DE1773493C3 - Vorrichtung zum zerstörungsfreien Prüfen von Rohren aus elektrisch leitendem Material - Google Patents

Vorrichtung zum zerstörungsfreien Prüfen von Rohren aus elektrisch leitendem Material

Info

Publication number
DE1773493C3
DE1773493C3 DE1773493A DE1773493A DE1773493C3 DE 1773493 C3 DE1773493 C3 DE 1773493C3 DE 1773493 A DE1773493 A DE 1773493A DE 1773493 A DE1773493 A DE 1773493A DE 1773493 C3 DE1773493 C3 DE 1773493C3
Authority
DE
Germany
Prior art keywords
hartley
coil
pipe
tested
oscillators
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
DE1773493A
Other languages
German (de)
English (en)
Other versions
DE1773493A1 (de
DE1773493B2 (de
Inventor
Jean-Pierre Aix-En-Provence Dufayet (Frankreich)
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.)
Commissariat a lEnergie Atomique et aux Energies Alternatives CEA
Original Assignee
Commissariat a lEnergie Atomique CEA
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 FR107736A external-priority patent/FR92982E/fr
Application filed by Commissariat a lEnergie Atomique CEA filed Critical Commissariat a lEnergie Atomique CEA
Publication of DE1773493A1 publication Critical patent/DE1773493A1/de
Publication of DE1773493B2 publication Critical patent/DE1773493B2/de
Application granted granted Critical
Publication of DE1773493C3 publication Critical patent/DE1773493C3/de
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
    • 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

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)
DE1773493A 1967-05-25 1968-05-24 Vorrichtung zum zerstörungsfreien Prüfen von Rohren aus elektrisch leitendem Material Expired DE1773493C3 (de)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR107736A FR92982E (fr) 1966-01-11 1967-05-25 Procédé de controle non destructif par courants de foucault de tubes conducteurs de l'électricité, et appareil correspondant.

Publications (3)

Publication Number Publication Date
DE1773493A1 DE1773493A1 (de) 1971-08-26
DE1773493B2 DE1773493B2 (de) 1974-11-28
DE1773493C3 true DE1773493C3 (de) 1975-07-31

Family

ID=8631541

Family Applications (1)

Application Number Title Priority Date Filing Date
DE1773493A Expired DE1773493C3 (de) 1967-05-25 1968-05-24 Vorrichtung zum zerstörungsfreien Prüfen von Rohren aus elektrisch leitendem Material

Country Status (7)

Country Link
US (1) US3543145A (enExample)
BE (1) BE714379A (enExample)
CH (1) CH491384A (enExample)
DE (1) DE1773493C3 (enExample)
ES (1) ES354275A1 (enExample)
GB (1) GB1154300A (enExample)
LU (1) LU56053A1 (enExample)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3109445C2 (de) * 1981-03-12 1985-05-09 Rheinmetall GmbH, 4000 Düsseldorf Vorrichtung zum Feststellen und Anzeigen der Lage und Tiefe einer Unebenheit einer Rohrinnenoberfläche
US4567437A (en) * 1983-06-10 1986-01-28 Hubbard Lincoln W Dual oscillator method for detecting flaws in a moving chain
US5497147A (en) * 1993-06-21 1996-03-05 Microstrain, Company Differential variable reluctance transducer
RU2159425C1 (ru) * 1999-10-14 2000-11-20 Государственное унитарное предприятие Центр внедрения новой техники и технологий "Транспорт" Способ электроиндукционной дефектоскопии материалов

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3135914A (en) * 1959-09-04 1964-06-02 Magnetic Analysis Corp Multi-frequency testing method and apparatus for selectively detecting flaws at different depths
FR1255436A (fr) * 1960-01-26 1961-03-10 Siderurgie Fse Inst Rech Perfectionnements aux appareils électro-magnétiques de détection des défauts des produits métalliques
US3146395A (en) * 1962-02-23 1964-08-25 Assembly Products Inc Magnetic flaw detection apparatus with excitation and sensing coils mounted on nutating head
US3449661A (en) * 1963-12-11 1969-06-10 Magnaflux Corp Eddy current testing system having lift-off compensation,and utilizing a tuned plate-tuned grid oscillator
US3273055A (en) * 1965-10-18 1966-09-13 Api Instr Company Constant impedance dual circuits for sample material flaw detection

Also Published As

Publication number Publication date
LU56053A1 (enExample) 1968-09-04
GB1154300A (en) 1969-06-04
DE1773493A1 (de) 1971-08-26
ES354275A1 (es) 1970-04-16
US3543145A (en) 1970-11-24
BE714379A (enExample) 1968-09-16
CH491384A (fr) 1970-05-31
DE1773493B2 (de) 1974-11-28

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Legal Events

Date Code Title Description
C3 Grant after two publication steps (3rd publication)
E77 Valid patent as to the heymanns-index 1977
EHJ Ceased/non-payment of the annual fee