DE4007631C2 - - Google Patents

Info

Publication number
DE4007631C2
DE4007631C2 DE19904007631 DE4007631A DE4007631C2 DE 4007631 C2 DE4007631 C2 DE 4007631C2 DE 19904007631 DE19904007631 DE 19904007631 DE 4007631 A DE4007631 A DE 4007631A DE 4007631 C2 DE4007631 C2 DE 4007631C2
Authority
DE
Germany
Prior art keywords
layers
sound
test head
head according
ultrasonic test
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 - Lifetime
Application number
DE19904007631
Other languages
German (de)
English (en)
Other versions
DE4007631A1 (de
Inventor
Wolfgang Dipl.-Phys. Dr. 6683 Spiesen De Gebhardt
Helmut Ing.(Grad.) 6602 Dudweiler De 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 Foerderung der Angewandten Forschung eV
Original Assignee
Fraunhofer Gesellschaft zur Foerderung 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 Foerderung der Angewandten Forschung eV filed Critical Fraunhofer Gesellschaft zur Foerderung der Angewandten Forschung eV
Priority to DE19904007631 priority Critical patent/DE4007631A1/de
Publication of DE4007631A1 publication Critical patent/DE4007631A1/de
Application granted granted Critical
Publication of DE4007631C2 publication Critical patent/DE4007631C2/de
Granted 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
    • B06B1/0681—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
    • 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
    • G10K11/16—Methods or devices for protecting against, or for damping, noise or other acoustic waves in general
    • G10K11/162—Selection of materials
    • G10K11/168—Plural layers of different materials, e.g. sandwiches

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Acoustics & Sound (AREA)
  • Multimedia (AREA)
  • Investigating Or Analyzing Materials By The Use Of Ultrasonic Waves (AREA)
  • Transducers For Ultrasonic Waves (AREA)
DE19904007631 1989-03-16 1990-03-10 Ultraschallpruefkopf Granted DE4007631A1 (de)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DE19904007631 DE4007631A1 (de) 1989-03-16 1990-03-10 Ultraschallpruefkopf

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3908621 1989-03-16
DE19904007631 DE4007631A1 (de) 1989-03-16 1990-03-10 Ultraschallpruefkopf

Publications (2)

Publication Number Publication Date
DE4007631A1 DE4007631A1 (de) 1990-09-20
DE4007631C2 true DE4007631C2 (enrdf_load_stackoverflow) 1992-01-30

Family

ID=25878873

Family Applications (1)

Application Number Title Priority Date Filing Date
DE19904007631 Granted DE4007631A1 (de) 1989-03-16 1990-03-10 Ultraschallpruefkopf

Country Status (1)

Country Link
DE (1) DE4007631A1 (enrdf_load_stackoverflow)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP3384176B1 (en) 2015-12-03 2021-11-24 Viasat, Inc. Vibration isolation apparatuses for crystal oscillators

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE8312691U1 (de) * 1983-04-29 1984-09-20 Krautkrämer GmbH, 5000 Köln Ultraschallprüfkopf für hohe Arbeitstemperaturen
DE3540610A1 (de) * 1985-11-15 1987-05-21 Fraunhofer Ges Forschung Ultraschallpruefkopf

Also Published As

Publication number Publication date
DE4007631A1 (de) 1990-09-20

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Legal Events

Date Code Title Description
OP8 Request for examination as to paragraph 44 patent law
D2 Grant after examination
8364 No opposition during term of opposition
8320 Willingness to grant licenses declared (paragraph 23)