FR1255436A - Improvements to electromagnetic devices for detecting defects in metal products - Google Patents

Improvements to electromagnetic devices for detecting defects in metal products

Info

Publication number
FR1255436A
FR1255436A FR816702A FR816702A FR1255436A FR 1255436 A FR1255436 A FR 1255436A FR 816702 A FR816702 A FR 816702A FR 816702 A FR816702 A FR 816702A FR 1255436 A FR1255436 A FR 1255436A
Authority
FR
France
Prior art keywords
metal products
detecting defects
electromagnetic devices
electromagnetic
devices
Prior art date
Legal status (The legal status 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 status listed.)
Expired
Application number
FR816702A
Other languages
French (fr)
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Institut de Recherches de la Siderurgie Francaise IRSID
Original Assignee
Institut de Recherches de la Siderurgie Francaise IRSID
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 Institut de Recherches de la Siderurgie Francaise IRSID filed Critical Institut de Recherches de la Siderurgie Francaise IRSID
Priority to FR816702A priority Critical patent/FR1255436A/en
Priority to BE592745A priority patent/BE592745A/en
Priority to GB4434560A priority patent/GB907418A/en
Application granted granted Critical
Publication of FR1255436A publication Critical patent/FR1255436A/en
Expired legal-status Critical Current

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
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01V—GEOPHYSICS; GRAVITATIONAL MEASUREMENTS; DETECTING MASSES OR OBJECTS; TAGS
    • G01V3/00—Electric or magnetic prospecting or detecting; Measuring magnetic field characteristics of the earth, e.g. declination, deviation
    • G01V3/08—Electric or magnetic prospecting or detecting; Measuring magnetic field characteristics of the earth, e.g. declination, deviation operating with magnetic or electric fields produced or modified by objects or geological structures or by detecting devices
    • G01V3/10—Electric or magnetic prospecting or detecting; Measuring magnetic field characteristics of the earth, e.g. declination, deviation operating with magnetic or electric fields produced or modified by objects or geological structures or by detecting devices using induction coils

Landscapes

  • Physics & Mathematics (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • General Physics & Mathematics (AREA)
  • Remote Sensing (AREA)
  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Immunology (AREA)
  • Electromagnetism (AREA)
  • General Health & Medical Sciences (AREA)
  • Analytical Chemistry (AREA)
  • Health & Medical Sciences (AREA)
  • Pathology (AREA)
  • Electrochemistry (AREA)
  • Biochemistry (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Environmental & Geological Engineering (AREA)
  • Geology (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Geophysics (AREA)
  • Investigating Or Analyzing Materials By The Use Of Magnetic Means (AREA)
FR816702A 1960-01-26 1960-01-26 Improvements to electromagnetic devices for detecting defects in metal products Expired FR1255436A (en)

Priority Applications (3)

Application Number Priority Date Filing Date Title
FR816702A FR1255436A (en) 1960-01-26 1960-01-26 Improvements to electromagnetic devices for detecting defects in metal products
BE592745A BE592745A (en) 1960-01-26 1960-07-07 Improvements to catamarans.
GB4434560A GB907418A (en) 1960-01-26 1960-12-23 Device for use with apparatus and apparatus for the detection of defects in metal products

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR816702A FR1255436A (en) 1960-01-26 1960-01-26 Improvements to electromagnetic devices for detecting defects in metal products

Publications (1)

Publication Number Publication Date
FR1255436A true FR1255436A (en) 1961-03-10

Family

ID=8724332

Family Applications (1)

Application Number Title Priority Date Filing Date
FR816702A Expired FR1255436A (en) 1960-01-26 1960-01-26 Improvements to electromagnetic devices for detecting defects in metal products

Country Status (3)

Country Link
BE (1) BE592745A (en)
FR (1) FR1255436A (en)
GB (1) GB907418A (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
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
FR2160609A1 (en) * 1971-11-19 1973-06-29 Nippon Kokan Kk Locating welds in strip - in a continuous strip rolling line
FR2319115A1 (en) * 1975-07-19 1977-02-18 Hochtemperatur Reaktorbau Gmbh High temperature reactor spherical elements identified - by inductive receiver and bridge circuit to measure detuning and phase displacement
EP0253274A2 (en) * 1986-07-15 1988-01-20 Törnbloms Kvalitetskontroll Ab Device utilizing eddy current technique for measuring and/or supervision

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
BE714379A (en) * 1967-05-25 1968-09-16
US4134067A (en) * 1977-09-09 1979-01-09 The Boeing Company Rotary eddy current flaw detector utilizing differentially unbalanced coils and the amplitude of a rotary induced pulse to produce the charging voltage for the sweep generator
DE3017979A1 (en) * 1980-05-10 1981-11-12 Institut Dr. Friedrich Förster Prüfgerätebau, 7410 Reutlingen METHOD AND ARRANGEMENT FOR EVALUATING AN ERROR SIGNAL VOLTAGE

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
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
FR2160609A1 (en) * 1971-11-19 1973-06-29 Nippon Kokan Kk Locating welds in strip - in a continuous strip rolling line
FR2319115A1 (en) * 1975-07-19 1977-02-18 Hochtemperatur Reaktorbau Gmbh High temperature reactor spherical elements identified - by inductive receiver and bridge circuit to measure detuning and phase displacement
EP0253274A2 (en) * 1986-07-15 1988-01-20 Törnbloms Kvalitetskontroll Ab Device utilizing eddy current technique for measuring and/or supervision
EP0253274A3 (en) * 1986-07-15 1989-07-26 Törnbloms Kvalitetskontroll Ab Device utilizing eddy current technique for measuring and/or supervision
US4965519A (en) * 1986-07-15 1990-10-23 Tornbloms Kvalitetskonthol Ab Suppression of the effect of harmless surface defects in eddy current testing by sensitivity characteristic compensation

Also Published As

Publication number Publication date
GB907418A (en) 1962-10-03
BE592745A (en) 1960-10-31

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