CN104990984B - A kind of device and method for improving magnetic striction wave guide detection sensitivity - Google Patents
A kind of device and method for improving magnetic striction wave guide detection sensitivity Download PDFInfo
- Publication number
- CN104990984B CN104990984B CN201510448223.9A CN201510448223A CN104990984B CN 104990984 B CN104990984 B CN 104990984B CN 201510448223 A CN201510448223 A CN 201510448223A CN 104990984 B CN104990984 B CN 104990984B
- Authority
- CN
- China
- Prior art keywords
- signal
- detection
- sensor
- module
- enhancing element
- 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.)
- Expired - Fee Related
Links
Landscapes
- Investigating Or Analyzing Materials By The Use Of Ultrasonic Waves (AREA)
Abstract
The invention discloses a kind of device for improving magnetic striction wave guide detection sensitivity, and the method that magnetic striction wave guide detection sensitivity is improved using the device, center processor control signal generator produces pumping signal, by power amplifier input stimulus sensor, produce supersonic guide-wave in area excitation to be detected and propagate vertically；Reflection through signal enhancing element, input reception sensor, is input to A/D converter through signal preprocessor, is converted into data signal input center processor after supersonic guide-wave superposition enhancing；Center processor draws position of the defect on region to be detected by the analysis to data signal.The present invention in the detection means of traditional magnetic striction wave guide by introducing signal enhancing element, realize that defect multiecho signal amplitude strengthens, reach the purpose for improving Guided waves sensitivity, while be not required to carry out existing apparatus complicated transformation, you can the defects of realizing non-blind area is detected.
Description
Technical field
The invention belongs to field of non destructive testing, more particularly, to a kind of raising magnetic striction wave guide detection sensitivity
Device and method.
Background technology
In industries such as oil, chemical industry, the energy, pipe and pipeline are widely applied, and occur that burn into is perforated after long-term use of
Or the failure mode such as wall thickness reduction.To avoid the generation of accident, it is necessary to carry out regular Non-Destructive Testing to industrial pipeline.Supersonic guide-wave
Detection technique has the advantages of one section of region quick detection can be achieved in single-point-excitation, is widely used in the field.
The patent of invention of Application No. 96193606.1 discloses a kind of pipeline and pipe using magneto strictive sensor
Non-destructive method (publication date is on May 27th, 1998), mainly describe a kind of for examining ferromagnetic pipeline or other circles
The method and apparatus of pole-shell structure, wherein using magnetostrictive effect come the defects of detecting structure.However, actually detected
In, because operating mode is complicated, supersonic guide-wave is decayed greatly in communication process, reduces detection sensitivity.Application No.
200810013047.6 patent of invention disclose a kind of ultrasonic guided wave combined type nondestructive and device (publication date be
On March 10th, 2010), electromagnetic mode is respectively adopted and piezo electrics realize the excitation and reception of supersonic guide-wave, has in pipeline and declines
Under conditions of subtracting effect, reach farther distance and more highly sensitive defects detection purpose.
However, existing technology only optimizes from excitation or reception mode to guided wave detection technology, according to defect once
Echo-signal realizes defects detection, and now, decay can not only reduce the sensitivity of defects detection, and in echo letter of defect
In the case that number amplitude unobvious or defect are in check frequency, easily there is defect missing inspection.
The content of the invention
For the disadvantages described above or Improvement requirement of prior art, the invention provides one kind to improve magnetic striction wave guide detection
The device and method of sensitivity, its object is to introduce signal enhancing element in being detected in magnetic striction wave guide, lacked by strengthening
Multiecho amplitude is fallen into, improves detection sensitivity, while eliminate the defects of occurring in detection process because of check frequency missing inspection problem.
To achieve the above object, according to one aspect of the present invention, there is provided one kind improves magnetic striction wave guide detection spirit
The device of sensitivity, it is characterised in that including signal enhancing element, on the one hand for reflectance ultrasound guided wave signals so that ultrasound is led
Strengthen after ripple Signal averaging, be on the other hand used to absorb the supersonic guide-wave propagated outside to inside from detection zone, reduce interference signal
Influence to detection.
