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Computerized tomography used in non-destructive testing of welded pipes

Miscellaneous:

Abstract

High quality standards in operation of National Power System is ensured by the use of high performance techniques and systems for Non-Destructive Testing (NDT). In recent years a number of new developments of the non-conventional technologies in the field of NDT have been achieved. In our laboratory there have been developed two computerized technologies using {gamma}-ray computed tomography and ultrasonic imaging methods. The standard techniques for imaging from projection data is computerized tomography. The industrial computerized tomography methods consist in the measurement of thin X - or {gamma}-ray beam attenuation when passing through some selected surface of the tested object, along several directions, so that by means of an adequate mathematical algorithm, a map of linear attenuation coefficients for the scanned surface is obtained. In fact, this map gives the density of materials occurring in the surface plane. Computerized tomography equipment, in various constructive versions, are intended for the following applications: (1) NDT in those fields requiring strict control of product quality, as for instance the nuclear energy, military industry, aeronautics, transportation fields, etc., (2) research in field of materials technology, machine engineering, metallurgy, welding, etc. This paper presents the applications of Computerized Tomography in NDT, by showing the results  More>>
Authors:
Iovea, M; Rizescu, C; Georgescu, G; Marinescu, A; Chitescu, P; Sava, T; Neagu, M; Avram, D [1] 
  1. Institute of Research and Design for Electrical Engineering, ICPE - Electrostatica Splaiul Unirii 313, Sect. 3, R-74204 Bucharest (Romania)
Publication Date:
Dec 31, 1996
Product Type:
Miscellaneous
Report Number:
CONF-9609339-
Reference Number:
SCA: 070204; PA: AIX-28:037187; EDB-97:077900; SN: 97001795858
Resource Relation:
Conference: National energy conference: improving energy efficiency in a transition economy (CNE `96), Neptun (Romania), 1-5 Sep 1996; Other Information: DN: Conference proceedings published in 8 sections.; PBD: 1996; Related Information: Is Part Of CNE`96: National Energy Conference `Improving Energy Efficiency in a Transition Economy`. Proceedings of Section III: Rehabilitation / Retro-fitting of power facilities; Petrescu, M.; Balan, Gh.; Zlatanovici, D. [Centrul de Cercetari Energetice, RENEL - Str. Energeticienilor Nr.8, Sector 3, R-79619 Bucharest (Romania)]; PB: 343 p.
Subject:
07 ISOTOPE AND RADIATION SOURCE TECHNOLOGY; NONDESTRUCTIVE TESTING; COMPUTERIZED TOMOGRAPHY; PIPES; WELDING; ABSORPTION; DENSITY; GAMMA RADIOGRAPHY; INDUSTRIAL RADIOGRAPHY; QUALITY CONTROL; STEELS; X-RAY RADIOGRAPHY
OSTI ID:
479925
Country of Origin:
Romania
Language:
English
Other Identifying Numbers:
TRN: RO9700104037187
Availability:
Available from authors by request
Submitting Site:
INIS
Size:
pp. 201-205
Announcement Date:
Jan 22, 2004

Miscellaneous:

Citation Formats

Iovea, M, Rizescu, C, Georgescu, G, Marinescu, A, Chitescu, P, Sava, T, Neagu, M, and Avram, D. Computerized tomography used in non-destructive testing of welded pipes. Romania: N. p., 1996. Web.
Iovea, M, Rizescu, C, Georgescu, G, Marinescu, A, Chitescu, P, Sava, T, Neagu, M, & Avram, D. Computerized tomography used in non-destructive testing of welded pipes. Romania.
Iovea, M, Rizescu, C, Georgescu, G, Marinescu, A, Chitescu, P, Sava, T, Neagu, M, and Avram, D. 1996. "Computerized tomography used in non-destructive testing of welded pipes." Romania.
@misc{etde_479925,
title = {Computerized tomography used in non-destructive testing of welded pipes}
author = {Iovea, M, Rizescu, C, Georgescu, G, Marinescu, A, Chitescu, P, Sava, T, Neagu, M, and Avram, D}
abstractNote = {High quality standards in operation of National Power System is ensured by the use of high performance techniques and systems for Non-Destructive Testing (NDT). In recent years a number of new developments of the non-conventional technologies in the field of NDT have been achieved. In our laboratory there have been developed two computerized technologies using {gamma}-ray computed tomography and ultrasonic imaging methods. The standard techniques for imaging from projection data is computerized tomography. The industrial computerized tomography methods consist in the measurement of thin X - or {gamma}-ray beam attenuation when passing through some selected surface of the tested object, along several directions, so that by means of an adequate mathematical algorithm, a map of linear attenuation coefficients for the scanned surface is obtained. In fact, this map gives the density of materials occurring in the surface plane. Computerized tomography equipment, in various constructive versions, are intended for the following applications: (1) NDT in those fields requiring strict control of product quality, as for instance the nuclear energy, military industry, aeronautics, transportation fields, etc., (2) research in field of materials technology, machine engineering, metallurgy, welding, etc. This paper presents the applications of Computerized Tomography in NDT, by showing the results obtained on welded pipes, as well as the facilities offered by this method. In the final part, the paper presents the concept of a mobile tomography system for industrial pipes testing. (author). 2 figs., 7 refs.}
place = {Romania}
year = {1996}
month = {Dec}
}