DE2621684C3 - Elektrodynamischer Schallwandler - Google Patents

Elektrodynamischer Schallwandler

Info

Publication number
DE2621684C3
DE2621684C3 DE2621684A DE2621684A DE2621684C3 DE 2621684 C3 DE2621684 C3 DE 2621684C3 DE 2621684 A DE2621684 A DE 2621684A DE 2621684 A DE2621684 A DE 2621684A DE 2621684 C3 DE2621684 C3 DE 2621684C3
Authority
DE
Germany
Prior art keywords
magnetic core
workpiece
magnet
magnetic
sound 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.)
Expired
Application number
DE2621684A
Other languages
German (de)
English (en)
Other versions
DE2621684B2 (de
DE2621684A1 (de
Inventor
Wolfgang Dipl.-Phys. Dr. Boettcher
Hermann-Josef Prof. Dr. Rer.Nat. Kopineck
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.)
Kopineck Hermann-Josef Prof Drrernat 4600 D
Original Assignee
Hoesch Werke 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 Hoesch Werke AG filed Critical Hoesch Werke AG
Priority to DE2621684A priority Critical patent/DE2621684C3/de
Priority to AT0180177A priority patent/AT379689B/de
Priority to IT49036/77A priority patent/IT1086574B/it
Priority to NLAANVRAGE7704458,A priority patent/NL173608C/xx
Priority to GB17652/77A priority patent/GB1549902A/en
Priority to FR7714723A priority patent/FR2350890A1/fr
Priority to LU77330A priority patent/LU77330A1/xx
Priority to BE177550A priority patent/BE854605A/xx
Priority to US05/796,883 priority patent/US4138896A/en
Publication of DE2621684A1 publication Critical patent/DE2621684A1/de
Publication of DE2621684B2 publication Critical patent/DE2621684B2/de
Application granted granted Critical
Publication of DE2621684C3 publication Critical patent/DE2621684C3/de
Expired 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
    • B06B1/04—Methods or apparatus for generating mechanical vibrations of infrasonic, sonic, or ultrasonic frequency making use of electrical energy operating with electromagnetism
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N29/00—Investigating or analysing materials by the use of ultrasonic, sonic or infrasonic waves; Visualisation of the interior of objects by transmitting ultrasonic or sonic waves through the object
    • G01N29/22—Details, e.g. general constructional or apparatus details
    • G01N29/24—Probes
    • G01N29/2412—Probes using the magnetostrictive properties of the material to be examined, e.g. electromagnetic acoustic transducers [EMAT]
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
    • H04R9/00—Transducers of moving-coil, moving-strip, or moving-wire type
    • H04R9/02—Details

Landscapes

  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Engineering & Computer Science (AREA)
  • Analytical Chemistry (AREA)
  • Signal Processing (AREA)
  • Health & Medical Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Chemical & Material Sciences (AREA)
  • Acoustics & Sound (AREA)
  • Biochemistry (AREA)
  • General Health & Medical Sciences (AREA)
  • General Physics & Mathematics (AREA)
  • Immunology (AREA)
  • Pathology (AREA)
  • Mechanical Engineering (AREA)
  • Investigating Or Analyzing Materials By The Use Of Ultrasonic Waves (AREA)
DE2621684A 1976-05-15 1976-05-15 Elektrodynamischer Schallwandler Expired DE2621684C3 (de)

Priority Applications (9)

Application Number Priority Date Filing Date Title
DE2621684A DE2621684C3 (de) 1976-05-15 1976-05-15 Elektrodynamischer Schallwandler
AT0180177A AT379689B (de) 1976-05-15 1977-03-16 Elektrodynamischer schallwandler
IT49036/77A IT1086574B (it) 1976-05-15 1977-04-20 Trasduttore acustico elettrodinamico
NLAANVRAGE7704458,A NL173608C (nl) 1976-05-15 1977-04-22 Elektro-dynamische geluidsomzetter voor niet destructief materiaalonderzoek.
GB17652/77A GB1549902A (en) 1976-05-15 1977-04-27 Electrodynamic acoustic transducer
FR7714723A FR2350890A1 (fr) 1976-05-15 1977-05-13 Transducteur acoustique electrodynamique
LU77330A LU77330A1 (enExample) 1976-05-15 1977-05-13
BE177550A BE854605A (fr) 1976-05-15 1977-05-13 Transducteur acoustique electrodynamique
US05/796,883 US4138896A (en) 1976-05-15 1977-05-16 Electrodynamic sound converter

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE2621684A DE2621684C3 (de) 1976-05-15 1976-05-15 Elektrodynamischer Schallwandler

Publications (3)

Publication Number Publication Date
DE2621684A1 DE2621684A1 (de) 1977-11-24
DE2621684B2 DE2621684B2 (de) 1978-10-26
DE2621684C3 true DE2621684C3 (de) 1979-07-12

Family

ID=5978074

Family Applications (1)

Application Number Title Priority Date Filing Date
DE2621684A Expired DE2621684C3 (de) 1976-05-15 1976-05-15 Elektrodynamischer Schallwandler

Country Status (9)

Country Link
US (1) US4138896A (enExample)
AT (1) AT379689B (enExample)
BE (1) BE854605A (enExample)
DE (1) DE2621684C3 (enExample)
FR (1) FR2350890A1 (enExample)
GB (1) GB1549902A (enExample)
IT (1) IT1086574B (enExample)
LU (1) LU77330A1 (enExample)
NL (1) NL173608C (enExample)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0071147A1 (de) * 1981-07-21 1983-02-09 Nukem GmbH Zerstörungsfreie Prüfung von ferromagnetischen Materialien

Families Citing this family (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3123935C2 (de) * 1981-06-16 1985-03-28 Nukem Gmbh, 6450 Hanau Elektrodynamischer Wandler
GB8420244D0 (en) * 1984-08-09 1984-09-12 Shell Int Research Transducing device
DE3511768C2 (de) * 1985-03-30 1994-06-09 Betr Forsch Inst Angew Forsch Elektromagnetischer Wandler
ES2033288T3 (es) * 1986-12-11 1993-03-16 Siemens Aktiengesellschaft Instalacion para la calibracion de un sistema de supervision del sonido estructural.
DE4035592C1 (enExample) * 1990-11-06 1992-04-16 Mannesmann Ag, 4000 Duesseldorf, De
DE19637424A1 (de) * 1996-09-13 1998-03-26 Siemens Ag Verfahren zum Erzeugen horizontal polarisierter transversaler Ultraschallwellen zur zerstörungsfreien Werkstoffprüfung und Prüfvorrichtung
DE10045693A1 (de) 2000-09-15 2002-04-04 Infineon Technologies Ag Ladungspumpenschaltung
GB2619000A (en) * 2022-05-16 2023-11-29 Jr Dynamics Ltd Ultrasonic transducer

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB425201A (en) * 1933-06-14 1935-03-08 Geigy Ag J R An improvement in the production of leather
US3460063A (en) * 1968-07-26 1969-08-05 James R Houck Ultrasonic transducer
US3583213A (en) * 1968-07-26 1971-06-08 James R Houck Nondestructive testing of conductive objects using ultrasonic waves
DE2026936A1 (de) * 1970-06-02 1971-12-16 Davidts D Ultraschallschwinger zur Erzeugung homo gener Schallfelder
SU426716A1 (ru) * 1972-04-04 1974-05-05 Ж. Г. Никифоренко, И. И. Авербух, Н. Г. Бочков , Г. В. Парфенов Устройство для бесконтактного возбуждения и приема ультразвука
US3963980A (en) * 1973-08-29 1976-06-15 Jury Mikhailovich Shkarlet Ultrasonic instrument for non-destructive testing of articles with current-conducting surface
FR2245251A5 (en) * 1973-09-25 1975-04-18 Inst Introskopii Non-destructive ultrasonic tester of workpieces - has electrically conductive surface for quality control and thickness measurement

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0071147A1 (de) * 1981-07-21 1983-02-09 Nukem GmbH Zerstörungsfreie Prüfung von ferromagnetischen Materialien

Also Published As

Publication number Publication date
FR2350890B1 (enExample) 1983-12-09
US4138896A (en) 1979-02-13
IT1086574B (it) 1985-05-28
NL173608B (nl) 1983-09-16
GB1549902A (en) 1979-08-08
DE2621684B2 (de) 1978-10-26
NL7704458A (nl) 1977-11-17
ATA180177A (de) 1985-06-15
NL173608C (nl) 1984-02-16
LU77330A1 (enExample) 1977-12-13
BE854605A (fr) 1977-11-14
AT379689B (de) 1986-02-10
FR2350890A1 (fr) 1977-12-09
DE2621684A1 (de) 1977-11-24

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Legal Events

Date Code Title Description
OD Request for examination
C3 Grant after two publication steps (3rd publication)
8327 Change in the person/name/address of the patent owner

Owner name: ESTEL HOESCH WERKE AG, 4600 DORTMUND, DE

8327 Change in the person/name/address of the patent owner

Owner name: HOESCH WERKE AG, 4600 DORTMUND, DE

8327 Change in the person/name/address of the patent owner

Owner name: HOESCH AG, 4600 DORTMUND, DE

8327 Change in the person/name/address of the patent owner

Owner name: KOPINECK, HERMANN-JOSEF, PROF. DR.RER.NAT., 4600 D