CN110500974A - Based on the thickness of workpiece detection method for improving peak value identification - Google Patents
Based on the thickness of workpiece detection method for improving peak value identification Download PDFInfo
- Publication number
- CN110500974A CN110500974A CN201910723328.9A CN201910723328A CN110500974A CN 110500974 A CN110500974 A CN 110500974A CN 201910723328 A CN201910723328 A CN 201910723328A CN 110500974 A CN110500974 A CN 110500974A
- Authority
- CN
- China
- Prior art keywords
- thickness
- workpiece
- value
- wave crest
- peak
- 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.)
- Granted
Links
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
- G01B17/00—Measuring arrangements characterised by the use of infrasonic, sonic or ultrasonic vibrations
- G01B17/02—Measuring arrangements characterised by the use of infrasonic, sonic or ultrasonic vibrations for measuring thickness
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Length Measuring Devices Characterised By Use Of Acoustic Means (AREA)
Abstract
The invention discloses a kind of based on the thickness of workpiece detection method for improving peak value identification, and step 1 calculates spread speed of the ultrasound echo signal in workpiece；Step 2, one wave crest initial position of ultrasound echo signal waveform setting for collected measured workpiece, determine from the position of the maximum value corresponding points after the position, as first wave crest point；One peak-to-peak minimum range is set again, determines a maximum value, i.e., the position of second wave crest point plus the position obtained after this distance by the position of first wave crest point；The time difference t ' of two wave crest points is obtained by two adjacent peaks point positions, finds out measured workpiece thickness value；Step 3, when it is abrupt changes in thickness that large change, which occurs, for waveform, position before enabling gate first rest on only measures a thickness value, when waveform tends towards stability, calls second peak value recognizer of the step 2；Step 4 is modified thickness measuring result.The present invention preferably resolves the indeterminable problem of abrupt changes in thickness.
Description
Technical field
The present invention relates to ultrasonic successive mining technical fields, are realized more particularly to a kind of using improvement peak value recognizer
The method of ultrasonic successive mining.
Background technique
During processing and manufacturing and measurement, the thickness of large thin-wall element is a considerable index.Such as: it is thick
It spends too big, wastes material, will lead to that workpiece weight is excessive, influence the performance for being associated with workpiece, and then shadow is caused to entire assembly
It rings；Thickness is too small, and the stiffness and strength for also resulting in workpiece are too low, is unsatisfactory for performance requirement.More because of large thin-wall part
Thickness determines the material distribution of entire workpiece.It includes workpiece that the material of workpiece, which is distributed and then influences the working performance of entire workpiece,
Rotary inertia, bending resistance and the features such as antitorque.Therefore, the wall thickness measuring of large thin-wall part and control are particularly important,
Only enough accuracy and quick measurement method just can guarantee that final workpiece meets size and required precision, can guarantee most
Automobile, the aerospace equipment at end meet design requirement, smoothly realize corresponding task.
Since ultrasonic probe can all receive echo in entire contact area, rather than only it is received back in center probe point
Wave, therefore will appear at thickness of workpiece mutation the ultrasonic echo of two thickness, excusing from death echo is known using traditional peak value
Other algorithm will appear the problem of thickness measure inaccuracy, it is therefore desirable to conventional peak recognizer improved, it is super to realize
The continuous accurate thickness measuring of sound.
Summary of the invention
The inaccurate problem of the thickness measure occurred at abrupt changes in thickness, the present invention propose a kind of based on improvement peak value identification
Thickness of workpiece detection method, based on improve peak value recognizer the ultrasound echo signal at abrupt changes in thickness is recognized
And gate reservation method is introduced, realize more accurate thickness of workpiece detection.
