CN108169323A - A kind of processing method of polymorphic structure workpiece eddy current signal - Google Patents
A kind of processing method of polymorphic structure workpiece eddy current signal Download PDFInfo
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- CN108169323A CN108169323A CN201711458351.7A CN201711458351A CN108169323A CN 108169323 A CN108169323 A CN 108169323A CN 201711458351 A CN201711458351 A CN 201711458351A CN 108169323 A CN108169323 A CN 108169323A
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- 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
- G01N27/90—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means by investigating magnetic variables for investigating the presence of flaws using eddy currents
- G01N27/9046—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means by investigating magnetic variables for investigating the presence of flaws using eddy currents by analysing electrical signals
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Abstract
The invention discloses a kind of processing methods of polymorphic structure workpiece eddy current signal, and analysis method is compared using standard workpiece and subtracting each other for the eddy current testing signal figure of the scanning overall process of examined workpiece, realize the EDDY CURRENT of abnormal complex workpiece quality.
Description
Technical field
The present invention relates to a kind of lossless detection method, more particularly to a kind of processing side of polymorphic structure workpiece eddy current signal
Method.
Background technology
Eddy detection technology is one of common quality of materials detection means in industrial production, has accuracy of detection height, inspection
The advantages of degree of testing the speed is fast.But for complicated special-shaped workpiece, due to workpiece surface irregular structure, using through mode routine
Eddy current probe detects or makees surface scanning with dot type probe, and what is obtained is rambling eddy current signal, is extremely difficult to detection mesh
's.
Invention content
It is an object of the invention to overcome the deficiency of the prior art, using signal contrast analysis and processing method, abnormity is realized
The EDDY CURRENT of complex part quality.
The technical solution adopted by the present invention to solve the technical problems is：A kind of processing of polymorphic structure workpiece eddy current signal
Method, it is characterised in that：Include the following steps,
A. Eddy Current Testing Transducer carries out scanning inspection using detection mode, detection parameters and the Scanning speed of setting to standard workpiece
It surveys, eddy current testing instrument record preserves the eddy current testing signal figure of standard workpiece scanning overall process；The standard workpiece is material, knot
Structure is identical with examined workpiece and workpiece without mass defect；
B. Eddy Current Testing Transducer using the detection mode identical with step a, detection parameters and Scanning speed to examined workpiece into
Row scanning detects, and eddy current testing instrument record preserves the eddy current testing signal figure of examined workpiece scanning overall process；
C. the standard work that will be obtained in the eddy current testing signal figure of the examined workpiece scanning overall process obtained in step b and step a
The eddy current testing signal figure of part scanning overall process carries out subtracting each other comparison processing analysis；Work is detected when subtracting each other comparison processing analysis result
The eddy current testing signal figure of part scanning overall process is identical with the eddy current testing signal figure of the scanning overall process of standard workpiece, then
Judge that examined workpiece quality is identical with standard workpiece；The vortex for handling analysis result examined workpiece scanning overall process is compared when subtracting each other
When detecting variant between signal graph and the eddy current testing signal figure of standard workpiece scanning overall process, then examined workpiece quality is judged
Different from standard workpiece, there are abnormal qualities.
Further, after step a, step b, step c, examined workpiece scanning is indicated by Data Analysis Software calculating
The time point of signal difference on the eddy current testing signal figure of overall process, according to set in step a detection mode, detection parameters and
Scanning speed, inversion reckoning go out the position of examined workpiece abnormal quality.
Further using big data analysis method, multiple standard workpieces are detected, show that standard workpiece scanning is complete
The standard scores Butut of the eddy current testing signal of process, then by the eddy current testing signal figure of the scanning overall process of examined workpiece and mark
The standard scores Butut of the eddy current testing signal of quasi- workpiece scanning overall process is compared, if there is point beyond standard scores Butut
Cloth range then judges that there are abnormal qualities for the examined workpiece.
The invention has the advantages that a kind of processing method of polymorphic structure workpiece eddy current signal, using standard workpiece with
The eddy current testing signal figure of the scanning overall process of examined workpiece subtracts each other comparison analysis method, realizes abnormal complex workpiece quality
EDDY CURRENT.
The present invention is described in further detail with reference to embodiments, but a kind of polymorphic structure workpiece vortex of the present invention
The processing method of signal is not limited to embodiment.
Description of the drawings
The present invention is further described for middle embodiment below in conjunction with the accompanying drawings.
