CN103575808B - Based on the high real-time quantitative supersonic detection method of multi-angle Stereo matching - Google Patents
Based on the high real-time quantitative supersonic detection method of multi-angle Stereo matching Download PDFInfo
- Publication number
- CN103575808B CN103575808B CN201310528906.6A CN201310528906A CN103575808B CN 103575808 B CN103575808 B CN 103575808B CN 201310528906 A CN201310528906 A CN 201310528906A CN 103575808 B CN103575808 B CN 103575808B
- Authority
- CN
- China
- Prior art keywords
- ultrasonic
- grid cell
- ultrasonic transducer
- real
- signal
- 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 title claims abstract description 30
- 230000007547 defect Effects 0.000 claims abstract description 22
- 238000002604 ultrasonography Methods 0.000 claims abstract description 20
- 238000011002 quantification Methods 0.000 claims abstract description 14
- 230000009466 transformation Effects 0.000 claims abstract description 12
- 238000000034 method Methods 0.000 claims description 35
- 238000012360 testing method Methods 0.000 claims description 12
- 238000000354 decomposition reaction Methods 0.000 claims description 9
- 238000012545 processing Methods 0.000 claims description 9
- 238000012512 characterization method Methods 0.000 claims description 8
- 239000000463 material Substances 0.000 claims description 7
- 230000005540 biological transmission Effects 0.000 claims description 3
- 238000013079 data visualisation Methods 0.000 claims description 3
- 238000002592 echocardiography Methods 0.000 claims description 3
- 239000004615 ingredient Substances 0.000 claims description 3
- 238000005086 pumping Methods 0.000 claims description 3
- 238000005070 sampling Methods 0.000 claims description 3
- 230000000644 propagated effect Effects 0.000 claims description 2
- 238000004458 analytical method Methods 0.000 abstract description 3
- 238000010586 diagram Methods 0.000 description 7
- 238000003384 imaging method Methods 0.000 description 5
- 238000005516 engineering process Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 230000001066 destructive effect Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000005284 excitation Effects 0.000 description 1
- 239000000284 extract Substances 0.000 description 1
- 238000007689 inspection Methods 0.000 description 1
- 230000003993 interaction Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 238000012544 monitoring process Methods 0.000 description 1
- 210000000056 organ Anatomy 0.000 description 1
- 230000005855 radiation Effects 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Landscapes
- Investigating Or Analyzing Materials By The Use Of Ultrasonic Waves (AREA)
Abstract
The present invention discloses a kind of high real-time quantitative supersonic detection method based on multi-angle Stereo matching.Characterize ability for the meticulous quantification of current ultrasonic detection equipment defect and detect the serious bottlenecks existed between real-time, specimen grating to be checked is formatted by the basic thought that first the present invention quotes finite element, then multiple ultrasonic transducer be arranged in respectively in space in different azimuth is adopted to carry out exposure cage unit successively, then on the basis obtaining channel ultrasonic reflection echo signal, utilize the multiresolution Stereo matching based on wavelet transformation to associate, achieve the flexible shifting relation coordinated the meticulous quantification of defect and characterize ability and detect between real-time.The present invention acquires the ultrasonic reflection echoed signal of multi-angle, has quantity of information and carries complete advantage, is more conducive to realizing quantification and detects.Owing to adopting the ultimate principle of wavelet transformation, the present invention has multiresolution and time domain and frequency domain combined analysis ability, is particularly suitable for the time frequency signals such as such as ultrasound wave.
Description
Technical field
The invention belongs to industrial ultrasonic detection technique field, relate to a kind of high real-time quantitative supersonic detection method based on multi-angle Stereo matching.
Background technology
Pipeline material, as a kind of finished product raw material of economy, is widely applied to as in the middle of shipping industry, biomedicine, automobile, petrochemical complex, civil construction and municipal water supply air supply system etc. and human being's production and closely bound up industry of living.But along with the growth of tenure of use, the factors such as corrosion and fatigue add pipeline and occur to leak the possibility of even exploding.Therefore, be extremely necessary that adopting ultrasonic non-destructive inspection techniques to carry out implements factory testing and in-service monitoring of tools to tubing, reduces the loss of human life and the property surprisingly caused.
