IT8323237A0 - Sonda per correnti parassite con discriminazione fra difetti e rumore. - Google Patents

Sonda per correnti parassite con discriminazione fra difetti e rumore.

Info

Publication number
IT8323237A0
IT8323237A0 IT8323237A IT2323783A IT8323237A0 IT 8323237 A0 IT8323237 A0 IT 8323237A0 IT 8323237 A IT8323237 A IT 8323237A IT 2323783 A IT2323783 A IT 2323783A IT 8323237 A0 IT8323237 A0 IT 8323237A0
Authority
IT
Italy
Prior art keywords
eddish
discrimination
defects
noise
current probe
Prior art date
Application number
IT8323237A
Other languages
English (en)
Other versions
IT1194424B (it
Inventor
Valentino S Cecco
Hugh Warren Ghent
Original Assignee
Ca Atomic Energy Ltd
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 Ca Atomic Energy Ltd filed Critical Ca Atomic Energy Ltd
Publication of IT8323237A0 publication Critical patent/IT8323237A0/it
Application granted granted Critical
Publication of IT1194424B publication Critical patent/IT1194424B/it

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
    • G01N27/904—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 with two or more sensors
    • 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
IT23237/83A 1982-10-22 1983-10-10 Sonda per correnti parassite con discriminazione fra difetti e rumore IT1194424B (it)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CA000414020A CA1201481A (en) 1982-10-22 1982-10-22 Eddy current probe with defect-noise discrimination

Publications (2)

Publication Number Publication Date
IT8323237A0 true IT8323237A0 (it) 1983-10-10
IT1194424B IT1194424B (it) 1988-09-22

Family

ID=4123812

Family Applications (1)

Application Number Title Priority Date Filing Date
IT23237/83A IT1194424B (it) 1982-10-22 1983-10-10 Sonda per correnti parassite con discriminazione fra difetti e rumore

Country Status (7)

Country Link
US (1) US4608534A (it)
JP (1) JPS5992342A (it)
CA (1) CA1201481A (it)
DE (1) DE3336783A1 (it)
FR (1) FR2535056B1 (it)
GB (1) GB2129140B (it)
IT (1) IT1194424B (it)

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DE3410547A1 (de) * 1984-03-22 1985-09-26 Institut Dr. Friedrich Förster Prüfgerätebau GmbH & Co KG, 7410 Reutlingen Pruefgeraet zum untersuchen elektrisch leitender pruefteile
JPS61134658A (ja) * 1984-12-05 1986-06-21 Hitachi Cable Ltd 渦流探傷コイル
US4808924A (en) * 1987-02-19 1989-02-28 Atomic Energy Of Canada Limited Circumferentially compensating eddy current probe with alternately polarized transmit coils and receiver coils
US4808927A (en) * 1987-02-19 1989-02-28 Atomic Energy Of Canada Limited Circumferentially compensating eddy current probe with alternately polarized receiver coil
US5140265A (en) * 1989-12-20 1992-08-18 Olympus Optical Co., Ltd Eddy current flaw detecting endoscope apparatus which produces signals which control other devices
JP2515596Y2 (ja) * 1990-11-28 1996-10-30 株式会社豊田中央研究所 磁性部品の検査装置
GB2281399B (en) * 1991-04-22 1995-08-16 Tokyo Gas Co Ltd Flaw detector for metal material
GB2255184B (en) * 1991-04-22 1995-08-16 Tokyo Gas Co Ltd Flaw detector for metal material
US5418456A (en) * 1992-06-17 1995-05-23 Westinghouse Electric Corporation Monitoring pilger forming operation by sensing periodic lateral displacement of workpiece
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
CA2076205C (en) * 1992-08-14 1999-04-20 Valentino S. Cecco Differential transmit-receive eddy current probe incorporating bracelets of multi-coil units
US5926020A (en) * 1994-11-16 1999-07-20 Samson; Rock Eddy current hybrid probe with movable magnetic field altering member
DE19819066A1 (de) * 1998-04-29 1999-11-11 F I T Messtechnik Gmbh Prüfverfahren zur berührungslosen Erkennung von Ungleichmäßigkeiten in der Wanddicke von unzugänglichen metallischen Rohren
US6165542A (en) * 1998-12-23 2000-12-26 United Technologies Corporation Method for fabricating and inspecting coatings
AU2279901A (en) 1999-12-20 2001-07-03 Henry Moncrieff O'connor Method for generating and displaying complex data utilizing color-coded signals
US20040257072A1 (en) * 2003-06-19 2004-12-23 Rock Samson Dual-sensitivity eddy current test probe
WO2006113504A2 (en) * 2005-04-14 2006-10-26 Henry Moncrieff O'connor Near fieldtm and combination near fieldtm - remote field electromagnetic testing (et) probes for inspecting ferromagnetic pipes and tubes such as those used in heat exchangers
WO2007056679A2 (en) * 2005-11-03 2007-05-18 The Clock Spring Company L.P. Comformable eddy current array
US7295004B2 (en) * 2006-03-03 2007-11-13 Gary Kroner Eddy current probe and method of manufacture thereof
DE102007027822B4 (de) 2007-06-13 2013-12-12 Micro-Epsilon Messtechnik Gmbh & Co. Kg Induktiv arbeitende Sensoranordnung und Verfahren zum Beeinflussen des Messverhaltens einer Messspule
US20090160437A1 (en) * 2007-12-21 2009-06-25 Carbon Steel Inspection, Inc. Eddy Current Probe And Method Of Manufacture Thereof
US8166821B2 (en) * 2008-07-14 2012-05-01 Eaton Corporation Non-destructive test evaluation of welded claddings on rods of hydraulic cylinders used for saltwater, brackish and freshwater applications
JP5800696B2 (ja) * 2011-11-30 2015-10-28 日立交通テクノロジー株式会社 リモートフィールド渦電流探傷システムおよびリモートフィールド渦電流探傷方法

