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Non destructive testing of industrial pieces by radiography: quantitative characterization and 3 D reconstruction by the way of a limited number of images; Controle non destructif de pieces industrielles par radiographie: caracterisation quantitative et reconstruction 3D a partir d`un nombre limite de vues

Abstract

The non destructive testing of industrial pieces is evaluated on the basis of numerical radiographies.The context of the study is the online control of the fuel rods production. A direct model of a numerical radiography formation is proposed and detailed for an acquisition system consisting of a CCD video connected to a converter screen by an optical system. As this approach does not allow the determination of the measured matter thickness from the X-ray photograph, an approximate model based on realistic approximations of the industrial non destructive testing, has been developed. For the specific cases it is possible to inverse the model and to reach the quantitative information present in the x-ray photograph, in other words, the map of the X-rays measured matter thickness. It becomes then possible to access to the quantitative parameters of the possible defects present in the measured specimen, such as the surface and the bulk. To reach the 3 D information on the defects a 3 D reconstruction method, from 3 X-rays photographs, is proposed.The inverse problem is solved by the non convex energy minimization. (A.L.B.) 109 refs.
Authors:
Publication Date:
Dec 31, 1998
Product Type:
Technical Report
Report Number:
CEA-DTA-LETI-SCSI-DSYS-98653-JMD
Reference Number:
SCA: 440101; 990200; 220400; PA: AIX-30:044349; SN: 99002152876
Resource Relation:
Other Information: DN: 109 refs.; PBD: 1998
Subject:
44 INSTRUMENTATION, INCLUDING NUCLEAR AND PARTICLE DETECTORS; 99 MATHEMATICS, COMPUTERS, INFORMATION SCIENCE, MANAGEMENT, LAW, MISCELLANEOUS; 22 NUCLEAR REACTOR TECHNOLOGY; COMPTON EFFECT; COMPUTERIZED SIMULATION; COMPUTERIZED TOMOGRAPHY; FUEL RODS; INDUSTRIAL RADIOGRAPHY; INVERSE SCATTERING PROBLEM; MARKOV PROCESS; MEASURING METHODS; NUMERICAL ANALYSIS; SPECTRAL HARDENING; THREE-DIMENSIONAL CALCULATIONS; X-RAY RADIOGRAPHY
OSTI ID:
701418
Research Organizations:
CEA Grenoble, 38 (France). Lab. d`Electronique de Technologie et d`Instrumentation
Country of Origin:
France
Language:
French
Other Identifying Numbers:
Other: ON: DE99635205; TRN: FR9904767044349
Availability:
INIS; OSTI as DE99635205
Submitting Site:
FRN
Size:
136 p.
Announcement Date:

Citation Formats

Retraint, F. Non destructive testing of industrial pieces by radiography: quantitative characterization and 3 D reconstruction by the way of a limited number of images; Controle non destructif de pieces industrielles par radiographie: caracterisation quantitative et reconstruction 3D a partir d`un nombre limite de vues. France: N. p., 1998. Web.
Retraint, F. Non destructive testing of industrial pieces by radiography: quantitative characterization and 3 D reconstruction by the way of a limited number of images; Controle non destructif de pieces industrielles par radiographie: caracterisation quantitative et reconstruction 3D a partir d`un nombre limite de vues. France.
Retraint, F. 1998. "Non destructive testing of industrial pieces by radiography: quantitative characterization and 3 D reconstruction by the way of a limited number of images; Controle non destructif de pieces industrielles par radiographie: caracterisation quantitative et reconstruction 3D a partir d`un nombre limite de vues." France.
@misc{etde_701418,
title = {Non destructive testing of industrial pieces by radiography: quantitative characterization and 3 D reconstruction by the way of a limited number of images; Controle non destructif de pieces industrielles par radiographie: caracterisation quantitative et reconstruction 3D a partir d`un nombre limite de vues}
author = {Retraint, F}
abstractNote = {The non destructive testing of industrial pieces is evaluated on the basis of numerical radiographies.The context of the study is the online control of the fuel rods production. A direct model of a numerical radiography formation is proposed and detailed for an acquisition system consisting of a CCD video connected to a converter screen by an optical system. As this approach does not allow the determination of the measured matter thickness from the X-ray photograph, an approximate model based on realistic approximations of the industrial non destructive testing, has been developed. For the specific cases it is possible to inverse the model and to reach the quantitative information present in the x-ray photograph, in other words, the map of the X-rays measured matter thickness. It becomes then possible to access to the quantitative parameters of the possible defects present in the measured specimen, such as the surface and the bulk. To reach the 3 D information on the defects a 3 D reconstruction method, from 3 X-rays photographs, is proposed.The inverse problem is solved by the non convex energy minimization. (A.L.B.) 109 refs.}
place = {France}
year = {1998}
month = {Dec}
}