DE3773964D1 - Nachweis von magnetischen unstetigkeiten. - Google Patents
Nachweis von magnetischen unstetigkeiten.Info
- Publication number
- DE3773964D1 DE3773964D1 DE8787301359T DE3773964T DE3773964D1 DE 3773964 D1 DE3773964 D1 DE 3773964D1 DE 8787301359 T DE8787301359 T DE 8787301359T DE 3773964 T DE3773964 T DE 3773964T DE 3773964 D1 DE3773964 D1 DE 3773964D1
- Authority
- DE
- Germany
- Prior art keywords
- discontencies
- magnetic
- detection
- magnetic discontencies
- 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.)
- Expired - Fee Related
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
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)
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB868606564A GB8606564D0 (en) | 1986-03-17 | 1986-03-17 | Magnetic discontinuity detection |
Publications (1)
Publication Number | Publication Date |
---|---|
DE3773964D1 true DE3773964D1 (de) | 1991-11-28 |
Family
ID=10594748
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DE8787301359T Expired - Fee Related DE3773964D1 (de) | 1986-03-17 | 1987-02-17 | Nachweis von magnetischen unstetigkeiten. |
Country Status (5)
Country | Link |
---|---|
US (1) | US4814705A (de) |
EP (1) | EP0238209B1 (de) |
DE (1) | DE3773964D1 (de) |
ES (1) | ES2026525T3 (de) |
GB (2) | GB8606564D0 (de) |
Families Citing this family (34)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB2203549B (en) * | 1987-04-15 | 1991-05-01 | Julian Marsden Carroll | Metal corrosion detection |
GB2218206A (en) * | 1988-05-06 | 1989-11-08 | Julian Marsden Carroll | Detection of wall ties and their condition |
US5195377A (en) * | 1990-04-17 | 1993-03-23 | Garshelis Ivan J | Magnetoelastic force transducer for sensing force applied to a ferromagnetic member using leakage flux measurement |
DE9011477U1 (de) * | 1990-08-07 | 1990-12-20 | Nukem GmbH, 63755 Alzenau | Anordnung zur zerstörungsfreien Werkstoffprüfung |
DE4103216A1 (de) * | 1991-02-02 | 1992-08-06 | Hilti Ag | Einrichtung zum auffinden magnetisierbaren materials in bauwerken |
WO1992014145A1 (fr) * | 1991-02-04 | 1992-08-20 | Nkk Corporation | Procede d'inspection magnetique et dispositif prevu a cet effet |
US5532587A (en) * | 1991-12-16 | 1996-07-02 | Vetco Pipeline Services, Inc. | Magnetic field analysis method and apparatus for determining stress characteristics in a pipeline |
GB9202846D0 (en) * | 1992-02-11 | 1992-03-25 | Silver Wing Limited | Method and apparatus for discontinuity detection in magnetisable material |
US5619136A (en) * | 1992-02-11 | 1997-04-08 | Silverwing, Limited | Detection of discontinuities below the surface of magnetizable material using differentially coupled sensors to detect magnetic flux leakage |
US5327083A (en) * | 1992-03-19 | 1994-07-05 | Allegheny Ludlum Corporation | Method and apparatus using magnetic flux scanning to test grain structure of magnetic sheet material |
DK169956B1 (da) * | 1992-03-23 | 1995-04-10 | Force Inst | Fremgangsmåde og apparat til detektion af magnetiske diskontinuiteter i et prøveemne af magnetisk materiale |
US5444372A (en) * | 1992-07-22 | 1995-08-22 | Biomagnetic Technologies, Inc. | Magnetometer and method of measuring a magnetic field |