Fig. 1 is the eddy current detection method schematic diagram of the standard workpiece scanning overall process of the embodiment of the present invention.
Fig. 2 is the eddy current detection method schematic diagram of the examined workpiece scanning overall process of the embodiment of the present invention.
Fig. 3 is the examined workpiece of the embodiment of the present invention and the eddy current testing signal of standard workpiece scanning overall process subtracts each other ratio
To handling analysis method schematic diagram.
In figure, A. standard workpieces, B. examined workpieces, the eddy current testing signal figure of EA. standard workpiece scanning overall processes, EB.
The eddy current testing signal figure of examined workpiece scanning overall process.
Specific embodiment
Embodiment, as shown in Figure 1, Figure 2, Figure 3 shows, a kind of processing method of polymorphic structure workpiece eddy current signal, feature exist
In：Include the following steps,
A. Eddy Current Testing Transducer carries out scanning using detection mode, detection parameters and the Scanning speed of setting to standard workpiece A
Detection, eddy current testing instrument record preserve the eddy current testing signal figure EA of standard workpiece A scanning overall processes；The standard workpiece A is
Material, structure be identical with examined workpiece B and workpiece without mass defect；
B. Eddy Current Testing Transducer using the detection mode identical with step a, detection parameters and Scanning speed to examined workpiece B into
Row scanning detects, and eddy current testing instrument record preserves the eddy current testing signal figure EB of examined workpiece B scanning overall processes；
C. the standard that will be obtained in the eddy current testing signal figure EB and step a of the examined workpiece B scanning overall processes that are obtained in step b
The eddy current testing signal figure EA of workpiece A scanning overall processes carries out subtracting each other comparison processing analysis；Processing analysis result is compared when subtracting each other
The eddy current testing signal figure of the scanning overall process of the eddy current testing signal figure EB and standard workpiece A of examined workpiece B scanning overall processes
EA is identical, then judges that examined workpiece B mass is identical with standard workpiece A；Processing analysis result examined workpiece B is compared when subtracting each other
It is variant between the eddy current testing signal figure EB of scanning overall process and the eddy current testing signal figure EA of standard workpiece A scanning overall processes
When, then judge that examined workpiece B mass is different from standard workpiece A, there are abnormal qualities.
Further, after step a, step b, step c, examined workpiece B is indicated by Data Analysis Software calculating and is swept
The time point of signal difference on the eddy current testing signal figure EB of overall process is looked into, according to detection mode, the detection ginseng set in step a
Number and Scanning speed, inversion reckoning go out the position of examined workpiece B abnormal qualities.
Further using big data analysis method, multiple standard workpiece A are detected, obtain standard workpiece A scannings
The standard scores Butut of the eddy current testing signal of overall process, then by the eddy current testing signal figure of the scanning overall process of examined workpiece B
The standard scores Butut of EB and the eddy current testing signal of standard workpiece A scanning overall processes are compared, if having beyond standard scores
The distribution of Butut then judges that there are abnormal qualities by examined workpiece B.
Above-described embodiment is only used for the processing method of a kind of polymorphic structure workpiece eddy current signal further illustrated the present invention,
But the invention is not limited in embodiment, every technical spirit according to the present invention any is simply repaiied to what above example was made
Change, equivalent variations and modification, each fall in the protection domain of technical solution of the present invention.
Claims (3)
1. a kind of processing method of polymorphic structure workpiece eddy current signal, it is characterised in that：Include the following steps,
A. Eddy Current Testing Transducer carries out scanning inspection using detection mode, detection parameters and the Scanning speed of setting to standard workpiece
It surveys, eddy current testing instrument record preserves the eddy current testing signal figure of standard workpiece scanning overall process；The standard workpiece is material, knot
Structure is identical with examined workpiece and workpiece without mass defect；
B. Eddy Current Testing Transducer using the detection mode identical with step a, detection parameters and Scanning speed to examined workpiece into
Row scanning detects, and eddy current testing instrument record preserves the eddy current testing signal figure of examined workpiece scanning overall process；
C. the standard work that will be obtained in the eddy current testing signal figure of the examined workpiece scanning overall process obtained in step b and step a
The eddy current testing signal figure of part scanning overall process carries out subtracting each other comparison processing analysis；Work is detected when subtracting each other comparison processing analysis result
The eddy current testing signal figure of part scanning overall process is identical with the eddy current testing signal figure of the scanning overall process of standard workpiece, then
Judge that examined workpiece quality is identical with standard workpiece；The vortex for handling analysis result examined workpiece scanning overall process is compared when subtracting each other
When detecting variant between signal graph and the eddy current testing signal figure of standard workpiece scanning overall process, then examined workpiece quality is judged
Different from standard workpiece, there are abnormal qualities.
