CN205157493U - Sheet metal crazing line ultrasonic testing positioner - Google Patents
Sheet metal crazing line ultrasonic testing positioner Download PDFInfo
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- CN205157493U CN205157493U CN201520844556.9U CN201520844556U CN205157493U CN 205157493 U CN205157493 U CN 205157493U CN 201520844556 U CN201520844556 U CN 201520844556U CN 205157493 U CN205157493 U CN 205157493U
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- ultrasonic sensor
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- 229910052751 metal Inorganic materials 0.000 title claims abstract description 15
- 239000002184 metal Substances 0.000 title claims abstract description 15
- 238000001514 detection method Methods 0.000 claims abstract description 16
- 238000002955 isolation Methods 0.000 claims abstract description 13
- 239000000523 sample Substances 0.000 claims abstract 6
- 239000000463 material Substances 0.000 description 3
- 238000002604 ultrasonography Methods 0.000 description 3
- 208000037656 Respiratory Sounds Diseases 0.000 description 2
- 239000004411 aluminium Substances 0.000 description 2
- 229910052782 aluminium Inorganic materials 0.000 description 2
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 2
- 230000007547 defect Effects 0.000 description 2
- 230000007812 deficiency Effects 0.000 description 2
- 230000003993 interaction Effects 0.000 description 2
- 230000035945 sensitivity Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 230000008878 coupling Effects 0.000 description 1
- 238000010168 coupling process Methods 0.000 description 1
- 238000005859 coupling reaction Methods 0.000 description 1
- 239000006185 dispersion Substances 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000005284 excitation Effects 0.000 description 1
- 238000001914 filtration Methods 0.000 description 1
- 238000003384 imaging method Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 230000000644 propagated effect Effects 0.000 description 1
- 238000004445 quantitative analysis Methods 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
Landscapes
- Investigating Or Analyzing Materials By The Use Of Ultrasonic Waves (AREA)
Abstract
本实用新型涉及一种金属薄板微裂纹超声检测定位装置。本实用新型由三维精密运动机构、支架、二维环形相控探头、隔振台、超声波传感器、信号发生器、计算机和示波器组成。在所述的三维精密运动机构铺设有用于放置待检金属薄板的隔振台，所述的二维环形相控探头位于待检金属薄板的正上方，且由U型支架的一端固定，U型支架的另一端固定在隔振台的一个边沿上；在该边沿上还同时设置有超声波传感器，所述超声波传感器的输出端连接至示波器的信号输入端，示波器的信号输出端与计算机的输入端连接，计算机的输出端与信号发生器的输入端连接，信号发生器的输出端与二维环形相控探头连接。本实用新型结构简单，能实现快速、低成本的检测。
The utility model relates to an ultrasonic detection and positioning device for micro-cracks in thin metal plates. The utility model is composed of a three-dimensional precision motion mechanism, a bracket, a two-dimensional annular phase-controlled probe, a vibration isolation table, an ultrasonic sensor, a signal generator, a computer and an oscilloscope. A vibration isolation table for placing the metal sheet to be inspected is laid on the three-dimensional precision motion mechanism. The two-dimensional annular phase-controlled probe is located directly above the metal sheet to be inspected, and is fixed by one end of a U-shaped bracket. The other end of the bracket is fixed on an edge of the vibration isolation table; an ultrasonic sensor is also arranged on the edge, the output end of the ultrasonic sensor is connected to the signal input end of the oscilloscope, and the signal output end of the oscilloscope is connected to the input end of the computer. To connect, the output end of the computer is connected with the input end of the signal generator, and the output end of the signal generator is connected with the two-dimensional annular phase-controlled probe. The utility model has a simple structure and can realize rapid and low-cost detection.
Description
Technical field
The utility model belongs to detection technique field, is specifically related to a kind of sheet metal micro-crack Ultrasonic Detection locating device.
