IT1074117B - Bobina di prova per correnti parassite a poli divisi - Google Patents
Bobina di prova per correnti parassite a poli divisiInfo
- Publication number
- IT1074117B IT1074117B IT50681/76A IT5068176A IT1074117B IT 1074117 B IT1074117 B IT 1074117B IT 50681/76 A IT50681/76 A IT 50681/76A IT 5068176 A IT5068176 A IT 5068176A IT 1074117 B IT1074117 B IT 1074117B
- Authority
- IT
- Italy
- Prior art keywords
- test coil
- current poles
- detached
- detached current
- poles
- Prior art date
Links
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F17/00—Fixed inductances of the signal type
- H01F17/04—Fixed inductances of the signal type with magnetic core
-
- 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
- G01N27/9006—Details, e.g. in the structure or functioning of sensors
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F17/00—Fixed inductances of the signal type
- H01F17/0006—Printed inductances
- H01F2017/0053—Printed inductances with means to reduce eddy currents
Landscapes
- Chemical & Material Sciences (AREA)
- Power Engineering (AREA)
- Engineering & Computer Science (AREA)
- Health & Medical Sciences (AREA)
- Immunology (AREA)
- Life Sciences & Earth Sciences (AREA)
- Analytical Chemistry (AREA)
- Biochemistry (AREA)
- General Health & Medical Sciences (AREA)
- General Physics & Mathematics (AREA)
- Physics & Mathematics (AREA)
- Pathology (AREA)
- Electrochemistry (AREA)
- Microelectronics & Electronic Packaging (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Investigating Or Analyzing Materials By The Use Of Magnetic Means (AREA)
- Coils Or Transformers For Communication (AREA)
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US05/601,203 US4002967A (en) | 1975-08-01 | 1975-08-01 | Annular eddy current test coil with magnetic laminations adjacent a limited circumferential extent |
Publications (1)
Publication Number | Publication Date |
---|---|
IT1074117B true IT1074117B (it) | 1985-04-17 |
Family
ID=24406610
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
IT50681/76A IT1074117B (it) | 1975-08-01 | 1976-07-29 | Bobina di prova per correnti parassite a poli divisi |
Country Status (7)
Country | Link |
---|---|
US (1) | US4002967A (it) |
JP (1) | JPS5219259A (it) |
AU (1) | AU496953B2 (it) |
DE (1) | DE2634201C3 (it) |
FR (1) | FR2319899A1 (it) |
GB (1) | GB1531825A (it) |
IT (1) | IT1074117B (it) |
Families Citing this family (18)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE2746568A1 (de) * | 1977-10-17 | 1979-04-26 | Kraftwerk Union Ag | Wirbelstrompruefsonde zur pruefung ferromagnetischer werkstoffe |
US4203069A (en) * | 1977-12-29 | 1980-05-13 | Electric Power Research Institute, Inc. | Method and apparatus for non-destructively testing electrically conductive elongate cylindrical components using an eddy current producing coil with a rotor to concentrate the magnetic field in a selected area |
JPS59110867A (ja) * | 1982-12-15 | 1984-06-26 | Seijiro Matsumura | 超長軸水車の発電装置 |
US4659990A (en) * | 1983-05-10 | 1987-04-21 | Magnaflux Corporation | Eddy current test system including a member of high permeability material effective to concentrate flux in a very small region of a part |
JPS6050577U (ja) * | 1983-09-13 | 1985-04-09 | 松下電器産業株式会社 | テレビ付インタ−ホン装置 |
JPS60182905A (ja) * | 1984-03-02 | 1985-09-18 | 東京シ−エム株式会社 | ヤツケ兼手提バツグ |
US4683430A (en) * | 1984-06-27 | 1987-07-28 | Republic Steel Corporation | Eddy current flaw detector method and apparatus having a rotatable high permeability flux concentrator encircling a workpiece |
