CA2005609A1 - Magnetic flux measuring method and apparatus for embodying the same - Google Patents
Magnetic flux measuring method and apparatus for embodying the sameInfo
- 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
Links
Landscapes
- 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.
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.
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) |
-
1989
- 1989-12-14 CA CA 2005609 patent/CA2005609C/en not_active Expired - Fee Related
Also Published As
Publication number | Publication date |
---|---|
CA2005609C (en) | 1994-12-13 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
EEER | Examination request | ||
MKLA | Lapsed |