Ultrasonic NDT is an ancient subject, is developed into the quantitative measurement technology reached its maturity at present by initial qualitative detection.Ultrasonic qualitative detection utilizes ultrasonic pulse-echo method to obtain A sweep waveform, the rough position of whether existing defects and defect on operating personnel roughly judge according to A sweep oscillogram and experience; And using ultrasonic quantitative to detect be based on A sweep waveform, coordinate the scanning form of various machinery, define that test specimen to be checked is horizontal, the two-dimensional imaging result of longitudinal section, be i.e. the scintigram such as B, C, S.Along with computer software and hardware ground development, imaging resolution is more and more higher, although two dimensional image can reflect shape, the size of defect to a certain extent, its some aspect existed is not enough, does not also reach the requirement of people for the quantitatively characterizing that becomes more meticulous.These are not enough, and aspect main manifestations is, first, due to ultrasonic transducer quantity, location arrangements and scanning mode, determine ultrasonic transducer and only receive from the echoed signal on single direction, and the sign of above-mentioned imaging results also just to some cross sections; If defect has certain volume, so carry incomplete to the side of defect and the information of bottom surface, low to the overall quantification degree of defect.The second, adopt ultrasonic scanning tomograph imaging method, accurately can characterize volume flaw, as patent " ultrasound superficial tissue and organ volume scan tomograph imaging method " (number of patent application is CN201210197253.3); But echotomography scanning imagery is based on repeatedly B(or C) basis of scintigram is formed by stacking, inevitable consuming time, also need more storage hardware.Visible, the meticulous sign of quantification of defect extracts the process of feature-rich information; And the process inevitable at substantial time to the collection of mass data, process and analysis, lose and detect real-time.Exactly because there is this serious restricting relation with detection real-time in the quantification that defect characterizes, extravagantly hope that a kind of method can possess high real-time simultaneously and strong quantification ability is unpractical, only have the relation of effective coordination between them, just can obtain gratifying effect.
Summary of the invention
The present invention is intended to propose a kind of high real-time quantitative supersonic detection method based on multi-angle Stereo matching, characterizes to realize flexible Ultrasonic Detection quantification of coordinating and detects relation shifting between real-time.
Technical matters of the present invention is solved by following technical scheme:
Based on the high real-time quantitative supersonic detection method of multi-angle Stereo matching, should comprise the following steps:
Step (1). test specimen to be checked is divided into the adjustable grid cell of size, rebuilds the elementary cell characterized with material as defect.
Step (2). two or more ultrasonic transducers of in space, different azimuth being arranged, adjustment ultrasonic transducer attitude, the acoustic beam of each ultrasonic transducer is only converged in grid cell space, and every a branch of sound wave to converge to from surface of ultrasonic transducer the sound path that grid cell experiences consistent.
Step (3). encourage each ultrasonic transducer, according to step (2) requirement, the sound wave that they send is by the maximum sound field of corresponding grid cell place forming energy simultaneously.
Step (4). utilize the channel ultrasonic detecting instrument of bus-type card insert type, carry out the ultrasonic reflection echoed signal on real-time sampling and each passage of process simultaneously.
Step (5). adopt the multiresolution Stereo matching based on wavelet transformation to associate, obtain and the acoustic characteristic of grid cell is characterized, then coordinate upper mechanical scanning, and then carry out exosyndrome material with a series of such grid cell and even rebuild inherent vice.
Step (6). application data visualization technique, realizes the real-time characterization display of defect.
Described in step (1), test specimen to be checked is divided into the adjustable grid cell of size, its concrete methods of realizing is as follows: first, treats and inspects part and carry out stress and strain model, investigate the real-time of detection system according to the coarse resolution of acquiescence; If under meeting the prerequisite of result display real-time, by segmenting grid further, ultrasonic meticulous quantification can be improved on the whole and characterizes ability; When result display real-time is not good enough, by reducing the grid division resolution in region of loseing interest in, while making to improve real-time experience, in area-of-interest, higher quantification is still kept to characterize ability.
