CN206096037U - Ultrasonic testing device of metal tubular product defect based on time reversal and lamb wave - Google Patents
Ultrasonic testing device of metal tubular product defect based on time reversal and lamb wave Download PDFInfo
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- CN206096037U CN206096037U CN201620876157.5U CN201620876157U CN206096037U CN 206096037 U CN206096037 U CN 206096037U CN 201620876157 U CN201620876157 U CN 201620876157U CN 206096037 U CN206096037 U CN 206096037U
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- lamb wave
- time reversal
- metal pipe
- pipe material
- supersonic
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- Investigating Or Analyzing Materials By The Use Of Ultrasonic Waves (AREA)
Abstract
Ultrasonic testing device of metal tubular product defect based on time reversal and lamb wave relates to metal tubular product defect detecting field. It has solved traditional lamb wave metal tubular product defect detecting device when carrying out defect detecting to metal tubular product, has the frequency dispersion phenomenon and makes to the not high problem of small defect identification ability in the metal tubular product. The device comprises computer system, lamb wave supersound signal generator, the super acoustic emission transducer array of lamb wave, metal tubular product, lamb wave supersound receiving transducer, digital oscilloscope, time reversal unit. The utility model is suitable for an ultrasonic testing of metal tubular product defect.
Description
Technical field
This utility model belongs to metal pipe material defects detection field, and in particular to based on time reversal and the metal of Lamb wave
The supersonic detection device of tubing defect.
Background technology
When Lamb wave is propagated in tubing, the various defects inside tubing can cause stress concentration, these defect peripheral regions
Domain can all cause scattering and the energy absorption of Lamb wave signal.Traditional Lamb wave metal pipe material defect detecting device is namely based on
This phenomenon, is detected to metal pipe material defect.However, these conventional detection devices do not consider that Lamb wave is passed in tubing
Broadcast patten transformation present in process and dispersion phenomenon so that can not possibly at large disclose the letter included in the signal of acquisition
Breath, greatly limit the extensive application of traditional Lamb wave metal pipe material defect detecting device.
The time match filtering of the adapted local cosine transform of pulsed sound and Coherent Targets signal can be realized time reversal, it is not required to
The property of medium and transducer array is known in advance, so that it may realize the distortion that sound wave adaptive correction multipath causes, and in fact
The focusing of existing sound wave, and then improve the signal to noise ratio of signal.
Metal pipe material is widely applied in national defence and civilian basic activity, once however, in tubing existing defects and
Do not detected in time, huge economic losses will be caused, or even extremely serious impact is brought to society and ecological environment.Cause
This, the supersonic detection device of development of metallic tubing defect is very necessary.
The content of the invention
This utility model is carrying out defect to metal pipe material in order to solve traditional Lamb wave metal pipe material defect detecting device
During detection, there is dispersion phenomenon and cause not high to tiny flaw identification ability in metal pipe material, there is provided one kind is based on
The supersonic detection device of the metal pipe material defect of time reversal and Lamb wave.
Based on the supersonic detection device of the metal pipe material defect of time reversal and Lamb wave, it includes computer system, orchid
Nurse ripple supersonic signal generator, Lamb wave ultrasound emission transducer array, metal pipe material, Lamb wave ultrasonic reception transducer, number
Word oscillograph, unit time reversal.
The signal input part of the signal output part of described computer system and described Lamb wave supersonic signal generator
Electrical connection, the signal output part and described Lamb wave ultrasound emission transducer array of described Lamb wave supersonic signal generator
The signal input part electrical connection of row, described Lamb wave ultrasound emission transducer array are pasted onto described gold by adhesive glue
The outer surface of the lower end of category tubing, the outer surface of the upper end of described metal pipe material are surpassed by the Lamb wave bondd described in glue
Sound reception transducer, the signal output part of described Lamb wave ultrasonic reception transducer are defeated with the signal of described digital oscilloscope
Enter end electrical connection, the signal input part of the first signal output part of described digital oscilloscope and described unit time reversal
Electrical connection, the signal output part of described unit time reversal are electric with the first signal input part of described computer system
Connection, the described secondary signal outfan of digital oscilloscope are electrically connected with the secondary signal input of described computer system
Connect.
Preferably：The sample frequency of digital oscilloscope is not less than 2.5MHz.
Preferably：The tranmitting frequency of Lamb wave supersonic signal generator is not less than 40MHz.
