NO974901L - Method and apparatus for measuring ferro-magnetic articles - Google Patents
Method and apparatus for measuring ferro-magnetic articlesInfo
- Publication number
- NO974901L NO974901L NO974901A NO974901A NO974901L NO 974901 L NO974901 L NO 974901L NO 974901 A NO974901 A NO 974901A NO 974901 A NO974901 A NO 974901A NO 974901 L NO974901 L NO 974901L
- Authority
- NO
- Norway
- Prior art keywords
- objects
- magnetic fields
- anomalies
- magnetic articles
- coil
- Prior art date
Links
Landscapes
- Investigating Or Analyzing Materials By The Use Of Magnetic Means (AREA)
Abstract
Fremgangsmåte og innretning for å detektere anomaliteter i gjenstander av ferromagnetiske materialer, kjennetegnet ved at målemidlene (9) omfattter minst én spole (20) som er plassert mot objektet (1) som skal måles, at spolen forsynes med vekselstrøm som induserer virvelstrømmer i gjenstandene som igjen gir magnetiske felt som varierer avhengig av anomalitetene, at de resulterende magnetfeltene detekteres av målemidlene og at de detekterte magnetfeltene er et mål på graden av anomaliteter i gjenstandene (1).Method and device for detecting anomalies in objects of ferromagnetic materials, characterized in that the measuring means (9) comprise at least one coil (20) placed against the object (1) to be measured, that the coil is supplied with alternating current which induces eddy currents in the objects which again, magnetic fields that vary depending on the anomalies, that the resulting magnetic fields are detected by the measuring means and that the detected magnetic fields are a measure of the degree of anomalies in the objects (1).
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
NO974901A NO974901L (en) | 1995-04-24 | 1997-10-23 | Method and apparatus for measuring ferro-magnetic articles |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
PCT/SE1995/000444 WO1996034279A1 (en) | 1995-04-24 | 1995-04-24 | Method and device for measuring ferro-magnetic objects |
NO974901A NO974901L (en) | 1995-04-24 | 1997-10-23 | Method and apparatus for measuring ferro-magnetic articles |
Publications (2)
Publication Number | Publication Date |
---|---|
NO974901D0 NO974901D0 (en) | 1997-10-23 |
NO974901L true NO974901L (en) | 1997-12-23 |
Family
ID=34797881
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
NO974901A NO974901L (en) | 1995-04-24 | 1997-10-23 | Method and apparatus for measuring ferro-magnetic articles |
Country Status (1)
Country | Link |
---|---|
NO (1) | NO974901L (en) |
-
1997
- 1997-10-23 NO NO974901A patent/NO974901L/en not_active Application Discontinuation
Also Published As
Publication number | Publication date |
---|---|
NO974901D0 (en) | 1997-10-23 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
FC2A | Withdrawal, rejection or dismissal of laid open patent application |