FR2427754A1 - Capteur d'emission acoustique notamment pour guide d'ondes - Google Patents
Capteur d'emission acoustique notamment pour guide d'ondesInfo
- Publication number
- FR2427754A1 FR2427754A1 FR7816556A FR7816556A FR2427754A1 FR 2427754 A1 FR2427754 A1 FR 2427754A1 FR 7816556 A FR7816556 A FR 7816556A FR 7816556 A FR7816556 A FR 7816556A FR 2427754 A1 FR2427754 A1 FR 2427754A1
- Authority
- FR
- France
- Prior art keywords
- nuclear reactor
- metallic structure
- acoustic waveguide
- utilises
- condition monitor
- 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
- 239000004020 conductor Substances 0.000 abstract 4
- 235000010603 pastilles Nutrition 0.000 abstract 1
- 230000000284 resting effect Effects 0.000 abstract 1
Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
- H04R17/00—Piezoelectric transducers; Electrostrictive transducers
- H04R17/02—Microphones
-
- 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
- B06B1/06—Methods or apparatus for generating mechanical vibrations of infrasonic, sonic, or ultrasonic frequency making use of electrical energy operating with piezoelectric effect or with electrostriction
- B06B1/0644—Methods or apparatus for generating mechanical vibrations of infrasonic, sonic, or ultrasonic frequency making use of electrical energy operating with piezoelectric effect or with electrostriction using a single piezoelectric element
- B06B1/0662—Methods or apparatus for generating mechanical vibrations of infrasonic, sonic, or ultrasonic frequency making use of electrical energy operating with piezoelectric effect or with electrostriction using a single piezoelectric element with an electrode on the sensitive surface
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Physics & Mathematics (AREA)
- Acoustics & Sound (AREA)
- Signal Processing (AREA)
- Monitoring And Testing Of Nuclear Reactors (AREA)
Abstract
Capteur d'émission acoustique de longueur d'onde lambda . Il comprend deux pastilles piézoélectriques juxtaposées de même épaisseur lambda /2 et de polarisation opposée, séparées par une feuille électriquement isolante, les deux faces extrêmes opposées des pastilles étant reliées à la masse, le signal électrique traduisant l'émission acoustique étant prélevé sur les deux faces en regard de part et d'autre de ladite feuille isolante. Application à la surveillance des défauts des cuves d'acier de réacteurs nucléaires.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR7816556A FR2427754A1 (fr) | 1978-06-02 | 1978-06-02 | Capteur d'emission acoustique notamment pour guide d'ondes |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR7816556A FR2427754A1 (fr) | 1978-06-02 | 1978-06-02 | Capteur d'emission acoustique notamment pour guide d'ondes |
Publications (2)
Publication Number | Publication Date |
---|---|
FR2427754A1 true FR2427754A1 (fr) | 1979-12-28 |
FR2427754B1 FR2427754B1 (fr) | 1981-07-10 |
Family
ID=9209009
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
FR7816556A Granted FR2427754A1 (fr) | 1978-06-02 | 1978-06-02 | Capteur d'emission acoustique notamment pour guide d'ondes |
Country Status (1)
Country | Link |
---|---|
FR (1) | FR2427754A1 (fr) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2536622A1 (fr) * | 1982-11-19 | 1984-05-25 | Thomson Csf | Hydrophone de vitesse |
Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2406119A (en) * | 1942-03-11 | 1946-08-20 | Brush Dev Co | Microphone |
US3320580A (en) * | 1963-02-27 | 1967-05-16 | Alan O Sykes | Multipurpose piezoelectric transducer system |
FR2128798A1 (fr) * | 1971-03-11 | 1972-10-20 | Eastman Kodak Co |
-
1978
- 1978-06-02 FR FR7816556A patent/FR2427754A1/fr active Granted
Patent Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2406119A (en) * | 1942-03-11 | 1946-08-20 | Brush Dev Co | Microphone |
US3320580A (en) * | 1963-02-27 | 1967-05-16 | Alan O Sykes | Multipurpose piezoelectric transducer system |
FR2128798A1 (fr) * | 1971-03-11 | 1972-10-20 | Eastman Kodak Co |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2536622A1 (fr) * | 1982-11-19 | 1984-05-25 | Thomson Csf | Hydrophone de vitesse |
Also Published As
Publication number | Publication date |
---|---|
FR2427754B1 (fr) | 1981-07-10 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
CA2248610A1 (fr) | Methode et dispositif pour mesurer la charge d'espace dans des cables utilisant une methode electroacoustique a pulsion | |
GB1118644A (en) | Improvements in body electrode assemblies | |
EP0237616A3 (fr) | Assemblage d'un arrangement linéaire de transducteurs | |
EP0388099A3 (fr) | Surveillance d'une batterie | |
GB1489853A (en) | Electrical connector | |
DK436481A (da) | Kapselaggregat til en elektrettransducer | |
EP0108534A3 (fr) | Indicateur acoustique pour des puits | |
AU5615286A (en) | Vibration-sensitive transducer | |
FR2427754A1 (fr) | Capteur d'emission acoustique notamment pour guide d'ondes | |
ES437751A1 (es) | Dispositivo receptor de estructura continua para la prospec-cion sismica. | |
IE800113L (en) | Telephone summing circuit | |
ES445837A1 (es) | Un sistema indicador de humedad. | |
ES2002229A6 (es) | Metodo para determinar la carga de un filtro de carbon vegetal con gases y vapores | |
JPS5525284A (en) | Mfb speaker system | |
EP0277067A3 (fr) | Dispositif de compression de données et méthode pour enregistreur de données avec affichage d'enveloppe d'onde | |
ES471937A1 (es) | Perfeccionamientos en detectores de vibraciones de dos o maselementos sismicos | |
JPS576367A (en) | Method for detecting partial discharge of power cable | |
JPS51120779A (en) | Asoustic probe | |
FR2404850A1 (fr) | Appareil pour la detection du seuil de cavitation | |
SU1029306A1 (ru) | Устройство дл защиты человека от поражени электрическим током | |
SU591725A1 (ru) | Дифференциальный пьезоэлектрический преобразователь | |
JPS576368A (en) | Method for detecting partial discharge of power cable | |
FR2431178A1 (fr) | Contacteur electrique agissant par deformation elastique | |
SU1840475A1 (ru) | Гидроакустическая станция подводной лодки | |
Ivey | High-pressure piezoelectric ceramic hydrophone for infrasonic and audio frequencies USRD Type H48 |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
ST | Notification of lapse |