NL7603094A - Nondestructive test appts. for electrically conductive element - includes magnetic field generator inducing eddy currents in element which are sensed to provide indication of fault - Google Patents

Nondestructive test appts. for electrically conductive element - includes magnetic field generator inducing eddy currents in element which are sensed to provide indication of fault

Info

Publication number
NL7603094A
NL7603094A NL7603094A NL7603094A NL7603094A NL 7603094 A NL7603094 A NL 7603094A NL 7603094 A NL7603094 A NL 7603094A NL 7603094 A NL7603094 A NL 7603094A NL 7603094 A NL7603094 A NL 7603094A
Authority
NL
Netherlands
Prior art keywords
eddy currents
sensed
fault
magnetic field
electrically conductive
Prior art date
Application number
NL7603094A
Other languages
Dutch (nl)
Other versions
NL172595C (en
NL172595B (en
Original Assignee
Mo Energet I En Nii Introskopi
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 Mo Energet I En Nii Introskopi filed Critical Mo Energet I En Nii Introskopi
Priority to NL7603094A priority Critical patent/NL172595C/en
Publication of NL7603094A publication Critical patent/NL7603094A/en
Publication of NL172595B publication Critical patent/NL172595B/en
Application granted granted Critical
Publication of NL172595C publication Critical patent/NL172595C/en

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)

Abstract

A non-destructive testing technique uses eddy currents for investigating elongated components made from electrically conducting materials. It is used in metallurgically rolled producst, in machine tools, nuclear technology, the production of vacuum tubes and in electronic systems for automatic quality control. The elongated object is passed through an electronic system and bombarded with a signal. There is a signal analyser (17) and a meter (18) which determines the lengths of sections of the object with deficiencies. there is a subsidiary deficiency counter (19) and a main deficiency counter (20). There is also a sorting circuit (28) a quality indicator (29) and a converter (30). The signals are fed to an oscilloscope (31), whose synchronisation input is connected to the length code via a frequency divider (37).
NL7603094A 1976-03-24 1976-03-24 Apparatus for the non-destructive examination of elongated articles manufactured from conductive materials. NL172595C (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
NL7603094A NL172595C (en) 1976-03-24 1976-03-24 Apparatus for the non-destructive examination of elongated articles manufactured from conductive materials.

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
NL7603094A NL172595C (en) 1976-03-24 1976-03-24 Apparatus for the non-destructive examination of elongated articles manufactured from conductive materials.

Publications (3)

Publication Number Publication Date
NL7603094A true NL7603094A (en) 1977-09-27
NL172595B NL172595B (en) 1983-04-18
NL172595C NL172595C (en) 1983-09-16

Family

ID=19825872

Family Applications (1)

Application Number Title Priority Date Filing Date
NL7603094A NL172595C (en) 1976-03-24 1976-03-24 Apparatus for the non-destructive examination of elongated articles manufactured from conductive materials.

Country Status (1)

Country Link
NL (1) NL172595C (en)

Also Published As

Publication number Publication date
NL172595C (en) 1983-09-16
NL172595B (en) 1983-04-18

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Legal Events

Date Code Title Description
V1 Lapsed because of non-payment of the annual fee