Two or more ultrasonic transducers of in space, different azimuth being arranged described in step (2), its concrete methods of realizing is as follows: two ultrasonic transducers, then in a plane, be placed in X-axis, Y direction respectively; Three ultrasonic transducers, be then placed in X-axis, Y-axis, Z-direction respectively; If ultrasonic transducer quantity is more than three, then, above test specimen to be checked, ultrasonic transducer is arranged into circle; Settle ultrasonic transducer in the manner described above, can being convenient to meet every a branch of sound wave described in step (2), to converge to from surface of ultrasonic transducer the sound path that grid cell experiences consistent.In addition, the acoustic beam of each ultrasonic transducer described in step (2) only converges in grid cell space, and its concrete methods of realizing is as follows: ultrasound wave has directive property, and its energy major part propagated is at spread angle
scope in.According to the spread angle of ultrasonic transducer
with the distance of surface of ultrasonic transducer from target grid cell
, can the beam width of computation grid place xsect
.Beam width
compare with the size marking off grid cell in step (1), by adjustment surface of ultrasonic transducer from the distance of target grid cell, make beam width
be less than the size of grid cell, thus realize multi beam sound wave and only converge in grid cell space.
Formula 1 is:
, can the half-angle of spread be calculated; Wherein,
represent the half-angle of spread,
represent wavelength,
represent effective wafer diameter of ultrasonic transducer.
Formula 2 is:
, can the beam width of computation grid place xsect; Wherein,
represent beam width,
represent the half-angle of spread,
represent the distance of surface of ultrasonic transducer from grid cell.
The multi-channel detection instrument of bus-type card insert type described in step (4), its concrete ingredient comprises: based on the 6U cabinet of PXI bus, x86 mainboard, and polylith single channel Ultrasonic Detection board.This many card structures realize parallel transmission, the Storage and Processing of channel ultrasonic reflection echo signal.In theory, 256 conventional Ultrasound sense channels should be extended at most based on the channel ultrasonic detecting instrument of PXI bus.Single channel Ultrasonic Detection board wherein comprises: ultrasound emission exciting circuit, ultrasonic reflection echoed signal gain soft readjustment circuit, and ultrasonic reflection echo signal sample and digital signal processing unit; By ultrasound emission exciting circuit generation high voltage narrow pulse pumping signal, be loaded into ultrasonic transducer and make it forced vibration and produce ultrasound wave; Ultrasonic reflection echo is input to ultrasonic reflection echoed signal gain soft readjustment circuit after being converted to electric signal by ultrasonic reception transducer, main realization is improved signal SNR and improve flaw echoes amplitude; Echoed signal after analog gain adjustment will be sampled by AD, and be input to one piece of field programmable gate array (FPGA); All digital signal processings will realize with parallel pipeline form in FPGA, substantially increase the real-time of signal transacting.
The multiresolution Stereo matching based on wavelet transformation described in step (5) associates, and its concrete methods of realizing is as follows: application wavelet transformation technique carries out Multiresolution Decomposition to each channel ultrasound reflection echo signal; According to the correlative study achievement of Logan theorem and Mallat, the signal zero crossing after utilizing wavelet decomposition on each subband carrys out the characteristic of characterization signal; Combine the characteristic parameter that the signal zero crossing after the wavelet decomposition of multiple passage associates as Stereo matching, realize differentiating the correlativity of the ultrasonic reflection echoed signal of same grid cell different directions and merging, and then utilize the different directions defect grid characterization result with correlativity to reconstruct the quantitative informations such as the size of defect, shape and orientation.
Beneficial effect of the present invention is mainly manifested in:
1, characterize ability for the meticulous quantification of current ultrasonic detection equipment defect and detect the serious bottlenecks existed between real-time, adopt the method for the invention flexiblely can coordinate shifting relation therebetween, develop into a kind of high real-time quantitative supersonic detection method.
2, the method for the invention quantity of information is carried complete, is more conducive to realizing quantification and detects.
3, the method for the invention has multiresolution and time domain and frequency domain combined analysis ability, is particularly suitable for the process to time frequency signals such as ultrasound waves.
4, the method for the invention processes multi channel signals with the collection of parallel pipeline form, and each passage finally only retains a zero crossing feature carries out follow-up Stereo matching, possesses significant detectability in real time.
