FR2406824A1 - Appareil d'essai non destructif a ultrasons - Google Patents
Appareil d'essai non destructif a ultrasonsInfo
- Publication number
- FR2406824A1 FR2406824A1 FR7829802A FR7829802A FR2406824A1 FR 2406824 A1 FR2406824 A1 FR 2406824A1 FR 7829802 A FR7829802 A FR 7829802A FR 7829802 A FR7829802 A FR 7829802A FR 2406824 A1 FR2406824 A1 FR 2406824A1
- Authority
- FR
- France
- Prior art keywords
- pole piece
- transmitting
- mounted coaxially
- receiving coils
- utilises
- 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
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B06—GENERATING OR TRANSMITTING MECHANICAL VIBRATIONS IN GENERAL
- B06B—METHODS OR APPARATUS FOR GENERATING OR TRANSMITTING MECHANICAL VIBRATIONS OF INFRASONIC, SONIC, OR ULTRASONIC FREQUENCY, e.g. FOR PERFORMING MECHANICAL WORK IN GENERAL
- B06B1/00—Methods or apparatus for generating mechanical vibrations of infrasonic, sonic, or ultrasonic frequency
- B06B1/02—Methods or apparatus for generating mechanical vibrations of infrasonic, sonic, or ultrasonic frequency making use of electrical energy
- B06B1/04—Methods or apparatus for generating mechanical vibrations of infrasonic, sonic, or ultrasonic frequency making use of electrical energy operating with electromagnetism
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N29/00—Investigating or analysing materials by the use of ultrasonic, sonic or infrasonic waves; Visualisation of the interior of objects by transmitting ultrasonic or sonic waves through the object
- G01N29/22—Details, e.g. general constructional or apparatus details
- G01N29/24—Probes
- G01N29/2412—Probes using the magnetostrictive properties of the material to be examined, e.g. electromagnetic acoustic transducers [EMAT]
Landscapes
- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Health & Medical Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Chemical & Material 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 Ultrasonic Waves (AREA)
Abstract
L'invention concerne les appareils d'essai électromagnétoacoustique. Elle se rapporte à un appareil qui comprend un pôle central 1 entouré d'un pôle tu ulaire externe 3, et des bobines émettrice et réceptrice 16 et 17 placées prés de la face polaire 11 du pôle 1. La face polaire 12 du pôle externe 3 est disposée suivant une surface courbe, concentrée dans des régions diamétralement opposées le long d'un axe magnétique perpendiculaire à une ligne de courbure de la face polaire 12. Application aux essais non destructifs de pièces métalliques.
Priority Applications (5)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB7842501A GB2008200B (en) | 1977-11-09 | 1978-10-30 | Source of vacuum and device for creating and maintaining anegative pressure in an enclosure |
GB8104428A GB2066376B (en) | 1977-11-09 | 1978-10-30 | Source of vacuum and device for creating and maintaining a negative pressure in an enclosure |
US05/957,286 US4287819A (en) | 1977-11-09 | 1978-11-02 | Source of vacuum and device for maintaining a negative pressure in an enclosure |
DE2848433A DE2848433C2 (de) | 1977-11-09 | 1978-11-08 | Sauggerät |
JP13683578A JPS5477494A (en) | 1977-11-09 | 1978-11-08 | Pressure reducing device and device for generating and retaining negative pressure of sealed article |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB4361277 | 1977-10-20 |
Publications (2)
Publication Number | Publication Date |
---|---|
FR2406824A1 true FR2406824A1 (fr) | 1979-05-18 |
FR2406824B1 FR2406824B1 (fr) | 1983-11-18 |
Family
ID=10429529
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
FR7829802A Granted FR2406824A1 (fr) | 1977-10-20 | 1978-10-19 | Appareil d'essai non destructif a ultrasons |
