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 pulses

Info

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
Application number
FR7340472A
Other languages
French (fr)
Other versions
FR2251149B1 (en
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Commissariat a lEnergie Atomique et aux Energies Alternatives CEA
Original Assignee
Commissariat a lEnergie Atomique CEA
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Commissariat a lEnergie Atomique CEA filed Critical Commissariat a lEnergie Atomique CEA
Priority to FR7340472A priority Critical patent/FR2251149A1/en
Publication of FR2251149A1 publication Critical patent/FR2251149A1/en
Application granted granted Critical
Publication of FR2251149B1 publication Critical patent/FR2251149B1/fr
Granted legal-status Critical Current

Links

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.
FR7340472A 1973-11-14 1973-11-14 Piezoelectric transducer damping device - has shaped piece of high energy dissipating rate material to attenuate pulses Granted FR2251149A1 (en)

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)

* Cited by examiner, † Cited by third party
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

Cited By (4)

* Cited by examiner, † Cited by third party
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