FR2406824B1 - - Google Patents
Info
- Publication number
- FR2406824B1 FR2406824B1 FR7829802A FR7829802A FR2406824B1 FR 2406824 B1 FR2406824 B1 FR 2406824B1 FR 7829802 A FR7829802 A FR 7829802A FR 7829802 A FR7829802 A FR 7829802A FR 2406824 B1 FR2406824 B1 FR 2406824B1
- Authority
- FR
- France
- 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
-
- 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)
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 FR2406824A1 (fr) | 1979-05-18 |
FR2406824B1 true 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) |
Families Citing this family (9)
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 |
DE3414071C1 (de) * | 1984-04-13 | 1985-04-11 | Nukem Gmbh, 6450 Hanau | Elektrodynamischer Wandler |
DE3448080A1 (de) * | 1984-04-13 | 1986-08-07 | 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 |
DE4204643C1 (fr) * | 1992-02-15 | 1993-05-19 | Fraunhofer-Gesellschaft Zur Foerderung Der Angewandten Forschung Ev, 8000 Muenchen, De | |
DE19549207C2 (de) * | 1995-12-21 | 1997-10-23 | Mannesmann Ag | Prüfkopf zur zerstörungsfreien Prüfung |
Family Cites Families (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 |
SU590660A1 (ru) * | 1975-07-28 | 1978-01-30 | Всесоюзный Научно-Исследовательский Институт По Разработке Неразрушающих Методов И Средств Контроля Качества Материалов | Электромагнитно-акустический преобразователь |
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 DE DE19782845579 patent/DE2845579A1/de not_active Withdrawn
- 1978-10-19 DK DK465778A patent/DK465778A/da not_active Application Discontinuation
- 1978-10-20 IT IT28944/78A patent/IT1100970B/it active
- 1978-10-20 NL NL7810530A patent/NL7810530A/xx not_active Application Discontinuation
- 1978-10-20 LU LU80398A patent/LU80398A1/fr unknown
Also Published As
Publication number | Publication date |
---|---|
LU80398A1 (fr) | 1979-03-19 |
IE47295B1 (en) | 1984-02-08 |
DE2845579A1 (de) | 1979-05-17 |
IT7828944A0 (it) | 1978-10-20 |
DK465778A (da) | 1979-04-21 |
BE871341A (fr) | 1979-02-15 |
IE782052L (en) | 1979-04-20 |
IT1100970B (it) | 1985-09-28 |
NL7810530A (nl) | 1979-04-24 |
FR2406824A1 (fr) | 1979-05-18 |
Similar Documents
Legal Events
Date | Code | Title | Description |
---|---|---|---|
ST | Notification of lapse |