FR2251149A1 - Piezoelectric transducer damping device - has shaped piece of high energy dissipating rate material to attenuate pulses - Google Patents
Piezoelectric transducer damping device - has shaped piece of high energy dissipating rate material to attenuate pulsesInfo
- Publication number
- FR2251149A1 FR2251149A1 FR7340472A FR7340472A FR2251149A1 FR 2251149 A1 FR2251149 A1 FR 2251149A1 FR 7340472 A FR7340472 A FR 7340472A FR 7340472 A FR7340472 A FR 7340472A FR 2251149 A1 FR2251149 A1 FR 2251149A1
- Authority
- FR
- France
- Prior art keywords
- high energy
- shaped piece
- damping device
- piezoelectric transducer
- energy dissipating
- 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
- 239000000463 material Substances 0.000 title abstract 3
- 238000013016 damping Methods 0.000 title abstract 2
- 229910000851 Alloy steel Inorganic materials 0.000 abstract 1
- 230000021715 photosynthesis, light harvesting Effects 0.000 abstract 1
- 229910001220 stainless steel Inorganic materials 0.000 abstract 1
- 238000004154 testing of material Methods 0.000 abstract 1
Classifications
-
- G—PHYSICS
- G10—MUSICAL INSTRUMENTS; ACOUSTICS
- G10K—SOUND-PRODUCING DEVICES; METHODS OR DEVICES FOR PROTECTING AGAINST, OR FOR DAMPING, NOISE OR OTHER ACOUSTIC WAVES IN GENERAL; ACOUSTICS NOT OTHERWISE PROVIDED FOR
- G10K11/00—Methods or devices for transmitting, conducting or directing sound in general; Methods or devices for protecting against, or for damping, noise or other acoustic waves in general
- G10K11/002—Devices for damping, suppressing, obstructing or conducting sound in acoustic devices
-
- 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
- B06B1/0681—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 and a damping structure
- B06B1/0685—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 and a damping structure on the back only of piezoelectric elements
-
- 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
Abstract
The piezoelectric transducer has a damping device (5) made up of a shaped piece with a truncated part (18) and a hollow part (21). The large base (19) of the truncated part of the device is in contact with a piezoelectric disc (2); the small base (20) is common with the hollow part (21). The hollow part (21) is made up of a concave external surface (28) and a cylindrical internal surface (23). The shape of the various surfaces of the device (5) are such as to provide reflexion of any ultrasonic wave. The material of the device (5) is chosen so as to limit thermal expansion, to make good mechanical contact with the piezoelectric disc and to provide high energy dissipation of any ultrasonic wave. The material is typically stainless or alloy steel. The transducer is used for ultrasonic testing of materials and parts.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR7340472A FR2251149A1 (en) | 1973-11-14 | 1973-11-14 | Piezoelectric transducer damping device - has shaped piece of high energy dissipating rate material to attenuate pulses |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR7340472A FR2251149A1 (en) | 1973-11-14 | 1973-11-14 | Piezoelectric transducer damping device - has shaped piece of high energy dissipating rate material to attenuate pulses |
Publications (2)
Publication Number | Publication Date |
---|---|
FR2251149A1 true FR2251149A1 (en) | 1975-06-06 |
FR2251149B1 FR2251149B1 (en) | 1978-12-01 |
Family
ID=9127720
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
FR7340472A Granted FR2251149A1 (en) | 1973-11-14 | 1973-11-14 | Piezoelectric transducer damping device - has shaped piece of high energy dissipating rate material to attenuate pulses |
Country Status (1)
Country | Link |
---|---|
FR (1) | FR2251149A1 (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0307799A2 (en) * | 1987-09-14 | 1989-03-22 | Vyskumny Ustav Mechanizacie A Automatizacie, Odborova Vyskumnovyrobna Jednotka | Damping body for ultrasonic pulse transducers |
EP0425697A1 (en) * | 1989-05-15 | 1991-05-08 | Hitachi Construction Machinery Co., Ltd. | Ultrasonic probe and method of producing the same |
-
1973
- 1973-11-14 FR FR7340472A patent/FR2251149A1/en active Granted
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0307799A2 (en) * | 1987-09-14 | 1989-03-22 | Vyskumny Ustav Mechanizacie A Automatizacie, Odborova Vyskumnovyrobna Jednotka | Damping body for ultrasonic pulse transducers |
EP0307799A3 (en) * | 1987-09-14 | 1990-07-11 | Vyskumny Ustav Mechanizacie A Automatizacie, Odborova Vyskumnovyrobna Jednotka | Damping body for ultrasonic pulse transducers |
EP0425697A1 (en) * | 1989-05-15 | 1991-05-08 | Hitachi Construction Machinery Co., Ltd. | Ultrasonic probe and method of producing the same |
EP0425697A4 (en) * | 1989-05-15 | 1992-12-02 | Hitachi Construction Machinery Co., Ltd. | Ultrasonic probe and method of producing the same |
Also Published As
Publication number | Publication date |
---|---|
FR2251149B1 (en) | 1978-12-01 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
ST | Notification of lapse |