GB1088741A - A device for emitting and receiving ultra-sonic vibrations - Google Patents

A device for emitting and receiving ultra-sonic vibrations

Info

Publication number
GB1088741A
GB1088741A GB182/65A GB18265A GB1088741A GB 1088741 A GB1088741 A GB 1088741A GB 182/65 A GB182/65 A GB 182/65A GB 18265 A GB18265 A GB 18265A GB 1088741 A GB1088741 A GB 1088741A
Authority
GB
United Kingdom
Prior art keywords
transducers
resonant frequencies
resonant
jan
source
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
GB182/65A
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.)
Institut de Recherches de la Siderurgie Francaise IRSID
Original Assignee
Institut de Recherches de la Siderurgie Francaise IRSID
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
Priority claimed from FR959216A external-priority patent/FR1390283A/en
Application filed by Institut de Recherches de la Siderurgie Francaise IRSID filed Critical Institut de Recherches de la Siderurgie Francaise IRSID
Publication of GB1088741A publication Critical patent/GB1088741A/en
Expired legal-status Critical Current

Links

Classifications

    • 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
    • G01N29/2487—Directing probes, e.g. angle probes
    • 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
    • B06B1/0207—Driving circuits
    • B06B1/0223—Driving circuits for generating signals continuous in time
    • B06B1/0269—Driving circuits for generating signals continuous in time for generating multiple frequencies
    • B06B1/0276—Driving circuits for generating signals continuous in time for generating multiple frequencies with simultaneous generation, e.g. with modulation, harmonics
    • 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
    • B06B1/0607—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 multiple elements
    • 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
    • G01N29/2437—Piezoelectric probes
    • 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
    • G10K15/00—Acoustics not otherwise provided for
    • G10K15/02—Synthesis of acoustic waves
    • 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
    • B06B2201/00—Indexing scheme associated with B06B1/0207 for details covered by B06B1/0207 but not provided for in any of its subgroups
    • B06B2201/20—Application to multi-element transducer
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N2291/00—Indexing codes associated with group G01N29/00
    • G01N2291/04—Wave modes and trajectories
    • G01N2291/042—Wave modes
    • G01N2291/0427—Flexural waves, plate waves, e.g. Lamb waves, tuning fork, cantilever

Abstract

1,088,741. Ultrasonic devices; ultrasonic testing. INSTITUT DE RECHERCHES DE LA SIDERURGIE FRANCAISE. Jan. 1, 1965 [Jan. 3, 1964], No. 182/65. Headings H4D and H4J. A device for transmitting and receiving ultrasonic vibrations, and applicable to the detection of flaws and discontinuities in materials, comprises at least two parallel connected electromechanical transducers 1, 2 (e.g. piezoelectric crystals) having different resonant frequencies, an inductive element 7 in parallel with the transducers 1, 2, the element 7 together with the capacitances of the transducers 1, 2 forming at least part of a resonant system having a resonant frequency intermediate the resonant frequencies of the transducers 1, 2, and a source 3 of electrical energy. Source 3 is a pulse generator. The transducers 1, 2 are preferably cemented to a wedge 9 of polymethyl methacrylate. The circuit is arranged to resonate at a frequency between the resonant frequencies of the transducers 1, 2, adjustment being provided by element 7. A broad band output is thereby obtained. For example if the resonant frequencies of the elements 1 and 2 are 1À1 and 1À6 Mc/s. respectively the device provides a useful frequency range of 0À9 to 1À8 Mc/s., approximately, and Lamb waves may be used to scan articles of a thickness varying between 1À5 and 4À7 mm.
GB182/65A 1964-01-03 1965-01-01 A device for emitting and receiving ultra-sonic vibrations Expired GB1088741A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR959216A FR1390283A (en) 1964-01-03 1964-01-03 Improvements to devices emitting and receiving ultra-sound energy
LU47671A LU47671A1 (en) 1964-01-03 1964-12-28 Improvements to devices transmitting and receiving ultra-sonic energy

Publications (1)

Publication Number Publication Date
GB1088741A true GB1088741A (en) 1967-10-25

Family

ID=26205194

Family Applications (1)

Application Number Title Priority Date Filing Date
GB182/65A Expired GB1088741A (en) 1964-01-03 1965-01-01 A device for emitting and receiving ultra-sonic vibrations

Country Status (1)

Country Link
GB (1) GB1088741A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2005087392A1 (en) * 2004-03-04 2005-09-22 Immersion Corporation Haptic devices having multiple operational modes including at least one resonant mode
US20160052020A1 (en) * 2014-08-19 2016-02-25 Innochips Technology Co., Ltd. Piezoelectric device and electronic device including the same

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US8576174B2 (en) 2002-04-25 2013-11-05 Immersion Corporation Haptic devices having multiple operational modes including at least one resonant mode
WO2005087392A1 (en) * 2004-03-04 2005-09-22 Immersion Corporation Haptic devices having multiple operational modes including at least one resonant mode
GB2427014A (en) * 2004-03-04 2006-12-13 Immersion Corp Haptic devices having multiple operational modes including at least one resonant mode
GB2427014B (en) * 2004-03-04 2008-08-20 Immersion Corp Haptic devices having multiple operational modes including at least one resonant mode
US20160052020A1 (en) * 2014-08-19 2016-02-25 Innochips Technology Co., Ltd. Piezoelectric device and electronic device including the same

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