GB1406712A - Device for emitting or receiving sonic or ultrasonic acoustic waves - Google Patents

Device for emitting or receiving sonic or ultrasonic acoustic waves

Info

Publication number
GB1406712A
GB1406712A GB4294572A GB4294572A GB1406712A GB 1406712 A GB1406712 A GB 1406712A GB 4294572 A GB4294572 A GB 4294572A GB 4294572 A GB4294572 A GB 4294572A GB 1406712 A GB1406712 A GB 1406712A
Authority
GB
United Kingdom
Prior art keywords
mirror
acoustic
focus
reflected
axis
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
GB4294572A
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.)
Commissariat a lEnergie Atomique et aux Energies Alternatives CEA
Original Assignee
Commissariat a lEnergie Atomique CEA
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 Commissariat a lEnergie Atomique CEA filed Critical Commissariat a lEnergie Atomique CEA
Publication of GB1406712A publication Critical patent/GB1406712A/en
Expired legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01S—RADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES
    • G01S3/00—Direction-finders for determining the direction from which infrasonic, sonic, ultrasonic, or electromagnetic waves, or particle emission, not having a directional significance, are being received
    • G01S3/80—Direction-finders for determining the direction from which infrasonic, sonic, ultrasonic, or electromagnetic waves, or particle emission, not having a directional significance, are being received using ultrasonic, sonic or infrasonic waves
    • G01S3/802—Systems for determining direction or deviation from predetermined direction
    • G01S3/805—Systems for determining direction or deviation from predetermined direction using adjustment of real or effective orientation of directivity characteristics of a transducer or transducer system to give a desired condition of signal derived from that transducer or transducer system, e.g. to give a maximum or minimum signal
    • G01S3/8055—Systems for determining direction or deviation from predetermined direction using adjustment of real or effective orientation of directivity characteristics of a transducer or transducer system to give a desired condition of signal derived from that transducer or transducer system, e.g. to give a maximum or minimum signal adjusting orientation of a single directivity characteristic to produce maximum or minimum signal
    • 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
    • G10K11/18—Methods or devices for transmitting, conducting or directing sound
    • G10K11/26—Sound-focusing or directing, e.g. scanning
    • G10K11/28—Sound-focusing or directing, e.g. scanning using reflection, e.g. parabolic reflectors
    • G—PHYSICS
    • G21—NUCLEAR PHYSICS; NUCLEAR ENGINEERING
    • G21C—NUCLEAR REACTORS
    • G21C17/00—Monitoring; Testing ; Maintaining
    • G21C17/08—Structural combination of reactor core or moderator structure with viewing means, e.g. with television camera, periscope, window
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E30/00—Energy generation of nuclear origin
    • Y02E30/30—Nuclear fission reactors

Landscapes

  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • General Physics & Mathematics (AREA)
  • Radar, Positioning & Navigation (AREA)
  • Remote Sensing (AREA)
  • Acoustics & Sound (AREA)
  • Multimedia (AREA)
  • Plasma & Fusion (AREA)
  • General Engineering & Computer Science (AREA)
  • High Energy & Nuclear Physics (AREA)
  • Investigating Or Analyzing Materials By The Use Of Ultrasonic Waves (AREA)

Abstract

1406712 Acoustic probes etc.; acoustic reflectors COMMISSARIAT A L'ENERGIE ATOMIQUE 15 Sept 1972 [16 Sept 1971] 42945/72 Headings H4J and H4X The direction of a sound source, location of an obstacle in a vessel or the non-destructive testing of a surface is determined by a movable device 7 (Figs. 2, 3) carrying one or more acoustically reflective surfaces 2, 27. The movable device 7 is rotatably mounted about an axis X 1 , X 2 on a frame 6. A plane acoustic mirror 29 is also rotatably mounted about axis X 1 , X 2 on frame 6. A rotatable shaft 15 carries two gear-wheels 10a, 10b engaging toothed rims 11a, 11b, thus simultaneously rotating two shafts 30, 31 which are secured to mirror 29 and device 7. Shaft 30 secured to mirror 29 rotates at half the speed of shaft 31. The device 7 and frame 6 are rotatable about axis OZ by means of a motor (not shown) actuating a gear-wheel 16 engaging teeth 17 on an abutment 8. Member 6 can be moved backwards and forwards in a cylinder 18 by an actuator 19. As shown in Fig. 2 the surface 2 is a concave acoustically reflective surface in the form of an ellipsoid of revolution. The surface 27 is a convex surface in the form of a paraboloid of revolution. The surfaces 2, 27 have a coincident focus F. A transducer 28, e.g. piezoelectric, is used for transmitting and receiving and, when transmitting, a continuous beam (or s series of wave trains) after being reflected by mirror 29 travels to aperture 3 and is reflected by surfaces 27 and 2 to converge to a second focus of surface 2. After striking an obstacle the beam returns by the same path to transducer 28 which this time acts as a receiver. If desired, an acoustic plane mirror (32), Fig. 4 (not shown) is hinged to the open end of surface 2. The path of rays is the same as in Fig. 2, except that the rays are reflected to produce a beam which converges at a point displaced relative to the second focus of surface 2. The mirror (32) may be simultaneously rotated and translated to permit helical scanning from the second focus of surface 2. The inner wall of a conduit may thereby be scanned. In an alternative embodiment (Fig. 6, not shown) surfaces 2, 27 are replaced by a plane acoustic mirror (34) parallel to pivot axis X 1 , X 2 and disposed perpendicular to the parallel beam reflected by mirror 29. If the mirror (34) is removed the reflection at a liquid sodium-metal interface may be studied. Yet another embodiment (Fig. 5, not shown) is made up of two coaxial concave acoustic mirrors (35, 36) in the form of parabolas inverted with respect to one another. If the device is immersed in liquid the flat mirror 29 should have an acoustic impedance as different as possible from that of the surrounding liquid.
GB4294572A 1971-09-16 1972-09-15 Device for emitting or receiving sonic or ultrasonic acoustic waves Expired GB1406712A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR7133405A FR2152467B1 (en) 1971-09-16 1971-09-16

Publications (1)

Publication Number Publication Date
GB1406712A true GB1406712A (en) 1975-09-17

Family

ID=9083054

Family Applications (1)

Application Number Title Priority Date Filing Date
GB4294572A Expired GB1406712A (en) 1971-09-16 1972-09-15 Device for emitting or receiving sonic or ultrasonic acoustic waves

Country Status (4)

Country Link
ES (1) ES406760A1 (en)
FR (1) FR2152467B1 (en)
GB (1) GB1406712A (en)
IT (1) IT974972B (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2003052736A1 (en) * 2001-11-26 2003-06-26 Kimberly-Clark Worldwide, Inc. Apparatus for focussing ultrasonic acoustical energy within a liquid stream

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1488478A (en) * 1974-12-12 1977-10-12 Atomic Energy Authority Uk Liquid metal cooled nuclear reactors

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2003052736A1 (en) * 2001-11-26 2003-06-26 Kimberly-Clark Worldwide, Inc. Apparatus for focussing ultrasonic acoustical energy within a liquid stream
US6776352B2 (en) 2001-11-26 2004-08-17 Kimberly-Clark Worldwide, Inc. Apparatus for controllably focusing ultrasonic acoustical energy within a liquid stream

Also Published As

Publication number Publication date
IT974972B (en) 1974-07-10
ES406760A1 (en) 1975-10-01
FR2152467B1 (en) 1974-03-29
FR2152467A1 (en) 1973-04-27

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Legal Events

Date Code Title Description
PS Patent sealed
PCNP Patent ceased through non-payment of renewal fee