FR2408116A1 - METHOD OF MEASURING THE THICKNESS OF HOLLOW ROOM WALLS AND THE VOLUME OF CELLARS - Google Patents

METHOD OF MEASURING THE THICKNESS OF HOLLOW ROOM WALLS AND THE VOLUME OF CELLARS

Info

Publication number
FR2408116A1
FR2408116A1 FR7733679A FR7733679A FR2408116A1 FR 2408116 A1 FR2408116 A1 FR 2408116A1 FR 7733679 A FR7733679 A FR 7733679A FR 7733679 A FR7733679 A FR 7733679A FR 2408116 A1 FR2408116 A1 FR 2408116A1
Authority
FR
France
Prior art keywords
measuring
thickness
cellars
volume
walls
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
FR7733679A
Other languages
French (fr)
Other versions
FR2408116B1 (en
Inventor
Michel Henri Dorval
Bernard Andre Girault
Jean Fernand Vaerman
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.)
Safran Aircraft Engines SAS
Original Assignee
SNECMA SAS
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 SNECMA SAS filed Critical SNECMA SAS
Priority to FR7733679A priority Critical patent/FR2408116A1/en
Priority to GB7843026A priority patent/GB2009414B/en
Priority to DE19782847763 priority patent/DE2847763A1/en
Publication of FR2408116A1 publication Critical patent/FR2408116A1/en
Application granted granted Critical
Publication of FR2408116B1 publication Critical patent/FR2408116B1/fr
Granted 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
    • G01B7/00—Measuring arrangements characterised by the use of electric or magnetic techniques
    • G01B7/02—Measuring arrangements characterised by the use of electric or magnetic techniques for measuring length, width or thickness
    • G01B7/06—Measuring arrangements characterised by the use of electric or magnetic techniques for measuring length, width or thickness for measuring thickness
    • G01B7/10—Measuring arrangements characterised by the use of electric or magnetic techniques for measuring length, width or thickness for measuring thickness using magnetic means, e.g. by measuring change of reluctance
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01D—NON-POSITIVE DISPLACEMENT MACHINES OR ENGINES, e.g. STEAM TURBINES
    • F01D21/00—Shutting-down of machines or engines, e.g. in emergency; Regulating, controlling, or safety means not otherwise provided for
    • F01D21/003—Arrangements for testing or measuring
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01V—GEOPHYSICS; GRAVITATIONAL MEASUREMENTS; DETECTING MASSES OR OBJECTS; TAGS
    • G01V3/00—Electric or magnetic prospecting or detecting; Measuring magnetic field characteristics of the earth, e.g. declination, deviation
    • G01V3/08—Electric or magnetic prospecting or detecting; Measuring magnetic field characteristics of the earth, e.g. declination, deviation operating with magnetic or electric fields produced or modified by objects or geological structures or by detecting devices
    • G01V3/10—Electric or magnetic prospecting or detecting; Measuring magnetic field characteristics of the earth, e.g. declination, deviation operating with magnetic or electric fields produced or modified by objects or geological structures or by detecting devices using induction coils
    • G01V3/101—Electric or magnetic prospecting or detecting; Measuring magnetic field characteristics of the earth, e.g. declination, deviation operating with magnetic or electric fields produced or modified by objects or geological structures or by detecting devices using induction coils by measuring the impedance of the search coil; by measuring features of a resonant circuit comprising the search coil

