GB1294219A - Method of detecting and measuring the vibrations of objects by means of ultrasonics - Google Patents

Method of detecting and measuring the vibrations of objects by means of ultrasonics

Info

Publication number
GB1294219A
GB1294219A GB41820/70A GB4182070A GB1294219A GB 1294219 A GB1294219 A GB 1294219A GB 41820/70 A GB41820/70 A GB 41820/70A GB 4182070 A GB4182070 A GB 4182070A GB 1294219 A GB1294219 A GB 1294219A
Authority
GB
United Kingdom
Prior art keywords
vibration
frequency
transducer
sept
amplitude
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
GB41820/70A
Inventor
Jean Marini
Maurice Roule
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 GB1294219A publication Critical patent/GB1294219A/en
Expired legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G21—NUCLEAR PHYSICS; NUCLEAR ENGINEERING
    • G21C—NUCLEAR REACTORS
    • G21C17/00—Monitoring; Testing ; Maintaining
    • G21C17/10—Structural combination of fuel element, control rod, reactor core, or moderator structure with sensitive instruments, e.g. for measuring radioactivity, strain
    • 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)
  • Plasma & Fusion (AREA)
  • General Engineering & Computer Science (AREA)
  • High Energy & Nuclear Physics (AREA)
  • Monitoring And Testing Of Nuclear Reactors (AREA)
  • Investigating Or Analyzing Materials By The Use Of Ultrasonic Waves (AREA)

Abstract

1294219 Detecing vibration ultrasonically COMMISSARIAT A L'ENERGIE ATOMIQUE 1 Sept 1970 [15 Sept 1969] 41820/70 Heading H4D A method of detecting vibration in an object I comprises transmitting sound waves from a transducer 4 at a repetition frequency much higher than any expected vibration frequency under the control of a pulse generator 6; selecting echo signals from the transducer 4 using a range gate 13 whose delay is proportional to the transducer-object distance and measuring the amplitude and frequency of the echo signal envelope after the echo signals have passed through a low pass filter 14 whose cut-off is less than the repetition frequency of the emitted sound waves. The amplitude and frequency of the vibration of an object 1 immersed in liquid sodium 2 in a chamber 3 of a fast nuclear reactor are recorded on a paper recorder or oscilloscope 15. The p.r.f. is between 200 Hz and 1000 Hz and the filter cut-off is 50 Hz.
GB41820/70A 1969-09-15 1970-09-01 Method of detecting and measuring the vibrations of objects by means of ultrasonics Expired GB1294219A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR6931291A FR2058542A5 (en) 1969-09-15 1969-09-15

Publications (1)

Publication Number Publication Date
GB1294219A true GB1294219A (en) 1972-10-25

Family

ID=9040069

Family Applications (1)

Application Number Title Priority Date Filing Date
GB41820/70A Expired GB1294219A (en) 1969-09-15 1970-09-01 Method of detecting and measuring the vibrations of objects by means of ultrasonics

Country Status (3)

Country Link
DE (1) DE2045566A1 (en)
FR (1) FR2058542A5 (en)
GB (1) GB1294219A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20120285246A1 (en) * 2009-12-22 2012-11-15 Kabushiki Kaisha Toshiba Nuclear reactor vibration monitoring device and monitoring method thereof

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2483671A1 (en) * 1980-05-29 1981-12-04 Framatome Sa Monitoring nuclear reactor core - using acoustic sensors and computer to detect accidents, or damage to fuel rods

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20120285246A1 (en) * 2009-12-22 2012-11-15 Kabushiki Kaisha Toshiba Nuclear reactor vibration monitoring device and monitoring method thereof
US9099206B2 (en) * 2009-12-22 2015-08-04 Kabushiki Kaisha Toshiba Nuclear reactor vibration monitoring device and monitoring method thereof

Also Published As

Publication number Publication date
FR2058542A5 (en) 1971-05-28
DE2045566A1 (en) 1971-04-22

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Legal Events

Date Code Title Description
PS Patent sealed
PLNP Patent lapsed through nonpayment of renewal fees