US5570017A (en) * | 1992-09-30 | 1996-10-29 | Canada Conveyor Belt Co., Inc. | Apparatus and method of damage detection for magnetically permeable members using an alternating magnetic field and hall effect sensors |
EP0624793A1 (de) * | 1993-05-03 | 1994-11-17 | Tuboscope Vetco (Deutschland) Gmbh | Verfahren und Gerät zur Ermittlung von magnetischen Unstetigkeiten in einer Probe aus magnetisierbarem Material |
US5514956A (en) * | 1994-10-11 | 1996-05-07 | Industrial Sensors And Actuators | Release mechanism for high-magnetization magnetic inspection apparatus for use in inspecting storage tank bottoms |
US5614825A (en) * | 1994-11-28 | 1997-03-25 | Industrial Sensors And Actuators | Magnetic flux leakage inspection apparatus with surface-responsive sensor mounting |
AUPN992596A0 (en) | 1996-05-17 | 1996-06-13 | Technological Resources Pty Limited | Magnetic detection of discontinuities in magnetic materials |
CA2236636C (en) * | 1997-05-29 | 2007-01-09 | Tech Restoration Services, Inc. | Method and apparatus for detecting tendon failures within prestressed concrete |
GB0005945D0 (en) * | 2000-03-14 | 2000-05-03 | British Nuclear Fuels Plc | Improvements in and relating to investigating current |
GB0005946D0 (en) * | 2000-03-14 | 2000-05-03 | British Nuclear Fuels Plc | Improvements in and relating to investigating corrosion |
JP2004513365A (ja) | 2000-11-09 | 2004-04-30 | ブリティッシュ ニュークリア フュエルス ピーエルシー | 複数の電気的抵抗測定(フィールドシグニチャー方法、電気抵抗断層撮影法)の手段による、物質の損失を誘発した腐食のモニタリング |
GB0112983D0 (en) * | 2001-05-30 | 2001-07-18 | Advanced Eng Solutions Ltd | Pipe condition detecting apparatus |
CN101358688B (zh) * | 2008-09-12 | 2013-01-23 | 东北石油大学 | 一种直流电机驱动的可变径管道外漏磁检测仪 |
US8493064B2 (en) | 2010-08-24 | 2013-07-23 | United Western Technologies Corporation | Apparatus, system, and method for maintaining normalcy of a sensor with respect to a structure |
US8513943B2 (en) | 2010-08-24 | 2013-08-20 | United Western Technologies Corporation | Apparatus, system, and method for scanning a surface |
US9651353B2 (en) * | 2012-07-24 | 2017-05-16 | International Business Machines Corporation | Calibration free distance sensor |
RU2519473C1 (ru) * | 2013-02-14 | 2014-06-10 | Открытое Акционерное Общество "Российские Железные Дороги" | Способ измерения и контроля намагниченности рельсов |
US9624743B2 (en) | 2014-06-06 | 2017-04-18 | Saudi Arabian Oil Company | Electrodynamic and electromagnetic suspension system tractor |
DE102014212499A1 (de) | 2014-06-27 | 2015-12-31 | Institut Dr. Foerster Gmbh & Co. Kg | Verfahren und Vorrichtung zur Streuflussprüfung |
CN104502444B (zh) * | 2014-12-01 | 2017-12-29 | 华中科技大学 | 一种管道缺陷扫查装置 |
JP6782931B2 (ja) * | 2017-09-27 | 2020-11-11 | 日立造船株式会社 | 渦電流探傷装置 |
JP6782930B2 (ja) * | 2017-09-27 | 2020-11-11 | 日立造船株式会社 | 渦電流探傷装置 |
US11112382B2 (en) * | 2018-03-21 | 2021-09-07 | Infrastructure Preservation Corporation | Robotic magnetic flux inspection system for bridge wire rope suspender cables |
US20220260529A1 (en) * | 2019-03-21 | 2022-08-18 | Infrastructure Preservation Corporation | Robotic magnetic flux inspection system for broadcast tower support cables |
Family Cites Families (15)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2549916A (en) * | 1948-07-28 | 1951-04-24 | Sperry Prod Inc | Rail flaw detector mechanism |
US3015063A (en) * | 1960-06-23 | 1961-12-26 | Camco Inc | Magnetic caliper |