Accompanying drawing explanation
Fig. 1 is the process flow diagram of the high real-time quantitative supersonic detection method based on multi-angle Stereo matching.
Fig. 2 is the schematic diagram of the concrete case study on implementation of the method for the invention.
Fig. 3 is the schematic diagram of ultrasonic transducer multi-angle arrangement.
Fig. 4 is the schematic diagram of ultrasonic transducer radiation acoustic beam.
Fig. 5 is the frame diagram of channel ultrasonic detecting instrument of the present invention.
Fig. 6 is the schematic diagram that the multiresolution Stereo matching based on wavelet transformation of the present invention associates.
Embodiment
Below in conjunction with accompanying drawing, the invention will be further described.
As shown in Figure 1, the general flow based on the high real-time quantitative supersonic detection method of multi-angle Stereo matching comprises, and: S1 represents test specimen to be checked is divided into the adjustable grid cell of size, rebuilds the elementary cell characterized with material as defect; In space, different azimuth to be arranged two or more ultrasonic transducers, adjustment ultrasonic transducer attitude, the acoustic beam of each ultrasonic transducer is only converged in grid cell space, and every a branch of sound wave to converge to from surface of ultrasonic transducer the sound path that grid cell experiences consistent; S2 represents each ultrasonic transducer of excitation, and the sound wave that they send is by the maximum sound field of corresponding grid cell place forming energy; S3 represents sound field and grid interaction back reflection ultrasound echo signal; S4 represents the channel ultrasonic detecting instrument utilizing bus-type card insert type, can carry out the ultrasonic reflection echoed signal on real-time sampling and each passage of process simultaneously; S5 adopts the multiresolution Stereo matching based on wavelet transformation to associate, obtain and the acoustic characteristic of grid cell is characterized, coordinate upper mechanical scanning again, repeat S2 ~ S5 process and scan other grid successively, and then carry out exosyndrome material with a series of such grid cell and even rebuild inherent vice; S6 application data visualization technique, realizes the real-time display of testing result;
The schematic diagram of the concrete case study on implementation of the method for the invention as shown in Figure 2.In figure, ultrasonic transducer quantity is more than three, therefore above test specimen to be checked, ultrasonic transducer is arranged into circle, is convenient to make every a branch of sound wave to converge to from surface of ultrasonic transducer the sound path that grid cell experiences consistent.If only use three ultrasonic transducers, then ultrasonic transducer 1,2,3 is placed in X-axis, Y-axis, Z-direction respectively, three ultrasonic transducers and test specimen to be checked 4 are according to arranging as shown in Figure 3.
For making the acoustic beam of each ultrasonic transducer only converge in grid cell space, need roughly to calculate the width of acoustic beam in cross section, grid place, circular is as follows, below the parameter that comprises in formula as shown in Figure 4.
Formula 1 is:
, can the half-angle of spread be calculated; Wherein,
represent the half-angle of spread,
represent wavelength,
represent effective wafer diameter of ultrasonic transducer.
Formula 2 is:
, can the beam width of computation grid place xsect; Wherein,
represent beam width,
represent the half-angle of spread,
represent the distance of surface of ultrasonic transducer from grid cell.
Be the channel ultrasonic detecting instrument that in Fig. 1, S4 is used as shown in Figure 5, its concrete ingredient comprises: based on 6U cabinet 5, the x86 mainboard 6 of PXI bus, and polylith single channel Ultrasonic Detection board 7.This many card structures realize parallel transmission, the Storage and Processing of channel ultrasonic reflection echo signal.In theory, 256 conventional Ultrasound sense channels should be extended at most based on the channel ultrasonic detecting instrument of PXI bus.Single channel Ultrasonic Detection board 7 wherein comprises: ultrasound emission exciting circuit 8, ultrasonic reflection echoed signal gain soft readjustment circuit 9, and ultrasonic reflection echo signal sample and digital signal processing unit 10; There is high voltage narrow pulse pumping signal by ultrasound emission exciting circuit 8, be loaded into ultrasonic transducer and make it forced vibration and produce ultrasound wave; Ultrasonic reflection echo is input to ultrasonic reflection echoed signal gain soft readjustment circuit 9 after being converted to electric signal by ultrasonic reception transducer, main realization is improved signal SNR and improve flaw echoes amplitude; Echoed signal after analog gain adjustment will sampled by AD, and be input to one piece of field programmable gate array (FPGA); All digital signal processings will realize with parallel pipeline form in FPGA, substantially increase the real-time of signal transacting.