Of the invention is a kind of based on the thickness of workpiece detection method for improving peak value identification, and this method includes walking in detail below
It is rapid:
Step 1 chooses standard workpiece known to and thickness identical as measured workpiece material, respectively to measured workpiece and standard
Workpiece acquires two groups of ultrasound echo signals, and the time point of ultrasound echo signal waveform the first two peak value of selection standard workpiece calculates
Time difference t, t as ultrasonic echo standard workpiece upper and lower interface round trip time；It is calculated based on following formula super
Spread speed of the sound echo-signal in workpiece:
Wherein, dStandard workpieceIndicate that standard workpiece thickness, c indicate spread speed of the ultrasonic wave in workpiece；
Step 2, one wave crest initial position of ultrasound echo signal waveform setting for collected measured workpiece, determine
From the position of the maximum value corresponding points after the position, as first wave crest point；One peak-to-peak minimum range is set again, by
The position of one wave crest point determines a maximum value, i.e., the position of second wave crest point plus the position obtained after this distance；
The time difference t ' of two wave crest points is obtained by two adjacent peaks point positions, t ' is as ultrasonic echo in measured workpiece upper and lower interface
The time of round trip；The spread speed that obtains in spread speed c, that is, step 1 of ultrasonic echo simultaneously, then can be in conjunction with following formula
Find out measured workpiece thickness value:
Wherein, dMeasured workpieceIndicate that measured workpiece thickness, c indicate spread speed of the ultrasonic wave in workpiece；
Step 3 proposes the method for gate reservation in this step, when it is abrupt changes in thickness that large change, which occurs, for waveform,
Position before enabling gate first rest on only measures a thickness value, when waveform tends towards stability, recalls the step 2
Second peak value recognizer；The waveform, which tends towards stability, refers to the width of first echo of back wave of previous thickness
Value is less than the back wave of the latter thickness；
Step 4 obtains thickness-time series chart according to the measurement result of step 3, is modified to thickness measuring result, specifically
Steps are as follows: since n-th thickness, often measuring a thickness, is successively scanned to nearest N number of thickness, and with working as
The thickness of preceding scanning subtracts previous thickness, if difference is more than preset threshold value T1, marks this thickness, scans through N number of thickness
Afterwards, continue to scan backward, if the difference of the serial number i of marked thickness corresponding points and the serial number j of previous marked thickness corresponding points
Less than threshold value T2, then it is assumed that the two thickness and its between all thickness be all abnormal, and it is revised as serial number
The thickness value of i-1.Thus it has carried out second after scanning, has exported first thickness of this N number of thickness；When measurement obtains another
After new thickness, above-mentioned operation is executed again: since second thickness value, the thickness value and preceding one-shot measurement that measure every time
Thickness value make the difference, when difference be greater than threshold value then mark the corresponding serial number of this thickness, when the difference of two neighboring marking serial numbers is small
When threshold value then by two serial numbers and its between all thickness values be revised as the previous thickness value of first marking serial numbers.
Compared with prior art, the present invention preferably resolves the indeterminable problem of abrupt changes in thickness
Detailed description of the invention
Fig. 1 is of the invention based on the thickness of workpiece detection method overall flow schematic diagram for improving peak value identification；
Fig. 2 is ultrasound echo signal waveform diagram；
Fig. 3 is thickness-time series chart schematic diagram.
Specific embodiment
Technical solution of the present invention is described in detail with reference to the accompanying drawings and examples.
As shown in Figure 1, for the thickness of workpiece detection method overall flow schematic diagram of the invention based on improvement peak value identification,
Specifically includes the following steps:
Step 1 chooses standard workpiece known to and thickness identical as measured workpiece material, and the ultrasound for acquiring standard workpiece is returned
Wave signal, the time point of ultrasound echo signal waveform the first two peak value of selection standard workpiece calculate time difference t, and t is as ultrasound
Time of the echo in workpiece upper and lower interface round trip；Because spread speed of the ultrasonic wave in workpiece uniform in material is substantially permanent
It is fixed, the thickness of workpiece is calculated using pulse reflection method, and ultrasound echo signal is calculated in measured workpiece based on following formula
In spread speed:
Wherein, dStandard workpieceIndicate that standard workpiece thickness, c indicate spread speed of the ultrasonic wave in workpiece, dStandard workpiece, t be
Know.