Country Status (8)
Country | Link |
---|---|
BE (1) | BE871341A (fr) |
DE (1) | DE2845579A1 (fr) |
DK (1) | DK465778A (fr) |
FR (1) | FR2406824A1 (fr) |
IE (1) | IE47295B1 (fr) |
IT (1) | IT1100970B (fr) |
LU (1) | LU80398A1 (fr) |
NL (1) | NL7810530A (fr) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE4204643C1 (fr) * | 1992-02-15 | 1993-05-19 | Fraunhofer-Gesellschaft Zur Foerderung Der Angewandten Forschung Ev, 8000 Muenchen, De |
Families Citing this family (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE3128825C2 (de) * | 1981-07-21 | 1985-04-18 | Nukem Gmbh, 6450 Hanau | Vorrichtung zur zerstörungsfreien Prüfung von ferromagnetischen Materialien |
US4449408A (en) * | 1982-04-22 | 1984-05-22 | Magnetic Analysis Corporation | EMAT Test apparatus having retractable probe |
DE3218453C2 (de) * | 1982-05-15 | 1984-06-20 | Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V., 8000 München | Elektromagnetischer Ultraschallwandler zur zerstörungsfreien Prüfung von elektrisch leitfähigen Werkstoffen |
DE3448080A1 (de) * | 1984-04-13 | 1986-08-07 | Nukem Gmbh, 6450 Hanau | Elektrodynamischer wandler |
DE3414071C1 (de) * | 1984-04-13 | 1985-04-11 | Nukem Gmbh, 6450 Hanau | Elektrodynamischer Wandler |
DE3603154A1 (de) * | 1986-02-01 | 1987-08-06 | Nukem Gmbh | Elektrodynamischer wandler |
DE4002100A1 (de) * | 1990-01-25 | 1991-08-08 | Nukem Gmbh | Elektrodynamischer wandlerkopf |
DE19549207C2 (de) * | 1995-12-21 | 1997-10-23 | Mannesmann Ag | Prüfkopf zur zerstörungsfreien Prüfung |
Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2245251A5 (en) * | 1973-09-25 | 1975-04-18 | Inst Introskopii | Non-destructive ultrasonic tester of workpieces - has electrically conductive surface for quality control and thickness measurement |
FR2319900A1 (fr) * | 1975-07-28 | 1977-02-25 | Inst Razrabotke Nerazrusha | Procede d'excitation et de reception d'ondes ultrasonores normales et dispositifs pour la mise en oeuvre dudit procede |
LU76511A1 (fr) * | 1977-01-04 | 1977-06-14 |
-
1978
- 1978-10-16 IE IE2052/78A patent/IE47295B1/en unknown
- 1978-10-18 BE BE191178A patent/BE871341A/fr not_active IP Right Cessation
- 1978-10-19 FR FR7829802A patent/FR2406824A1/fr active Granted
- 1978-10-19 DK DK465778A patent/DK465778A/da not_active Application Discontinuation
- 1978-10-19 DE DE19782845579 patent/DE2845579A1/de not_active Withdrawn
- 1978-10-20 NL NL7810530A patent/NL7810530A/xx not_active Application Discontinuation
- 1978-10-20 IT IT28944/78A patent/IT1100970B/it active
- 1978-10-20 LU LU80398A patent/LU80398A1/fr unknown
Patent Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2245251A5 (en) * | 1973-09-25 | 1975-04-18 | Inst Introskopii | Non-destructive ultrasonic tester of workpieces - has electrically conductive surface for quality control and thickness measurement |
FR2319900A1 (fr) * | 1975-07-28 | 1977-02-25 | Inst Razrabotke Nerazrusha | Procede d'excitation et de reception d'ondes ultrasonores normales et dispositifs pour la mise en oeuvre dudit procede |
LU76511A1 (fr) * | 1977-01-04 | 1977-06-14 |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE4204643C1 (fr) * | 1992-02-15 | 1993-05-19 | Fraunhofer-Gesellschaft Zur Foerderung Der Angewandten Forschung Ev, 8000 Muenchen, De |
Also Published As
Publication number | Publication date |
---|---|
IT1100970B (it) | 1985-09-28 |
LU80398A1 (fr) | 1979-03-19 |
BE871341A (fr) | 1979-02-15 |
IE782052L (en) | 1979-04-20 |
NL7810530A (nl) | 1979-04-24 |
DE2845579A1 (de) | 1979-05-17 |
FR2406824B1 (fr) | 1983-11-18 |
IT7828944A0 (it) | 1978-10-20 |
DK465778A (da) | 1979-04-21 |
IE47295B1 (en) | 1984-02-08 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
ST | Notification of lapse |