GB2301479A - Hydrophone bender crystal assembly - Google Patents

Hydrophone bender crystal assembly

Info

Publication number
GB2301479A
GB2301479A GB9618000A GB9618000A GB2301479A GB 2301479 A GB2301479 A GB 2301479A GB 9618000 A GB9618000 A GB 9618000A GB 9618000 A GB9618000 A GB 9618000A GB 2301479 A GB2301479 A GB 2301479A
Authority
GB
United Kingdom
Prior art keywords
mounting plate
hydrophone
crystal
mounting
plate
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
GB9618000A
Other versions
GB9618000D0 (en
GB2301479B (en
Inventor
Daniel Ming-Kwong Woo
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.)
Shawcor Ltd
Original Assignee
Shawcor Ltd
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 Shawcor Ltd filed Critical Shawcor Ltd
Publication of GB9618000D0 publication Critical patent/GB9618000D0/en
Publication of GB2301479A publication Critical patent/GB2301479A/en
Application granted granted Critical
Publication of GB2301479B publication Critical patent/GB2301479B/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

Links

Classifications

    • 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

Abstract

A bender crystal assembly (30) is disclosed for mounting in a hydrophone housing to produce electrical signals in response to acoustic pressure changes in a body of water. The assembly comprises a disc-shaped mounting plate (12a) for mounting in the hydrophone housing to be bent by differential water pressure across the plate. A thin disc (14a) of piezoelectric crystal is bonded to the mounting plate by a layer (16a) of conductive adhesive to bend with the mounting plate. A reinforcing plate (32) is bonded to the side of the crystal opposite from the mounting plate by a layer (34) of conductive adhesive to increase the section moment of inertia and the depth of water in which the crystal assembly can operate.
GB9618000A 1994-03-15 1995-03-14 Hydrophone bender crystal assembly Expired - Fee Related GB2301479B (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US21362494A 1994-03-15 1994-03-15
PCT/US1995/003144 WO1995024977A2 (en) 1994-03-15 1995-03-14 Hydrophone bender crystal assembly

Publications (3)

Publication Number Publication Date
GB9618000D0 GB9618000D0 (en) 1996-10-09
GB2301479A true GB2301479A (en) 1996-12-04
GB2301479B GB2301479B (en) 1998-02-25

Family

ID=22795829

Family Applications (1)

Application Number Title Priority Date Filing Date
GB9618000A Expired - Fee Related GB2301479B (en) 1994-03-15 1995-03-14 Hydrophone bender crystal assembly

Country Status (4)

Country Link
CN (1) CN1143918A (en)
AU (1) AU2459795A (en)
GB (1) GB2301479B (en)
WO (1) WO1995024977A2 (en)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN100387363C (en) * 2004-08-31 2008-05-14 中国科学院声学研究所 Music vibration transmission piezoelectric transducer in water
CN100569315C (en) * 2004-11-12 2009-12-16 中国科学院声学研究所 The water music body-sensing vibrator
EP2609637A4 (en) * 2010-09-10 2014-09-03 Halliburton Energy Serv Inc Method of controlled pulse driving of a stacked pzt bender bar for dipole acoustic radiation
CN102169685A (en) * 2011-03-29 2011-08-31 哈尔滨工程大学 Small sized deepwater underwater sound energy transducer with low frequency and broad band

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3832762A (en) * 1972-05-22 1974-09-03 Texas Instruments Inc Method of producing a matched parameter acceleration cancelling hydrophone
US4833659A (en) * 1984-12-27 1989-05-23 Westinghouse Electric Corp. Sonar apparatus
US5218576A (en) * 1992-05-22 1993-06-08 The United States Of America As Represented By The Secretary Of The Navy Underwater transducer

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0715485B2 (en) * 1987-05-21 1995-02-22 日産自動車株式会社 Piezoelectric mechanical sensor

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3832762A (en) * 1972-05-22 1974-09-03 Texas Instruments Inc Method of producing a matched parameter acceleration cancelling hydrophone
US4833659A (en) * 1984-12-27 1989-05-23 Westinghouse Electric Corp. Sonar apparatus
US5218576A (en) * 1992-05-22 1993-06-08 The United States Of America As Represented By The Secretary Of The Navy Underwater transducer

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
DE3817354 A *

Also Published As

Publication number Publication date
AU2459795A (en) 1995-10-03
GB9618000D0 (en) 1996-10-09
GB2301479B (en) 1998-02-25
CN1143918A (en) 1997-02-26
WO1995024977A2 (en) 1995-09-21
WO1995024977A3 (en) 1995-11-02

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Legal Events

Date Code Title Description
PCNP Patent ceased through non-payment of renewal fee

Effective date: 20070314