The multiresolution Stereo matching based on wavelet transformation as shown in Figure 6 associates, and its concrete methods of realizing is as follows: application wavelet transformation technique carries out Multiresolution Decomposition to each channel ultrasound reflection echo signal; According to the correlative study achievement of Logan theorem and Mallat, the signal zero crossing after utilizing wavelet decomposition on each subband carrys out the characteristic of characterization signal; Combine the characteristic parameter that the signal zero crossing after the wavelet decomposition of multiple passage associates as Stereo matching, realize differentiating the correlativity of the ultrasonic reflection echoed signal of same grid cell different directions and merging, and then utilize the different directions defect grid characterization result with correlativity to reconstruct the quantitative informations such as the size of defect, shape and orientation.
Claims (4)
1., based on the high real-time quantitative supersonic detection method of multi-angle Stereo matching, its feature comprises the following steps in the method:
Step (1). test specimen to be checked is divided into the adjustable grid cell of size, rebuilds the elementary cell characterized with material as defect; Test specimen to be checked is divided into the adjustable grid cell of size, and its concrete methods of realizing is as follows:
First, treat according to the coarse resolution of acquiescence and inspect part and carry out stress and strain model, investigate the real-time of detection system; If under meeting the prerequisite of result display real-time, by segmenting grid further, improving ultrasonic meticulous quantification on the whole and characterizing ability; When result display real-time is not good enough, by reducing the grid division resolution in region of loseing interest in, while making to improve real-time experience, in area-of-interest, higher quantification is still kept to characterize ability;
Step (2). two or more ultrasonic transducers of in space, different azimuth being arranged, adjustment ultrasonic transducer attitude, the acoustic beam of each ultrasonic transducer is only converged in grid cell space, and every a branch of sound wave to converge to from surface of ultrasonic transducer the sound path that grid cell experiences consistent;
Step (3). encourage each ultrasonic transducer, according to step (2) requirement, the sound wave that they send is by the maximum sound field of corresponding grid cell place forming energy simultaneously;
Step (4). utilize the channel ultrasonic detecting instrument of bus-type card insert type, carry out the ultrasonic reflection echoed signal on real-time sampling and each passage of process simultaneously;
Step (5). adopt the multiresolution Stereo matching based on wavelet transformation to associate, obtain and the acoustic characteristic of grid cell is characterized, then coordinate upper mechanical scanning, and then carry out exosyndrome material with a series of such grid cell and even rebuild inherent vice;
The described multiresolution Stereo matching based on wavelet transformation associates, and its concrete methods of realizing is as follows:
Application wavelet transformation technique carries out Multiresolution Decomposition to each channel ultrasound reflection echo signal; Signal zero crossing after utilizing wavelet decomposition on each subband carrys out the characteristic of characterization signal; Combine the characteristic parameter that the signal zero crossing after the wavelet decomposition of multiple passage associates as Stereo matching, realize differentiating the correlativity of the ultrasonic reflection echoed signal of same grid cell different directions and merging, and then utilize the different directions defect grid characterization result with correlativity to reconstruct the quantitative information of defect size, shape and orientation;
Step (6). application data visualization technique, realizes the real-time characterization display of defect.
2. the high real-time quantitative supersonic detection method based on multi-angle Stereo matching according to claim 1, it is characterized in that: two or more ultrasonic transducers of in space, different azimuth being arranged described in step (2), its concrete methods of realizing is as follows:
Two ultrasonic transducers, be then placed in X-axis, Y direction respectively in a plane; Three ultrasonic transducers, be then placed in X-axis, Y-axis, Z-direction respectively; If ultrasonic transducer quantity is more than three, then, above test specimen to be checked, ultrasonic transducer is arranged into circle; Settle ultrasonic transducer in the manner described above, meeting every a branch of sound wave described in step (2), to converge to from surface of ultrasonic transducer the sound path that grid cell experiences consistent.