Preferably, it is pre- also to include stimulus sensor, reception sensor, signal generator, power amplifier, signal for the device
Processor, A/D converter and center processor；
The signal generator is used to produce pumping signal, and the pumping signal is inputted described sharp by the power amplifier
Sensor is encouraged, the excitation generation ultrasonic guided wave signals in detection object；
The reception sensor is used to receive ultrasonic guided wave signals and be converted into detection signal, and the detection signal is through the letter
Number preprocessor is sent to the A/D converter, and is converted into data signal；
The center processor is used to control the signal generator to produce pumping signal, and receives the A/D conversions
Data signal in device is used to analyze and process；
The signal enhancing element is used for the ultrasonic guided wave signals reflected in detection zone so that the reception sensor connects
Strengthen after the ultrasonic guided wave signals superposition received, while for absorbing the supersonic guide-wave propagated outside to inside from detection zone, reduce
Influence of the interference signal that reception sensor receives to detection.
It is another aspect of this invention to provide that additionally provide a kind of sensitive using said apparatus raising magnetic striction wave guide detection
The method of degree, it is characterised in that utilize signal enhancing element one side reflectance ultrasound guided wave signals so that ultrasonic guided wave signals are folded
Strengthen after adding, on the other hand absorb the supersonic guide-wave propagated outside to inside from detection zone, reduce influence of the interference signal to detection.
Preferably, this method comprises the following steps：
(1) center processor control signal generator produces pumping signal, by power amplifier input stimulus sensor,
Excitation produces supersonic guide-wave in detection object, and along the Propagation of the detection object；
(2) when supersonic guide-wave runs into the defects of detection zone, echo-signal is produced, the echo-signal is through signal enhancing member
The reflection of part, it is superimposed and amplitude enhancing at sensor receiving；
(3) the enhanced echo-signal of amplitude is converted to detection signal by receiving converter, then defeated through signal preprocessor
Enter the A/D converter, and be converted into data signal；
(4) after center processor receives data signal, the position of defect is obtained by Treatment Analysis.
Preferably, before step (1), two signal enhancing elements are first arranged to the both ends in region to be detected, encouraged
Sensor and reception sensor are arranged between two signal enhancing elements, and signal generator passes through power amplifier and passed with excitation
Sensor is connected, and receives sensor and is connected by signal preprocessor with A/D converter, center processor connects signal respectively
The input of device and the output end of A/D converter.
Preferably, stimulus sensor is disposed adjacent with one of signal enhancing element.
It is another aspect of this invention to provide that additionally provide a kind of signal enhancing element, it is characterised in that including internal layer and outside
Shell；
The internal layer includes reflecting module, and the shell is by internal layer from radially fixed in the outer surface of detection object so that
Reflecting module applies pressure to detection object, makes detection object produce reversible deformation, is led for reflecting by the ultrasound at the position
Ripple.
Preferably, the detection object is the internal diameter ratio institute of shaft-like or tubulose, the attenuation module and the reflecting module
State the small 0.1mm~2.0mm of external diameter of detection object.
Preferably, the internal layer also includes the attenuation module that is set up in parallel in the axial direction with reflecting module, for absorb from
The supersonic guide-wave that detection zone is propagated outside to inside.
As it is further preferred that the shape of the internal layer inner surface is identical with the shape of the outer surface of detection object, with
When ensureing fixed, reflecting module and attenuation module can be brought into close contact with detection object.
As it is further preferred that the material of the reflecting module is steel, aluminium or copper, the material of the attenuation module is rubber
Glue, nylon or polytetrafluoroethylene (PTFE).
As it is further preferred that the internal layer also includes dividing plate, respectively positioned at the both ends of internal layer, and attenuation module and
Between reflecting module, for the attenuation module and the reflecting module to be fixed in the axial direction；The thickness of the dividing plate is small
In the thickness of the attenuation module and the reflecting module, not contacted when ensureing fixed with detection object.
