WO2015032231A1 - 一种磁致伸缩导波检测信号处理方法及装置 - Google Patents
一种磁致伸缩导波检测信号处理方法及装置 Download PDFInfo
- Publication number
- WO2015032231A1 WO2015032231A1 PCT/CN2014/079703 CN2014079703W WO2015032231A1 WO 2015032231 A1 WO2015032231 A1 WO 2015032231A1 CN 2014079703 W CN2014079703 W CN 2014079703W WO 2015032231 A1 WO2015032231 A1 WO 2015032231A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- signal
- matrix
- guided wave
- energy
- analysis
- Prior art date
Links
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N29/00—Investigating or analysing materials by the use of ultrasonic, sonic or infrasonic waves; Visualisation of the interior of objects by transmitting ultrasonic or sonic waves through the object
- G01N29/22—Details, e.g. general constructional or apparatus details
- G01N29/24—Probes
- G01N29/2412—Probes using the magnetostrictive properties of the material to be examined, e.g. electromagnetic acoustic transducers [EMAT]
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R21/00—Arrangements for measuring electric power or power factor
- G01R21/133—Arrangements for measuring electric power or power factor by using digital technique
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M99/00—Subject matter not provided for in other groups of this subclass
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N29/00—Investigating or analysing materials by the use of ultrasonic, sonic or infrasonic waves; Visualisation of the interior of objects by transmitting ultrasonic or sonic waves through the object
- G01N29/36—Detecting the response signal, e.g. electronic circuits specially adapted therefor
- G01N29/42—Detecting the response signal, e.g. electronic circuits specially adapted therefor by frequency filtering or by tuning to resonant frequency
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N29/00—Investigating or analysing materials by the use of ultrasonic, sonic or infrasonic waves; Visualisation of the interior of objects by transmitting ultrasonic or sonic waves through the object
- G01N29/44—Processing the detected response signal, e.g. electronic circuits specially adapted therefor
- G01N29/4463—Signal correction, e.g. distance amplitude correction [DAC], distance gain size [DGS], noise filtering
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N29/00—Investigating or analysing materials by the use of ultrasonic, sonic or infrasonic waves; Visualisation of the interior of objects by transmitting ultrasonic or sonic waves through the object
- G01N29/44—Processing the detected response signal, e.g. electronic circuits specially adapted therefor
- G01N29/4472—Mathematical theories or simulation
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N29/00—Investigating or analysing materials by the use of ultrasonic, sonic or infrasonic waves; Visualisation of the interior of objects by transmitting ultrasonic or sonic waves through the object
- G01N29/44—Processing the detected response signal, e.g. electronic circuits specially adapted therefor
- G01N29/52—Processing the detected response signal, e.g. electronic circuits specially adapted therefor using inversion methods other that spectral analysis, e.g. conjugated gradient inversion
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N2291/00—Indexing codes associated with group G01N29/00
- G01N2291/04—Wave modes and trajectories
- G01N2291/042—Wave modes
- G01N2291/0425—Parallel to the surface, e.g. creep waves
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N27/00—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means
- G01N27/72—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means by investigating magnetic variables
- G01N27/82—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means by investigating magnetic variables for investigating the presence of flaws
Definitions
- the invention belongs to the field of non-destructive testing, and particularly relates to a method and a device for processing a magnetostrictive guided wave detecting signal.
- An invention patent disclosed in the publication No. CN101393173A discloses a magnetostrictive guided wave detecting system for a stay cable anchoring zone; and an invention patent disclosed in CN101451976A discloses a method for determining a working point in magnetostrictive guided wave detection;
- the invention patent No. CN101710103A discloses a magnetostrictive guided wave single direction detecting method; the invention patent application with the publication number CN102520057A discloses a magnetostrictive guided wave sensor for detecting inside a heat exchange tube and a detecting method thereof.
- the invention patent publication CN101126743A discloses a method for improving the signal-to-noise ratio of a magnetostrictive guided wave detection signal, but requires a defect-free sample to acquire a standard signal, which is inconvenient in field detection.
- the present invention provides a method and apparatus for improving a magnetostrictive guided wave detection signal, which obtains a magnetically induced guided wave signal energy distribution by suppressing background noise at a certain threshold. It reduces the influence of external interference on the signal. This method does not require standard samples, which greatly facilitates field application.
