SE457117B - Saett och anordning foer provning av elektriskt ledande provobjekt - Google Patents

Saett och anordning foer provning av elektriskt ledande provobjekt

Info

Publication number
SE457117B
SE457117B SE8400861A SE8400861A SE457117B SE 457117 B SE457117 B SE 457117B SE 8400861 A SE8400861 A SE 8400861A SE 8400861 A SE8400861 A SE 8400861A SE 457117 B SE457117 B SE 457117B
Authority
SE
Sweden
Prior art keywords
sensor
different
distance
effective
eddy currents
Prior art date
Application number
SE8400861A
Other languages
English (en)
Swedish (sv)
Other versions
SE8400861D0 (sv
SE8400861L (sv
Inventor
Bengt Hjalmar Toernblom
Original Assignee
Bengt Hjalmar Toernblom
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 Toernblom filed Critical Bengt Hjalmar Toernblom
Priority to SE8400861A priority Critical patent/SE457117B/sv
Publication of SE8400861D0 publication Critical patent/SE8400861D0/xx
Priority to DE8585101525T priority patent/DE3575607D1/de
Priority to EP85101525A priority patent/EP0152904B1/fr
Priority to JP60025370A priority patent/JPS60188841A/ja
Priority to US06/702,314 priority patent/US4703265A/en
Publication of SE8400861L publication Critical patent/SE8400861L/
Publication of SE457117B publication Critical patent/SE457117B/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)
  • Analytical Chemistry (AREA)
  • Electrochemistry (AREA)
  • Physics & Mathematics (AREA)
  • Health & Medical Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Chemical Kinetics & Catalysis (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)
SE8400861A 1984-02-17 1984-02-17 Saett och anordning foer provning av elektriskt ledande provobjekt SE457117B (sv)

Priority Applications (5)

Application Number Priority Date Filing Date Title
SE8400861A SE457117B (sv) 1984-02-17 1984-02-17 Saett och anordning foer provning av elektriskt ledande provobjekt
DE8585101525T DE3575607D1 (de) 1984-02-17 1985-02-13 Verfahren und durchfuehrungsanordnung zum pruefen von und/oder zum messen an elektrisch leitfaehigen pruefgegenstaende.
EP85101525A EP0152904B1 (fr) 1984-02-17 1985-02-13 Méthode et dispositif pour le test, et/ou la mesure d'objets électriquement conducteurs devant être testés
JP60025370A JPS60188841A (ja) 1984-02-17 1985-02-14 導電性供試体の試験及び測定の方法及び装置
US06/702,314 US4703265A (en) 1984-02-17 1985-02-15 Method and apparatus for compensating for different depths of sun currents induced in the object tested for imperfections

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
SE8400861A SE457117B (sv) 1984-02-17 1984-02-17 Saett och anordning foer provning av elektriskt ledande provobjekt

Publications (3)

Publication Number Publication Date
SE8400861D0 SE8400861D0 (sv) 1984-02-17
SE8400861L SE8400861L (sv) 1985-08-18
SE457117B true SE457117B (sv) 1988-11-28

Family

ID=20354782

Family Applications (1)

Application Number Title Priority Date Filing Date
SE8400861A SE457117B (sv) 1984-02-17 1984-02-17 Saett och anordning foer provning av elektriskt ledande provobjekt

Country Status (5)

Country Link
US (1) US4703265A (fr)
EP (1) EP0152904B1 (fr)
JP (1) JPS60188841A (fr)
DE (1) DE3575607D1 (fr)
SE (1) SE457117B (fr)

Families Citing this family (9)

* 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
US4982158A (en) * 1988-06-23 1991-01-01 Electric Power Research Institute, Inc. Method and apparatus for magnetic detection of flaws
SE467176B (sv) * 1990-07-24 1992-06-01 Toernbloms Kvalitetskontroll Anordning foer att reducera daempning vid/av virvelstroemsgivare
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
DE4310894A1 (de) * 1993-04-02 1994-10-06 Bosch Gmbh Robert Verfahren und Prüfsonde zum zerstörungsfreien Untersuchen von Oberflächen elektrisch leitfähiger Werkstoffe
DE4310893C2 (de) * 1993-04-02 1995-05-04 Bosch Gmbh Robert Verfahren und Prüfsonde zum zerstörungsfreien Prüfen der Oberflächen elektrisch leitfähiger Werkstoffe
DE10032143C2 (de) * 1999-09-30 2002-07-18 Heidenhain Gmbh Dr Johannes Ferraris-Sensor und Verfahren zum Betrieb eines Ferraris-Sensors
US6479989B2 (en) 1999-10-13 2002-11-12 Albert Rudolph Taylor Eddy current probe with an adjustable bisected sensing end
ES2465999T3 (es) 2011-09-29 2014-06-09 Abb Technology Ag Método y dispositivo para la detección de fisuras en un material metálico

Family Cites Families (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3159784A (en) * 1959-12-16 1964-12-01 Kelvin & Hughes Ltd Eddy current testing apparatus having means to relate electrical characteristics of a pickup unit to physical properties of a speciment
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
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
US4237419A (en) * 1978-06-07 1980-12-02 Tornbloms Kvalitetskontroll Ab Method and apparatus for non-destructive testing using a plurality of frequencies
FR2443682A1 (fr) * 1978-12-07 1980-07-04 Commissariat Energie Atomique Circuit de correction automatique d'un signal emis par un capteur differentiel desequilibre
US4303885A (en) * 1979-06-18 1981-12-01 Electric Power Research Institute, Inc. Digitally controlled multifrequency eddy current test apparatus and method
SU871056A1 (ru) * 1979-09-03 1981-10-07 Предприятие П/Я Р-6266 Электромагнитный способ измерени толщины немагнитных электропровод щих покрытий на ферромагнитном основании
SU905765A1 (ru) * 1980-05-12 1982-02-15 Военный Инженерный Краснознаменный Институт Им.А.Ф.Можайского Способ двухчастотного электромагнитного контрол ферромагнитных изделий
CA1158314A (fr) * 1980-08-18 1983-12-06 Majesty (Her) In Right Of Canada As Represented By Atomic Energy Of Cana Da Limited Sonde de surface a courants de foucault
US4503392A (en) * 1981-07-21 1985-03-05 Rizhsky Politekhnichesky Institut Apparatus for non-destructive testing of spot welds using an electromagnetic field
SU1046724A1 (ru) * 1982-03-04 1983-10-07 Томский Ордена Октябрьской Революции И Ордена Трудового Красного Знамени Политехнический Институт Им.С.М.Кирова Способ двухчастотного определени параметров ферромагнитных материалов и изделий

Also Published As

Publication number Publication date
DE3575607D1 (de) 1990-03-01
SE8400861D0 (sv) 1984-02-17
EP0152904B1 (fr) 1990-01-24
SE8400861L (sv) 1985-08-18
JPS60188841A (ja) 1985-09-26
EP0152904A2 (fr) 1985-08-28
US4703265A (en) 1987-10-27
EP0152904A3 (en) 1985-10-16

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