By the contemplated above technical scheme of the present invention compared with prior art, will be super by introducing signal enhancing element
Acoustic conductance wave reflection and be superimposed, have the advantages that：
1st, using signal enhancing element in the case where echo-signal unobvious of defect or defect are in check frequency,
Increased by defect multiecho signal amplitude, can not only improve Guided waves sensitivity, while lacking for non-blind area can be realized
Fall into detection；
2nd, the attenuation module in signal enhancing element can increase SATT, reduction passes through signal amplitude, so as to reduce quilt
Influence of other supporting constructions of inspection pipeline to detection signal；
3rd, by changing the installation site of signal enhancing element, can be adjusted on the premise of other detection means are not moved
Detection zone is saved, simplifies testing process；
4th, signal enhancing component structure is simple, without transforming existing magnetic striction wave guide detection means, equipment
Improved cost is low.
Brief description of the drawings
Fig. 1 is the schematic device that the present invention improves magnetic striction wave guide detection sensitivity；
Fig. 2 is the device scheme of installation that magnetic striction wave guide detection sensitivity is improved in embodiment 1
Fig. 3 is the dimensional structure diagram of signal enhancing element in embodiment 2；
Fig. 4 is the device operating diagram that magnetic striction wave guide detection sensitivity is improved in embodiment 3；
Fig. 5 is the oscillogram that detection signal obtained by the device of magnetic striction wave guide detection sensitivity is improved in embodiment 3.
In all of the figs, identical reference is used for representing identical element or structure, wherein：1- signal enhancings member
Part 3- stimulus sensors 4- receives sensor 5- detection object 6- center processor 7- signal generator 8- power amplifications
Device 9- signal preprocessor 10-A/D converter 22- magnetizer 23- excitation coil 24- receiving coil 11- holding screws
12- shell 13- attenuation module 14- dividing plate 15- reflecting module 16- fishbolt 17- translot defects
Embodiment
In order to make the purpose , technical scheme and advantage of the present invention be clearer, it is right below in conjunction with drawings and Examples
The present invention is further elaborated.It should be appreciated that the specific embodiments described herein are merely illustrative of the present invention, and
It is not used in the restriction present invention.As long as in addition, technical characteristic involved in each embodiment of invention described below
Conflict can is not formed each other to be mutually combined.
Fig. 1 be it is a kind of improve magnetic striction wave guide detection sensitivity exemplary device, including signal enhancing element 1, excitation
Sensor 3, receive sensor 4, signal generator 7, power amplifier 8, signal preprocessor 9, A/D converter 10 and center
Processor 6；In practical application, commonly use magnetizer 22 and the composition of receiving coil 24 receives sensor 4, with magnetizer 22 and excitation line
The composition stimulus sensor 3 of circle 23；Or a magnetizer 22 and a coil are only set, it is connected with duplexer with coil, simultaneously
Perform the function of receiving sensor 4 and stimulus sensor 3.Signal enhancing element 1 can only include reflecting module 15, can also be same
When include reflecting module 15 and attenuation module 13.
According to the detection zone of actually detected needs, first setting detection object 5 during installation, two signal enhancing elements
1 is respectively arranged in the both ends of detection zone, and the reflecting module 15 of wherein signal enhancing element 1 is disposed in proximity to the one of detection zone
Side.If the side of detection zone is located at the end of detection object 5, end can be utilized to perform the reflection of signal enhancing element 1
Function, one signal enhancing element 1 only is installed in side of the detection zone away from end.Stimulus sensor 3 abuts signal enhancing
The reflecting module 15 of element 1 is installed on one end of detection zone；Detection zone can be installed on according to operating mode by receiving sensor 4
Middle optional position, the reflecting module 15 that can also abut another signal enhancing element 1 are installed on the another of detection zone
End.Connect the input of signal generator 7 and the output end of A/D converter 10 respectively with center processor 6；Signal generator 7
It is connected by power amplifier 8 with stimulus sensor；Receive sensor 4 and pass through signal preprocessor 9 and the phase of A/D converter 10
Even, the setting up procedure that the present invention improves the device of magnetic striction wave guide detection sensitivity is just completed.