Preferably：The ultrasound emission transducer and Lamb wave ultrasonic reception transducer of Lamb wave ultrasound emission transducer array
The mid frequency of ultrasonic reception transducer be 260kHz.
This utility model is had the effect that compared with prior art：
Due to time reversal can originally in tubing due to sonic propagation multi-pathway effect and broadening Lamb wave letter
Number become to assemble sound wave, and it need not understand measured medium structural property, sensor array placement etc. in advance, it is possible to automatically
Inhomogeneities between correction measured target and sensing transducer and produce phase distortion, the difference of time delay, therefore improve letter
Make an uproar ratio.Time reversal and Lamb wave are effectively combined by this detection means so that Lamb wave is propagated with extraordinary in tubing
Self-focusing performance, therefore, the device is greatly improved to the identification ability of tiny flaw in metal pipe material.
Description of the drawings：
Accompanying drawing 1 is the ultrasound detection of the metal pipe material defect based on time reversal and Lamb wave described in this utility model
The composition frame chart of device.
Specific embodiment
This utility model is elaborated preferred embodiment below according to accompanying drawing 1.
Specific embodiment：Referring to accompanying drawing 1, the ultrasound detection dress based on the metal pipe material defect of time reversal and Lamb wave
Put, it includes computer system 1, Lamb wave supersonic signal generator 2, Lamb wave ultrasound emission transducer array 3, metal pipe material
4th, Lamb wave ultrasonic reception transducer 5, digital oscilloscope 6, unit time reversal 7.
The signal input of the signal output part of described computer system 1 and described Lamb wave supersonic signal generator 2
End electrical connection, the signal output part and described Lamb wave ultrasound emission transducing of described Lamb wave supersonic signal generator 2
The signal input part electrical connection of device array 3, described Lamb wave ultrasound emission transducer array 3 are pasted onto institute by adhesive glue
The outer surface of the lower end of the metal pipe material 4 stated, the outer surface of the upper end of described metal pipe material 4 is by boning described in glue
Lamb wave ultrasonic reception transducer 5, the signal output part of described Lamb wave ultrasonic reception transducer 5 and described digital oscillography
The signal input part electrical connection of device 6, first signal output part and described unit time reversal of described digital oscilloscope 6
7 signal input part electrical connection, the of the signal output part of described unit time reversal 7 and described computer system 1
One signal input part is electrically connected, and the of the secondary signal outfan of described digital oscilloscope 6 and described computer system 1
Binary signal input is electrically connected.
The sample frequency of described digital oscilloscope 6 is not less than 2.5MHz.
The tranmitting frequency of described Lamb wave supersonic signal generator 2 is not less than 40MHz.
The ultrasound emission transducer and described Lamb wave ultrasonic reception of described Lamb wave ultrasound emission transducer array 3
The mid frequency of the ultrasonic reception transducer of transducer 5 is 260kHz.
The course of work is as follows：
（1）Computer system 1 sends signal to Lamb wave supersonic signal generator 2, by Lamb wave supersonic signal generator 2
Lamb wave ultrasonic pulsative signal of the mid frequency for 260kHz is produced, and while is loaded into Lamb wave ultrasound emission transducer respectively
On the ultrasound emission transducer of array 3；
（2）The ultrasound emission transducer of Lamb wave ultrasound emission transducer array 3 produces Lamb wave, and Jing metal pipe materials 4
Travel to Lamb wave ultrasonic reception transducer 5；
（3）The Lamb wave for receiving is converted to the signal of telecommunication by Lamb wave ultrasonic reception transducer 5, and is sent to digital oscillography
Device 6 carries out signals collecting and storage, is then sent to unit time reversal 7 by the first signal output part of digital oscilloscope 6
Carry out time reversal, then send computer system 2 to by the first signal input part of computer system 2 being normalized place
Reason；
（4）Signal after normalized is sent to Lamb wave supersonic signal generator 2 by computer system 2 again, is produced
Raw mid frequency is 260kHz Lamb wave ultrasonic pulsative signals, while being loaded into Lamb wave ultrasound emission transducer array 3 respectively
Ultrasound emission transducer on, produce Lamb wave, and Jing metal pipe materials 4 travel to Lamb wave ultrasonic reception transducer 5；
（5）The signal that Lamb wave ultrasonic reception transducer 5 is received is the focus signal after time reversal, and Jing numerals are shown
After ripple device 6 is gathered and stored, the second of computer system 2 is transmitted directly to by the secondary signal outfan of digital oscilloscope 6
Signal input part；
（6）2 pairs of focus signals of computer system carry out time-frequency combination analysis, if occurring in that the triple-frequency harmonics of 780kHz,
There is metal pipe material 4 is can determine whether then in tiny flaw, otherwise, not existing defects.