Background technology
Conventional Ultrasound detection method is detected by the linear feature such as reflection, decay, transmission of transmitting signal, but because the reflection echo intensity of micro-crack is low, transmissivity is high, decay the reason such as little, causes conventional Ultrasound detection method insensitive to micro-crack.Domestic and international researcher finds that the non-linear behavior that material internal fatigue damage causes well can be reflected by non-linear ultrasonic detection method.It is when utilizing ultrasound wave to propagate in the material that non-linear ultrasonic detects, the nonlinear response signal that medium or tiny flaw and its interaction produce, and carries out the assessment of material property and the detection of tiny flaw.Chatter modulation is the one in non-linear ultrasonic detection method, by high-frequency ultrasonic and microcrack interaction, two row sound waves just can be made to produce Non-linear coupling.It has higher sensitivity to contact deficiency, may be used for detection of complex constitutional detail and large-scale component and structure far-end thereof, so receiving increasing concern.But non-linear ultrasonic detection method can only detect the existence of micro-crack, the location to micro-crack can not be realized.
Research shows, can compensate the sound wave that the frequency dispersion of supersonic guide-wave, multi-mode and multipath effect cause time reversal and defocuses and distort, not need the priori of propagation medium and transducer array just can realize the adapted local cosine transform of acoustic wave energy.Therefore, Ultrasonic Detection and time reversal are combined the location and Enhanced Imaging that realize damage, become a study hotspot in recent years.After referring to that sensor array receives the signal of source emission time reversal, again launched by corresponding receiving sensor unit respectively again after being carried out time domain reversion, namely send out after arriving first, arrive afterwards and first send out, that different array element sends, sound source position will be arrived along the signal of different propagated simultaneously, produce superposition and focus on.
Utilize Nonlinear acoustic wave imperfection sensitivity and time reversal sound wave self-focusing characteristic, nonlinear acoustics and time reversal acoustics combine and be applied to the microcrack zone of sheet metal, realize the accurate quantitative analysis to defect and location, have important practical value.
With the key of time reversal determination micro-crack position be determine in structure time anti-acoustic wave energy space distribution, be generally utilize laser vibration measurer solid plate surface to be scanned to the distribution judging acoustic wave energy now.This installation cost is high, complicated operation, and impracticable.
Summary of the invention
The utility model, for the deficiencies in the prior art, provides a kind of sheet metal micro-crack Ultrasonic Detection locating device.
For overcoming the above problems, the utility model have employed following technological means:
The utility model is made up of three-dimensional precise motion, support, two-dimensional annular phased array transducer, vibration isolation table, ultrasonic sensor, signal generator, computing machine and oscillograph.
The vibration isolation table for placing sheet metal to be checked is equipped with at described three-dimensional precise motion, described two-dimensional annular phased array transducer is positioned at directly over sheet metal to be checked, and fixed by one end of U-shaped support, the other end of U-shaped support is fixed on an edge of vibration isolation table; This edge is also provided with ultrasonic sensor simultaneously, the output terminal of described ultrasonic sensor is connected to oscillographic signal input part, oscillographic signal output part is connected with the input end of computing machine, the output terminal of computing machine is connected with the input end of signal generator, and the output terminal of signal generator is connected with two-dimensional annular phased array transducer.
The beneficial effects of the utility model are: the utility model structure is simple, adopt vibration isolation table can effectively avoid shielding extraneous vibration on measure the impact that brings, simultaneously two-dimensional annular phased array transducer and ultrasonic sensor the signal characteristic change that effectively can detect fine crack and bring is set, thus realize fast, the detection of low cost.
Accompanying drawing explanation
Fig. 1 is the utility model structural representation.
Embodiment
Below in conjunction with accompanying drawing, the utility model is further described.
As shown in Figure 1, the present embodiment is made up of three-dimensional precise motion 1, support 2, two-dimensional annular phased array transducer 3, vibration isolation table 4, ultrasonic sensor 5, signal generator 6, computing machine 7 and oscillograph 8.