Because in measurement process, rejected region can not be predicted in advance.In traditional magnetic striction wave guide detection means,
The position for usually needing to adjust sensor changes detection zone, and so as to learn the particular location of defect, operation is comparatively laborious.And
In the apparatus of the present, detection zone is determined by the position of signal enhancing element 1, can pass through side signal enhancing element 1
The adjustment of position, or the position of both sides signal enhancing element 1 are adjusted simultaneously, and to change detection zone, operation is fairly simple.
During measurement, the control signal generator 7 of center processor 6 produces pumping signal, passes through the input stimulus of power amplifier 8
Sensor 3, in detection object 5 excitation produce supersonic guide-wave and along the Propagation of detection zone；When supersonic guide-wave is being propagated
In the defects of running into detection object 5 position when, then produce echo-signal, the reflection through signal enhancing element 1, receiving sensor
Enhancing is superimposed at 4；After enhanced guided wave signals are received by reception sensor 4, A/D conversions are connected to through signal preprocessor 9
Device 10, and data signal is converted into, input center processor 6；Center processor 6 is by the analysis to data signal, during generation
Between relation curve with echo amplitude, so as to the distance learnt rejected region with receive sensor 4, further obtain rejected region
Position on region to be detected.
It is another aspect of this invention to provide that additionally providing a kind of signal enhancing element 1 for said apparatus, its feature exists
In, including internal layer and shell 12；
The internal layer includes reflecting module 15, the internal layer by shell 12 from radially fixed in the outer surface of detection object,
Reflecting module 15 is applying pressure so as to produce reversible deformation with the binding site of detection object 5, passes through when being propagated for reflecting
The supersonic guide-wave at the position.
The shape of the inner surface of signal enhancing element 1 is identical with the shape of the outer surface of detection object 5, during ensureing to fix,
Inner surface can be brought into close contact with detection object 5.Such as when detection object 5 is tubulose or is shaft-like, the interior table of signal enhancing element 1
Face is tubulose.
When detection object 5 is shaft-like or tubulose, the internal diameter of the internal layer is smaller 0.1mm than the external diameter of the detection object 5~
2.0mm, can be combined closely when ensureing fixed with detection object 5.
Preferably, the internal layer also includes the attenuation module 13 being set up in parallel in the axial direction with reflecting module 15, for inhaling
Receive the supersonic guide-wave propagated outside to inside from detection zone.
In order to ensure the reflecting effect to detection zone supersonic guide-wave, the material of the reflecting module 15 uses material hard
Metal or alloy, preferably steel, aluminium or copper；And it is to ensure signal enhancing element to the assimilation effect of ultrasonic guided wave signals, institute
It is relevant with supersonic guide-wave absorption coefficient to state the selection of the material of attenuation module 13, preferably rubber, nylon or polytetrafluoroethylene (PTFE).
Preferably, the internal layer also includes dividing plate 14, positioned at the both ends of internal layer, and attenuation module 13 and reflecting module 15
Between, for the attenuation module 13 and the reflecting module 15 to be fixed in the axial direction；The thickness of the dividing plate 14 is less than
The thickness of the attenuation module 13 and the reflecting module 15, not contacted when ensureing fixed with detection object 5, in order to avoid influence super
The reflection and propagation of guided Waves.
For ease of installation, dividing plate 14, attenuation module 13, reflecting module 15 and shell 12 all can be by two or more
Part composition, the radially disposed corresponding site in detection object 5 of various pieces is fixed again during installation.
Embodiment 1
Pipe under test is as shown in Fig. 2 wherein a points to d points are one section of region to be detected that length is 2m in pipeline.By signal
Reinforcing element is separately mounted to region both ends to be detected, and stimulus sensor is arranged at a against left end signal enhancing element, is received
Sensor is arranged on b points, is L away from left end signal enhancing element distances1, other elements are also sequentially connected；Defect is respectively away from reception
Sensor distance is L2, away from right-hand member signal enhancing element distances be L3, then, defect first time echo-signal D1 amplitude can table
It is shown as
Wherein, A0For excitation signal amplitude, A1For defect first time echo-signal D1 amplitude, RDFor defect reflection coefficient,
α is attenuation coefficient of the guided wave in pipe transmmision, for the pipeline, α 0.03dB/m.
According to guided waves propagation path, there are two propagation paths in defect third time echo-signal, i.e. a → d → a → c → b and
A → c → a → d → b, the echo-signal amplitude after superposition are represented by
Wherein, RCFor signal enhancing element reflectance factor.
Compared to defect first time echo-signal, defect third time echo-signal amplitude intensification factor n is represented by
Wherein, L is the detection zone length 2m of setting.The reflection R of the defects of the present embodimentDFor 0.1, signal increases
The reflection R of strong elementCFor 0.9, therefore the echo-signal intensification factor n in the present embodiment is 1.41.
From above formula, signal enhancing multiple and detection zone length, guided wave are anti-in the attenuation coefficient of pipe transmmision, defect
It is relevant with the reflectance factor of signal enhancing element to penetrate coefficient.Defect is smaller, defect reflection coefficients RDSmaller, intensification factor n is bigger,
Illustrate that the signal enhancing method is more efficient for small defects detection.
Embodiment 2
Fig. 3 is the signal enhancing component structure schematic diagram for tubulose or shaft-like object to be detected, including：Attenuation module
13rd, the part such as reflecting module 15, dividing plate 14 and shell 12.
Wherein, reflecting module 15, dividing plate 14 and attenuation module 13 collectively form the internal layer of signal enhancing element 1, by shell
It is fixed on the outer surface of object 5 to be detected, the material of reflecting module 15 is steel, and the material of attenuation module 13 is rubber.
Reflecting module 15 and attenuation module 13 are arranged at the outer surface of object 5 to be detected, and three pairs of dividing plates 14 are respectively arranged at
Between reflecting module 15 and attenuation module 13, and the both ends of the internal layer of signal enhancing element.
Attenuation module 13, reflecting module 15, shell 12 and three pieces of dividing plates 14 form by two parts above and below shape identical,
During installation, upper case 12 and three pieces of upper baffle plates 14 will be fixed with 12 tight fixed bolts 11, lower case 12 and three pieces
Lower partition 14 is fixed；Attenuation module 13, reflecting module 15 are positioned over corresponding position in detection object 5 again, wherein, reflection
Module is installed close to detection zone；Shell 12 is finally covered in the outside of attenuation module 13 and reflecting module 15, and with 6
Fishbolt 16 fixes two parts up and down of shell, that is, completes the installation process of signal enhancing element 1.Due to the decay mode
The small 1.0mm of external diameter of block 13 and the internal diameter of the reflecting module 15 ratio object 5 to be detected, can be close with detection object 5 after fixed
Fitting, so as to and make detection object 5 produce reversible deformation so as to play signal enhancing effect.And because the thickness of dividing plate 14 is less than
Attenuation module 13 and reflecting module 15, are not contacted directly after installation with object to be detected, will not be to supersonic guide-wave to be detected
Propagation on object has an impact.
Embodiment 3
Fig. 4 is according to the device operating diagram of the raising magnetic striction wave guide detection sensitivity of the present invention, detection object 5
For external diameter 25mm, internal diameter 20mm, length L1=2.8m steel pipe, 0.5mm depth translots defect 17 is away from pipeline left part distance L2=
0.8m, equivalent cross-sectional area loss about 14.4%.Setting is away from pipeline left end L3One section of=1.2m is detection zone.The device exists
Detection zone right part is mounted with the signal enhancing element 1 in one embodiment 2, and the internal diameter of the element is 24mm, and it reflects mould
Block 15 is installed close to sensor 3 (4), and detecting step is as follows：
(1) center processor control signal generator produces pumping signal, passes through power amplifier input stimulus sensor
3, excitation produces supersonic guide-wave in detection object 5, and propagates to the right；
(2) when supersonic guide-wave runs into signal enhancing element, first time echo-signal C1 and second of echo-signal C2 is produced；
When running into translot defect 17, first time echo-signal D1, second of echo-signal D2 and third time echo-signal D3 are produced；It is super
When guided Waves run into 5 right part of detection object, echo-signal E is produced；
(3) Guided waves signal is connected to A/D converter 10 through signal preprocessor 9, and is converted into data signal, input
Center processor 6；
(4) after center processor 6 receives data signal, the relation curve of time and echo amplitude is obtained by analysis such as
Shown in Fig. 5.
Fig. 5 be improve magnetic striction wave guide detection sensitivity device obtained by detection signal oscillogram, translot defect 17
Echo-signal three times be respectively D1, D2 and D3.It is a points pipeline left part, is b points at translot defect 17, the signal of right-hand member
Reinforcing element is c points.
As can be seen that because pipeline is decayed, translot defect 17 first time echo-signal D1 amplitudes are small, and rise in signal
In the stage, it is not easy to recognize, difficulty is brought to defects detection, if translot defect 17 is less than 0.8m away from sensor 4 is received, i.e. translot lacks
Before sunken 17 echo-signal appears in 0.3ms, due in check frequency, it will missing inspection occur.And D2 propagation road
Footpath is a → c → b → a, and because propagation path is unique, signal is not strengthened；D3 is superimposed by two ultrasonic guided wave signals
Formed, the propagation path of one of them is a → c → a → b → a, and another is a → b → a → c → a, because the two ultrasounds are led
The propagation distance of ripple signal is identical, so as to receive generation addition of waveforms at sensor, causes flaw echoes amplitude
Enhancing, as can be seen that D3 signal amplitudes are about 1.4 times of D1 amplitudes from figure.And pipeline right part first time echo-signal E is passed through
The attenuation module 13 of signal enhancing element 1 is crossed, when signal amplitude is compared with signal enhancing element 1 is not provided with, is reduced to original 1/
3, weaken its influence to pipe detection.Residing for defect multiecho signal enhancing and defect the position in region to be checked without
Close, when defect is in check frequency, still can carry out defect knowledge by observing the method for defect multiecho signal amplitude
Not, while according to guided wave sound path defective locations can be extrapolated.
As it will be easily appreciated by one skilled in the art that the foregoing is merely illustrative of the preferred embodiments of the present invention, not to
The limitation present invention, all any modification, equivalent and improvement made within the spirit and principles of the invention etc., all should be included
Within protection scope of the present invention.
Claims (5)
1. a kind of device for improving magnetic striction wave guide detection sensitivity, including stimulus sensor, reception sensor, signal occur
Device, power amplifier, signal preprocessor, A/D converter and center processor；The signal generator is used to produce excitation
Signal, the pumping signal input the stimulus sensor by the power amplifier, the excitation generation ultrasound in detection object
Guided wave signals；The reception sensor is used to receive ultrasonic guided wave signals and is converted into detection signal, described in detection signal warp
Signal preprocessor is sent to the A/D converter, and is converted into data signal；The center processor is used to control the letter
Number generator produces pumping signal, and the data signal received in the A/D converter is used to analyze and process；Its feature exists
In, in addition to signal enhancing element, the signal enhancing element include internal layer and shell；The internal layer includes reflecting module, institute
State shell by internal layer from radially fixed in the outer surface of detection object so that reflecting module to detection object apply pressure, order inspection
Survey object and produce reversible deformation；The material of the reflecting module is steel, aluminium or copper；The signal enhancing element internal layer include with it is anti-
The attenuation module that module is set up in parallel in the axial direction is penetrated, for absorbing supersonic guide-wave.
2. device as claimed in claim 1, it is characterised in that the material of attenuation module is rubber in the signal enhancing element
Glue, nylon or polytetrafluoroethylene (PTFE).
3. device as claimed in claim 1, it is characterised in that the signal enhancing element internal layer includes dividing plate；The dividing plate
It is located at the both ends of internal layer respectively, and between attenuation module and reflecting module, for by the attenuation module and the reflection
Module is fixed in the axial direction；The thickness of the dividing plate is less than the thickness of the attenuation module and the reflecting module, solid to ensure
Timing does not contact with detection object.
4. a kind of method using such as any one of claim 1-3 described device raising magnetic striction wave guide detection sensitivity, its
It is characterised by, comprises the following steps：
(1) two signal enhancing elements are arranged to the both ends in region to be detected, stimulus sensor and reception sensor are arranged at
Between two signal enhancing elements, signal generator is connected by power amplifier with stimulus sensor, is received sensor and is passed through
Signal preprocessor is connected with A/D converter, and center processor respectively connects the input and A/D converter of signal generator
Output end；
(2) center processor control signal generator produces pumping signal, by power amplifier input stimulus sensor, is examining
Survey excitation on object and produce supersonic guide-wave, and along the Propagation of the detection object；
(3) when supersonic guide-wave runs into the defects of detection zone, echo-signal is produced, the echo-signal is through signal enhancing element
Reflection, it is superimposed and amplitude enhancing at sensor receiving；
(4) above-mentioned echo-signal inputs the A/D converter through signal preprocessor, and is converted into data signal；
(5) after center processor receives data signal, the position of defect is obtained by Treatment Analysis.
5. as claimed in claim 4 improve magnetic striction wave guide detection sensitivity method, it is characterised in that stimulus sensor with
One of signal enhancing element is disposed adjacent.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510448223.9A CN104990984B (en) | 2015-07-27 | 2015-07-27 | A kind of device and method for improving magnetic striction wave guide detection sensitivity |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510448223.9A CN104990984B (en) | 2015-07-27 | 2015-07-27 | A kind of device and method for improving magnetic striction wave guide detection sensitivity |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN104990984A CN104990984A (en) | 2015-10-21 |
| CN104990984B true CN104990984B (en) | 2017-11-17 |
Family
ID=54302823
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510448223.9A Expired - Fee Related CN104990984B (en) | 2015-07-27 | 2015-07-27 | A kind of device and method for improving magnetic striction wave guide detection sensitivity |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104990984B (en) |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105806944B (en) * | 2016-03-16 | 2019-03-05 | 华中科技大学 | A kind of detection method and device of cable fatigue damage |
| CN107356681B (en) * | 2017-07-13 | 2019-08-20 | 武汉理工大学 | A kind of unidirectional detection method of magnetic striction wave guide |
| CN110174462B (en) * | 2019-06-06 | 2024-07-19 | 广西电网有限责任公司电力科学研究院 | Magnetostriction ultrasonic guided wave detection system and method for special working condition pipe |
| CN111678986B (en) * | 2020-07-17 | 2024-06-21 | 杭州浙达精益机电技术股份有限公司 | Ultrasonic guided wave detection device and method for edge defects of turbine blades |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1183142A (en) * | 1995-03-09 | 1998-05-27 | 西南研究院 | Non-destructive evaluaion of pipes and tubes using magnetostrictive sensors |
| CN101666783A (en) * | 2008-09-01 | 2010-03-10 | 中国科学院金属研究所 | Ultrasonic guided wave combined type nondestructive testing method and ultrasonic guided wave combined type nondestructive testing device |
| CN202362276U (en) * | 2011-12-14 | 2012-08-01 | 杭州浙大精益机电技术工程有限公司 | Magnetostrictive guided wave detector |
| CN103424471A (en) * | 2013-08-14 | 2013-12-04 | 哈尔滨工业大学深圳研究生院 | Detecting device and method based on magnetostrictive guide waves |
| CN104777231A (en) * | 2015-04-22 | 2015-07-15 | 华中科技大学 | Magnetostrictive guide wave receiver sensor and application thereof |
| CN204925042U (en) * | 2015-07-27 | 2015-12-30 | 华中科技大学 | Improve magnetic induced shrinkage or elongation guided wave detectivity's device |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2001074703A (en) * | 1999-09-06 | 2001-03-23 | Nippon Steel Corp | Ultrasonic flaw detecting apparatus |
| JP4644621B2 (en) * | 2006-03-29 | 2011-03-02 | 株式会社日立エンジニアリング・アンド・サービス | Ultrasonic inspection method and ultrasonic inspection apparatus |