- the technical solution adopted by the present invention to solve the technical problem thereof is to provide a magnetostrictive guided wave detecting signal processing method for improving the accuracy of magnetostrictive guided wave detection, and the method includes the following steps: 51. Perform interception on the original magnetostrictive guided wave detection signal, and obtain an analysis signal u(n), n N, N is the length of the analysis signal u(n);
- the method further includes the following steps:
- step S8 drawing an energy distribution map z(n) according to the energy of the signal processed by the selected analysis region calculated in step S8; S10. Determine whether the member to be tested has defects according to the distortion of the energy distribution map z(n).
- the present invention further provides a magnetostrictive guided wave detecting signal processing device for improving the accuracy of magnetostrictive guided wave detection, the device comprising:
- a signal intercepting unit configured to intercept the original magnetostrictive guided wave signal, and obtain an analysis signal u(n), n N, N is a length of the analysis signal u(n);
- a band pass filter connected to the signal intercepting unit, for band-pass filtering the analysis signal u(n) to obtain a signal x(n);
- a signal processing unit coupled to the band pass filter, for denoising the signal x(n) and calculating a denoised energy distribution thereof;
- the eigenvalues less than the median in the matrix ⁇ are zeroed to obtain the matrix C, and the inverse singular value transformation is performed on the matrix C to obtain the matrix 0,
- the device further includes a defect detecting unit connected to the signal processing unit, wherein the defect detecting unit is configured to process the selected analyzed region according to the calculation
- the energy of the signal is used to map the energy distribution map z (n), and according to the distortion of the energy distribution map z (n), it is judged whether the member to be tested has defects.
- the principle of the present invention is that when a magnetostrictive guided wave propagates at a group velocity in a member, due to the presence of defects and other irregular structures, the elastic wave has changes in reflection, refraction, and transmission, thereby causing a corresponding position signal waveform and propagation energy.
- the elastic wave has changes in reflection, refraction, and transmission, thereby causing a corresponding position signal waveform and propagation energy.
- it is required to acquire a standard signal without a defect, and then differentially process the signal to be tested and the standard signal without defects, which is disadvantageous for on-site detection.
- the energy distribution of the magnetostrictive guided wave signal is obtained by suppressing the background noise at a certain threshold value, thereby reducing the influence of external interference on the signal, and enhancing the sensitivity of the magnetostrictive guided wave signal detection by improving the signal to noise ratio.
- This method does not require standard samples, which greatly facilitates field application.
- FIG. 1 is a flow chart of a method for processing a magnetostrictive guided wave detection signal of the present invention
- FIG. 2 is a schematic structural view of a magnetostrictive guided wave detecting signal processing apparatus of the present invention
- FIG. 3 is an experimental layout diagram of a pipeline for detecting a defective standard in an embodiment of the present invention
- FIG. 4 is an outer diameter of a specific embodiment of the present invention.
- Figure 5 is an analysis signal diagram obtained by intercepting a defective pipeline detection signal
- FIG. 6 is a diagram showing the result of the defective tube analysis signal processed by the method of the present invention
- FIG. 7 is an experimental layout diagram of the pipeline for detecting a defect-free standard in a specific embodiment
- Figure 8 is a diagram showing the original signal obtained on a non-defective pipe having an outer diameter of 25 mm and an inner diameter of 20 mm;
- Figure 9 is an analysis signal diagram obtained by intercepting the detection signal of the defect-free pipeline
- Figure 10 is a graph showing the results of a defect-free tube analysis signal processed by the method of the present invention.
- Fig. 1 is a flow chart showing a method for improving the accuracy of magnetostrictive guided wave detection according to an embodiment of the present invention. As shown in FIG. 1, the method for enhancing the magnetostrictive guided wave detection signal of the present invention includes the following steps:
- the magnetostrictive guided wave detecting signal processing apparatus of the present invention comprises a signal intercepting unit 1, a band pass filter 2 connected to the signal intercepting unit 1, and a signal processing unit 3 connected to the band pass filter 2, and A defect detecting unit connected to the signal processing unit 3.
- the signal intercepting unit 1 is configured to intercept the original magnetostrictive guided wave signal, obtain an analysis signal u(n), n N, N is the length of the analysis signal u(n); the band pass filter 2 is used Band-pass filtering the analysis signal u(n) to obtain a signal x(n); the signal processing unit 3 is for denoising the signal x(n) and calculating the denoised energy distribution, wherein:
- the signal y (i), y (i+l), ⁇ , y (i+M-l) is restored from the matrix D;
- the defect detecting unit 4 is configured to draw an energy distribution map z (n) according to the calculated energy of the signal of the selected analysis region, and determine whether the component to be tested is based on the distortion of the energy distribution map z (n) defect.
