CA2005609A1 - Magnetic flux measuring method and apparatus for embodying the same - Google Patents

Magnetic flux measuring method and apparatus for embodying the same

Info

Publication number
CA2005609A1
CA2005609A1 CA 2005609 CA2005609A CA2005609A1 CA 2005609 A1 CA2005609 A1 CA 2005609A1 CA 2005609 CA2005609 CA 2005609 CA 2005609 A CA2005609 A CA 2005609A CA 2005609 A1 CA2005609 A1 CA 2005609A1
Authority
CA
Canada
Prior art keywords
magnetic flux
embodying
measuring method
same
coil
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.)
Granted
Application number
CA 2005609
Other languages
French (fr)
Other versions
CA2005609C (en
Inventor
Seigo Ando
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.)
JFE Engineering Corp
Original Assignee
NKK Corp
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 NKK Corp filed Critical NKK Corp
Publication of CA2005609A1 publication Critical patent/CA2005609A1/en
Application granted granted Critical
Publication of CA2005609C publication Critical patent/CA2005609C/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

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  • Investigating Or Analyzing Materials By The Use Of Magnetic Means (AREA)

Abstract

A current of predetermined frequency is fed to a coil wound around a ferromagnetic core through a fixed impedance means. A magnetic flux measurement is per-formed in terms of a level of a DC component of a voltage generated across the coil. A DC bias is added to the current of predetermined frequency, and the resultant current is applied through the fixed impedance means to the coil wound around the ferromagnetic core.
A magnetic flux measurement is performed in terms of a level of a DC component of the voltage across the coil.
A magnetic flux measuring method and apparatus for embodying the same have a high sensitivity in detecting a minute magnetic flux and an improved temperature characteristic because an output voltage little varies against a temperature variation. A magnetic flux measuring method and apparatus for embodying the same, when they are applied to a leakage flux flaw detection using a saturable magnetic flux sensor, is capable of expanding a measuring span of the magnetic flux sensor, thereby to improve a flaw detection performance.
CA 2005609 1988-12-15 1989-12-14 Magnetic flux measuring method and apparatus for embodying the same Expired - Fee Related CA2005609C (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP63-162871 1988-12-15
JP16287188 1988-12-15

Publications (2)

Publication Number Publication Date
CA2005609A1 true CA2005609A1 (en) 1990-06-15
CA2005609C CA2005609C (en) 1994-12-13

Family

ID=15762850

Family Applications (1)

Application Number Title Priority Date Filing Date
CA 2005609 Expired - Fee Related CA2005609C (en) 1988-12-15 1989-12-14 Magnetic flux measuring method and apparatus for embodying the same

Country Status (1)

Country Link
CA (1) CA2005609C (en)

Also Published As

Publication number Publication date
CA2005609C (en) 1994-12-13

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