GB1482662A - Method of testing the quality of spherical particles - Google Patents

Method of testing the quality of spherical particles

Info

Publication number
GB1482662A
GB1482662A GB33339/74A GB3333974A GB1482662A GB 1482662 A GB1482662 A GB 1482662A GB 33339/74 A GB33339/74 A GB 33339/74A GB 3333974 A GB3333974 A GB 3333974A GB 1482662 A GB1482662 A GB 1482662A
Authority
GB
United Kingdom
Prior art keywords
particles
transducer
signals
fed
filter
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
GB33339/74A
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.)
European Atomic Energy Community Euratom
Original Assignee
European Atomic Energy Community Euratom
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 European Atomic Energy Community Euratom filed Critical European Atomic Energy Community Euratom
Publication of GB1482662A publication Critical patent/GB1482662A/en
Expired legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G21—NUCLEAR PHYSICS; NUCLEAR ENGINEERING
    • G21C—NUCLEAR REACTORS
    • G21C17/00—Monitoring; Testing ; Maintaining
    • G21C17/06—Devices or arrangements for monitoring or testing fuel or fuel elements outside the reactor core, e.g. for burn-up, for contamination
    • G21C17/066—Control of spherical 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
    • G01N29/04—Analysing solids
    • G01N29/045—Analysing solids by imparting shocks to the workpiece and detecting the vibrations or the acoustic waves caused by the shocks
    • G01N29/046—Analysing solids by imparting shocks to the workpiece and detecting the vibrations or the acoustic waves caused by the shocks using the echo of particles imparting on a surface; using acoustic emission of particles
    • 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
    • G01N29/228—Details, e.g. general constructional or apparatus details related to high temperature conditions
    • 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
    • G01N2291/023—Solids
    • G01N2291/0231—Composite or layered materials
    • 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
    • G01N2291/26—Scanned objects
    • G01N2291/265—Spherical objects
    • 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

Abstract

1482662 Acoustic inspection of particles EUROPEAN ATOMIC ENERGY COMMUNITY (EURATOM) 29 July 1974 [30 July 1973] 33339/74 Heading G1G The quality of spherical particles is tested by causing them to impact a transducer the respective electrical outputs of which are amplified then fed to a high-pass filter. The numbers of signals respectively fed to and passed by the filter are compared and the frequency spectrum of selected ones of the filtered signals is determined. In the Fig. 1 embodiment, nuclear reactor fuel particles are passed through a heating tube 2 to raise them to their normal operating temperature, then dropped on to transducer 3 which has electronic means to overcome the effect of internal acoustic reflection in the transducer. The transducer output signals are fed to filter 6 which passes only signals expected from defect-free particles. Counters 5, 7 establish the total number of particles and the number of defect-free particles respectively. The envelope and frequency spectrum of the transducer signals are analyzed using oscilloscope 9 to detect defects in, thickness of or faulty bonding between layers of material constituting the particles. Units 8, 10 and 11 are recording devices.
GB33339/74A 1973-07-30 1974-07-29 Method of testing the quality of spherical particles Expired GB1482662A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
IT51724/73A IT990064B (en) 1973-07-30 1973-07-30 SYSTEM FOR THE CONTROL OF BALLS MADE UP OF LAYERS OF DIFFERENT MATERIALS

Publications (1)

Publication Number Publication Date
GB1482662A true GB1482662A (en) 1977-08-10

Family

ID=11275630

Family Applications (1)

Application Number Title Priority Date Filing Date
GB33339/74A Expired GB1482662A (en) 1973-07-30 1974-07-29 Method of testing the quality of spherical particles

Country Status (9)

Country Link
BE (1) BE817788A (en)
DE (2) DE2436243A1 (en)
DK (1) DK398774A (en)
FR (1) FR2239686B1 (en)
GB (1) GB1482662A (en)
IE (1) IE39628B1 (en)
IT (1) IT990064B (en)
LU (1) LU70597A1 (en)
NL (1) NL7410237A (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2137347A (en) * 1983-03-31 1984-10-03 Nat Res Dev Improvements in or relating to the testing of structures by impact
GB2143036A (en) * 1983-07-08 1985-01-30 Atomic Energy Authority Uk Ultrasonic resonance for detecting changes in elastic properties
FR2940444A1 (en) * 2008-12-24 2010-06-25 Areva Np NON-DESTRUCTIVE, CONTACTLESS CHARACTERIZATION METHOD OF A SUBSTANTIALLY SPHERIC MULTI-LAYER STRUCTURE AND ASSOCIATED DEVICE
CN102607760A (en) * 2012-03-31 2012-07-25 浙江理工大学 Direct measurement device for unsteady state force of loading and fixing particle swarm of shock wave

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3129224C1 (en) * 1981-07-24 1983-01-13 Kernforschungszentrum Karlsruhe Gmbh, 7500 Karlsruhe Differential pressure sensor

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2137347A (en) * 1983-03-31 1984-10-03 Nat Res Dev Improvements in or relating to the testing of structures by impact
US4542639A (en) * 1983-03-31 1985-09-24 National Research Development Corporation Testing of structures by impact
GB2143036A (en) * 1983-07-08 1985-01-30 Atomic Energy Authority Uk Ultrasonic resonance for detecting changes in elastic properties
FR2940444A1 (en) * 2008-12-24 2010-06-25 Areva Np NON-DESTRUCTIVE, CONTACTLESS CHARACTERIZATION METHOD OF A SUBSTANTIALLY SPHERIC MULTI-LAYER STRUCTURE AND ASSOCIATED DEVICE
WO2010072981A1 (en) * 2008-12-24 2010-07-01 Areva Np Method for the non-destructive and contactless characterisation of a substantially spherical multilayered structure, and related device
CN102607760A (en) * 2012-03-31 2012-07-25 浙江理工大学 Direct measurement device for unsteady state force of loading and fixing particle swarm of shock wave

Also Published As

Publication number Publication date
DE2436881A1 (en) 1975-03-13
LU70597A1 (en) 1974-11-28
BE817788A (en) 1974-11-18
FR2239686A1 (en) 1975-02-28
IE39628B1 (en) 1978-11-22
DE2436243A1 (en) 1975-02-13
IE39628L (en) 1975-01-30
NL7410237A (en) 1975-02-03
IT990064B (en) 1975-06-20
FR2239686B1 (en) 1976-10-22
DK398774A (en) 1975-04-07

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Legal Events

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