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AU2781689A - An acoustic emission transducer and an electrical oscillator - Google Patents

An acoustic emission transducer and an electrical oscillator

Info

Publication number
AU2781689A
AU2781689A AU27816/89A AU2781689A AU2781689A AU 2781689 A AU2781689 A AU 2781689A AU 27816/89 A AU27816/89 A AU 27816/89A AU 2781689 A AU2781689 A AU 2781689A AU 2781689 A AU2781689 A AU 2781689A
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
AU27816/89A
Other languages
English (en)
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 AU2781689A publication Critical patent/AU2781689A/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 elements; 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 elements; 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 elements; 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)
AU27816/89A 1987-12-05 1988-11-17 An acoustic emission transducer and an electrical oscillator Abandoned AU2781689A (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
AU2781689A true AU2781689A (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 After (1)

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

Country Status (5)

Country Link
CN (2) CN1033503A (fr)
AU (2) AU2781689A (fr)
ES (2) ES2010039A6 (fr)
GB (1) GB8728509D0 (fr)
WO (2) WO1989005445A1 (fr)

Families Citing this family (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE68905913T2 (de) * 1988-12-23 1993-09-30 Mitsubishi Electric Corp Beschleunigungsmessaufnehmer.
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
DE69507770T2 (de) * 1994-11-04 1999-09-02 Sagem S.A. Piezoelektrischer Schwingungssensor
JPH10294995A (ja) * 1997-04-21 1998-11-04 Matsushita Electric Ind Co Ltd 防滴型超音波送信器
JP4810661B2 (ja) * 2006-04-27 2011-11-09 国立大学法人埼玉大学 機械電気変換素子及びその製造方法
KR20090117402A (ko) 2008-05-09 2009-11-12 한국지질자원연구원 미소파괴음 센서 구비 파괴 예측용 계측장치, 미소파괴음센서 구비 파괴 예측용 계측장치 설치 방법 및 미소파괴음센서 구비 파괴 예측용 계측장치 세트
JP5269128B2 (ja) 2010-03-12 2013-08-21 エーエスエムエル ネザーランズ ビー．ブイ． リソグラフィ装置および方法
CN105705255B (zh) * 2013-11-04 2019-02-15 皇家飞利浦有限公司 单元件超声波换能器的大批量制造
DE102015216163A1 (de) * 2015-08-25 2017-03-02 Robert Bosch Gmbh Akustischer Sensor zum Aussenden und/oder Empfangen akustischer Signale
CN108981896A (zh) * 2018-07-12 2018-12-11 清诚声发射研究（广州）有限公司 一种声发射传感器
CN112153543B (zh) * 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) 半空间辐射高频宽带换能器
WO2022193005A1 (fr) * 2021-03-15 2022-09-22 Resonant Acoustics International Inc. Structures de support d'apodisation pour des transducteurs à ultrasons et procédés associés

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 (fr) * 1981-01-16 1982-07-23 Thomson Csf Hydrophone a lame piezoelectrique mince
JPS59158611A (ja) * 1983-03-01 1984-09-08 Matsushita Electric Ind Co Ltd 水晶発振ユニツト
GB2174537A (en) * 1985-04-30 1986-11-05 Stc Plc Crystal oscillator

Also Published As

Publication number Publication date
CN1033503A (zh) 1989-06-21
AU2726288A (en) 1989-07-05
WO1989005445A1 (fr) 1989-06-15
ES2010039A6 (es) 1989-10-16
WO1989005199A1 (fr) 1989-06-15
CN1033729A (zh) 1989-07-05
ES2010038A6 (es) 1989-10-16
GB8728509D0 (en) 1988-01-13

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