- the member to be tested is a defective heat exchange tube with an outer diameter of 25 mm and an inner diameter of 20 mm and a tube length of 2800 mm.
- the excitation coil is 100 mm from the left end of the tube
- the receiving coil is 600 mm from the left end of the tube
- a diameter is 2000 mm from the left end of the tube.
- the through hole defect of ⁇ 5 has an excitation frequency of 90 kHz, a sampling frequency of 2000 kHz, and a guided wave velocity of about 3200 m/s.
- the original signal obtained on the defective heat exchange tube is as shown in Fig. 4, which includes the electromagnetic pulse signal M, the signal S passing through the receiving sensor for the first time, and the first end reflection signal S1.
- FIG. 7 is the experimental layout of the defect-free tube.
- Figure 8 shows the original signal obtained from the defect-free tube experiment. The signal between S and S1 in Figure 8 is taken as the analysis signal of the defect-free tube.
- Figure 9 shows the analysis signal of the defect-free tube.
- Figure 10 shows the energy distribution of the non-defective tube analysis signal after the method is processed. There is no obvious distortion in the similar defect tube energy distribution diagram (Fig. 6), so the method can be proved to be effective and reliable.
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Immunology (AREA)
- Pathology (AREA)
- Life Sciences & Earth Sciences (AREA)
- Chemical & Material Sciences (AREA)
- Analytical Chemistry (AREA)
- Biochemistry (AREA)
- General Health & Medical Sciences (AREA)
- Health & Medical Sciences (AREA)
- Engineering & Computer Science (AREA)
- Signal Processing (AREA)
- Algebra (AREA)
- Mathematical Analysis (AREA)
- Mathematical Optimization (AREA)
- Mathematical Physics (AREA)
- Pure & Applied Mathematics (AREA)
- Electromagnetism (AREA)
- Power Engineering (AREA)
- Spectroscopy & Molecular Physics (AREA)
- Investigating Or Analyzing Materials By The Use Of Magnetic Means (AREA)
- Investigating Or Analyzing Materials By The Use Of Ultrasonic Waves (AREA)
Abstract
Description
Claims
Priority Applications (5)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2015535981A JP5994029B2 (ja) | 2013-12-24 | 2014-06-12 | 一種の磁歪導波検定信号処理方法及び装置 |
EP14841923.7A EP3088882B1 (en) | 2013-12-24 | 2014-06-12 | Magnetostrictive waveguide detection signal processing method and device |
PCT/CN2014/079703 WO2015032231A1 (zh) | 2013-12-24 | 2014-06-12 | 一种磁致伸缩导波检测信号处理方法及装置 |
US14/538,787 US20150177294A1 (en) | 2013-12-24 | 2014-11-11 | Method and device for processing magnetostrictive guided wave detection signals |
US15/687,536 US20170356881A1 (en) | 2013-12-24 | 2017-08-27 | Method and device for processing magnetostrictive guided wave detection signals |
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN201310723746.0 | 2013-12-24 | ||
CN201310723746.0A CN103743810B (zh) | 2013-12-24 | 2013-12-24 | 一种磁致伸缩导波检测信号处理方法及装置 |
PCT/CN2014/079703 WO2015032231A1 (zh) | 2013-12-24 | 2014-06-12 | 一种磁致伸缩导波检测信号处理方法及装置 |
Related Child Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US14/538,787 Continuation-In-Part US20150177294A1 (en) | 2013-12-24 | 2014-11-11 | Method and device for processing magnetostrictive guided wave detection signals |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2015032231A1 true WO2015032231A1 (zh) | 2015-03-12 |
