AU2726288A - An acoustic emission transducer and an electrical oscillator - Google Patents

An acoustic emission transducer and an electrical oscillator

Info

Publication number
AU2726288A
AU2726288A AU27262/88A AU2726288A AU2726288A AU 2726288 A AU2726288 A AU 2726288A AU 27262/88 A AU27262/88 A AU 27262/88A AU 2726288 A AU2726288 A AU 2726288A AU 2726288 A AU2726288 A AU 2726288A
Authority
AU
Australia
Prior art keywords
acoustic emission
emission transducer
electrical oscillator
oscillator
transducer
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.)
Abandoned
Application number
AU27262/88A
Inventor
Trevor John Holroyd
Michael Sadler
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.)
Rolls Royce PLC
Original Assignee
Rolls Royce PLC
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 Rolls Royce PLC filed Critical Rolls Royce PLC
Publication of AU2726288A publication Critical patent/AU2726288A/en
Abandoned legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03H—IMPEDANCE NETWORKS, e.g. RESONANT CIRCUITS; RESONATORS
    • H03H9/00—Networks comprising electromechanical or electro-acoustic devices; Electromechanical resonators
    • H03H9/15—Constructional features of resonators consisting of piezoelectric or electrostrictive material
    • H03H9/17—Constructional features of resonators consisting of piezoelectric or electrostrictive material having a single resonator
    • H03H9/176—Constructional features of resonators consisting of piezoelectric or electrostrictive material having a single resonator consisting of ceramic material
    • 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
    • B06B1/0603—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 piezoelectric bender, e.g. bimorph
    • 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
    • B06B1/0651—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 of circular shape
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01H—MEASUREMENT OF MECHANICAL VIBRATIONS OR ULTRASONIC, SONIC OR INFRASONIC WAVES
    • G01H11/00—Measuring mechanical vibrations or ultrasonic, sonic or infrasonic waves by detecting changes in electric or magnetic properties
    • G01H11/06—Measuring mechanical vibrations or ultrasonic, sonic or infrasonic waves by detecting changes in electric or magnetic properties by electric means
    • G01H11/08—Measuring mechanical vibrations or ultrasonic, sonic or infrasonic waves by detecting changes in electric or magnetic properties by electric means using piezoelectric devices
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03H—IMPEDANCE NETWORKS, e.g. RESONANT CIRCUITS; RESONATORS
    • H03H9/00—Networks comprising electromechanical or electro-acoustic devices; Electromechanical resonators
    • H03H9/15—Constructional features of resonators consisting of piezoelectric or electrostrictive material
    • H03H9/17—Constructional features of resonators consisting of piezoelectric or electrostrictive material having a single resonator
    • H03H9/171—Constructional features of resonators consisting of piezoelectric or electrostrictive material having a single resonator implemented with thin-film techniques, i.e. of the film bulk acoustic resonator [FBAR] type
    • H03H9/172—Means for mounting on a substrate, i.e. means constituting the material interface confining the waves to a volume
    • H03H9/173—Air-gaps
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03H—IMPEDANCE NETWORKS, e.g. RESONANT CIRCUITS; RESONATORS
    • H03H9/00—Networks comprising electromechanical or electro-acoustic devices; Electromechanical resonators
    • H03H9/15—Constructional features of resonators consisting of piezoelectric or electrostrictive material
    • H03H9/17—Constructional features of resonators consisting of piezoelectric or electrostrictive material having a single resonator
    • H03H9/171—Constructional features of resonators consisting of piezoelectric or electrostrictive material having a single resonator implemented with thin-film techniques, i.e. of the film bulk acoustic resonator [FBAR] type
    • H03H9/172—Means for mounting on a substrate, i.e. means constituting the material interface confining the waves to a volume
    • H03H9/174—Membranes
    • 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
    • H04R17/04—Gramophone pick-ups using a stylus; Recorders using a stylus
    • H04R17/08—Gramophone pick-ups using a stylus; Recorders using a stylus signals being recorded or played back by vibration of a stylus in two orthogonal directions simultaneously

Landscapes

  • Physics & Mathematics (AREA)
  • Acoustics & Sound (AREA)
  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Physics & Mathematics (AREA)
  • Chemical & Material Sciences (AREA)
  • Ceramic Engineering (AREA)
  • Piezo-Electric Transducers For Audible Bands (AREA)
  • Transducers For Ultrasonic Waves (AREA)
AU27262/88A 1987-12-05 1988-11-17 An acoustic emission transducer and an electrical oscillator Abandoned AU2726288A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
GB8728509 1987-12-05
GB878728509A GB8728509D0 (en) 1987-12-05 1987-12-05 Acoustic emission transducer

Publications (1)

Publication Number Publication Date
AU2726288A true AU2726288A (en) 1989-07-05

Family

ID=10628074

Family Applications (2)

Application Number Title Priority Date Filing Date
AU27816/89A Abandoned AU2781689A (en) 1987-12-05 1988-11-17 An acoustic emission transducer and an electrical oscillator
AU27262/88A Abandoned AU2726288A (en) 1987-12-05 1988-11-17 An acoustic emission transducer and an electrical oscillator

Family Applications Before (1)