Step 2, ultrasound echo signal waveform setting one wave crest initial position (removal for collected measured workpiece
The influence of transmitted wave), it determines from the position of the maximum value corresponding points after the position, as first wave crest point；One is arranged again
A peak-to-peak minimum range (is provided with peak-to-peak minimum range, peak-to-peak minimum in order to avoid mistake occurs in the identification of second peak point
Distance selects biggish value under the premise of being less than measured workpiece thickness as far as possible), this is added by the position of first wave crest point
The position obtained after a distance determines a maximum value, i.e., the position of second wave crest point；It is obtained by two adjacent peaks point positions
To the time difference t ' of two wave crest points, t ' as ultrasonic echo measured workpiece upper and lower interface round trip time；Surpass simultaneously
The spread speed c of sound echo is obtained by step 1, can then find out measured workpiece thickness value in conjunction with following formula:
Wherein, dMeasured workpieceIndicate that measured workpiece thickness, c indicate spread speed of the ultrasonic wave in workpiece；
Step 3, when mobile probe continuously measures the thickness of T shape workpiece, in the place of abrupt changes in thickness, waveform occur it is larger
Variation, the back wave of previous thickness occur simultaneously with the back wave of the latter thickness, and peak value identification at this time often malfunctions.Needle
To this problem, the method for " gate reservation " is proposed in this step, when it is abrupt changes in thickness that large change, which occurs, for waveform, is enabled
Gate first rest on before position, only measure a thickness value, when waveform tends towards stability, recall the step 2
Second peak value recognizer.Experiment show it is such improvement preferably solve due to abrupt changes in thickness caused by indeterminacy
The problem of.The waveform, which tends towards stability, refers to that the amplitude of first echo of back wave of previous thickness is less than the latter thickness
The back wave of degree；(gate is the pickup section of echo-peak to introduced gate reservation method herein, and system default is known in this step
Maximum value where other gate in section is used as echo-peak, and the time difference of two echo-peaks and the product of the velocity of sound are thick
Degree, therefore the key of thickness measure is the selection of position of strobe), when just there are multiple thickness waveforms, gate is remained stationary,
Only just allow to reselect gate when the amplitude and amplitude change rate of original thickness waveform are met certain condition.
Step 4 obtains thickness-time series chart according to the measurement result of step 3, is modified to thickness measuring result, specifically
Steps are as follows: since n-th thickness, often measuring a thickness, is successively scanned to nearest N number of thickness, and with working as
The thickness of preceding scanning subtracts previous thickness, if difference is more than preset threshold value T1, marks this thickness, scans through N number of thickness
Afterwards, continue to scan backward, if the difference of the serial number i of marked thickness corresponding points and the serial number j of previous marked thickness corresponding points
Less than threshold value T2, then it is assumed that the two thickness and its between all thickness be all abnormal, and it is revised as serial number
The thickness value of i-1.Thus it has carried out second after scanning, has exported first thickness of this N number of thickness；When measurement obtains another
After new thickness, above-mentioned operation is executed again: since second thickness value, the thickness value and preceding one-shot measurement that measure every time
Thickness value make the difference, when difference be greater than threshold value then mark the corresponding serial number of this thickness, when the difference of two neighboring marking serial numbers is small
When threshold value then by two serial numbers and its between all thickness values be revised as the previous thickness value of first marking serial numbers.
