JPS59126945A - 渦電流プロ−ブの出力信号を補償する方法および装置 - Google Patents
渦電流プロ−ブの出力信号を補償する方法および装置Info
- Publication number
- JPS59126945A JPS59126945A JP58225527A JP22552783A JPS59126945A JP S59126945 A JPS59126945 A JP S59126945A JP 58225527 A JP58225527 A JP 58225527A JP 22552783 A JP22552783 A JP 22552783A JP S59126945 A JPS59126945 A JP S59126945A
- Authority
- JP
- Japan
- Prior art keywords
- eddy current
- globe
- signal
- probe
- output 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.)
- Granted
Links
- 239000000523 sample Substances 0.000 title claims description 63
- 238000000034 method Methods 0.000 title claims description 15
- 238000004804 winding Methods 0.000 claims description 36
- 239000002184 metal Substances 0.000 claims description 22
- 229910052751 metal Inorganic materials 0.000 claims description 22
- 239000013598 vector Substances 0.000 claims description 16
- 238000010586 diagram Methods 0.000 claims description 8
- 239000002131 composite material Substances 0.000 claims description 7
- 230000000694 effects Effects 0.000 claims description 7
- 230000010363 phase shift Effects 0.000 claims description 7
- 239000003990 capacitor Substances 0.000 claims description 4
- 230000005291 magnetic effect Effects 0.000 claims description 4
- 238000012360 testing method Methods 0.000 claims description 3
- 230000005284 excitation Effects 0.000 claims 11
- 230000001939 inductive effect Effects 0.000 claims 7
- 238000010276 construction Methods 0.000 claims 3
- 230000008878 coupling Effects 0.000 claims 3
- 238000010168 coupling process Methods 0.000 claims 3
- 238000005859 coupling reaction Methods 0.000 claims 3
- 235000011511 Diospyros Nutrition 0.000 claims 1
- 244000236655 Diospyros kaki Species 0.000 claims 1
- 239000008280 blood Substances 0.000 claims 1
- 210000004369 blood Anatomy 0.000 claims 1
- 230000000295 complement effect Effects 0.000 claims 1
- 230000001502 supplementing effect Effects 0.000 claims 1
- 229910000831 Steel Inorganic materials 0.000 description 7
- 239000010959 steel Substances 0.000 description 7
- 230000005294 ferromagnetic effect Effects 0.000 description 6
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 3
- PCHJSUWPFVWCPO-UHFFFAOYSA-N gold Chemical compound [Au] PCHJSUWPFVWCPO-UHFFFAOYSA-N 0.000 description 3
- 239000010931 gold Substances 0.000 description 3
- 229910052737 gold Inorganic materials 0.000 description 3
- 230000005856 abnormality Effects 0.000 description 2
- 241000251730 Chondrichthyes Species 0.000 description 1
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 1
- 238000013459 approach Methods 0.000 description 1
- 230000008602 contraction Effects 0.000 description 1
- 229910052802 copper Inorganic materials 0.000 description 1
- 239000010949 copper Substances 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 239000004744 fabric Substances 0.000 description 1
- 239000000945 filler Substances 0.000 description 1
- 230000006698 induction Effects 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 150000002739 metals Chemical class 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000009659 non-destructive testing Methods 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01V—GEOPHYSICS; GRAVITATIONAL MEASUREMENTS; DETECTING MASSES OR OBJECTS; TAGS
- G01V3/00—Electric or magnetic prospecting or detecting; Measuring magnetic field characteristics of the earth, e.g. declination, deviation
- G01V3/08—Electric or magnetic prospecting or detecting; Measuring magnetic field characteristics of the earth, e.g. declination, deviation operating with magnetic or electric fields produced or modified by objects or geological structures or by detecting devices
- G01V3/10—Electric or magnetic prospecting or detecting; Measuring magnetic field characteristics of the earth, e.g. declination, deviation operating with magnetic or electric fields produced or modified by objects or geological structures or by detecting devices using induction coils
- G01V3/104—Electric or magnetic prospecting or detecting; Measuring magnetic field characteristics of the earth, e.g. declination, deviation operating with magnetic or electric fields produced or modified by objects or geological structures or by detecting devices using induction coils using several coupled or uncoupled coils
- G01V3/105—Electric or magnetic prospecting or detecting; Measuring magnetic field characteristics of the earth, e.g. declination, deviation operating with magnetic or electric fields produced or modified by objects or geological structures or by detecting devices using induction coils using several coupled or uncoupled coils forming directly coupled primary and secondary coils or loops
-
- 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
