SE456865B - Anordning foer provning och/eller maetning, innefattande minst en faskaenslig detektor - Google Patents
Anordning foer provning och/eller maetning, innefattande minst en faskaenslig detektorInfo
- Publication number
- SE456865B SE456865B SE8701082A SE8701082A SE456865B SE 456865 B SE456865 B SE 456865B SE 8701082 A SE8701082 A SE 8701082A SE 8701082 A SE8701082 A SE 8701082A SE 456865 B SE456865 B SE 456865B
- Authority
- SE
- Sweden
- Prior art keywords
- phase
- detector
- signal
- sin
- vector
- Prior art date
Links
- 238000012360 testing method Methods 0.000 title claims 3
- 239000013598 vector Substances 0.000 claims description 44
- 230000015572 biosynthetic process Effects 0.000 claims description 20
- 230000035945 sensitivity Effects 0.000 claims description 14
- 230000009466 transformation Effects 0.000 claims description 12
- 238000000926 separation method Methods 0.000 claims description 5
- 238000001514 detection method Methods 0.000 claims description 4
- 230000008859 change Effects 0.000 claims description 3
- 230000001360 synchronised effect Effects 0.000 claims description 3
- 238000005259 measurement Methods 0.000 claims description 2
- 229910000831 Steel Inorganic materials 0.000 claims 1
- 239000010959 steel Substances 0.000 claims 1
- 239000000047 product Substances 0.000 description 23
- 238000005755 formation reaction Methods 0.000 description 19
- 238000010586 diagram Methods 0.000 description 6
- 238000000034 method Methods 0.000 description 2
- 206010010219 Compulsions Diseases 0.000 description 1
- 230000000903 blocking effect Effects 0.000 description 1
- 238000005352 clarification Methods 0.000 description 1
- 230000002950 deficient Effects 0.000 description 1
- 230000001419 dependent effect Effects 0.000 description 1
- 230000001788 irregular Effects 0.000 description 1
- 238000012886 linear function Methods 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 230000004044 response Effects 0.000 description 1
- 239000000523 sample Substances 0.000 description 1
- 238000011896 sensitive detection Methods 0.000 description 1
- 239000013589 supplement Substances 0.000 description 1
- 230000001629 suppression Effects 0.000 description 1
Classifications
-
- 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
Landscapes
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Electrochemistry (AREA)
- Physics & Mathematics (AREA)
- Health & Medical Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Analytical Chemistry (AREA)
- Biochemistry (AREA)
- General Health & Medical Sciences (AREA)
- General Physics & Mathematics (AREA)
- Immunology (AREA)
- Pathology (AREA)
- Investigating Or Analyzing Materials By The Use Of Magnetic Means (AREA)
- Investigating Or Analyzing Materials By The Use Of Electric Means (AREA)
Priority Applications (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
SE8701082A SE456865B (sv) | 1987-03-17 | 1987-03-17 | Anordning foer provning och/eller maetning, innefattande minst en faskaenslig detektor |
EP88103938A EP0282930A3 (de) | 1987-03-17 | 1988-03-12 | Verfahren und Vorrichtung zur phasenabhängigen Untersuchung und/oder Messung von Proben durch Wirbelströme |
JP63061753A JPS63308556A (ja) | 1987-03-17 | 1988-03-15 | 物体の試験装置 |
US07/168,416 US4864235A (en) | 1987-03-17 | 1988-03-15 | Phase-selective monitoring via vector transformation |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
SE8701082A SE456865B (sv) | 1987-03-17 | 1987-03-17 | Anordning foer provning och/eller maetning, innefattande minst en faskaenslig detektor |
Publications (3)
Publication Number | Publication Date |
---|---|
SE8701082D0 SE8701082D0 (sv) | 1987-03-17 |
SE8701082L SE8701082L (sv) | 1988-09-18 |
SE456865B true SE456865B (sv) | 1988-11-07 |
Family
ID=20367881
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
SE8701082A SE456865B (sv) | 1987-03-17 | 1987-03-17 | Anordning foer provning och/eller maetning, innefattande minst en faskaenslig detektor |
Country Status (4)
Country | Link |
---|---|
US (1) | US4864235A (de) |
EP (1) | EP0282930A3 (de) |
JP (1) | JPS63308556A (de) |
SE (1) | SE456865B (de) |
Families Citing this family (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5006800A (en) * | 1989-11-06 | 1991-04-09 | General Electric Company | Eddy current imaging apparatus and method using phase difference detection |
FR2689637B1 (fr) * | 1992-04-06 | 1996-08-09 | Aerospatiale | Procede et installation de controle non destructif d'une piece utilisant un capteur a courants de foucault. |
US5485084A (en) * | 1993-05-10 | 1996-01-16 | The Boeing Company | Apparatus and method for detecting structural cracks using a movable detector |
DK76293D0 (da) * | 1993-06-25 | 1993-06-25 | Brueel & Kjaer As | Forskydningstransducer |
US5541510A (en) * | 1995-04-06 | 1996-07-30 | Kaman Instrumentation Corporation | Multi-Parameter eddy current measuring system with parameter compensation technical field |
DE10045715A1 (de) | 2000-09-15 | 2002-03-28 | Busch Dieter & Co Prueftech | Verfahren und Vorrichtung zur Prüfung eines Werkstücks mittels Wirbelströmen |
AU2002329471A1 (en) * | 2001-10-17 | 2003-04-28 | Aea Technology Plc | Method and apparatus for measuring material properties and lift-off components of an object using a magnetic probe |
EP1952135A4 (de) * | 2005-11-03 | 2011-12-14 | Coastal Res Corp | Array mit gleichförmigen wirbelströmen |
GB2456583B (en) * | 2008-01-21 | 2012-09-05 | Ge Inspection Technologies Ltd | Eddy current inspection system and method of eddy current flaw detection |
Family Cites Families (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3721896A (en) * | 1971-12-23 | 1973-03-20 | Nippon Kokan Kk | Improved phase sensitive eddy current defect detector utilizing frequency doubling of detected signal prior to phase detection |
SE351493C (sv) * | 1971-12-28 | 1974-09-23 | Nippon Kokan Kk | Högkänslig, med virvelströmmar arbetande feldetektor |
US4061968A (en) * | 1976-09-07 | 1977-12-06 | Commissariat A L'energie Atomique | Process of and apparatus for non-destructive eddy current testing involves the suppression of displayed lobes corresponding to fault parameters to be eliminated from the display |
US4424486A (en) * | 1980-10-14 | 1984-01-03 | Zetec, Inc. | Phase rotation circuit for an eddy current tester |
SE8302738L (sv) * | 1983-05-16 | 1984-11-17 | Bengt Hjalmar Tornblom | Anordning och/eller sett baserad pa frekvensvalsprincip |
JPS60161556A (ja) * | 1984-01-31 | 1985-08-23 | Sumitomo Metal Ind Ltd | 連続鋳造鋳片の渦流探傷方法 |
SE456043B (sv) * | 1984-02-10 | 1988-08-29 | Bengt Hjalmar Tornblom | Sett och anordning for provning och/eller metning av elektriskt ledande provobjekt med avseende pa forendringar |
-
1987
- 1987-03-17 SE SE8701082A patent/SE456865B/sv not_active IP Right Cessation
-
1988
- 1988-03-12 EP EP88103938A patent/EP0282930A3/de not_active Withdrawn
- 1988-03-15 US US07/168,416 patent/US4864235A/en not_active Expired - Fee Related
- 1988-03-15 JP JP63061753A patent/JPS63308556A/ja active Pending
Also Published As
Publication number | Publication date |
---|---|
EP0282930A3 (de) | 1989-12-13 |
SE8701082L (sv) | 1988-09-18 |
JPS63308556A (ja) | 1988-12-15 |
EP0282930A2 (de) | 1988-09-21 |
US4864235A (en) | 1989-09-05 |
SE8701082D0 (sv) | 1987-03-17 |
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