Family
ID=50500848
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/CN2014/079703 WO2015032231A1 (zh) | 2013-12-24 | 2014-06-12 | 一种磁致伸缩导波检测信号处理方法及装置 |
Country Status (5)
Country | Link |
---|---|
US (1) | US20150177294A1 (zh) |
EP (1) | EP3088882B1 (zh) |
JP (1) | JP5994029B2 (zh) |
CN (1) | CN103743810B (zh) |
WO (1) | WO2015032231A1 (zh) |
Families Citing this family (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN104764487B (zh) * | 2015-03-05 | 2017-04-12 | 浙江大学 | 一种基于gprs的风电齿轮箱远程监测诊断方法 |
CN110568084B (zh) * | 2019-09-19 | 2020-07-24 | 哈尔滨工业大学 | 一种适用于导波换能器阵列的低信噪比导波信号达到时刻的提取方法 |
CN112240910B (zh) * | 2020-09-16 | 2021-08-10 | 华中科技大学 | 一种磁致伸缩导波拓扑信号处理方法及无损检测方法 |
Citations (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US6497151B1 (en) * | 1999-12-20 | 2002-12-24 | U.S. Pipe & Foundry Company | Non-destructive testing method and apparatus to determine microstructure of ferrous metal objects |
CN101126743A (zh) | 2007-09-13 | 2008-02-20 | 华中科技大学 | 一种磁致伸缩导波无损检测方法 |
CN101393173A (zh) | 2008-08-29 | 2009-03-25 | 华中科技大学 | 一种斜拉索锚固区磁致伸缩导波检测系统 |
CN101451976A (zh) | 2008-08-29 | 2009-06-10 | 华中科技大学 | 一种确定磁致伸缩导波检测工作点的方法 |
CN101710103A (zh) | 2009-11-27 | 2010-05-19 | 华中科技大学 | 磁致伸缩导波单方向检测方法 |
US20120119732A1 (en) * | 2010-11-17 | 2012-05-17 | Fbs, Inc. | Magnetostrictive sensor array for active or synthetic phased-array focusing of guided waves |
CN102520057A (zh) | 2011-12-12 | 2012-06-27 | 华中科技大学 | 用于换热管内检测的磁致伸缩导波传感器及其检测方法 |
CN103424471A (zh) * | 2013-08-14 | 2013-12-04 | 哈尔滨工业大学深圳研究生院 | 一种基于磁致伸缩导波的检测装置及检测方法 |
Family Cites Families (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP4228104B2 (ja) * | 2002-05-01 | 2009-02-25 | 独立行政法人理化学研究所 | 雑音除去システムおよび雑音除去方法 |
JP3777576B2 (ja) * | 2002-08-27 | 2006-05-24 | 学校法人金沢工業大学 | 位置推定方法および装置 |
JP4494089B2 (ja) * | 2004-06-02 | 2010-06-30 | 富士フイルム株式会社 | 超音波送受信装置 |
KR100677920B1 (ko) * | 2005-10-20 | 2007-02-05 | 재단법인서울대학교산학협력재단 | 자기변형 효과를 이용하여 봉이나 축, 또는 배관 부재에비틀림파를 발생 및 측정하는 방법, 그 방법을 이용한자기변형 트랜스듀서, 및 구조 진단 장치 |
CN102520065A (zh) * | 2011-12-14 | 2012-06-27 | 杭州浙大精益机电技术工程有限公司 | 磁致伸缩导波检测仪 |
FR2993362B1 (fr) * | 2012-07-12 | 2016-07-01 | Commissariat Energie Atomique | Procede de traitement de signaux issus d'une acquisition par sondage ultrasonore, programme d'ordinateur et dispositif de sondage a ultrasons correspondants |
CN103278558A (zh) * | 2012-12-10 | 2013-09-04 | 重庆交通大学 | 一种基于磁致伸缩的锚固系统无损检测装置及方法 |
CN203241387U (zh) * | 2013-05-20 | 2013-10-16 | 浙江宁波甬台温高速公路有限公司 | 用于大桥缆索的磁致伸缩导波检测装置 |
-
2013
- 2013-12-24 CN CN201310723746.0A patent/CN103743810B/zh not_active Expired - Fee Related
-
2014
- 2014-06-12 EP EP14841923.7A patent/EP3088882B1/en not_active Not-in-force
- 2014-06-12 JP JP2015535981A patent/JP5994029B2/ja not_active Expired - Fee Related
- 2014-06-12 WO PCT/CN2014/079703 patent/WO2015032231A1/zh active Application Filing
- 2014-11-11 US US14/538,787 patent/US20150177294A1/en not_active Abandoned
Patent Citations (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US6497151B1 (en) * | 1999-12-20 | 2002-12-24 | U.S. Pipe & Foundry Company | Non-destructive testing method and apparatus to determine microstructure of ferrous metal objects |
CN101126743A (zh) | 2007-09-13 | 2008-02-20 | 华中科技大学 | 一种磁致伸缩导波无损检测方法 |
CN101393173A (zh) | 2008-08-29 | 2009-03-25 | 华中科技大学 | 一种斜拉索锚固区磁致伸缩导波检测系统 |