Claims (2)
1. a kind of based on the thickness of workpiece detection method for improving peak value identification, which is characterized in that this method includes walking in detail below
It is rapid:
Step 1 chooses standard workpiece known to and thickness identical as measured workpiece material, respectively to measured workpiece and standard workpiece
Two groups of ultrasound echo signals are acquired, the time point of ultrasound echo signal waveform the first two peak value of selection standard workpiece calculates the time
Poor t, t as ultrasonic echo standard workpiece upper and lower interface round trip time；Ultrasound is calculated based on following formula to return
Spread speed of the wave signal in workpiece:
Wherein, dStandard workpieceIndicate that standard workpiece thickness, c indicate spread speed of the ultrasonic wave in workpiece；
Step 2, one wave crest initial position of ultrasound echo signal waveform setting for collected measured workpiece, determine from this
The position of maximum value corresponding points after position, as first wave crest point；One peak-to-peak minimum range is set again, by first
The position of wave crest point determines a maximum value, i.e., the position of second wave crest point plus the position obtained after this distance；By two
A adjacent peaks point position obtains the time difference t ' of two wave crest points, and t ' is round-trip in measured workpiece upper and lower interface as ultrasonic echo
The primary time；The spread speed obtained in spread speed c, that is, step 1 of ultrasonic echo simultaneously, can then find out in conjunction with following formula
Measured workpiece thickness value:
Wherein, dMeasured workpieceIndicate that measured workpiece thickness, c indicate spread speed of the ultrasonic wave in workpiece；
Step 3 proposes the method for gate reservation in this step, when it is abrupt changes in thickness that large change, which occurs, for waveform, enables lock
Door first rest on before position, only measure a thickness value, when waveform tends towards stability, recall the of the step 2
Two peak value recognizers；The waveform, which tends towards stability, refers to that the amplitude of first echo of back wave of previous thickness is small
In the back wave of the latter thickness；
Step 4 obtains thickness-time series chart according to the measurement result of step 3, is modified to thickness measuring result, specific steps
It is as follows: since n-th thickness, often to measure a thickness, nearest N number of thickness is successively scanned, and with currently sweeping
The thickness retouched subtracts previous thickness, if difference is more than preset threshold value T1, marks this thickness, after scanning through N number of thickness, after
It is continuous to scan backward, if the difference of the serial number i of marked thickness corresponding points and the serial number j of previous marked thickness corresponding points are less than threshold
Value T2, then it is assumed that the two thickness and its between all thickness be all abnormal, and it is revised as to the thickness of serial number i-1
Angle value.Thus it has carried out second after scanning, has exported first thickness of this N number of thickness；When measurement obtains another new thickness
After degree, above-mentioned operation is executed again: since second thickness value, the thickness of the thickness value and preceding one-shot measurement that measure every time
Value makes the difference, and then marks the corresponding serial number of this thickness when difference is greater than threshold value, when the difference of two neighboring marking serial numbers is less than threshold value
Shi Ze by two serial numbers and its between all thickness values be revised as the previous thickness value of first marking serial numbers.
2. as described in claim 1 a kind of based on the thickness of workpiece detection method for improving peak value identification, which is characterized in that described