ZA871964B (it) * | 1986-03-25 | 1987-09-07 | ||
US4806863A (en) * | 1986-10-17 | 1989-02-21 | Westinghouse Electric Corp. | Eddy current apparatus including cylindrical coil with flux concentrator for high resolution detection of flaws in conductive objects |
US4929897A (en) * | 1987-11-23 | 1990-05-29 | Crucible Societe Anonyme | Method and apparatus for detecting cross sectional area variations in a elongate object by measuring radial magnetic flux variations using spaced-apart coils |
US5036277A (en) * | 1987-11-23 | 1991-07-30 | Crucible Societe Anonyme | Method of and apparatus for detecting cross sectional area variations in an elongate object by the non-inductive measurement of radial flux variations |
US5307042A (en) * | 1992-02-19 | 1994-04-26 | B&D Liquidation Corp. | Search coil frame assembly for metal and method for making same |
DE69330265T2 (de) * | 1992-11-25 | 2002-02-07 | Simmonds Precision Products Inc., Akron | Datenverarbeitungsstrukturen und Methoden |
US5515041A (en) * | 1993-06-14 | 1996-05-07 | Simmonds Precision Products Inc. | Composite shaft monitoring system |
US5602540A (en) * | 1993-06-14 | 1997-02-11 | Simmonds Precision Products Inc. | Fluid gauging apparatus with inductive interrogation |
US5446382A (en) * | 1993-06-23 | 1995-08-29 | The Babcock & Wilcox Company | Eddy current probe having one yoke within another yoke for increased inspection depth, sensitivity and discrimination |
US6951133B2 (en) * | 2000-11-15 | 2005-10-04 | Passarelli Jr Frank | Electromagnetic acoustic transducer with recessed coils |
WO2006113459A2 (en) * | 2005-04-13 | 2006-10-26 | Crane Co. | Current sensor |
Family Cites Families (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2351595A (en) * | 1940-05-23 | 1944-06-20 | Magnetic Products Corp | Magnetic testing device |
FR914595A (fr) * | 1945-09-18 | 1946-10-11 | Shell Dev | Détecteur de félures pour éléments tubulaires |
GB991890A (en) * | 1960-12-21 | 1965-05-12 | British Non Ferrous Metals Res | Improvements relating to search coil assemblies for eddy current testing |
US3518533A (en) * | 1966-02-14 | 1970-06-30 | Essem Metotest Ab | Electroinductive sensing device with adjustable coil |
US3500181A (en) * | 1967-04-21 | 1970-03-10 | Armco Steel Corp | Eddy current flow detection apparatus utilizing a plurality of circumferential sensors |
US3916302A (en) * | 1973-11-12 | 1975-10-28 | Combustion Eng | Multi-coil eddy current probe for determining angular location of irregularity in cylindrical test member |
-
1975
- 1975-08-01 US US05/601,203 patent/US4002967A/en not_active Expired - Lifetime
-
1976
- 1976-07-09 AU AU15751/76A patent/AU496953B2/en not_active Expired
- 1976-07-19 GB GB29975/76A patent/GB1531825A/en not_active Expired
- 1976-07-27 DE DE2634201A patent/DE2634201C3/de not_active Expired
- 1976-07-29 IT IT50681/76A patent/IT1074117B/it active
- 1976-07-30 JP JP51091250A patent/JPS5219259A/ja active Granted
- 1976-07-30 FR FR7623379A patent/FR2319899A1/fr active Granted
Also Published As
Publication number | Publication date |
---|---|
JPS5219259A (en) | 1977-02-14 |
DE2634201C3 (de) | 1981-01-22 |
JPS5611215B2 (it) | 1981-03-12 |
AU1575176A (en) | 1978-01-12 |
US4002967A (en) | 1977-01-11 |
DE2634201A1 (de) | 1977-02-03 |
FR2319899B1 (it) | 1979-07-06 |
GB1531825A (en) | 1978-11-08 |
DE2634201B2 (de) | 1980-04-24 |
AU496953B2 (en) | 1978-11-16 |
FR2319899A1 (fr) | 1977-02-25 |
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