3. the high real-time quantitative supersonic detection method based on multi-angle Stereo matching according to claim 1, it is characterized in that: the acoustic beam of each ultrasonic transducer described in step (2) only converges in grid cell space, and its concrete methods of realizing is as follows:
Ultrasound wave has directive property, and its energy major part propagated is in the scope of spread angle 2 θ; According to spread angle 2 θ of ultrasonic transducer and the surface of ultrasonic transducer distance l from target grid cell, the beam width d of computation grid place xsect; The size marking off grid cell in beam width d and step (1) is compared, by the distance l of adjustment surface of ultrasonic transducer from target grid cell, make beam width d be less than the size of grid cell, thus realize multi beam sound wave and only converge in grid cell space;
Wherein
d=2tan (θ) l, λ represent wavelength, and D represents effective wafer diameter of ultrasonic transducer.
4. the high real-time quantitative supersonic detection method based on multi-angle Stereo matching according to claim 1, it is characterized in that: the multi-channel detection instrument of bus-type card insert type described in step (4), its concrete ingredient comprises:
Based on the 6U cabinet of PXI bus, x86 mainboard, and polylith single channel Ultrasonic Detection board; This many card structures realize parallel transmission, the Storage and Processing of channel ultrasonic reflection echo signal; Single channel Ultrasonic Detection board wherein comprises: ultrasound emission exciting circuit, ultrasonic reflection echoed signal gain soft readjustment circuit, and ultrasonic reflection echo signal sample and digital signal processing unit; By ultrasound emission exciting circuit generation high voltage narrow pulse pumping signal, be loaded into ultrasonic transducer and make it forced vibration and produce ultrasound wave; Ultrasonic reflection echo is input to ultrasonic reflection echoed signal gain soft readjustment circuit after being converted to electric signal by ultrasonic reception transducer, realize improving signal SNR and improving flaw echoes amplitude; Echoed signal after analog gain adjustment will be sampled by AD, and be input to one piece of on-site programmable gate array FPGA; All digital signal processings will realize with parallel pipeline form in FPGA.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310528906.6A CN103575808B (en) | 2013-10-30 | 2013-10-30 | Based on the high real-time quantitative supersonic detection method of multi-angle Stereo matching |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310528906.6A CN103575808B (en) | 2013-10-30 | 2013-10-30 | Based on the high real-time quantitative supersonic detection method of multi-angle Stereo matching |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103575808A CN103575808A (en) | 2014-02-12 |
| CN103575808B true CN103575808B (en) | 2016-04-06 |
Family
ID=50048031
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310528906.6A Active CN103575808B (en) | 2013-10-30 | 2013-10-30 | Based on the high real-time quantitative supersonic detection method of multi-angle Stereo matching |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN103575808B (en) |
Families Citing this family (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104535656B (en) * | 2014-12-17 | 2017-10-20 | 江苏大学 | Full optical non-contact plies of composite material splits damage detection system and method |
| CN104809293B (en) * | 2015-04-29 | 2018-10-09 | 深圳市神视检验有限公司 | A kind of section emulation mode that acoustic beam is propagated in intersection and device |
| EP3482390B1 (en) * | 2016-07-08 | 2021-09-08 | Insightec Ltd. | Systems and methods for ensuring coherence between multiple ultrasound transducer arrays |
| EP3483567A1 (en) * | 2017-11-08 | 2019-05-15 | Siemens Aktiengesellschaft | Angle sensor with annular waveguide as a material measure |
| US10502718B2 (en) * | 2017-12-27 | 2019-12-10 | Broadsound Corporation | Method and system for determining an optimum drive signal for an acoustic transducer |
| CN112903813B (en) * | 2021-01-14 | 2023-03-14 | 北京安铁软件技术有限公司 | Railway track ultrasonic automatic flaw detection method |
| CN114113344B (en) * | 2021-11-11 | 2023-11-07 | 大连理工大学 | Electromagnetic ultrasonic stress measurement system and use method thereof |