In step 3, when just there are multiple thickness waveforms, gate is remained stationary, only when the amplitude and amplitude change rate of original thickness waveform
Meeting certain condition just allows to reselect gate.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910723328.9A CN110500974B (en) | 2019-08-06 | 2019-08-06 | Workpiece thickness detection method based on improved peak recognition |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910723328.9A CN110500974B (en) | 2019-08-06 | 2019-08-06 | Workpiece thickness detection method based on improved peak recognition |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN110500974A true CN110500974A (en) | 2019-11-26 |
| CN110500974B CN110500974B (en) | 2021-01-05 |
Family
ID=68588030
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910723328.9A Active CN110500974B (en) | 2019-08-06 | 2019-08-06 | Workpiece thickness detection method based on improved peak recognition |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN110500974B (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111486804A (en) * | 2020-06-15 | 2020-08-04 | 东莞职业技术学院 | Signal processing method and measuring method for precision part thickness measurement |
| CN112433217A (en) * | 2020-11-10 | 2021-03-02 | 广州市东儒电子科技有限公司 | Object thickness measuring method, device, system, equipment and medium based on ultrasonic waves |
| CN112684002A (en) * | 2020-11-26 | 2021-04-20 | 北京理工大学 | Method for real-time tracking of continuous variable-thickness workpiece ultrasonic scanning dynamic gate and scanning method |
| CN113739728A (en) * | 2021-08-31 | 2021-12-03 | 华中科技大学 | Electromagnetic ultrasonic echo sound time calculation method and application thereof |
| CN114777696A (en) * | 2022-05-07 | 2022-07-22 | 中国科学院声学研究所 | Ultrasonic thickness measuring method |
| CN116559296A (en) * | 2023-06-26 | 2023-08-08 | 新创碳谷集团有限公司 | Interface determination method, device, equipment and storage medium for ultrasonic detection |
Citations (16)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4033176A (en) * | 1975-07-11 | 1977-07-05 | Standard Oil Company (Indiana) | Pocket-sized, direct-reading ultrasonic thickness gauge |
| DE3135969C2 (en) * | 1981-09-08 | 1983-11-17 | Krautkrämer GmbH, 5000 Köln | Ultrasonic testing method for the detection of imperfections in workpieces and ultrasonic testing device with a diaphragm switch to carry out the method |
| CN2824031Y (en) * | 2005-09-09 | 2006-10-04 | 鞍山长风无损检测设备有限公司 | Reducing thick wall pipe water logging flaw detector |
| CN101587098A (en) * | 2008-05-21 | 2009-11-25 | 山东省科学院激光研究所 | A passage is realized the steel tube ultrasonic inspection method of three kinds of functions simultaneously |
| CN101614533A (en) * | 2008-06-26 | 2009-12-30 | 中国科学院金属研究所 | A kind of energy accurately measuring thickness of ultrathin workpieces method and instrument |
| CN101738089A (en) * | 2010-01-08 | 2010-06-16 | 中冶北方工程技术有限公司 | Device for controlling batch layer thickness of sintering machine based on radar detection technique |
| US7876423B1 (en) * | 2008-06-27 | 2011-01-25 | The United States Of America As Represented By The National Aeronautics And Space Administration | Simultaneous noncontact precision imaging of microstructural and thickness variation in dielectric materials using terahertz energy |
| CN102183582A (en) * | 2011-01-27 | 2011-09-14 | 中国商用飞机有限责任公司 | Ultrasonic nondestructive testing device and method |
| CN103003103A (en) * | 2010-07-20 | 2013-03-27 | 罗伯特·博世有限公司 | Vehicle trim comprising a hidden ultrasound sensor assembly and method for integrating ultrasonic transducers into vehicle trims |
| CN104048628A (en) * | 2014-06-16 | 2014-09-17 | 山东中科普锐检测技术有限公司 | Method for accurately detecting thickness through ultrasonic wave equivalent peak value and device using method |
| CN104101651A (en) * | 2014-07-31 | 2014-10-15 | 中南大学 | Grain size nondestructive evaluation method based on haar wavelet |
| CN106289124A (en) * | 2016-08-08 | 2017-01-04 | 华中科技大学无锡研究院 | A kind of method of following echo in real time of ultrasonic thickness measurement gate |
