GB1429620A - Device for checking elongated metallic test material for defects - Google Patents

Device for checking elongated metallic test material for defects

Info

Publication number
GB1429620A
GB1429620A GB3385574A GB3385574A GB1429620A GB 1429620 A GB1429620 A GB 1429620A GB 3385574 A GB3385574 A GB 3385574A GB 3385574 A GB3385574 A GB 3385574A GB 1429620 A GB1429620 A GB 1429620A
Authority
GB
United Kingdom
Prior art keywords
signal
flaw
components
gate
circuits
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
GB3385574A
Other languages
English (en)
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 Dr Friedrich Foerster Pruefgeraetebau GmbH and Co KG
Original Assignee
Institut Dr Friedrich Foerster Pruefgeraetebau GmbH and Co KG
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
Priority claimed from DE19732349046 external-priority patent/DE2349046C3/de
Application filed by Institut Dr Friedrich Foerster Pruefgeraetebau GmbH and Co KG filed Critical Institut Dr Friedrich Foerster Pruefgeraetebau GmbH and Co KG
Publication of GB1429620A publication Critical patent/GB1429620A/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

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)
  • Video Image Reproduction Devices For Color Tv Systems (AREA)
GB3385574A 1973-09-29 1974-07-31 Device for checking elongated metallic test material for defects Expired GB1429620A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE19732349046 DE2349046C3 (de) 1973-09-29 Einrichtung zum Prüfen von langgestrecktem metallischem Prüfgut auf Fehler

Publications (1)

Publication Number Publication Date
GB1429620A true GB1429620A (en) 1976-03-24

Family

ID=5894096

Family Applications (1)

Application Number Title Priority Date Filing Date
GB3385574A Expired GB1429620A (en) 1973-09-29 1974-07-31 Device for checking elongated metallic test material for defects

Country Status (4)

Country Link
US (1) US3904957A (enExample)
JP (1) JPS539868B2 (enExample)
FR (1) FR2246870B1 (enExample)
GB (1) GB1429620A (enExample)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4424486A (en) 1980-10-14 1984-01-03 Zetec, Inc. Phase rotation circuit for an eddy current tester

Families Citing this family (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4095180A (en) * 1975-12-29 1978-06-13 K. J. Law Engineers, Inc. Method and apparatus for testing conductivity using eddy currents
DE2840748A1 (de) * 1978-09-15 1980-03-27 Mannesmann Ag Verfahren zur automatischen fehlerunterscheidung bei der zerstoerungsfreien werkstoffpruefung
JPH028210Y2 (enExample) * 1980-01-31 1990-02-27
US4476434A (en) * 1982-01-25 1984-10-09 The United States Of America As Represented By The United States Department Of Energy Non-destructive testing method and apparatus utilizing phase multiplication holography
DE3213267A1 (de) * 1982-04-08 1983-10-20 Nukem Gmbh, 6450 Hanau Verfahren und vorrichtung zur pruefung von werkstoffen nach dem wirbelstromprinzip
GB2140564B (en) * 1983-05-23 1986-10-22 Central Electr Generat Board Cable corrosion monitor
JPS618656A (ja) * 1984-06-22 1986-01-16 Hara Denshi Sokki Kk フラツクス充填状態の検出方法及び装置
US4808926A (en) * 1986-08-18 1989-02-28 Essex Group, Inc. Eddy current apparatus and method for controlling a rod mill on the basis of faults detected per unit time
DE3720686A1 (de) * 1987-06-23 1989-01-05 Foerster Inst Dr Friedrich Verfahren zum untersuchen eines objektes
DE3817574A1 (de) * 1988-05-24 1989-11-30 Fraunhofer Ges Forschung Wirbelstromsensor
JP2019516191A (ja) * 2016-05-03 2019-06-13 レオニ カーベル ゲーエムベーハー 操作者の強調された視認のための色の区分けを備える映像システム

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3405354A (en) * 1965-07-19 1968-10-08 Magnetic Analysis Corp Apparatus for limiting phase-angle response range, particularly in eddy current testing apparatus
US3825820A (en) * 1972-10-31 1974-07-23 Magnaflux Corp Gate circuit for non-destructive testing systems for indicating when test signals lie within predetermined limits
US3848182A (en) * 1973-08-15 1974-11-12 Magnetic Analysis Corp Apparatus for limiting phase-angle response range, particularly in eddy current testing apparatus

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4424486A (en) 1980-10-14 1984-01-03 Zetec, Inc. Phase rotation circuit for an eddy current tester

Also Published As

Publication number Publication date
FR2246870B1 (enExample) 1979-03-16
DE2349046A1 (de) 1975-04-10
US3904957A (en) 1975-09-09
JPS539868B2 (enExample) 1978-04-08
FR2246870A1 (enExample) 1975-05-02
JPS5084291A (enExample) 1975-07-08
DE2349046B2 (de) 1976-04-01

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Legal Events

Date Code Title Description
PS Patent sealed [section 19, patents act 1949]
PCNP Patent ceased through non-payment of renewal fee