SE456043B - Sett och anordning for provning och/eller metning av elektriskt ledande provobjekt med avseende pa forendringar - Google Patents

Sett och anordning for provning och/eller metning av elektriskt ledande provobjekt med avseende pa forendringar

Info

Publication number
SE456043B
SE456043B SE8400698A SE8400698A SE456043B SE 456043 B SE456043 B SE 456043B SE 8400698 A SE8400698 A SE 8400698A SE 8400698 A SE8400698 A SE 8400698A SE 456043 B SE456043 B SE 456043B
Authority
SE
Sweden
Prior art keywords
sensor
test object
distance
transformation
function
Prior art date
Application number
SE8400698A
Other languages
English (en)
Swedish (sv)
Other versions
SE8400698L (sv
SE8400698D0 (sv
Inventor
Bengt Hjalmar Tornblom
Original Assignee
Bengt Hjalmar Tornblom
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Bengt Hjalmar Tornblom filed Critical Bengt Hjalmar Tornblom
Priority to SE8400698A priority Critical patent/SE456043B/sv
Publication of SE8400698D0 publication Critical patent/SE8400698D0/xx
Priority to JP60022727A priority patent/JPS60187859A/ja
Priority to EP85101296A priority patent/EP0152066B1/fr
Priority to DE8585101296T priority patent/DE3587478D1/de
Priority to US06/699,594 priority patent/US4661777A/en
Publication of SE8400698L publication Critical patent/SE8400698L/
Publication of SE456043B publication Critical patent/SE456043B/sv

Links

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)
  • Measurement Of Length, Angles, Or The Like Using Electric Or Magnetic Means (AREA)
SE8400698A 1984-02-10 1984-02-10 Sett och anordning for provning och/eller metning av elektriskt ledande provobjekt med avseende pa forendringar SE456043B (sv)

Priority Applications (5)

Application Number Priority Date Filing Date Title
SE8400698A SE456043B (sv) 1984-02-10 1984-02-10 Sett och anordning for provning och/eller metning av elektriskt ledande provobjekt med avseende pa forendringar
JP60022727A JPS60187859A (ja) 1984-02-10 1985-02-07 導電供試体の試験及び／もしくは測定方法及び装置
EP85101296A EP0152066B1 (fr) 1984-02-10 1985-02-07 Procédé et méthode pour le contrôle ou la mesure d'objets électriquement conducteurs
DE8585101296T DE3587478D1 (de) 1984-02-10 1985-02-07 Verfahren und durchfuehrungsanordnung zum pruefen und/oder messen elektrisch leitender pruefgegenstaende.
US06/699,594 US4661777A (en) 1984-02-10 1985-02-08 Plural frequency eddy current method and apparatus with lift-off compensation for detecting faults in electrically conductive objects

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
SE8400698A SE456043B (sv) 1984-02-10 1984-02-10 Sett och anordning for provning och/eller metning av elektriskt ledande provobjekt med avseende pa forendringar

Publications (3)

Publication Number Publication Date
SE8400698D0 SE8400698D0 (sv) 1984-02-10
SE8400698L SE8400698L (sv) 1985-08-11
SE456043B true SE456043B (sv) 1988-08-29

Family

ID=20354671

Family Applications (1)

Application Number Title Priority Date Filing Date
SE8400698A SE456043B (sv) 1984-02-10 1984-02-10 Sett och anordning for provning och/eller metning av elektriskt ledande provobjekt med avseende pa forendringar

Country Status (5)

Country Link
US (1) US4661777A (fr)
EP (1) EP0152066B1 (fr)
JP (1) JPS60187859A (fr)
DE (1) DE3587478D1 (fr)
SE (1) SE456043B (fr)

Families Citing this family (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
SE456610B (sv) * 1985-01-08 1988-10-17 Tornbloms Kvalitetskontroll Ab Anordning for overforing av signaler och/eller media mellan en met-och/eller kontroll-anordning och minst en dertill horande rorlig, t ex roterande givare
US4818936A (en) * 1985-02-15 1989-04-04 The Broken Hill Proprietary Company Limited Method and apparatus for identifying and classifying steels
EP0216357A3 (fr) * 1985-09-25 1988-08-31 Nippon Zeon Co., Ltd. Composés phosphoramidites et leur procédé de préparation
US4837510A (en) * 1987-01-30 1989-06-06 Tornbloms Kvalitetskontroll Ab Device for suppression and/or separation of signals due to magnetic oxide scales in hot cast billets
SE467711B (sv) * 1987-02-09 1992-08-31 Bengt Hjalmar Toernblom Anordning foer maetning/provning med virvelstroemsteknik medelst flera dynamiskt kompenserade givare
SE456865B (sv) * 1987-03-17 1988-11-07 Bengt Hjalmar Toernblom Anordning foer provning och/eller maetning, innefattande minst en faskaenslig detektor
US4967154A (en) * 1989-09-13 1990-10-30 Optima Industries, Inc. Dynamic tube runout measuring method and apparatus with square wave energized reluctance measuring coils
US5371461A (en) * 1992-06-26 1994-12-06 General Electric Company Apparatus and method for compensating for variations in the lift-off of eddy current surface inspection array elements
GB0124910D0 (en) 2001-10-17 2001-12-05 Accentus Plc Measurement of material properties
US7258892B2 (en) * 2003-12-10 2007-08-21 Micron Technology, Inc. Methods and systems for controlling temperature during microfeature workpiece processing, e.g., CVD deposition
US20130249540A1 (en) * 2012-03-22 2013-09-26 Olympus Ndt Inc. Eddy current array probe and method for lift-off compensation during operation without known lift references

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
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
GB1475517A (en) * 1974-06-27 1977-06-01 British Steel Corp Detection of surface defects in elongate metallic members
US4191922A (en) * 1978-03-14 1980-03-04 Republic Steel Corporation Electromagnetic flaw detection system and method incorporating improved automatic coil error signal compensation
SE7813344L (sv) * 1978-12-28 1980-06-29 Bengt Hjalmar Tornblom Met- och/eller kompensationsanordning
JPS55113949A (en) * 1979-02-26 1980-09-02 Kubota Ltd Flaw detector for cast iron pipe
US4303885A (en) * 1979-06-18 1981-12-01 Electric Power Research Institute, Inc. Digitally controlled multifrequency eddy current test apparatus and method

Also Published As

Publication number Publication date
DE3587478D1 (de) 1993-09-02
US4661777A (en) 1987-04-28
SE8400698L (sv) 1985-08-11
EP0152066A2 (fr) 1985-08-21
JPS60187859A (ja) 1985-09-25
EP0152066B1 (fr) 1993-07-28
SE8400698D0 (sv) 1984-02-10
EP0152066A3 (en) 1988-08-31

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