| CN106441177A (en) * | 2016-11-03 | 2017-02-22 | 北京声华兴业科技有限公司 | A method and device for measuring the thickness of a workpiece in a manner of being capable of passing through coating |
| CN108267201A (en) * | 2016-12-30 | 2018-07-10 | 上海云统信息科技有限公司 | A kind of belt transports the metering method of bulk cargo |
| WO2018234472A1 (en) * | 2017-06-21 | 2018-12-27 | Charité - Universitätsmedizin Berlin | System, method, and computer program product for determining cortical bone characteristics |
| CN208950571U (en) * | 2018-09-12 | 2019-06-07 | 中国石油化工股份有限公司 | A kind of horizontal well sieve tube crosses oil pipe detection device |
-
2019
- 2019-08-06 CN CN201910723328.9A patent/CN110500974B/en active Active
Patent Citations (16)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4033176A (en) * | 1975-07-11 | 1977-07-05 | Standard Oil Company (Indiana) | Pocket-sized, direct-reading ultrasonic thickness gauge |
| DE3135969C2 (en) * | 1981-09-08 | 1983-11-17 | Krautkrämer GmbH, 5000 Köln | Ultrasonic testing method for the detection of imperfections in workpieces and ultrasonic testing device with a diaphragm switch to carry out the method |
| CN2824031Y (en) * | 2005-09-09 | 2006-10-04 | 鞍山长风无损检测设备有限公司 | Reducing thick wall pipe water logging flaw detector |
| CN101587098A (en) * | 2008-05-21 | 2009-11-25 | 山东省科学院激光研究所 | A passage is realized the steel tube ultrasonic inspection method of three kinds of functions simultaneously |
| CN101614533A (en) * | 2008-06-26 | 2009-12-30 | 中国科学院金属研究所 | A kind of energy accurately measuring thickness of ultrathin workpieces method and instrument |
| US7876423B1 (en) * | 2008-06-27 | 2011-01-25 | The United States Of America As Represented By The National Aeronautics And Space Administration | Simultaneous noncontact precision imaging of microstructural and thickness variation in dielectric materials using terahertz energy |
| CN101738089A (en) * | 2010-01-08 | 2010-06-16 | 中冶北方工程技术有限公司 | Device for controlling batch layer thickness of sintering machine based on radar detection technique |
| CN103003103A (en) * | 2010-07-20 | 2013-03-27 | 罗伯特·博世有限公司 | Vehicle trim comprising a hidden ultrasound sensor assembly and method for integrating ultrasonic transducers into vehicle trims |
| CN102183582A (en) * | 2011-01-27 | 2011-09-14 | 中国商用飞机有限责任公司 | Ultrasonic nondestructive testing device and method |
| CN104048628A (en) * | 2014-06-16 | 2014-09-17 | 山东中科普锐检测技术有限公司 | Method for accurately detecting thickness through ultrasonic wave equivalent peak value and device using method |
| CN104101651A (en) * | 2014-07-31 | 2014-10-15 | 中南大学 | Grain size nondestructive evaluation method based on haar wavelet |
| CN106289124A (en) * | 2016-08-08 | 2017-01-04 | 华中科技大学无锡研究院 | A kind of method of following echo in real time of ultrasonic thickness measurement gate |
| CN106441177A (en) * | 2016-11-03 | 2017-02-22 | 北京声华兴业科技有限公司 | A method and device for measuring the thickness of a workpiece in a manner of being capable of passing through coating |
| CN108267201A (en) * | 2016-12-30 | 2018-07-10 | 上海云统信息科技有限公司 | A kind of belt transports the metering method of bulk cargo |
| WO2018234472A1 (en) * | 2017-06-21 | 2018-12-27 | Charité - Universitätsmedizin Berlin | System, method, and computer program product for determining cortical bone characteristics |
| CN208950571U (en) * | 2018-09-12 | 2019-06-07 | 中国石油化工股份有限公司 | A kind of horizontal well sieve tube crosses oil pipe detection device |
Non-Patent Citations (4)
| Title |
|---|
| B. KENNEDY AND R KLINE: "BULK WAVE CHARACTERIZATION OF LAMINATED COMPOSITES", 《REVIEW OF PROGRESS IN QUANTITATIVE NONDESTRUCTIVE EVALUATION》 * |
| 吴玄等: "变壁厚回转体零件超声检测动态闸门技术研究", 《中国测试》 * |
| 张婷等: "变厚度碳纤维/环氧树脂基复合材料层压板的多电子闸门C扫成像", 《无损检测》 * |
| 彭春等: "基于时间融合的波形方式高精度超声测厚", 《用用声学》 * |
Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111486804A (en) * | 2020-06-15 | 2020-08-04 | 东莞职业技术学院 | Signal processing method and measuring method for precision part thickness measurement |
| CN111486804B (en) * | 2020-06-15 | 2021-10-08 | 东莞职业技术学院 | Signal processing method and measuring method for precision part thickness measurement |
