SE8701082D0 - Fasselektiv detektering via produkt- och/eller kvot-generering - Google Patents
Fasselektiv detektering via produkt- och/eller kvot-genereringInfo
- Publication number
- SE8701082D0 SE8701082D0 SE8701082A SE8701082A SE8701082D0 SE 8701082 D0 SE8701082 D0 SE 8701082D0 SE 8701082 A SE8701082 A SE 8701082A SE 8701082 A SE8701082 A SE 8701082A SE 8701082 D0 SE8701082 D0 SE 8701082D0
- Authority
- SE
- Sweden
- Prior art keywords
- alpha
- phase
- sin
- cos
- signal
- Prior art date
Links
- 239000006227 byproduct Substances 0.000 title 1
- 238000001514 detection method Methods 0.000 title 1
- 238000000034 method Methods 0.000 abstract 2
- 238000012360 testing method Methods 0.000 abstract 2
- 229910000831 Steel Inorganic materials 0.000 abstract 1
- 230000035945 sensitivity Effects 0.000 abstract 1
- 238000000926 separation method Methods 0.000 abstract 1
- 239000010959 steel Substances 0.000 abstract 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 (en) | 1987-03-17 | 1988-03-12 | Method and device for phase-selective testing and/or measuring of test objects with eddy current techniques. |
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 true SE8701082D0 (sv) | 1987-03-17 |
SE8701082L SE8701082L (sv) | 1988-09-18 |
SE456865B 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 (sv) |
EP (1) | EP0282930A3 (sv) |
JP (1) | JPS63308556A (sv) |
SE (1) | SE456865B (sv) |
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 |
WO2003034054A2 (en) * | 2001-10-17 | 2003-04-24 | Aea Technology Plc | Method and apparatus for measuring material properties and lift-off components of an object using a magnetic probe |
EP1952135A4 (en) * | 2005-11-03 | 2011-12-14 | Coastal Res Corp | CONVIVIAL FOUCAULT CURRENT NETWORK |
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 (8)
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 | 1974-09-12 | Nippon Kokan Kk | Högkänslig, med virvelströmmar arbetande feldetektor |
SE393867C (sv) * | 1975-07-09 | 1978-12-07 | Tornblom Bengt Hjalmar | Anordning for provning och/eller metning av forendringar i elektriskt ledande kroppar |
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/en not_active Withdrawn
- 1988-03-15 JP JP63061753A patent/JPS63308556A/ja active Pending
- 1988-03-15 US US07/168,416 patent/US4864235A/en not_active Expired - Fee Related
Also Published As
Publication number | Publication date |
---|---|
EP0282930A2 (en) | 1988-09-21 |
EP0282930A3 (en) | 1989-12-13 |
JPS63308556A (ja) | 1988-12-15 |
SE8701082L (sv) | 1988-09-18 |
SE456865B (sv) | 1988-11-07 |
US4864235A (en) | 1989-09-05 |
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