2. a kind of processing method of polymorphic structure workpiece eddy current signal according to claim 1, it is characterised in that：Further
, after step a, step b, step c, the vortex that examined workpiece scanning overall process is indicated by Data Analysis Software calculating is examined
The time point of signal difference on signal graph is surveyed, according to the detection mode, detection parameters and Scanning speed set in step a, inverting
Extrapolate the position of examined workpiece abnormal quality.
3. a kind of processing method of polymorphic structure workpiece eddy current signal according to claim 2, it is characterised in that：Further
Use big data analysis method, multiple standard workpieces are detected, obtain the EDDY CURRENT of standard workpiece scanning overall process
The standard scores Butut of signal, then by the eddy current testing signal figure of the scanning overall process of examined workpiece and the full mistake of standard workpiece scanning
The standard scores Butut of the eddy current testing signal of journey is compared, if there is the distribution beyond standard scores Butut, judges
There are abnormal qualities for the examined workpiece.
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| CN201711458351.7A CN108169323A (en) | 2017-12-28 | 2017-12-28 | A kind of processing method of polymorphic structure workpiece eddy current signal |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108872369A (en) * | 2018-07-25 | 2018-11-23 | 爱德森（厦门）电子有限公司 | A kind of vortex online test method that Automatic parameter setting alarm is limited |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS61108960A (en) * | 1984-11-01 | 1986-05-27 | Jgc Corp | Extracting device of defective signal in eddy current flaw detecting test |
| US5438262A (en) * | 1992-07-10 | 1995-08-01 | Nippon Oil Co. Limited | Method and apparatus for the nondestructive determination of torsional breakage torque of tubular carbon fiber reinforced composite materials |
| JP2007085873A (en) * | 2005-09-21 | 2007-04-05 | Tetsuo Sakaki | Flaw detector |
| US20090091318A1 (en) * | 2007-09-11 | 2009-04-09 | Benoit Lepage | Phased scan eddy current array probe and a phased scanning method which provide complete and continuous coverage of a test surface without mechanical scanning |
| CN102621219A (en) * | 2011-01-28 | 2012-08-01 | 通用电气检查技术有限公司 | A non-destructive test method for automatic fastener inspection |
| CN104748666A (en) * | 2013-12-30 | 2015-07-01 | 中核武汉核电运行技术股份有限公司 | Deep defect quantifying method based on eddy rotating probe signal |
| CN106324087A (en) * | 2016-09-29 | 2017-01-11 | 爱德森（厦门）电子有限公司 | Method for enlarging comparison type eddy current testing dynamic signal range of special-shaped workpiece |
-
2017
- 2017-12-28 CN CN201711458351.7A patent/CN108169323A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS61108960A (en) * | 1984-11-01 | 1986-05-27 | Jgc Corp | Extracting device of defective signal in eddy current flaw detecting test |
| US5438262A (en) * | 1992-07-10 | 1995-08-01 | Nippon Oil Co. Limited | Method and apparatus for the nondestructive determination of torsional breakage torque of tubular carbon fiber reinforced composite materials |
| JP2007085873A (en) * | 2005-09-21 | 2007-04-05 | Tetsuo Sakaki | Flaw detector |
| US20090091318A1 (en) * | 2007-09-11 | 2009-04-09 | Benoit Lepage | Phased scan eddy current array probe and a phased scanning method which provide complete and continuous coverage of a test surface without mechanical scanning |
| CN102621219A (en) * | 2011-01-28 | 2012-08-01 | 通用电气检查技术有限公司 | A non-destructive test method for automatic fastener inspection |
| CN104748666A (en) * | 2013-12-30 | 2015-07-01 | 中核武汉核电运行技术股份有限公司 | Deep defect quantifying method based on eddy rotating probe signal |
| CN106324087A (en) * | 2016-09-29 | 2017-01-11 | 爱德森（厦门）电子有限公司 | Method for enlarging comparison type eddy current testing dynamic signal range of special-shaped workpiece |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108872369A (en) * | 2018-07-25 | 2018-11-23 | 爱德森（厦门）电子有限公司 | A kind of vortex online test method that Automatic parameter setting alarm is limited |
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Application publication date: 20180615 |