| CN112433217A (en) * | 2020-11-10 | 2021-03-02 | 广州市东儒电子科技有限公司 | Object thickness measuring method, device, system, equipment and medium based on ultrasonic waves |
| CN112433217B (en) * | 2020-11-10 | 2024-05-14 | 广州市东儒电子科技有限公司 | Object thickness measuring method, device, system, equipment and medium based on ultrasonic wave |
| CN112684002A (en) * | 2020-11-26 | 2021-04-20 | 北京理工大学 | Method for real-time tracking of continuous variable-thickness workpiece ultrasonic scanning dynamic gate and scanning method |
| CN112684002B (en) * | 2020-11-26 | 2021-12-14 | 北京理工大学 | Continuous variable-thickness workpiece ultrasonic scanning method |
| CN113739728A (en) * | 2021-08-31 | 2021-12-03 | 华中科技大学 | Electromagnetic ultrasonic echo sound time calculation method and application thereof |
| CN114777696A (en) * | 2022-05-07 | 2022-07-22 | 中国科学院声学研究所 | Ultrasonic thickness measuring method |
| CN114777696B (en) * | 2022-05-07 | 2023-08-11 | 中国科学院声学研究所 | Ultrasonic thickness measuring method |
| CN116559296A (en) * | 2023-06-26 | 2023-08-08 | 新创碳谷集团有限公司 | Interface determination method, device, equipment and storage medium for ultrasonic detection |
| CN116559296B (en) * | 2023-06-26 | 2023-11-28 | 新创碳谷集团有限公司 | Interface determination method, device, equipment and storage medium for ultrasonic detection |
Also Published As
| Publication number | Publication date |
|---|---|
| CN110500974B (en) | 2021-01-05 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN110500974A (en) | Based on the thickness of workpiece detection method for improving peak value identification | |
| US8276444B2 (en) | Method for ascertaining and monitoring fill level of a medium in a container using a travel time, measuring method | |
| CN102809610A (en) | Phased array ultrasonic testing method based on improved dynamic depth focusing | |
| EP2982971B1 (en) | Ultrasonic flaw-detection method and device by setting of gates | |
| US6556511B1 (en) | Method of locking onto and tracking a target | |
| CN114144120B (en) | Ultrasonic diagnostic apparatus and control method for ultrasonic diagnostic apparatus | |
| JP2010119481A (en) | Ultrasonic diagnostic apparatus | |
| KR20220004184A (en) | Ultrasonic flaw detection method, ultrasonic flaw detection device, steel manufacturing equipment heat, steel manufacturing method, and steel quality assurance method | |
| CN101672826A (en) | Construction method of C-scan phase reversal image of ultrasonic scanning microscope | |
| US20180194056A1 (en) | Print bed levelling system and methods for additive manufacturing | |
| JP6713858B2 (en) | Machined hole position measuring device and machined hole position measuring method | |
| CN104569950B (en) | Sea-surface target clustering method based on relative power and phase linearity | |
| CN111103361B (en) | Self-adaptive defect automatic measurement algorithm for ultrasonic phased array image | |
| CN112698267B (en) | Interference source testing and positioning method | |
| CN113376261A (en) | Method for correcting stress wave travel time of low-strain detection of foundation pile | |
| JP2656355B2 (en) | Ultrasonic flaw detection method and apparatus | |
| JP3514553B2 (en) | Ultrasound diagnostic equipment | |
| CN111047547B (en) | Combined defect quantification method based on multi-view TFM | |
| CN115629067A (en) | Hopkinson pressure bar stress wave head determination method based on image analysis | |
| CN100346160C (en) | Method of real time tracking bottom echo for ultrasonic crank detection gate | |
| JPH04329938A (en) | Probe system for measuring elastic modulus of blood vessel | |
| CN111648206A (en) | Real-time paving auxiliary monitoring system for asphalt pavement | |
| US11259779B2 (en) | Ultrasound body tissue detecting device, ultrasound body tissue detecting method, and ultrasound body tissue detecting program | |
| CN110806443A (en) | Steel plate crack evaluation method based on self-organizing statistical model | |
| JP7362213B2 (en) | Buried anchor determination device and buried anchor determination method |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |