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Title: Dual-energy Computer Tomography and Digital Radiography Applications in Non-destructive Control of Materials

Abstract

A multi-purpose home-made dual energy computer have been used to investigate a great diversity of object of scientific interest such as polymers containing variable proportion of fluor and sulfur, fragments of wood, sedimentary cores, as well as various rocks. By using a dedicated version of filtered back-projection algorithm as well as a set of standard samples it was possible to determine both density and effective atomic number distribution over any section (planar or volumic) of investigated objects. In all cases, the maximum precision in determining the local density was about 3.5 % while effective atomic numbers were calculated with an accuracy of 2%. At the same time, the spatial resolution of reconstructed tomographies was about 0.5 mm, while the analyses of images histograms allowed a better quantitative characterization of their internal composition.

Authors:
 [1]; ;  [2];  [3]
  1. University of Bucharest, Department of Atomic and Nuclear Physics, P.O. Box MG-11, 077125 Bucharest (Romania)
  2. Accent Pro 2000, Ltd, 1, Nerva Traian Str., K6, 031041, Bucharest (Romania)
  3. The Politehnica University, Bucharest, 313, Splaiul Independentei, 060032, Bucharest (Romania)
Publication Date:
OSTI Identifier:
21057177
Resource Type:
Journal Article
Resource Relation:
Journal Name: AIP Conference Proceedings; Journal Volume: 899; Journal Issue: 1; Conference: 6. international conference of the Balkan Physical Union, Istanbul (Turkey), 22-26 Aug 2006; Other Information: DOI: 10.1063/1.2733224; (c) 2007 American Institute of Physics; Country of input: International Atomic Energy Agency (IAEA)
Country of Publication:
United States
Language:
English
Subject:
46 INSTRUMENTATION RELATED TO NUCLEAR SCIENCE AND TECHNOLOGY; ACCURACY; ALGORITHMS; COMPUTERIZED TOMOGRAPHY; DENSITY; DISTRIBUTION; IMAGES; NONDESTRUCTIVE TESTING; POLYMERS; ROCKS; SPATIAL RESOLUTION; SULFUR; WOOD

Citation Formats

Duliu, O. G., Iovea, M., Neagu, M., and Mateiasi, G. Dual-energy Computer Tomography and Digital Radiography Applications in Non-destructive Control of Materials. United States: N. p., 2007. Web. doi:10.1063/1.2733224.
Duliu, O. G., Iovea, M., Neagu, M., & Mateiasi, G. Dual-energy Computer Tomography and Digital Radiography Applications in Non-destructive Control of Materials. United States. doi:10.1063/1.2733224.
Duliu, O. G., Iovea, M., Neagu, M., and Mateiasi, G. Mon . "Dual-energy Computer Tomography and Digital Radiography Applications in Non-destructive Control of Materials". United States. doi:10.1063/1.2733224.
@article{osti_21057177,
title = {Dual-energy Computer Tomography and Digital Radiography Applications in Non-destructive Control of Materials},
author = {Duliu, O. G. and Iovea, M. and Neagu, M. and Mateiasi, G.},
abstractNote = {A multi-purpose home-made dual energy computer have been used to investigate a great diversity of object of scientific interest such as polymers containing variable proportion of fluor and sulfur, fragments of wood, sedimentary cores, as well as various rocks. By using a dedicated version of filtered back-projection algorithm as well as a set of standard samples it was possible to determine both density and effective atomic number distribution over any section (planar or volumic) of investigated objects. In all cases, the maximum precision in determining the local density was about 3.5 % while effective atomic numbers were calculated with an accuracy of 2%. At the same time, the spatial resolution of reconstructed tomographies was about 0.5 mm, while the analyses of images histograms allowed a better quantitative characterization of their internal composition.},
doi = {10.1063/1.2733224},
journal = {AIP Conference Proceedings},
number = 1,
volume = 899,
place = {United States},
year = {Mon Apr 23 00:00:00 EDT 2007},
month = {Mon Apr 23 00:00:00 EDT 2007}
}