GB1418960A - Method of measuring - Google Patents

Method of measuring

Info

Publication number
GB1418960A
GB1418960A GB2314773A GB2314773A GB1418960A GB 1418960 A GB1418960 A GB 1418960A GB 2314773 A GB2314773 A GB 2314773A GB 2314773 A GB2314773 A GB 2314773A GB 1418960 A GB1418960 A GB 1418960A
Authority
GB
United Kingdom
Prior art keywords
cavity
sample
modes
measured
length
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
GB2314773A
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 GB1418960A publication Critical patent/GB1418960A/en
Expired legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
    • G01B15/00—Measuring arrangements characterised by the use of electromagnetic waves or particle radiation, e.g. by the use of microwaves, X-rays, gamma rays or electrons
    • G01B15/06—Measuring arrangements characterised by the use of electromagnetic waves or particle radiation, e.g. by the use of microwaves, X-rays, gamma rays or electrons for measuring the deformation in a solid
    • 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)
  • Electromagnetism (AREA)
  • General Physics & Mathematics (AREA)
  • Investigating Or Analyzing Materials Using Thermal Means (AREA)
  • Measurement Of Length, Angles, Or The Like Using Electric Or Magnetic Means (AREA)
  • Control Of Motors That Do Not Use Commutators (AREA)
  • Measurement Of Mechanical Vibrations Or Ultrasonic Waves (AREA)

Abstract

1418960 Measuring temperature and length electrically COMMISSARIAT A L'ENERGIE ATOMIQUE 15 May 1973 [16 May 1972] 23147/73 Addition to 1173438 Heading G1N A method for measuring variations of the length of a sample 6 of which the thermal expansion is to be measured includes the steps of: providing a resonant cavity 2, and supplying it with electric power at micro-wave frequency, an end of the sample being fixed to a movable top wall 8 of the cavity which is displaced relative to the other walls of the cavity by expansion of the sample; measuring the frequencies of a plurality of modes of resonance of the cavity, the number of modes corresponding to the number of dimensions defining the cavity e.g. for a right circular cylindrical cavity two modes are required, for a rectangular parallelopiped three modes are required, the frequencies being measured at each of a plurality of temperatures, computing the dimensions of the cavity from the measured frequencies at each temperature and determining length variations of the sample from the computed dimensions. The different temperatures are measured by thermocouples. Alternatively if the coefficient of expansion of the sample is known the change in its length may be computed from which the difference in temperature may be calculated.
GB2314773A 1972-05-16 1973-05-15 Method of measuring Expired GB1418960A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR7217499A FR2185095A6 (en) 1972-05-16 1972-05-16

Publications (1)

Publication Number Publication Date
GB1418960A true GB1418960A (en) 1975-12-24

Family

ID=9098597

Family Applications (1)

Application Number Title Priority Date Filing Date
GB2314773A Expired GB1418960A (en) 1972-05-16 1973-05-15 Method of measuring

Country Status (5)

Country Link
JP (1) JPS4967645A (en)
BE (1) BE799325R (en)
DE (1) DE2324735A1 (en)
FR (1) FR2185095A6 (en)
GB (1) GB1418960A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2142730A (en) * 1980-03-28 1985-01-23 Rockwell International Corp Measurement of chamber volume
CN112485596A (en) * 2020-11-30 2021-03-12 云南电网有限责任公司电力科学研究院 Power distribution network ground fault detection device and method

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2714094C3 (en) * 1977-03-30 1980-04-17 Bayer Ag, 5090 Leverkusen Device for determining the water content of isotropic materials with the aid of microwave absorption
ATE93958T1 (en) * 1989-01-16 1993-09-15 Armin W Hrdlicka METHOD OF LENGTH MEASUREMENT AND DEVICE FOR CARRYING OUT THE METHOD.
AT393738B (en) * 1989-01-16 1991-12-10 Hrdlicka Armin W Ing Length-measuring method
US5184512A (en) * 1989-01-16 1993-02-09 Hrdlicka Armin W Measuring the length of a column of fluid in a tube
DE102004043760A1 (en) * 2004-01-15 2005-08-11 Daimlerchrysler Ag Measurement of geometric characteristics of a hollow space, e.g. an air-filled high frequency resonator, by coupling a waveguide for high frequency electromagnetic waves to the conducting surface of the hollow space
RU2682565C1 (en) * 2017-12-26 2019-03-19 федеральное государственное автономное образовательное учреждение высшего образования "Южный федеральный университет" (Южный федеральный университет) Method of measuring the length of an electrical wire object

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2142730A (en) * 1980-03-28 1985-01-23 Rockwell International Corp Measurement of chamber volume
CN112485596A (en) * 2020-11-30 2021-03-12 云南电网有限责任公司电力科学研究院 Power distribution network ground fault detection device and method
CN112485596B (en) * 2020-11-30 2022-06-07 云南电网有限责任公司电力科学研究院 Power distribution network ground fault detection device and method

Also Published As

Publication number Publication date
JPS4967645A (en) 1974-07-01
FR2185095A6 (en) 1973-12-28
DE2324735A1 (en) 1973-11-29
BE799325R (en) 1973-08-31

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Legal Events

Date Code Title Description
PS Patent sealed
435 Patent endorsed 'licences of right' on the date specified (sect. 35/1949)
PLNP Patent lapsed through nonpayment of renewal fees