ES451374A1 - Non-destructive testing process and apparatus - Google Patents
Non-destructive testing process and apparatusInfo
- Publication number
- ES451374A1 ES451374A1 ES451374A ES451374A ES451374A1 ES 451374 A1 ES451374 A1 ES 451374A1 ES 451374 A ES451374 A ES 451374A ES 451374 A ES451374 A ES 451374A ES 451374 A1 ES451374 A1 ES 451374A1
- Authority
- ES
- Spain
- Prior art keywords
- parts
- probe
- component
- frequency
- modified
- 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
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
- 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
- G01N27/9046—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 by analysing electrical signals
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F28—HEAT EXCHANGE IN GENERAL
- F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
- F28F2265/00—Safety or protection arrangements; Arrangements for preventing malfunction
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)
Abstract
Non-destructive eddy current control method and device, a procedure of the type in which a probe is moved near the part to be controlled, the probe is fed by an excitation current at n different frequencies; the components at each of the n frequencies are analyzed in the measurement signal provided by the probe; the procedure characterized in that, for each component, its resistive part X is determined in phase with the excitation currents, at the same frequency, and its reactive part Y in quadrature, the parts X1 and Y1 of a component are modified to a first frequency to coincide, in the zone corresponding to a defect of a parameter to be eliminated, with the parts X2 and Y2 of a component at a second frequency; it is removed from the parts X1 and Y1 thus modified, the parts X2 and Y2, which provides a new set of resistive and reactive parts X'or Y', which allow achieving a representative curve for which the contribution of the undesirable parameter has been removed; if the signal of components X'and Y' is shown on a plane. (Machine-translation by Google Translate, not legally binding)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FR7527615A FR2324003A1 (en) | 1975-09-09 | 1975-09-09 | NON DESTRUCTIVE EDD CURRENT CONTROL PROCESS AND CORRESPONDING DEVICE, USING MULTI-FREQUENCY EXCITATION AND ALLOWING THE ELIMINATION OF CERTAIN PARAMETERS |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| ES451374A1 true ES451374A1 (en) | 1977-12-16 |
Family
ID=9159766
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| ES451374A Expired ES451374A1 (en) | 1975-09-09 | 1976-09-09 | Non-destructive testing process and apparatus |
Country Status (14)
| Country | Link |
|---|---|
| JP (1) | JPS602619B2 (en) |
| BE (1) | BE845928A (en) |
| BR (1) | BR7605858A (en) |
| CA (1) | CA1070766A (en) |
| DD (1) | DD126270A5 (en) |
| DE (1) | DE2637201A1 (en) |
| ES (1) | ES451374A1 (en) |
| FI (1) | FI59302C (en) |
| FR (1) | FR2324003A1 (en) |
| GB (1) | GB1521203A (en) |
| IT (1) | IT1074264B (en) |
| NL (1) | NL184387C (en) |
| SE (1) | SE418905B (en) |
| ZA (1) | ZA764982B (en) |
Families Citing this family (24)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2428234A1 (en) * | 1978-06-07 | 1980-01-04 | Tornbloms Kvalitetskontroll Ab | Non-destructive electrically conducting material testing - using magnetic fields of different fields and variable control signal detector (SW 3.7.78) |
| FR2443682A1 (en) * | 1978-12-07 | 1980-07-04 | Commissariat Energie Atomique | CIRCUIT FOR AUTOMATIC CORRECTION OF A SIGNAL TRANSMITTED BY AN IMBALANCE DIFFERENTIAL SENSOR |
| US4292589A (en) * | 1979-05-09 | 1981-09-29 | Schlumberger Technology Corporation | Eddy current method and apparatus for inspecting ferromagnetic tubular members |
| US4303885A (en) * | 1979-06-18 | 1981-12-01 | Electric Power Research Institute, Inc. | Digitally controlled multifrequency eddy current test apparatus and method |
| US4467281A (en) * | 1980-02-29 | 1984-08-21 | Electric Power Research Institute, Inc. | Multi frequency eddy current test apparatus with intermediate frequency processing |
| US4424486A (en) * | 1980-10-14 | 1984-01-03 | Zetec, Inc. | Phase rotation circuit for an eddy current tester |
| JPS5791058U (en) * | 1980-11-25 | 1982-06-04 | ||
| JPS5817354A (en) * | 1981-06-12 | 1983-02-01 | Kobe Steel Ltd | Inspection of pipe material by multifrequency eddy current flaw detection |
