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GB1086640A - Damping backing for piezo-electric crystal or transducer - Google Patents

Damping backing for piezo-electric crystal or transducer

Info

Publication number
GB1086640A
GB1086640A GB4965863A GB4965863A GB1086640A GB 1086640 A GB1086640 A GB 1086640A GB 4965863 A GB4965863 A GB 4965863A GB 4965863 A GB4965863 A GB 4965863A GB 1086640 A GB1086640 A GB 1086640A
Authority
GB
United Kingdom
Prior art keywords
wires
crystal
bundle
backing
piezo
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.)
Expired
Application number
GB4965863A
Inventor
Geoffrey Bradfield
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.)
NAT RES DEV
National Research Development Corp UK
Original Assignee
NAT RES DEV
National Research Development Corp UK
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 NAT RES DEV, National Research Development Corp UK filed Critical NAT RES DEV
Priority to GB4965863A priority Critical patent/GB1086640A/en
Publication of GB1086640A publication Critical patent/GB1086640A/en
Expired 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

Landscapes

  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Acoustics & Sound (AREA)
  • Multimedia (AREA)
  • Mechanical Engineering (AREA)
  • Connections Effected By Soldering, Adhesion, Or Permanent Deformation (AREA)

Abstract

1,086,640. Piezoelectric crystal mountings. NATIONAL RESEARCH DEVELOPMENT CORPORATION. March 16, 1965 [Dec. 16, 1963], No. 49658/63. Heading H1E. Also in Division H4] A backing for a piezo-electric crystal comprises a bundle of parallel wires of e.g. copper or tungsten embedded in a thermosetting or thermoplastic material. The wires may extend normally to the crystal and may make contact with an electrode thereby providing an electrical connection. To prevent reflection of mechanical energy in the backing, the wires may be splayed out, tapered (e.g. by rolling) or cut to different lengths and arranged systematically or randomly. The wires may be coated with a high-strength plastic material and clamped together at the end adjacent the crystal. The other end of the bundle may then be splayed and filled with a material giving high attenuation e.g. plastic material filled with tungsten powder. The plastic coating on the wires may be tapered in thickness towards the end of the bundle.
GB4965863A 1963-12-16 1963-12-16 Damping backing for piezo-electric crystal or transducer Expired GB1086640A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB4965863A GB1086640A (en) 1963-12-16 1963-12-16 Damping backing for piezo-electric crystal or transducer

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB4965863A GB1086640A (en) 1963-12-16 1963-12-16 Damping backing for piezo-electric crystal or transducer

Publications (1)

Publication Number Publication Date
GB1086640A true GB1086640A (en) 1967-10-11

Family

ID=10453099

Family Applications (1)

Application Number Title Priority Date Filing Date
GB4965863A Expired GB1086640A (en) 1963-12-16 1963-12-16 Damping backing for piezo-electric crystal or transducer

Country Status (1)

Country Link
GB (1) GB1086640A (en)

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3935484A (en) * 1974-02-25 1976-01-27 Westinghouse Electric Corporation Replaceable acoustic transducer assembly
US3989965A (en) * 1973-07-27 1976-11-02 Westinghouse Electric Corporation Acoustic transducer with damping means
US3995179A (en) * 1974-12-30 1976-11-30 Texaco Inc. Damping structure for ultrasonic piezoelectric transducer
US4701658A (en) * 1985-03-11 1987-10-20 United Technologies Corporation Broadband acoustic point-contact transducer
US4751420A (en) * 1985-11-15 1988-06-14 Fraunhofer-Gesellschaft Zur Forderung Der Angewandten Forschung E.V. Ultrasonic test head
EP0559963A3 (en) * 1992-02-13 1994-01-26 Hewlett Packard Co
EP1515303A1 (en) * 2003-09-09 2005-03-16 SICK Engineering GmbH Ultrasound transducer assembly including a mass ring for the damping of interfering resonances

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3989965A (en) * 1973-07-27 1976-11-02 Westinghouse Electric Corporation Acoustic transducer with damping means
US3935484A (en) * 1974-02-25 1976-01-27 Westinghouse Electric Corporation Replaceable acoustic transducer assembly
US3995179A (en) * 1974-12-30 1976-11-30 Texaco Inc. Damping structure for ultrasonic piezoelectric transducer
US4701658A (en) * 1985-03-11 1987-10-20 United Technologies Corporation Broadband acoustic point-contact transducer
US4751420A (en) * 1985-11-15 1988-06-14 Fraunhofer-Gesellschaft Zur Forderung Der Angewandten Forschung E.V. Ultrasonic test head
EP0222276A3 (en) * 1985-11-15 1988-09-28 Fraunhofer-Gesellschaft Zur Förderung Der Angewandten Forschung E.V. Ultrasonic measuring head
EP0559963A3 (en) * 1992-02-13 1994-01-26 Hewlett Packard Co
EP1515303A1 (en) * 2003-09-09 2005-03-16 SICK Engineering GmbH Ultrasound transducer assembly including a mass ring for the damping of interfering resonances

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