Being equipped with the vibration isolation table for placing sheet metal to be checked at three-dimensional precise motion, because defect is inherently very tiny, so extraneous interference must be shielded, preventing effective signal intensity to be fallen into oblivion.Two-dimensional annular phased array transducer is positioned at directly over sheet metal to be checked, and is fixed by one end of U-shaped support, and the other end of U-shaped support is fixed on an edge of vibration isolation table; This edge has also been horizontally disposed with ultrasonic sensor simultaneously, the output terminal of ultrasonic sensor is connected to oscillographic signal input part, oscillographic signal output part is connected with the input end of computing machine, the output terminal of computing machine is connected with the input end of signal generator, and the output terminal of signal generator is connected with two-dimensional annular phased array transducer.
The course of work of the present embodiment: utilize signal generator to produce high-frequency signal, this signal is input to two-dimensional annular phased array transducer 3 and produces focus supersonic excitation, aluminium sheet to be measured is driven by three-dimensional precise motion 1, make ultrasonic sensor can find suitable acceptance point, receive the high frequency harmonic signals after interacting with fine crack in aluminium sheet by ultrasonic sensor 5 again, finally send computing machine 7 to by oscillograph 8 collection.Carry out filtering first-harmonic to the signal collected, leave the characteristic signal produced by crackle, and characteristic signal is carried out time domain reversion, anti-characteristic signal when the receiving sensor on identical point applies also emulates.The last cloud atlas observing test specimen in abaqus software post-processing module, the position of crackle just can be determined in the position focused on by designature.
Claims (1)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520844556.9U CN205157493U (en) | 2015-10-28 | 2015-10-28 | Sheet metal crazing line ultrasonic testing positioner |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520844556.9U CN205157493U (en) | 2015-10-28 | 2015-10-28 | Sheet metal crazing line ultrasonic testing positioner |
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| Publication Number | Publication Date |
|---|---|
| CN205157493U true CN205157493U (en) | 2016-04-13 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201520844556.9U Expired - Fee Related CN205157493U (en) | 2015-10-28 | 2015-10-28 | Sheet metal crazing line ultrasonic testing positioner |
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| CN (1) | CN205157493U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105954356A (en) * | 2016-05-03 | 2016-09-21 | 中国计量大学 | Finite amplitude technology-based metal block closed crack detecting and positioning method |
| CN106018551A (en) * | 2016-05-03 | 2016-10-12 | 中国计量大学 | Aluminum pipe defect detecting and positioning method based on multi-channel time reversal method |
| CN106124623A (en) * | 2016-06-20 | 2016-11-16 | 哈尔滨理工大学 | Sheet metal micro-crack identification and alignment system and detection method based on this system |
| CN113855071A (en) * | 2021-09-28 | 2021-12-31 | 核工业总医院 | Improved ultrasonic diagnostic apparatus and method of displaying ultrasonic image |
-
2015
- 2015-10-28 CN CN201520844556.9U patent/CN205157493U/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105954356A (en) * | 2016-05-03 | 2016-09-21 | 中国计量大学 | Finite amplitude technology-based metal block closed crack detecting and positioning method |
| CN106018551A (en) * | 2016-05-03 | 2016-10-12 | 中国计量大学 | Aluminum pipe defect detecting and positioning method based on multi-channel time reversal method |
| CN105954356B (en) * | 2016-05-03 | 2018-11-16 | 中国计量大学 | A kind of metal block closure crack detection localization method based on limited amplitude method |
| CN106124623A (en) * | 2016-06-20 | 2016-11-16 | 哈尔滨理工大学 | Sheet metal micro-crack identification and alignment system and detection method based on this system |
| CN113855071A (en) * | 2021-09-28 | 2021-12-31 | 核工业总医院 | Improved ultrasonic diagnostic apparatus and method of displaying ultrasonic image |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20160413 Termination date: 20171028 |
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| CF01 | Termination of patent right due to non-payment of annual fee |