| JPS58137748A (en) * | 1982-02-12 | 1983-08-16 | Ishikawajima Harima Heavy Ind Co Ltd | Eddy current examination method |
| DE3313820A1 (en) * | 1983-04-16 | 1984-10-18 | Institut Dr. Friedrich Förster Prüfgerätebau GmbH & Co KG, 7410 Reutlingen | DEVICE FOR TESTING THE SURFACE OF A METAL TEST PART |
| CA1212997A (en) * | 1983-12-16 | 1986-10-21 | Gerard Durou | Frequency scanning eddy current non destructive testing method and system |
| FR2562668B1 (en) * | 1984-04-05 | 1987-11-27 | Sncf | DEVICE FOR TRACKING DEFECTS OF RAILWAY RAILS BY EDGE CURRENTS, CAPABLE OF DISCRIMINATING DEFECTS OF CERTAIN DISCONTINUITIES IN RAIL CONSTRUCTION |
| JPS60262052A (en) * | 1984-06-08 | 1985-12-25 | Sumitomo Metal Ind Ltd | Heterogeneous material discrimination |
| JPS6273158A (en) * | 1985-09-27 | 1987-04-03 | Daizaburo Iwasaki | Signal processing method and apparatus in eddy current flaw detection test |
| JPS62255863A (en) * | 1986-04-28 | 1987-11-07 | Furukawa Electric Co Ltd:The | Eddy current flaw detector |
| SE456864B (en) * | 1986-08-27 | 1988-11-07 | Toernbloms Kvalitetskontroll | DEVICE FOR DETECTING AND SUPPRESSING THE IMPACT OF INTERNATIONAL MAGNETIC FIELD DURING THE VERTICAL FLOW TEST OF OMAGNETIC PROVOBJECTS |
| FR2627862A1 (en) * | 1988-02-26 | 1989-09-01 | Commissariat Energie Atomique | IMPULSIVE FOUCAULT CURRENT MONITORING METHOD AND DEVICE FOR IMPLEMENTING THE SAME |
| US5017869A (en) * | 1989-12-14 | 1991-05-21 | General Electric Company | Swept frequency eddy current system for measuring coating thickness |
| FR2724019B1 (en) * | 1994-08-31 | 1997-04-30 | Intercontrole Sa | METHOD OF DIGITAL ANALYSIS OF A SIGNAL, IN PARTICULAR FOR EDGE CURRENT CONTROL |
| FR2758882B1 (en) * | 1997-01-27 | 1999-04-09 | Intercontrole Sa | METHOD OF NON-DESTRUCTIVE MONITORING BY EDGE CURRENTS OF NUCLEAR REACTOR CONTROL CLUSTERS IN THE PRESENCE OF DISTURBING ELEMENTS |
| US6815957B2 (en) | 2001-09-24 | 2004-11-09 | Alstom (Switzerland) Ltd | Method and device for inspecting laminated iron cores of electrical machines for interlamination shorts |
| PT1430297E (en) * | 2001-09-24 | 2006-11-30 | Alstom Technology Ltd | Method and device for controlling laminated steel sheet stacks of electrical machines in a view to detect steel sheet short-circuits |
| JP4762672B2 (en) * | 2005-10-27 | 2011-08-31 | 非破壊検査株式会社 | Magnetic material bending portion fracture inspection method and inspection apparatus |
| CZ306012B6 (en) * | 2014-09-03 | 2016-06-22 | Vysoké Učení Technické V Brně | Non-destructive indicator of local subsurface non-homogeneities |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3706029A (en) * | 1971-11-16 | 1972-12-12 | Atomic Energy Commission | Multiple parameter eddy current nondestructive testing device using plural transformation rotators to resolve each parameter |
-
1975
- 1975-09-09 FR FR7527615A patent/FR2324003A1/en active Granted
-
1976
- 1976-08-18 DE DE19762637201 patent/DE2637201A1/en active Granted
- 1976-08-19 ZA ZA764982A patent/ZA764982B/en unknown
- 1976-08-27 CA CA260,058A patent/CA1070766A/en not_active Expired
- 1976-08-30 IT IT69113/76A patent/IT1074264B/en active
- 1976-08-31 NL NLAANVRAGE7609666,A patent/NL184387C/en not_active IP Right Cessation
- 1976-09-03 BR BR7605858A patent/BR7605858A/en unknown
- 1976-09-08 FI FI762581A patent/FI59302C/en not_active IP Right Cessation
- 1976-09-08 SE SE7609913A patent/SE418905B/en not_active IP Right Cessation
- 1976-09-08 BE BE170414A patent/BE845928A/en not_active IP Right Cessation
- 1976-09-08 GB GB37174/76A patent/GB1521203A/en not_active Expired
- 1976-09-09 JP JP51108390A patent/JPS602619B2/en not_active Expired
- 1976-09-09 DD DD194716A patent/DD126270A5/xx unknown
- 1976-09-09 ES ES451374A patent/ES451374A1/en not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| BE845928A (en) | 1976-12-31 |
| DE2637201C2 (en) | 1987-10-08 |
| FI59302B (en) | 1981-03-31 |
| FR2324003B1 (en) | 1979-03-02 |
| JPS602619B2 (en) | 1985-01-23 |
| NL7609666A (en) | 1977-03-11 |
| ZA764982B (en) | 1977-07-27 |
| FI59302C (en) | 1981-07-10 |
| DD126270A5 (en) | 1977-07-06 |
| NL184387C (en) | 1989-07-03 |
| DE2637201A1 (en) | 1977-03-17 |
| SE7609913L (en) | 1977-03-10 |
| BR7605858A (en) | 1977-08-16 |
| JPS5233791A (en) | 1977-03-15 |
| FR2324003A1 (en) | 1977-04-08 |
| GB1521203A (en) | 1978-08-16 |
| FI762581A (en) | 1977-03-10 |
| SE418905B (en) | 1981-06-29 |
| CA1070766A (en) | 1980-01-29 |
| IT1074264B (en) | 1985-04-20 |
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