Published April 15, 2015 | Version v1
Journal article Metadata-only

Non-destructive evaluation of weld discontinuity in steel tubes by gamma ray CT

Creators

  • 1. Department of Nuclear Energy, Federal University of Pernambuco – UFPE, Recife, PE (Brazil)
  • 2. Department of Mechanical Engineering– UFPE, Recife, PE (Brazil)
  • 3. Department of Mathematics, University of Pernambuco – UPE, Recife, PE (Brazil)
  • 4. Informatics Center CIN – UFPE, Recife, PE (Brazil)
  • 5. Catholic University of Pernambuco – UNICAP, Recife, PE (Brazil)

Description

Weld discontinuity in steel tubes was investigated and dimensioned in a data analysis sequence. The correlation matrix, cosine distance and hierarchical cluster were applied as multivariate data processing in this analysis. Welded rings of 9236 mm3 were scanned in gamma ray CT in test tubes and compared with steel base and references. The discontinuity volume detected in the welded rings was assessed based on the pixel volume in data sampling. By modeling gamma ray trajectories and rotation angles in CT scanning, a discontinuity of 0.3 mm was determined and a limit detection of 23 mm3 was obtained

Availability note (English)

Available from http://dx.doi.org/10.1016/j.nimb.2015.02.024

Additional details

Identifiers

DOI
10.1016/j.nimb.2015.02.024;
PII
S0168-583X(15)00141-X;

Publishing Information

Journal Title
Nuclear Instruments and Methods in Physics Research. Section B, Beam Interactions with Materials and Atoms
Journal Volume
349
Journal Page Range
p. 155-162
ISSN
0168-583X
CODEN
NIMBEU

INIS

Country of Publication
Netherlands
Country of Input or Organization
International Atomic Energy Agency (IAEA)
INIS RN
47037354
Subject category
S46: INSTRUMENTATION RELATED TO NUCLEAR SCIENCE AND TECHNOLOGY;
Descriptors DEI
CAT SCANNING; CORRELATIONS; DATA ANALYSIS; DETECTION; GAMMA RADIATION; MULTIVARIATE ANALYSIS; RINGS; STEELS; TUBES; WELDED JOINTS
Descriptors DEC
ALLOYS; CARBON ADDITIONS; COMPUTERIZED TOMOGRAPHY; DATA PROCESSING; DIAGNOSTIC TECHNIQUES; ELECTROMAGNETIC RADIATION; IONIZING RADIATIONS; IRON ALLOYS; IRON BASE ALLOYS; JOINTS; MATHEMATICS; PROCESSING; RADIATIONS; STATISTICS; TOMOGRAPHY; TRANSITION ELEMENT ALLOYS

Optional Information

Copyright
Copyright (c) 2015 Elsevier Science B.V., Amsterdam, The Netherlands, All rights reserved.