- G01N27/906—Compensating for velocity
Landscapes
- Physics & Mathematics (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Physics & Mathematics (AREA)
- Remote Sensing (AREA)
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Immunology (AREA)
- Electromagnetism (AREA)
- General Health & Medical Sciences (AREA)
- Analytical Chemistry (AREA)
- Health & Medical Sciences (AREA)
- Pathology (AREA)
- Electrochemistry (AREA)
- Biochemistry (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Environmental & Geological Engineering (AREA)
- Geology (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geophysics (AREA)
- Investigating Or Analyzing Materials By The Use Of Magnetic Means (AREA)
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US06/457,321 US4620152A (en) | 1983-01-11 | 1983-01-11 | Lift-off compensation of eddy current probes by translating without rotation the X-Y coordinate plot of the complex locus of the probe output |
| US457321 | 1983-01-11 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS59126945A true JPS59126945A (ja) | 1984-07-21 |
| JPH0379662B2 JPH0379662B2 (en, 2012) | 1991-12-19 |
Family
ID=23816280
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP58225527A Granted JPS59126945A (ja) | 1983-01-11 | 1983-12-01 | 渦電流プロ−ブの出力信号を補償する方法および装置 |
Country Status (5)
| Country | Link |
|---|---|
| US (1) | US4620152A (en, 2012) |
| EP (1) | EP0116116B1 (en, 2012) |
| JP (1) | JPS59126945A (en, 2012) |
| CA (1) | CA1254265A (en, 2012) |
| DE (1) | DE3377941D1 (en, 2012) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2009002945A (ja) * | 2007-06-12 | 2009-01-08 | Ge Inspection Technologies Ltd | パルス式うず電流検査のための自動リフトオフ補償 |
Families Citing this family (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5021738A (en) * | 1990-03-26 | 1991-06-04 | The United States Of America As Represented By The Secretary Of The Navy | Field variable, electronically controlled, nested coil eddy current probe |
| US5394084A (en) * | 1991-12-23 | 1995-02-28 | The Boeing Company | Method and apparatus for reducing errors in eddy-current conductivity measurements due to lift-off by interpolating between a plurality of reference conductivity measurements |
| US5446382A (en) * | 1993-06-23 | 1995-08-29 | The Babcock & Wilcox Company | Eddy current probe having one yoke within another yoke for increased inspection depth, sensitivity and discrimination |
| US5963030A (en) * | 1998-03-30 | 1999-10-05 | Union Oil Company Of California | Pipe inspection apparatus and process |
| DE102008024394A1 (de) * | 2008-05-15 | 2009-12-03 | V&M Deutschland Gmbh | Verfahren zur zerstörungsfreien Prüfung von Rohren |
| US9222917B2 (en) * | 2012-07-25 | 2015-12-29 | General Electric Company | Broadband eddy current probe |
| GB2524610B (en) * | 2014-03-28 | 2016-09-21 | Technical Software Consultants Ltd | A.C. Field measurement system |
| CN109813802A (zh) * | 2019-03-19 | 2019-05-28 | 浙江省特种设备检验研究院 | 一种用于无余高焊接接头焊缝位置定位的涡流检测方法 |
Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2980849A (en) * | 1956-12-24 | 1961-04-18 | Shell Oil Co | Sensing head for weld seam testing apparatus |
| US2985824A (en) * | 1958-04-14 | 1961-05-23 | Jr Claus J Renken | Nondestructive eddy current testing |
| US3197693A (en) * | 1960-10-04 | 1965-07-27 | Hugo L Libby | Nondestructive eddy current subsurface testing device providing compensation for variation in probe-to-specimen spacing and surface irregularities |
| US3358225A (en) * | 1964-03-27 | 1967-12-12 | Richard S Peugeot | Lift-off compensation for eddy current testers |
| GB1130870A (en) * | 1966-10-20 | 1968-10-16 | Nat Res Dev | Method and apparatus for detecting and measuring cracks in metal structures |
| FR2451032A1 (fr) * | 1979-03-09 | 1980-10-03 | Commissariat Energie Atomique | Appareil numerique pour le controle de pieces par courants de foucault |
-
1983
- 1983-01-11 US US06/457,321 patent/US4620152A/en not_active Expired - Lifetime
- 1983-09-23 CA CA000437486A patent/CA1254265A/en not_active Expired
- 1983-09-28 DE DE8383109668T patent/DE3377941D1/de not_active Expired
- 1983-09-28 EP EP83109668A patent/EP0116116B1/en not_active Expired
- 1983-12-01 JP JP58225527A patent/JPS59126945A/ja active Granted
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2009002945A (ja) * | 2007-06-12 | 2009-01-08 | Ge Inspection Technologies Ltd | パルス式うず電流検査のための自動リフトオフ補償 |
Also Published As
| Publication number | Publication date |
|---|---|
| US4620152A (en) | 1986-10-28 |
| EP0116116A3 (en) | 1985-04-03 |
| CA1254265A (en) | 1989-05-16 |
| DE3377941D1 (en) | 1988-10-13 |
| JPH0379662B2 (en, 2012) | 1991-12-19 |
| EP0116116B1 (en) | 1988-09-07 |
| EP0116116A2 (en) | 1984-08-22 |
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