Application Number Title Priority Date Filing Date
AU27816/89A Abandoned AU2781689A (en) 1987-12-05 1988-11-17 An acoustic emission transducer and an electrical oscillator

Country Status (5)

Country Link
CN (2) CN1033503A (en)
AU (2) AU2781689A (en)
ES (2) ES2010039A6 (en)
GB (1) GB8728509D0 (en)
WO (2) WO1989005199A1 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AU599540B1 (en) * 1988-12-23 1990-07-19 Mitsubishi Denki Kabushiki Kaisha Acceleration sensor

Families Citing this family (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5849694A (en) * 1990-07-16 1998-12-15 Synenki; Richard M. Stable and bioactive modified porcine somatotropin and pharmaceutical compositions thereof
GB2282297B (en) * 1993-09-23 1998-03-11 Holroyd Instr Ltd Improved resonant acoustic emission transducer
EP0710822B1 (en) * 1994-11-04 1999-02-10 Sagem Sa Piezoelectric vibration sensor
JPH10294995A (en) * 1997-04-21 1998-11-04 Matsushita Electric Ind Co Ltd Dripproof ultrasonic wave transmitter
JP4810661B2 (en) * 2006-04-27 2011-11-09 国立大学法人埼玉大学 Electromechanical transducer and method for manufacturing the same
KR20090117402A (en) * 2008-05-09 2009-11-12 한국지질자원연구원 Measuring apparatus with ae sensor for predicting failure, method for installing the same and measuring apparatus set with ae sensor for predicting failure
EP2365390A3 (en) 2010-03-12 2017-10-04 ASML Netherlands B.V. Lithographic apparatus and method
JP6542769B2 (en) * 2013-11-04 2019-07-10 コーニンクレッカ フィリップス エヌ ヴェＫｏｎｉｎｋｌｉｊｋｅ Ｐｈｉｌｉｐｓ Ｎ．Ｖ． Mass production of single element ultrasonic transducers
DE102015216163A1 (en) * 2015-08-25 2017-03-02 Robert Bosch Gmbh Acoustic sensor for emitting and / or receiving acoustic signals
CN108981896A (en) * 2018-07-12 2018-12-11 清诚声发射研究（广州）有限公司 A kind of acoustic emission sensor
CN112153543B (en) * 2020-09-07 2022-03-18 上海船舶电子设备研究所(中国船舶重工集团公司第七二六研究所) Half-space radiation high-frequency broadband transducer
EP4308310A1 (en) * 2021-03-15 2024-01-24 Resonant Acoustics International Inc. Apodizing backing structures for ultrasonic transducers and related methods

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS55110924A (en) * 1979-02-20 1980-08-27 Murata Mfg Co Ltd Integrated construction type vibration detecter
JPS5667731A (en) * 1979-11-06 1981-06-08 Nissan Motor Co Ltd Knocking sensor
FR2498405A1 (en) * 1981-01-16 1982-07-23 Thomson Csf Dynamic pressure sensor, esp. hydrophone - using thin layer of piezoelectric zinc oxide on semiconductor substrate
JPS59158611A (en) * 1983-03-01 1984-09-08 Matsushita Electric Ind Co Ltd Crystal oscillating unit
GB2174537A (en) * 1985-04-30 1986-11-05 Stc Plc Crystal oscillator

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AU599540B1 (en) * 1988-12-23 1990-07-19 Mitsubishi Denki Kabushiki Kaisha Acceleration sensor

Also Published As

Publication number Publication date
CN1033503A (en) 1989-06-21
GB8728509D0 (en) 1988-01-13
AU2781689A (en) 1989-07-05
ES2010039A6 (en) 1989-10-16
WO1989005199A1 (en) 1989-06-15
CN1033729A (en) 1989-07-05
WO1989005445A1 (en) 1989-06-15
ES2010038A6 (en) 1989-10-16

Similar Documents

Publication Publication Date Title
GB2232321B (en) An electro-acoustic transducer
GB2220819B (en) Electroacoustic transducer
EP0560415A3 (en) Electro-acoustic transducer
AU1788588A (en) Flextensional transducer
AU589883B2 (en) Multiparameter generator for ultrasonic transducers
GB2210232B (en) Frequency-selective acoustical electrical transducer
GB2219712B (en) Piezoelectric speaker
AU7163987A (en) Flextensional transducers
AU3763489A (en) An emission electrode
AU2781689A (en) An acoustic emission transducer and an electrical oscillator
GB9009975D0 (en) Sound generating transducer
GB8912782D0 (en) An acoustic transducer
GB8823245D0 (en) Flextensional transducer
AU3756989A (en) Electrodynamic transducer structure
GB8726489D0 (en) Electro-acoustic transducers
GB8922891D0 (en) Electromagnetic acoustic transducers
GB2180429B (en) An electroacoustic transducer arrangement
GB2224761B (en) An acoustic screen
AU4623689A (en) Amplified transducer
AU2928889A (en) Ultrasonic transducer
AU7395387A (en) Acoustic transducer
AU2549888A (en) Electro-acoustic transducer
AU5366986A (en) Low frequency audio transducer
GB2175527B (en) Acoustic transducer manufacture
AU588989B2 (en) An improved transducer