Abstract

L'INVENTION CONCERNE UN PROCEDE DE MESURE DE L'EPAISSEUR DES PAROIS DE PIECES CREUSES. SELON CE PROCEDE, UNE SONDE 11 CONSTITUEE D'UN BOBINAGE ELECTRIQUE DONT L'IMPEDANCE EST MODIFIEE PAR LES CARACTERISTIQUES ELECTROMAGNETIQUES D'UN FLUIDE INTRODUIT DANS LES CAVITES 2 MENAGEES A L'INTERIEUR DE LA PIECE 1 EST DEPLACEE, A L'EXTERIEUR DE LA PIECE 1, LA VARIATION D'IMPEDANCE DE LADITE SONDE 11 ETANT MESUREE ET COMPAREE A CELLES OBTENUES AVEC DES PIECES DE REFERENCE. LE PROCEDE SELON L'INVENTION PERMET DE MESURER LES EPAISSEURS DES PAROIS DES CANAUX DE REFROIDISSEMENT MENAGES DANS LES AUBES DE TURBINES DE TURBOREACTEURS.THE INVENTION RELATES TO A PROCESS FOR MEASURING THE THICKNESS OF THE WALLS OF HOLLOW PIECES. ACCORDING TO THIS PROCEDURE, A SENSOR 11 CONSTITUTED OF AN ELECTRIC WINDING THE IMPEDANCE OF WHICH IS MODIFIED BY THE ELECTROMAGNETIC CHARACTERISTICS OF A FLUID INTRODUCED INTO THE CAVITIES 2 CONDUCTED INSIDE THE PART 1 IS MOVED OUTSIDE THE BOX. PART 1, THE IMPEDANCE VARIATION OF THE SAID PROBE 11 BEING MEASURED AND COMPARED WITH THOSE OBTAINED WITH REFERENCE PARTS. THE PROCESS ACCORDING TO THE INVENTION ALLOWS TO MEASURE THE THICKNESSES OF THE WALLS OF THE COOLING CHANNELS HOUSED IN THE BLADES OF TURBORACTOR TURBINES.

FR7733679A 1977-11-04 1977-11-04 METHOD OF MEASURING THE THICKNESS OF HOLLOW ROOM WALLS AND THE VOLUME OF CELLARS Granted FR2408116A1 (en)

Priority Applications (3)

Application Number Priority Date Filing Date Title
FR7733679A FR2408116A1 (en) 1977-11-04 1977-11-04 METHOD OF MEASURING THE THICKNESS OF HOLLOW ROOM WALLS AND THE VOLUME OF CELLARS
GB7843026A GB2009414B (en) 1977-11-04 1978-11-02 Thickness measuring device and method
DE19782847763 DE2847763A1 (en) 1977-11-04 1978-11-03 METHOD OF MEASURING THE WALL THICKNESS OF GAS TURBINE BLADES

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR7733679A FR2408116A1 (en) 1977-11-04 1977-11-04 METHOD OF MEASURING THE THICKNESS OF HOLLOW ROOM WALLS AND THE VOLUME OF CELLARS

Publications (2)

Publication Number Publication Date
FR2408116A1 true FR2408116A1 (en) 1979-06-01
FR2408116B1 FR2408116B1 (en) 1980-04-25

Family

ID=9197420

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7733679A Granted FR2408116A1 (en) 1977-11-04 1977-11-04 METHOD OF MEASURING THE THICKNESS OF HOLLOW ROOM WALLS AND THE VOLUME OF CELLARS

Country Status (3)

Country Link
DE (1) DE2847763A1 (en)
FR (1) FR2408116A1 (en)
GB (1) GB2009414B (en)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6012265A (en) * 1983-07-01 1985-01-22 Nippon Kokan Kk <Nkk> Method for measuring thickness of solidified layer
CN112361929B (en) * 2020-10-30 2022-04-08 海南方能测试技术有限公司 Building major structure protective layer thickness verifying attachment

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB547714A (en) * 1941-05-12 1942-09-08 Alan Marsh Armour Improvements in or relating to the detection of variation in wall thickness of tubes of magnetic material
DE1009400B (en) * 1956-04-04 1957-05-29 Karl Deutsch Arrangement and probe for measuring the thickness of non-ferromagnetic layers on a ferromagnetic base
NL6403501A (en) * 1964-04-02 1965-10-04

Also Published As

Publication number Publication date
DE2847763A1 (en) 1979-05-10
DE2847763C2 (en) 1987-01-22
GB2009414B (en) 1982-03-10
FR2408116B1 (en) 1980-04-25
GB2009414A (en) 1979-06-13

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Legal Events

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ST Notification of lapse