CN101451976A (zh) | 2008-08-29 | 2009-06-10 | 华中科技大学 | 一种确定磁致伸缩导波检测工作点的方法 |
CN101710103A (zh) | 2009-11-27 | 2010-05-19 | 华中科技大学 | 磁致伸缩导波单方向检测方法 |
US20120119732A1 (en) * | 2010-11-17 | 2012-05-17 | Fbs, Inc. | Magnetostrictive sensor array for active or synthetic phased-array focusing of guided waves |
CN102520057A (zh) | 2011-12-12 | 2012-06-27 | 华中科技大学 | 用于换热管内检测的磁致伸缩导波传感器及其检测方法 |
CN103424471A (zh) * | 2013-08-14 | 2013-12-04 | 哈尔滨工业大学深圳研究生院 | 一种基于磁致伸缩导波的检测装置及检测方法 |
Non-Patent Citations (1)
Title |
---|
See also references of EP3088882A4 |
Also Published As
Publication number | Publication date |
---|---|
JP5994029B2 (ja) | 2016-09-21 |
US20150177294A1 (en) | 2015-06-25 |
CN103743810B (zh) | 2016-05-25 |
EP3088882A4 (en) | 2017-08-02 |
EP3088882A1 (en) | 2016-11-02 |
CN103743810A (zh) | 2014-04-23 |
EP3088882B1 (en) | 2021-07-21 |
JP2015534647A (ja) | 2015-12-03 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
Shi et al. | Non-destructive testing of full-length bonded rock bolts based on HHT signal analysis | |
CN103217478B (zh) | 用于复合材料板状结构的无参考损伤识别方法 | |
CN101571513A (zh) | 用于复合材料层合板质量评定的超声导波检测装置 | |
CN104833720B (zh) | 单一线圈电磁谐振检测金属管道损伤的方法 | |
CN104181234B (zh) | 一种基于多重信号处理技术的无损检测方法 | |
CN108152362B (zh) | 一种基于伪随机序列的磁致伸缩检测钢结构缺陷的方法 | |
WO2015032231A1 (zh) | 一种磁致伸缩导波检测信号处理方法及装置 | |
CN109632958A (zh) | 一种考虑裂纹方位的Lamb波损伤检测方法 | |
Sun et al. | A performance improved ACFM-TMR detection system with tradeoff denoising algorithm | |
CN109212019A (zh) | 一种远场涡流和磁致伸缩导波混合传感器及其检测方法 | |
Yang et al. | Development of a biaxial grid-coil-type electromagnetic acoustic transducer | |
CN104897578A (zh) | 基于声表面波探测各向异性材料表层杨氏模量的检测方法 | |
CN107576726B (zh) | 用于导波检测的损伤判别和损伤扩展识别方法 | |
Cui et al. | A robust indicator based on singular value decomposition for flaw feature detection from noisy ultrasonic signals | |
US20170356881A1 (en) | Method and device for processing magnetostrictive guided wave detection signals | |
CN105004795A (zh) | 伪缺陷信号识别及利用其提高管道无损检测精度的方法 | |
CN110702800A (zh) | 基于非线性超声异侧延时混频信号的微裂缝定位系统及方法 | |
CN113466330A (zh) | 一种用于涡流探伤过程的缺陷类型识别方法 | |
Wang et al. | An improved cross-correlation algorithm based on wavelet transform and energy feature extraction for pipeline leak detection | |
CN104132995A (zh) | 一种基于解卷积技术的超声无损检测方法 | |
Zhang et al. | Impact identification using a passive imaging method | |
Tao et al. | Research on a recognition algorithm for offshore-pipeline defects during magnetic-flux inspection | |
CN110068609A (zh) | 一种漏磁粗检结合超声精测复合型承压设备内部探伤系统 | |
She et al. | Simultaneous measurements of metal plate thickness and defect depth using low frequency sweeping eddy current testing | |
Nuoke et al. | Research on damage imaging accuracy of the guided wave |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
ENP | Entry into the national phase |
Ref document number: 2015535981 Country of ref document: JP Kind code of ref document: A |
|
REEP | Request for entry into the european phase |
Ref document number: 2014841923 Country of ref document: EP |
|
WWE | Wipo information: entry into national phase |
Ref document number: 2014841923 Country of ref document: EP |
|
121 | Ep: the epo has been informed by wipo that ep was designated in this application |
Ref document number: 14841923 Country of ref document: EP Kind code of ref document: A1 |
|
NENP | Non-entry into the national phase |
Ref country code: DE |