| CN116735721B (en) * | 2023-08-15 | 2023-11-07 | 浙江大学 | Flexible coupling wedge block for ultrasonic detection and application method thereof |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6092421A (en) * | 1998-08-28 | 2000-07-25 | California Institute Of Technology | Ultrasonic system for automatic determination of material stiffness constants |
| CN1693889A (en) * | 2004-04-30 | 2005-11-09 | 通用电气公司 | Method of ultrasonically inspecting airfoils |
| CN101477085A (en) * | 2004-06-14 | 2009-07-08 | 株式会社东芝 | Three-dimensional ultrasonic imaging device |
| CN102141543A (en) * | 2010-12-28 | 2011-08-03 | 天津大学 | Method and device for detecting quality of laser welding based on microphone arrays |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP4430997B2 (en) * | 2004-07-13 | 2010-03-10 | 富士フイルム株式会社 | Ultrasonic transceiver |
-
2013
- 2013-10-30 CN CN201310528906.6A patent/CN103575808B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6092421A (en) * | 1998-08-28 | 2000-07-25 | California Institute Of Technology | Ultrasonic system for automatic determination of material stiffness constants |
| CN1693889A (en) * | 2004-04-30 | 2005-11-09 | 通用电气公司 | Method of ultrasonically inspecting airfoils |
| CN101477085A (en) * | 2004-06-14 | 2009-07-08 | 株式会社东芝 | Three-dimensional ultrasonic imaging device |
| CN102141543A (en) * | 2010-12-28 | 2011-08-03 | 天津大学 | Method and device for detecting quality of laser welding based on microphone arrays |
Also Published As
| Publication number | Publication date |
|---|---|
| CN103575808A (en) | 2014-02-12 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN103575808B (en) | Based on the high real-time quantitative supersonic detection method of multi-angle Stereo matching | |
| Liu et al. | Damage localization in aluminum plate with compact rectangular phased piezoelectric transducer array | |
| US9638671B2 (en) | Systems and methods for damage detection in structures using guided wave phased arrays | |
| Leckey et al. | Guided waves in anisotropic and quasi-isotropic aerospace composites: Three-dimensional simulation and experiment | |
| Ploix et al. | Measurement of ultrasonic scattering attenuation in austenitic stainless steel welds: Realistic input data for NDT numerical modeling | |
| Lhuillier et al. | Investigation of the ultrasonic attenuation in anisotropic weld materials with finite element modeling and grain-scale material description | |
| Nguyen et al. | Defect mapping in pipes by ultrasonic wavefield cross-correlation: a synthetic verification | |
| CN104749253A (en) | Ultrasonic back scattering imaging method and device for inner defects of cylindrical workpiece | |
| Lee et al. | Quantitative tomographic visualization for irregular shape defects by guided wave long range inspection | |
| Harvey et al. | Finite element analysis of ultrasonic phased array inspections on anisotropic welds | |
| Morii et al. | A new inverse algorithm for tomographic reconstruction of damage images using Lamb waves | |
| Payan et al. | Ultrasonic methods | |
| Ge et al. | High-resolution ultrasonic imaging technology for the damage of concrete structures based on total focusing method | |
| Levine et al. | Guided wave localization of damage via sparse reconstruction | |
| Liu et al. | Ultrasonic phased array total focusing method of imaging with Rayleigh waves based on principal component analysis | |
| Kohl et al. | 3D-visualisation of NDT data using a data fusion technique | |
| Planès et al. | LOCADIFF: Locating a weak change with diffuse ultrasound | |
| Hettler et al. | Application of a probabilistic algorithm for ultrasonic guided wave imaging of carbon composites | |
| CN103837580B (en) | A kind of bimodulus lossless detection method combined based on ultrasonic and electromagnetic acoustic | |
| Merazi Meksen et al. | A method to improve and automate flat defect detection during ultrasonic inspection | |
| Packo et al. | Structure damage modelling for guided waves-based SHM systems testing | |
| Liu et al. | Full laser-based Lamb waves array imaging based on the two-dimensional multiple signal classification algorithm | |
| Li et al. | Intelligent Evaluation of Crack detection with Laser Ultrasonic technique | |
| Engle | Quantitative flaw characterization with ultrasonic phased arrays | |
| Wang et al. | Development of an ultrasonic system for composite material inspection |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |