CN204758470U - Laser ultrasonic testing device - Google Patents
Laser ultrasonic testing device Download PDFInfo
- Publication number
- CN204758470U CN204758470U CN201520366887.6U CN201520366887U CN204758470U CN 204758470 U CN204758470 U CN 204758470U CN 201520366887 U CN201520366887 U CN 201520366887U CN 204758470 U CN204758470 U CN 204758470U
- Authority
- CN
- China
- Prior art keywords
- photodiode
- light beam
- laser instrument
- laser
- model
- 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.)
- Active
Links
- 238000001514 detection method Methods 0.000 claims description 13
- 238000002604 ultrasonography Methods 0.000 claims description 9
- 230000005284 excitation Effects 0.000 claims description 6
- 230000003321 amplification Effects 0.000 claims description 3
- 238000003199 nucleic acid amplification method Methods 0.000 claims description 3
- 238000001959 radiotherapy Methods 0.000 claims description 3
- 230000003760 hair shine Effects 0.000 abstract 4
- 230000005855 radiation Effects 0.000 abstract 1
- 238000009659 non-destructive testing Methods 0.000 description 4
- 238000005516 engineering process Methods 0.000 description 3
- 230000000694 effects Effects 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 230000003287 optical effect Effects 0.000 description 2
- 238000006243 chemical reaction Methods 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 238000012544 monitoring process Methods 0.000 description 1
- 230000005693 optoelectronics Effects 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
Abstract
The utility model relates to a laser ultrasonic testing device, the device includes nd: the YAG laser instrument, by nd: the light beam that the YAG laser instrument sent shines the spectroscope, and wherein, all the way the light beam shines after the focusing of convex lens L2 by on the work piece that detects, and simultaneously, he -Ne laser instrument radiation light beam is to by on the work piece that detects, and the reverberation that is detected the work piece is received to confocal fabry - perot interferometer, and the folded light beam is on convex lens L3 shines photodiode 2, and the transport was for the oscillograph after the signal of telecommunication that photodiode 2 changed out passed through preamplifier, another way light beam shines photodiode 1 behind convex lens L1 on, the signal of telecommunication that photodiode 1 changed out is carried for the oscillograph. The utility model discloses utilize pulsed laser to arouse the ultrasonic wave, detect the ultrasonic wave with continuous laser, reach and carry out the purpose that detects to the sample.
Description
Technical field
The utility model belongs to electric system technical field of nondestructive testing, particularly a kind of laser ultrasonic detection device.
Background technology
In recent years, along with improving constantly of industrial automatization, people are to Dynamic Non-Destruction Measurement, and especially the demand of Non-contact nondestructive detection technique more and more chases after and cuts.Laser ultrasonic detection technology utilizes laser pulses irradiate sample surfaces, inspires ultrasound wave, and utilize optical means to detect ultrasound wave, thus realize a kind of method of sample being carried out to Non-Destructive Testing.At present, Laser Ultrasonic Technique has become a kind of important technology in field of non destructive testing and means.Because laser-ultrasound has noncontact, Time and place resolution is high, the advantage such as particular/special requirement, real-time online is not had to the shape and size of sample, has been widely used in the fields such as industrial nondestructive testing, the sign of material and the acoustic propagation law study of compound substance and anisotropic material.
Summary of the invention
The purpose of this utility model is for the deficiencies in the prior art, and proposes a kind of laser ultrasonic detection device.
The utility model solves its technical matters and takes following technical scheme to realize:
A kind of laser ultrasonic detection device, this device comprises Nd:YAG laser instrument, be used for excitation ultrasound pulse, the light beam irradiation sent by Nd:YAG laser instrument is to spectroscope, light beam is divided into two-way by spectroscope, one road light beam is irradiated on detected workpiece after convex lens L2 focuses, simultaneously, He-Ne laser instrument radiotherapy beam is on detected workpiece, confocal Fabry-Perot interferometer receives the reflected light of detected workpiece, light beam through confocal Fabry-Perot interferometer is irradiated on photodiode 2 after convex lens L3 focuses, the electric signal changed out through photodiode 2 is by flowing to oscillograph after the amplification of prime amplifier, another road light beam planoconvex lens L1 that spectroscope separates is irradiated on photodiode 1 after focusing, and the electric signal changed out through photodiode 1 flows to oscillograph.
And the operation wavelength of described Nd:YAG laser instrument is 1064nm, monopulse power continuously adjustabe in 890mJ, and pulse width is 5ns.
And the power of described He-Ne laser instrument is 5mW.
And the model of described photodiode 1, photodiode 2 is UV-102BK, described oscillographic model YB4361, bandwidth 100M.
Advantage of the present utility model and good effect are:
The utility model devises a kind of laser ultrasonic detection device, this device is made up of ND:YAG laser generator, He-Ne laser instrument, confocal Fabry-Perot interferometer, photodiode, spectroscope, lens, prime amplifier, oscillograph, utilize pulse laser excitation ultrasound ripple, with continuous laser, ultrasound wave is detected, the reflected light of detection laser carries ultrasonic vibration information, Fabry-Perot interferometer is utilized to carry out demodulation, again ultrasonic signal is processed, just can reach the object that sample is detected.
Accompanying drawing explanation
Fig. 1 is structural representation of the present utility model.
Embodiment
Implement to be further described to the utility model below in conjunction with accompanying drawing, following examples are descriptive, are not determinate, can not limit protection domain of the present utility model with this.
A kind of laser ultrasonic detection device, as shown in Figure 1, this device comprises Nd:YAG laser instrument, be used for excitation ultrasound pulse, the light beam irradiation sent by Nd:YAG laser instrument is to spectroscope, light beam is divided into two-way by spectroscope, one road light beam is irradiated on detected workpiece after the convex lens L2 on same optical axis focuses, it is ultrasonic to be used for excitation laser, simultaneously, He-Ne laser instrument radiotherapy beam is on detected workpiece, confocal Fabry-Perot interferometer (CFPI) receives the reflected light of detected workpiece, and ultrasonic signal demodulation out, light beam through confocal Fabry-Perot interferometer (CFPI) is irradiated on photodiode 2 after convex lens L3 focuses, the electric signal changed out through photodiode 2 is by flowing to oscillograph after the amplification of prime amplifier, another road light beam planoconvex lens L1 that spectroscope separates is irradiated on photodiode 1 after focusing, and the electric signal changed out through photodiode 1 flows to oscillograph, provides synchronizing signal to oscillograph.
In concrete enforcement of the present utility model, described Nd:YAG laser instrument is used for excitation ultrasound pulse, and its operation wavelength is 1064nm, monopulse power continuously adjustabe in 890mJ, and pulse width is 5ns.
In concrete enforcement of the present utility model, the power of described He-Ne laser instrument is 5mW, is used for detecting the ultrasonic vibration at sample surfaces place to be measured.
In concrete enforcement of the present utility model, the model of described photodiode 1, photodiode 2 is UV-102BK, and opto-electronic conversion is carried out in its effect, described oscillographic model YB4361, bandwidth 100M, is used for monitoring the change of ultrasonic signal.
Claims (4)
1. a laser ultrasonic detection device, it is characterized in that: this device comprises Nd:YAG laser instrument, be used for excitation ultrasound pulse, the light beam irradiation sent by Nd:YAG laser instrument is to spectroscope, light beam is divided into two-way by spectroscope, one road light beam is irradiated on detected workpiece after convex lens L2 focuses, simultaneously, He-Ne laser instrument radiotherapy beam is on detected workpiece, confocal Fabry-Perot interferometer receives the reflected light of detected workpiece, light beam through confocal Fabry-Perot interferometer is irradiated on photodiode 2 after convex lens L3 focuses, the electric signal changed out through photodiode 2 is by flowing to oscillograph after the amplification of prime amplifier, another road light beam planoconvex lens L1 that spectroscope separates is irradiated on photodiode 1 after focusing, and the electric signal changed out through photodiode 1 flows to oscillograph.
2. laser ultrasonic detection device according to claim 1, is characterized in that: the operation wavelength of described Nd:YAG laser instrument is 1064nm, monopulse power continuously adjustabe in 890mJ, and pulse width is 5ns.
3. laser ultrasonic detection device according to claim 1, is characterized in that: the power of described He-Ne laser instrument is 5mW.
4. laser ultrasonic detection device according to claim 1, is characterized in that: the model of described photodiode 1, photodiode 2 is UV-102BK, described oscillographic model YB4361, bandwidth 100M.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520366887.6U CN204758470U (en) | 2015-06-01 | 2015-06-01 | Laser ultrasonic testing device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520366887.6U CN204758470U (en) | 2015-06-01 | 2015-06-01 | Laser ultrasonic testing device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204758470U true CN204758470U (en) | 2015-11-11 |
Family
ID=54473166
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520366887.6U Active CN204758470U (en) | 2015-06-01 | 2015-06-01 | Laser ultrasonic testing device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204758470U (en) |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107356674A (en) * | 2017-08-17 | 2017-11-17 | 福建省永正工程质量检测有限公司 | A kind of construction steel structure supersonic detection device |
| CN107560713A (en) * | 2017-10-27 | 2018-01-09 | 罗沛棋 | Vibration signal extraction element based on gradual change transmitance filter |
| CN109799192A (en) * | 2019-01-18 | 2019-05-24 | 广东工业大学 | A kind of non-contact laser ultrasonic nondestructive testing and method for arbitrary surface |
| CN113125061A (en) * | 2019-12-31 | 2021-07-16 | 哈尔滨工业大学 | Contact stress measuring device of large-scale high-speed rotation equipment based on laser ultrasound |
| CN113125060A (en) * | 2019-12-31 | 2021-07-16 | 哈尔滨工业大学 | Large-scale high-speed rotation equipment joint surface contact stress measuring method based on wave energy dissipation principle |
| CN114018826A (en) * | 2021-09-26 | 2022-02-08 | 宝宇(武汉)激光技术有限公司 | Laser ultrasonic nondestructive testing equipment and method by light deflection method |
| CN114088810A (en) * | 2021-11-16 | 2022-02-25 | 宝宇(武汉)激光技术有限公司 | Interference laser ultrasonic nondestructive testing method and system |
-
2015
- 2015-06-01 CN CN201520366887.6U patent/CN204758470U/en active Active
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107356674A (en) * | 2017-08-17 | 2017-11-17 | 福建省永正工程质量检测有限公司 | A kind of construction steel structure supersonic detection device |
| CN107560713A (en) * | 2017-10-27 | 2018-01-09 | 罗沛棋 | Vibration signal extraction element based on gradual change transmitance filter |
| CN109799192A (en) * | 2019-01-18 | 2019-05-24 | 广东工业大学 | A kind of non-contact laser ultrasonic nondestructive testing and method for arbitrary surface |
| CN113125061A (en) * | 2019-12-31 | 2021-07-16 | 哈尔滨工业大学 | Contact stress measuring device of large-scale high-speed rotation equipment based on laser ultrasound |
| CN113125060A (en) * | 2019-12-31 | 2021-07-16 | 哈尔滨工业大学 | Large-scale high-speed rotation equipment joint surface contact stress measuring method based on wave energy dissipation principle |
| CN114018826A (en) * | 2021-09-26 | 2022-02-08 | 宝宇(武汉)激光技术有限公司 | Laser ultrasonic nondestructive testing equipment and method by light deflection method |
| CN114018826B (en) * | 2021-09-26 | 2023-01-03 | 宝宇(武汉)激光技术有限公司 | Laser ultrasonic nondestructive testing equipment and method by light deflection method |
| CN114088810A (en) * | 2021-11-16 | 2022-02-25 | 宝宇(武汉)激光技术有限公司 | Interference laser ultrasonic nondestructive testing method and system |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN204758470U (en) | Laser ultrasonic testing device | |
| CN103175629B (en) | Method for fast measuring sea water temperature | |
| CN104237381A (en) | Steel rail flaw-detection method based on laser ultrasonic and high-speed photography image fusion | |
| CN102608210B (en) | Method for detecting flaw of angle steel member by using ultrasonic guided waves | |
| CN102866144B (en) | Nondestructive testing method for fatigue crack on solid material surface | |
| CN103808802A (en) | Full-optical laser ultrasonic measuring method for internal defect of material | |
| CN105092705A (en) | Multi-mode signal detection method and multi-mode signal detection system for rail defects | |
| CN107782715A (en) | Using the method for multi-pulse laser induced plasma spectral analysis apparatus detection steel samples composition | |
| CN110763764A (en) | Novel ultrasonic detection system for metal internal defects | |
| CN105021627A (en) | High-sensitivity fast on-line detection method of optical thin film and element surface laser-induced damage | |
| CN104142316A (en) | Pre-ablation and reheating combined triple-pulse LIBS (laser-induced breakdown spectroscopy) detection system | |
| CN112067696A (en) | System for detecting surface defects of pipeline based on laser ultrasonic | |
| CN211179651U (en) | Novel ultrasonic detection system for metal internal defects | |
| CN105301097A (en) | Laser ultrasonic excitation and detection system as well as detection method using same | |
| CN202339317U (en) | Laser ultrasonic detection system based on light deflection technique | |
| CN204330141U (en) | A kind of apparatus for measuring high power ultra-short laser pulse contrast | |
| CN110687204A (en) | Laser ultrasonic detection method and device | |
| CN211627451U (en) | Laser ultrasonic detection device | |
| CN112098520A (en) | Detection system and method for detecting internal defect shape of material based on laser ultrasonic | |
| CN116124347A (en) | Device and method for detecting residual stress on sample surface by using laser-based ultrasonic excitation surface wave | |
| CN107806933B (en) | Device and method for measuring laser-induced shock wave velocity of optical material | |
| CN104990521A (en) | Non-contact type composite material thickness measurement device and method | |
| Zhao et al. | Applications of laser ultrasonic technique on nondestructive testing and evaluation of materials | |
| Tenner et al. | Remote optical detection of the fusion state in laser deep penetration welding | |
| CN110763766B (en) | Laser ultrasonic phase-locking detection system and method for turbine blade surface microdefects |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |