FR2262303A1 - Position detector for source of strain waves - employs piezoelectric transducer network with counter and computer - Google Patents

Position detector for source of strain waves - employs piezoelectric transducer network with counter and computer

Info

Publication number
FR2262303A1
FR2262303A1 FR7406207A FR7406207A FR2262303A1 FR 2262303 A1 FR2262303 A1 FR 2262303A1 FR 7406207 A FR7406207 A FR 7406207A FR 7406207 A FR7406207 A FR 7406207A FR 2262303 A1 FR2262303 A1 FR 2262303A1
Authority
FR
France
Prior art keywords
source
counter
computer
position detector
piezoelectric 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.)
Granted
Application number
FR7406207A
Other languages
French (fr)
Other versions
FR2262303B1 (en
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
Priority to FR7406207A priority Critical patent/FR2262303A1/en
Publication of FR2262303A1 publication Critical patent/FR2262303A1/en
Application granted granted Critical
Publication of FR2262303B1 publication Critical patent/FR2262303B1/fr
Granted 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
    • G01N29/36—Detecting the response signal, e.g. electronic circuits specially adapted therefor
    • G01N29/40—Detecting the response signal, e.g. electronic circuits specially adapted therefor by amplitude filtering, e.g. by applying a threshold or by gain control
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01H—MEASUREMENT OF MECHANICAL VIBRATIONS OR ULTRASONIC, SONIC OR INFRASONIC WAVES
    • G01H1/00—Measuring characteristics of vibrations in solids by using direct conduction to the detector
    • 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
    • G01N29/14—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 using acoustic emission techniques
    • 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
    • G01N29/34—Generating the ultrasonic, sonic or infrasonic waves, e.g. electronic circuits specially adapted therefor
    • G01N29/341—Generating the ultrasonic, sonic or infrasonic waves, e.g. electronic circuits specially adapted therefor with time characteristics
    • 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
    • G01S5/00—Position-fixing by co-ordinating two or more direction or position line determinations; Position-fixing by co-ordinating two or more distance determinations
    • G01S5/18—Position-fixing by co-ordinating two or more direction or position line determinations; Position-fixing by co-ordinating two or more distance determinations using ultrasonic, sonic, or infrasonic waves
    • G01S5/22—Position of source determined by co-ordinating a plurality of position lines defined by path-difference measurements
    • 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
    • G10K11/34—Sound-focusing or directing, e.g. scanning using electrical steering of transducer arrays, e.g. beam steering
    • G10K11/341—Circuits therefor
    • G—PHYSICS
    • G21—NUCLEAR PHYSICS; NUCLEAR ENGINEERING
    • G21C—NUCLEAR REACTORS
    • G21C17/00—Monitoring; Testing ; Maintaining
    • 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
    • G01N2291/02—Indexing codes associated with the analysed material
    • G01N2291/028—Material parameters
    • G01N2291/02854—Length, thickness
    • 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
    • G01N2291/10—Number of transducers
    • G01N2291/106—Number of transducers one or more transducer arrays
    • 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)
  • General Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Analytical Chemistry (AREA)
  • Chemical & Material Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Biochemistry (AREA)
  • General Health & Medical Sciences (AREA)
  • Immunology (AREA)
  • Pathology (AREA)
  • Health & Medical Sciences (AREA)
  • Acoustics & Sound (AREA)
  • Remote Sensing (AREA)
  • Radar, Positioning & Navigation (AREA)
  • Multimedia (AREA)
  • Plasma & Fusion (AREA)
  • General Engineering & Computer Science (AREA)
  • High Energy & Nuclear Physics (AREA)
  • Monitoring And Testing Of Nuclear Reactors (AREA)
  • Measurement Of Length, Angles, Or The Like Using Electric Or Magnetic Means (AREA)

Abstract

The simultaneous location of the sources of emission of strain waves is used for test and surveillance of large structures such as in nuclear reactors. A number of piezo electric transducers (28) are arranged in a mesh of diamond shapes over the surface area. Signals from the transducers are amplified (46) in a circuit which can be switched to cause the transducer to transmit. A high pass filter (48) situated at a distance from the output of the amplifier is connected to a discriminator (50) with a low pass circuit (56) providing an average valve noise threshold signal. The discriminator outputs are then processed by logic circuits for application to counting circuits and to a computer memory to determine source of an emission.
FR7406207A 1974-02-22 1974-02-22 Position detector for source of strain waves - employs piezoelectric transducer network with counter and computer Granted FR2262303A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
FR7406207A FR2262303A1 (en) 1974-02-22 1974-02-22 Position detector for source of strain waves - employs piezoelectric transducer network with counter and computer

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR7406207A FR2262303A1 (en) 1974-02-22 1974-02-22 Position detector for source of strain waves - employs piezoelectric transducer network with counter and computer

