EP0222276A3 - Ultraschallprüfkopf - Google Patents

Ultraschallprüfkopf

Info

Publication number
EP0222276A3
EP0222276A3 EP86115116A EP86115116A EP0222276A3 EP 0222276 A3 EP0222276 A3 EP 0222276A3 EP 86115116 A EP86115116 A EP 86115116A EP 86115116 A EP86115116 A EP 86115116A EP 0222276 A3 EP0222276 A3 EP 0222276A3
Authority
EP
European Patent Office
Prior art keywords
sound
measuring head
ultrasonic measuring
high acoustic
order
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Withdrawn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
EP86115116A
Other languages
English (en)
French (fr)
Other versions
EP0222276A2 (de
Inventor
Wolfgang Dr. Gebhardt
Helmut Woll
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.)
Fraunhofer Gesellschaft zur Forderung der Angewandten Forschung eV
Original Assignee
Fraunhofer Gesellschaft zur Forderung der Angewandten Forschung eV
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 Fraunhofer Gesellschaft zur Forderung der Angewandten Forschung eV filed Critical Fraunhofer Gesellschaft zur Forderung der Angewandten Forschung eV
Publication of EP0222276A2 publication Critical patent/EP0222276A2/de
Publication of EP0222276A3 publication Critical patent/EP0222276A3/de
Withdrawn legal-status Critical Current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
    • B06B1/0685—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 on the back only of piezoelectric elements

Abstract

Ein Ultraschallprüfkopf mit einer Schwingkristallan­ ordnung (1) verfügt auf der von der Schallabstrahlrich­ tung wegweisenden Rückseite über einen Dämpfungskörper (2) mit einer Vielzahl von abwechselnd aufeinanderge­ packten schalleitenden und schallabsorbierenden Lamel­ len (3, 5), die auf einer Seite der Lamellenberandungen mit der Schwingkristallanordnung (1) gekoppelt sind, um auf diese Weise eine hohe akustische Impedanz sowie eine hohe akustische Absorption zu gewährleisten.
EP86115116A 1985-11-15 1986-10-31 Ultraschallprüfkopf Withdrawn EP0222276A3 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3540610 1985-11-15
DE19853540610 DE3540610A1 (de) 1985-11-15 1985-11-15 Ultraschallpruefkopf

Publications (2)

Publication Number Publication Date
EP0222276A2 EP0222276A2 (de) 1987-05-20
EP0222276A3 true EP0222276A3 (de) 1988-09-28

Family

ID=6286117

Family Applications (1)

Application Number Title Priority Date Filing Date
EP86115116A Withdrawn EP0222276A3 (de) 1985-11-15 1986-10-31 Ultraschallprüfkopf

Country Status (4)

Country Link
US (1) US4751420A (de)
EP (1) EP0222276A3 (de)
JP (1) JPS62125798A (de)
DE (1) DE3540610A1 (de)

Families Citing this family (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4007631A1 (de) * 1989-03-16 1990-09-20 Fraunhofer Ges Forschung Ultraschallpruefkopf
JPH0538563U (ja) * 1991-10-25 1993-05-25 株式会社トキメツク 二振動子探触子
GB9126082D0 (en) * 1991-12-06 1992-02-05 Nat Res Dev Acoustic non-destructive testing
IL105085A0 (en) * 1993-03-17 1993-08-18 S T M System Testing Materials Method and device for revealing defects in materials and their connections
US5433102A (en) * 1993-03-23 1995-07-18 Pedziwiatr; Edward A. Ultrasonic wave energy detection and identification
US5486734A (en) 1994-02-18 1996-01-23 Seyed-Bolorforosh; Mir S. Acoustic transducer using phase shift interference
US5648942A (en) * 1995-10-13 1997-07-15 Advanced Technology Laboratories, Inc. Acoustic backing with integral conductors for an ultrasonic transducer
US5855049A (en) * 1996-10-28 1999-01-05 Microsound Systems, Inc. Method of producing an ultrasound transducer
US6043590A (en) * 1997-04-18 2000-03-28 Atl Ultrasound Composite transducer with connective backing block
US6266857B1 (en) 1998-02-17 2001-07-31 Microsound Systems, Inc. Method of producing a backing structure for an ultrasound transceiver
US6467138B1 (en) 2000-05-24 2002-10-22 Vermon Integrated connector backings for matrix array transducers, matrix array transducers employing such backings and methods of making the same
US7105986B2 (en) * 2004-08-27 2006-09-12 General Electric Company Ultrasound transducer with enhanced thermal conductivity
US8127612B2 (en) * 2008-08-25 2012-03-06 Praxair Technology, Inc. System and method for ultrasonic examination of threaded surfaces
JP2010144868A (ja) * 2008-12-19 2010-07-01 Ihi Corp 弾性くさびダンパ
TW201623004A (zh) * 2014-12-26 2016-07-01 財團法人紡織產業綜合研究所 可撓性吸音複合膜

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB869582A (en) * 1957-08-19 1961-05-31 Chirana Praha Mechanical damping member for an electroacoustic transducer
GB1086640A (en) * 1963-12-16 1967-10-11 Nat Res Dev Damping backing for piezo-electric crystal or transducer
US3995179A (en) * 1974-12-30 1976-11-30 Texaco Inc. Damping structure for ultrasonic piezoelectric transducer
DE2217472B2 (de) * 1972-04-12 1979-06-13 Krautkraemer, Gmbh, 5000 Koeln Verfahren zur Herstellung von Dämpfungskörpern für Ultraschall-Prüfköpfe
DE2926182A1 (de) * 1979-06-28 1981-01-22 Siemens Ag Ultraschallwandleranordnung
EP0128049A2 (de) * 1983-06-07 1984-12-12 Matsushita Electric Industrial Co., Ltd. Ultraschallsende mit einem absorbierenden Träger

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3794866A (en) * 1972-11-09 1974-02-26 Automation Ind Inc Ultrasonic search unit construction
US4507582A (en) * 1982-09-29 1985-03-26 New York Institute Of Technology Matching region for damped piezoelectric ultrasonic apparatus
JPS61105200A (ja) * 1985-10-16 1986-05-23 Hitachi Ltd 超音波探触子

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB869582A (en) * 1957-08-19 1961-05-31 Chirana Praha Mechanical damping member for an electroacoustic transducer
GB1086640A (en) * 1963-12-16 1967-10-11 Nat Res Dev Damping backing for piezo-electric crystal or transducer
DE2217472B2 (de) * 1972-04-12 1979-06-13 Krautkraemer, Gmbh, 5000 Koeln Verfahren zur Herstellung von Dämpfungskörpern für Ultraschall-Prüfköpfe
US3995179A (en) * 1974-12-30 1976-11-30 Texaco Inc. Damping structure for ultrasonic piezoelectric transducer
DE2926182A1 (de) * 1979-06-28 1981-01-22 Siemens Ag Ultraschallwandleranordnung
EP0128049A2 (de) * 1983-06-07 1984-12-12 Matsushita Electric Industrial Co., Ltd. Ultraschallsende mit einem absorbierenden Träger

Non-Patent Citations (2)

* Cited by examiner, † Cited by third party
Title
IEEE TRANSACTIONS ON SONICS AND ULTRASONICS, Band SU-26, Nr. 2, März 1979, Seiten 140-142; R.G. SWARTZ et al.: "An improved wedge-type backing for piezoelectric transducers" *
PATENT ABSTRACTS OF JAPAN, Band 10, Nr. 285 (E-441)[2341], 27. September 1986; & JP-A-61 105 200 (HITACHI LTD.) 23.05.1986 *

Also Published As

Publication number Publication date
DE3540610C2 (de) 1987-10-01
EP0222276A2 (de) 1987-05-20
JPS62125798A (ja) 1987-06-08
US4751420A (en) 1988-06-14
DE3540610A1 (de) 1987-05-21

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Inventor name: GEBHARDT, WOLFGANG, DR.

Inventor name: WOLL, HELMUT