SE8105766L - BOXES - Google Patents

BOXES

Info

Publication number
SE8105766L
SE8105766L SE8105766A SE8105766A SE8105766L SE 8105766 L SE8105766 L SE 8105766L SE 8105766 A SE8105766 A SE 8105766A SE 8105766 A SE8105766 A SE 8105766A SE 8105766 L SE8105766 L SE 8105766L
Authority
SE
Sweden
Prior art keywords
beams
tube
measuring points
beam path
tube wall
Prior art date
Application number
SE8105766A
Other languages
Unknown language ( )
Swedish (sv)
Inventor
C J Griffin
Original Assignee
Metal Box Co Ltd
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 Metal Box Co Ltd filed Critical Metal Box Co Ltd
Publication of SE8105766L publication Critical patent/SE8105766L/en

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
    • G01B15/02—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 thickness
    • G01B15/025—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 thickness by measuring absorption

Landscapes

  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • General Physics & Mathematics (AREA)
  • Length-Measuring Devices Using Wave Or Particle Radiation (AREA)

Abstract

Sources 1A, 1B, 1C direct at least three beams 3A, 3B, 3C of radiation of known intensity through the tube 20 so as to intersect at measuring points A, B, C within the tube wall. Detectors 4A, 4B, 4C receive the emergent beams and measure their intensities. The attenuation of the beams is used to determine the tube wall thickness x1, x2, x3 at the measuring points A, B, C. The determination may make use of the method of least squares and may be effected by means of a computer. Measuring points common to a beam path may be spaced axially of the tube. An additional measuring point may be on only one beam path which passes through another measuring point at which beam paths intersect. <IMAGE>
SE8105766A 1980-10-10 1981-09-30 BOXES SE8105766L (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB8032882A GB2085577B (en) 1980-10-10 1980-10-10 A method and apparatus for measuring tube wall thickness

Publications (1)

Publication Number Publication Date
SE8105766L true SE8105766L (en) 1982-04-11

Family

ID=10516610

Family Applications (1)

Application Number Title Priority Date Filing Date
SE8105766A SE8105766L (en) 1980-10-10 1981-09-30 BOXES

Country Status (2)

Country Link
GB (1) GB2085577B (en)
SE (1) SE8105766L (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2008039056A1 (en) 2006-09-25 2008-04-03 Röntgen Technische Dienst Arrangement and method for non destructive measurement of wall thickness and surface shapes of objects with inner surface

Also Published As

Publication number Publication date
GB2085577B (en) 1984-09-26
GB2085577A (en) 1982-04-28

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Legal Events

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Effective date: 19880811