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US2104646A (en) * 1935-06-20 1938-01-04 Pittsburgh Dry Stencil Company Means for testing
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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
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US3693075A (en) * 1969-11-15 1972-09-19 Forster F M O Eddy current system for testing tubes for defects,eccentricity,and wall thickness
US3611120A (en) * 1970-02-24 1971-10-05 Forster F M O Eddy current testing systems with means to compensate for probe to workpiece spacing
US3707671A (en) * 1970-05-01 1972-12-26 Robert S Morrow Inductive vibration pickup apparatus
US3753096A (en) * 1971-02-04 1973-08-14 Automation Ind Inc Eddy current flaw detection system with left off compensation
US3737764A (en) * 1971-09-27 1973-06-05 Commissariat Energie Atomique Eddy-current test apparatus for detection of flaws in a metal seal placed within an electrically conductive tube
US3840802A (en) * 1972-08-10 1974-10-08 Rockwell International Corp Mutual inductance coupling probe for testing the integrity of through-hole plating in printed circuit boards
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DE2725354C2 (de) * 1977-06-04 1986-06-12 SKF GmbH, 8720 Schweinfurt Prüfkopf zur induktiven Oberflächenprüfung von metallischen Werkstücken
US4204159A (en) * 1978-04-18 1980-05-20 Johnson Duane P Eddy-current test probe with segmented circumferential test gap and method for inspection of materials
US4233583A (en) * 1978-09-22 1980-11-11 Bicron Electronics Company Flux shielded solenoid
US4292589A (en) * 1979-05-09 1981-09-29 Schlumberger Technology Corporation Eddy current method and apparatus for inspecting ferromagnetic tubular members
CA1158314A (en) * 1980-08-18 1983-12-06 Majesty (Her) In Right Of Canada As Represented By Atomic Energy Of Cana Da Limited Eddy current surface probe

Also Published As

Publication number Publication date
JPS5992342A (ja) 1984-05-28
CA1201481A (en) 1986-03-04
FR2535056A1 (fr) 1984-04-27
FR2535056B1 (fr) 1988-10-14
DE3336783A1 (de) 1984-04-26
IT1194424B (it) 1988-09-22
GB2129140A (en) 1984-05-10
US4608534A (en) 1986-08-26
GB8327262D0 (en) 1983-11-16
GB2129140B (en) 1986-11-26

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