EP0369127A3 - Compound ultrasonar sonar transducer - Google Patents

Compound ultrasonar sonar transducer Download PDF

Info

Publication number
EP0369127A3
EP0369127A3 EP19890116379 EP89116379A EP0369127A3 EP 0369127 A3 EP0369127 A3 EP 0369127A3 EP 19890116379 EP19890116379 EP 19890116379 EP 89116379 A EP89116379 A EP 89116379A EP 0369127 A3 EP0369127 A3 EP 0369127A3
Authority
EP
European Patent Office
Prior art keywords
thickness
mounting surface
ultrasonar
compound
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.)
Withdrawn
Application number
EP19890116379
Other languages
German (de)
French (fr)
Other versions
EP0369127A2 (en
Inventor
Dieter Dipl.-Phys. Stein
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.)
Siemens AG
Original Assignee
Siemens AG
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 Siemens AG filed Critical Siemens AG
Publication of EP0369127A2 publication Critical patent/EP0369127A2/en
Publication of EP0369127A3 publication Critical patent/EP0369127A3/en
Withdrawn legal-status Critical Current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
    • B06B1/0644—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
    • B06B1/067—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 which is used as, or combined with, an impedance matching layer

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Transducers For Ultrasonic Waves (AREA)
  • Measurement Of Velocity Or Position Using Acoustic Or Ultrasonic Waves (AREA)

Abstract

Ein Verbund-Ultraschall-Sonar, der als /2-Dickenschwinger ar­ beitet, mit einem piezoelektrischen Schwingerkörper, bei dem vorgesehen ist, daß auf die einer Montagefläche zugewandte Oberfläche des Schwingerkörpers (K) der Dicke DK eine An­ passungsschicht (A) der Dicke DA aus einem Material aufgebracht ist, das im Verhältnis zu dem piezokeramischen Material des Schwingkörpers (K) ein niedriges Produkt von Dichte und Elastizität-Modul E hat, und daß die Dicke DA der Anpassungs­ schicht (A) derart an die Dicke DK des Schwingkörpers (K) an­ gepaßt ist, daß eine nahezu vollständige Reflexion des Ultra­ schall-Anteils, der in Richtung der Montageoberfläche ausge­ sendet wird, an der Montageoberfläche erfolgt. A composite ultrasound sonar, which works as a / 2-thickness transducer ar, with a piezoelectric transducer body, in which it is provided that on the mounting surface facing the transducer body (K) of the thickness D K a matching layer (A) of the thickness D A is applied from a material that has a low product of density and elasticity module E in relation to the piezoceramic material of the vibrating body (K), and that the thickness D A of the adaptation layer (A) is such that the thickness D K of the vibrating body (K) is fitted to the fact that an almost complete reflection of the ultrasound portion that is sent out in the direction of the mounting surface takes place on the mounting surface.

EP19890116379 1988-09-29 1989-09-05 Compound ultrasonar sonar transducer Withdrawn EP0369127A3 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3833144 1988-09-29
DE3833144 1988-09-29

Publications (2)

Publication Number Publication Date
EP0369127A2 EP0369127A2 (en) 1990-05-23
EP0369127A3 true EP0369127A3 (en) 1991-11-06

Family

ID=6364019

Family Applications (1)

Application Number Title Priority Date Filing Date
EP19890116379 Withdrawn EP0369127A3 (en) 1988-09-29 1989-09-05 Compound ultrasonar sonar transducer

Country Status (2)

Country Link
EP (1) EP0369127A3 (en)
JP (1) JPH02122290A (en)

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2052917A (en) * 1979-06-28 1981-01-28 Hewlett Packard Co Acoustic imaging transducers
FR2503517A1 (en) * 1981-04-06 1982-10-08 Thomson Csf Piezoelectric transducer for ultrasonic waves - has transducer with polymeric piezoelectric element of higher acoustic impedance than reflector and half wavelength thickness
EP0142178A1 (en) * 1983-08-31 1985-05-22 Laboratoires D'electronique Philips Ultrasonic transducer

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2052917A (en) * 1979-06-28 1981-01-28 Hewlett Packard Co Acoustic imaging transducers
FR2503517A1 (en) * 1981-04-06 1982-10-08 Thomson Csf Piezoelectric transducer for ultrasonic waves - has transducer with polymeric piezoelectric element of higher acoustic impedance than reflector and half wavelength thickness
EP0142178A1 (en) * 1983-08-31 1985-05-22 Laboratoires D'electronique Philips Ultrasonic transducer

Also Published As

Publication number Publication date
EP0369127A2 (en) 1990-05-23
JPH02122290A (en) 1990-05-09

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