Publications (2)

Publication Number Publication Date
FR2262303A1 true FR2262303A1 (en) 1975-09-19
FR2262303B1 FR2262303B1 (en) 1977-09-30

Family

ID=9135356

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7406207A Granted FR2262303A1 (en) 1974-02-22 1974-02-22 Position detector for source of strain waves - employs piezoelectric transducer network with counter and computer

Country Status (1)

Country Link
FR (1) FR2262303A1 (en)

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1982000893A1 (en) * 1980-09-10 1982-03-18 Gewertec Gmbh Method and device for the localisation and analysis of sound emissions
DE3033990A1 (en) * 1980-09-10 1982-04-15 GeWerTec Gesellschaft für Werkstofftechnik mbH, 4600 Dortmund Sound-emission locator and analyser for non-destructive testing - has test head containing acousto-electric transducers to determine direction of incident sound pulses
FR2498320A1 (en) * 1981-01-16 1982-07-23 Cgr ACOUSTIC SOURCE DETECTION METHOD AND ACOUSTIC TRANSMISSION CONTROL APPARATUS
EP0140174A1 (en) * 1983-10-05 1985-05-08 Siemens Aktiengesellschaft Method and device for locating a leakage in a vessel under pressure
WO1991010905A1 (en) * 1990-01-22 1991-07-25 Nordco Limited Areal sound intensity receiver
WO1997047965A1 (en) * 1996-06-13 1997-12-18 Mathias Fink Method and device for detecting and locating a reverberating source of sound
US6946518B2 (en) 2001-05-04 2005-09-20 L'oreal S.A. Composition comprising at least one first semi-crystalline polymer and at least one second film-forming polymer
WO2019073179A1 (en) * 2017-10-12 2019-04-18 Commissariat A L'energie Atomique Et Aux Energies Alternatives Device and method for detecting defects in a structure
FR3078162A1 (en) * 2018-02-20 2019-08-23 Commissariat A L'energie Atomique Et Aux Energies Alternatives DEVICE AND METHOD FOR DETECTING DEFECTS OF A STRUCTURE

Cited By (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1982000893A1 (en) * 1980-09-10 1982-03-18 Gewertec Gmbh Method and device for the localisation and analysis of sound emissions
DE3033990A1 (en) * 1980-09-10 1982-04-15 GeWerTec Gesellschaft für Werkstofftechnik mbH, 4600 Dortmund Sound-emission locator and analyser for non-destructive testing - has test head containing acousto-electric transducers to determine direction of incident sound pulses
US4459851A (en) * 1980-09-10 1984-07-17 Crostack Horst A Method and device for the localization and analysis of sound emissions
FR2498320A1 (en) * 1981-01-16 1982-07-23 Cgr ACOUSTIC SOURCE DETECTION METHOD AND ACOUSTIC TRANSMISSION CONTROL APPARATUS
EP0056553A1 (en) * 1981-01-16 1982-07-28 Hbs Procedure for the detection of acoustic sources and apparatus for surveillance by acoustic emissions
EP0140174A1 (en) * 1983-10-05 1985-05-08 Siemens Aktiengesellschaft Method and device for locating a leakage in a vessel under pressure
WO1991010905A1 (en) * 1990-01-22 1991-07-25 Nordco Limited Areal sound intensity receiver
WO1997047965A1 (en) * 1996-06-13 1997-12-18 Mathias Fink Method and device for detecting and locating a reverberating source of sound
FR2749938A1 (en) * 1996-06-13 1997-12-19 Fink Mathias METHOD AND DEVICE FOR DETECTING AND LOCATING REFLECTIVE SOUND SOURCE
US6161434A (en) * 1996-06-13 2000-12-19 Fink; Mathias Method and device for detecting and locating a reflecting sound source
US6946518B2 (en) 2001-05-04 2005-09-20 L'oreal S.A. Composition comprising at least one first semi-crystalline polymer and at least one second film-forming polymer
US7358303B2 (en) 2001-05-04 2008-04-15 L'Oréal, S.A. Composition comprising at least one first semi-crystalline polymer and at least one second film-forming polymer
WO2019073179A1 (en) * 2017-10-12 2019-04-18 Commissariat A L'energie Atomique Et Aux Energies Alternatives Device and method for detecting defects in a structure
US11249050B2 (en) 2017-10-12 2022-02-15 Safran Device and method for detecting faults of a structure
FR3078162A1 (en) * 2018-02-20 2019-08-23 Commissariat A L'energie Atomique Et Aux Energies Alternatives DEVICE AND METHOD FOR DETECTING DEFECTS OF A STRUCTURE

Also Published As

Publication number Publication date
FR2262303B1 (en) 1977-09-30

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Legal Events

Date Code Title Description
ST Notification of lapse