| US7894874B2 (en) * | 2006-05-08 | 2011-02-22 | Luna Innovations Incorporated | Method and apparatus for enhancing the detecting and tracking of moving objects using ultrasound |
-
2015
- 2015-07-27 CN CN201510448223.9A patent/CN104990984B/en not_active Expired - Fee Related
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1183142A (en) * | 1995-03-09 | 1998-05-27 | 西南研究院 | Non-destructive evaluaion of pipes and tubes using magnetostrictive sensors |
| CN101666783A (en) * | 2008-09-01 | 2010-03-10 | 中国科学院金属研究所 | Ultrasonic guided wave combined type nondestructive testing method and ultrasonic guided wave combined type nondestructive testing device |
| CN202362276U (en) * | 2011-12-14 | 2012-08-01 | 杭州浙大精益机电技术工程有限公司 | Magnetostrictive guided wave detector |
| CN103424471A (en) * | 2013-08-14 | 2013-12-04 | 哈尔滨工业大学深圳研究生院 | Detecting device and method based on magnetostrictive guide waves |
| CN104777231A (en) * | 2015-04-22 | 2015-07-15 | 华中科技大学 | Magnetostrictive guide wave receiver sensor and application thereof |
| CN204925042U (en) * | 2015-07-27 | 2015-12-30 | 华中科技大学 | Improve magnetic induced shrinkage or elongation guided wave detectivity's device |
Also Published As
| Publication number | Publication date |
|---|---|
| CN104990984A (en) | 2015-10-21 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN104807888B (en) | A kind of non-colinear frequency mixing ultrasonic detection method for micro-crack linear measure longimetry | |
| CN104990984B (en) | A kind of device and method for improving magnetic striction wave guide detection sensitivity | |
| CN108872378B (en) | Nonlinear torsional mode ultrasonic guided wave method for evaluating micro-damage of metal round pipe | |
| Si et al. | Variational mode decomposition linked wavelet method for EMAT denoise with large lift-off effect | |
| CN108802185B (en) | Metal material defect detection sensor based on pulse eddy current and electromagnetic ultrasound | |
| CN100458437C (en) | Supersonic guide-wave time reversion detection apparatus and method for defect of pipeline | |
| US9915632B2 (en) | Long-range magnetostrictive ultrasonic guided wave scanner system and method | |
| Xu et al. | Detecting broken-wire flaws at multiple locations in the same wire of prestressing strands using guided waves | |
| CN104359979B (en) | A kind of carbon steel/al blasting multiple tube interlayer transverse crack detection method | |
| Zhang et al. | A magnetostrictive guided-wave nondestructive testing method with multifrequency excitation pulse signal | |
| Wang et al. | 3D modeling of circumferential SH guided waves in pipeline for axial cracking detection in ILI tools | |
| CN107271560A (en) | Ultrasonic detection method for large-scale composite material | |
| Ma et al. | The reflection of guided waves from simple dents in pipes | |
| CN104090034A (en) | Electromagnetic ultrasonic Lamb wave transducer for guided wave tomography | |
| CN108802203B (en) | rod-shaped member internal defect positioning method based on multi-mode technology | |
| CN104049038A (en) | Ultrasonic-acoustic emission detection method for composite material | |
| Hu et al. | Scattering characteristics of quasi-Scholte waves at blind holes in metallic plates with one side exposed to water | |
| Philtron et al. | Mode perturbation method for optimal guided wave mode and frequency selection | |
| Cawley | Guided waves in long range nondestructive testing and structural health monitoring: Principles, history of applications and prospects | |
| CN114184682B (en) | Double-chaotic system detection method for weak ultrasonic guided wave signals | |
| CN105806944A (en) | Method and device for detecting fatigue damage of cable | |
| Li et al. | Differential electromagnetic acoustic probes for quantitative detection of pipeline cracks | |
| CN112147235B (en) | Electromagnetic ultrasonic excitation device for pipeline guided wave mixing detection | |
| CN113874721B (en) | Method and apparatus for non-destructive testing of sheet material | |
| CN204925042U (en) | Improve magnetic induced shrinkage or elongation guided wave detectivity's device |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20171117 Termination date: 20210727 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |