display analysis
Device (6) is display screen.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710650220.2A CN107219168B (en) | 2017-08-02 | 2017-08-02 | Pre-damage intelligent damage detector |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710650220.2A CN107219168B (en) | 2017-08-02 | 2017-08-02 | Pre-damage intelligent damage detector |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN107219168A true CN107219168A (en) | 2017-09-29 |
| CN107219168B CN107219168B (en) | 2024-03-29 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710650220.2A Active CN107219168B (en) | 2017-08-02 | 2017-08-02 | Pre-damage intelligent damage detector |
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