Present embodiment is the exemplary illustration to this patent, does not limit its protection domain, people in the art
Member can also be locally changed to which, as long as no the spirit beyond this patent, all in the protection domain of this patent.
Claims (5)
1. based on time reversal and Lamb wave metal pipe material defect supersonic detection device, it is characterised in that it include calculate
Machine system（1）, Lamb wave supersonic signal generator（2）, Lamb wave ultrasound emission transducer array（3）, metal pipe material（4）, it is blue
Nurse ripple ultrasonic reception transducer（5）, digital oscilloscope（6）, unit time reversal（7）.
2. the supersonic detection device of the metal pipe material defect based on time reversal and Lamb wave according to claim 1, its
It is characterised by, described computer system（1）Signal output part and described Lamb wave supersonic signal generator（2）Signal
Input is electrically connected, described Lamb wave supersonic signal generator（2）Signal output part and described Lamb wave ultrasound send out
Penetrate transducer array（3）Signal input part electrical connection, described Lamb wave ultrasound emission transducer array（3）By bonding
Glue is in described metal pipe material（4）Lower end outer surface, described metal pipe material（4）Upper end outer surface by viscous
Gum deposit pastes described Lamb wave ultrasonic reception transducer（5）, described Lamb wave ultrasonic reception transducer（5）Signal output
End and described digital oscilloscope（6）Signal input part electrical connection, described digital oscilloscope（6）The first signal output
End and described unit time reversal（7）Signal input part electrical connection, described unit time reversal（7）Signal output
End and described computer system（1）The first signal input part electrical connection, described digital oscilloscope（6）Secondary signal
Outfan and described computer system（1）Secondary signal input electrical connection.
3. the supersonic detection device of the metal pipe material defect based on time reversal and Lamb wave according to claim 1 and 2,
Characterized in that, described digital oscilloscope（6）Sample frequency be not less than 2.5MHz.
4. the supersonic detection device of the metal pipe material defect based on time reversal and Lamb wave according to claim 1 and 2,
Characterized in that, described Lamb wave supersonic signal generator（2）Tranmitting frequency be not less than 40MHz.
5. the supersonic detection device of the metal pipe material defect based on time reversal and Lamb wave according to claim 1 and 2,
Characterized in that, described Lamb wave ultrasound emission transducer array（3）Ultrasound emission transducer and described Lamb wave it is super
Sound reception transducer（5）The mid frequency of ultrasonic reception transducer be 260kHz.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620876157.5U CN206096037U (en) | 2016-08-15 | 2016-08-15 | Ultrasonic testing device of metal tubular product defect based on time reversal and lamb wave |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620876157.5U CN206096037U (en) | 2016-08-15 | 2016-08-15 | Ultrasonic testing device of metal tubular product defect based on time reversal and lamb wave |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206096037U true CN206096037U (en) | 2017-04-12 |
Family
ID=58468235
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620876157.5U Expired - Fee Related CN206096037U (en) | 2016-08-15 | 2016-08-15 | Ultrasonic testing device of metal tubular product defect based on time reversal and lamb wave |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206096037U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107045017A (en) * | 2017-04-25 | 2017-08-15 | 南京信息工程大学 | Crack In Thin Plate depth analysis method based on ultrasonic Lamb waves and time-reversal theory |
| CN111855802A (en) * | 2020-07-28 | 2020-10-30 | 武汉大学 | Defect visualization imaging method for eliminating laser ultrasonic traveling wave |
-
2016
- 2016-08-15 CN CN201620876157.5U patent/CN206096037U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107045017A (en) * | 2017-04-25 | 2017-08-15 | 南京信息工程大学 | Crack In Thin Plate depth analysis method based on ultrasonic Lamb waves and time-reversal theory |
| CN107045017B (en) * | 2017-04-25 | 2019-07-02 | 南京信息工程大学 | Crack In Thin Plate depth analysis method based on ultrasonic Lamb waves and time-reversal theory |
| CN111855802A (en) * | 2020-07-28 | 2020-10-30 | 武汉大学 | Defect visualization imaging method for eliminating laser ultrasonic traveling wave |
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| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20170412 Termination date: 20170815 |