US3284701A (en) * | 1962-09-28 | 1966-11-08 | Camco Inc | Magnetic testing apparatus for measuring internal diameter and surface variations in wall casing |
GB1169752A (en) * | 1965-12-04 | 1969-11-05 | Sumitomo Metal Ind | Magnetic Inspecting Apparatus |
US3484682A (en) * | 1967-08-22 | 1969-12-16 | American Mach & Foundry | Apparatus and method to detect defects masked by cyclic magnetic patterns in ferromagnetic pipe |
GB1261346A (en) * | 1968-03-13 | 1972-01-26 | Atomic Energy Authority Uk | Improvements in or relating to the detection of magnetic discontinuities |
US3745452A (en) * | 1971-02-23 | 1973-07-10 | J Osburn | Magnetic field gradient apparatus and method for detecting pipe line corrosion |
US4087749A (en) * | 1977-01-25 | 1978-05-02 | The United States Of America As Represented By The Secretary Of The Army | Method and apparatus for normalizing the outputs of sequentially scanned magnetic flaw detectors |
FR2459476A1 (fr) * | 1979-06-14 | 1981-01-09 | Siderurgie Fse Inst Rech | Procede et dispositif d'inspection de produits metalliques par courants de foucault |
US4523148A (en) * | 1980-10-20 | 1985-06-11 | Gearhart Industries, Inc. | Method and apparatus for determining the spontaneous earth potential log from downhole gradient measurements |
US4573013A (en) * | 1982-03-29 | 1986-02-25 | The United States Of America As Represented By The Secretary Of Transportation | Magnetic inspection of reinforcing steel rods in prestressed concrete |
DE3213267A1 (de) * | 1982-04-08 | 1983-10-20 | Nukem Gmbh, 6450 Hanau | Verfahren und vorrichtung zur pruefung von werkstoffen nach dem wirbelstromprinzip |
US4634976A (en) * | 1983-05-05 | 1987-01-06 | American Stress Technologies, Inc. | Barkhausen noise method for stress and defect detecting in hard steel |
GB2159954A (en) * | 1984-06-06 | 1985-12-11 | British Gas Corp | Apparatus, system and method for detecting a discontinuity in a pipe or conduit |
US4648041A (en) * | 1985-06-24 | 1987-03-03 | The United States Of America As Represented By The Secretary Of The Navy | Method of measuring magnetic effects due to eddy currents |
-
1986
- 1986-03-17 GB GB868606564A patent/GB8606564D0/en active Pending
-
1987
- 1987-02-17 ES ES198787301359T patent/ES2026525T3/es not_active Expired - Lifetime
- 1987-02-17 DE DE8787301359T patent/DE3773964D1/de not_active Expired - Fee Related
- 1987-02-17 GB GB8703652A patent/GB2188156B/en not_active Expired - Fee Related
- 1987-02-17 EP EP87301359A patent/EP0238209B1/de not_active Expired
- 1987-02-19 US US07/016,576 patent/US4814705A/en not_active Expired - Fee Related
Also Published As
Publication number | Publication date |
---|---|
EP0238209B1 (de) | 1991-10-23 |
ES2026525T3 (es) | 1992-05-01 |
GB8606564D0 (en) | 1986-04-23 |
EP0238209A2 (de) | 1987-09-23 |
US4814705A (en) | 1989-03-21 |
GB2188156A (en) | 1987-09-23 |
GB2188156B (en) | 1990-06-13 |
GB8703652D0 (en) | 1987-03-25 |
EP0238209A3 (en) | 1988-06-22 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
8364 | No opposition during term of opposition | ||
8327 | Change in the person/name/address of the patent owner |
Owner name: AEA TECHNOLOGY PLC, DIDCOT, OXFORDSHIRE, GB |
|
8339 | Ceased/non-payment of the annual fee |