Analysis of Materials and Structures in Scientific Applications Using Micro Focus Computed Tomography

2014 ◽  
Vol 613 ◽  
pp. 239-243 ◽  
Author(s):  
Ghaleb Natour ◽  
Fred Pauly

With an efficient system for 3D-mikrofocus-computed-tomography, the analysis of materials, welding’s, joining’s and structures, with high resolution is possible. In the research center Jülich such a tomographic system is available and has been developed continuously for a wide range of applications. The field of work of the X-ray system and the applications ranges from the analysis of organic materials up to solid metal components like welding’s and joining technologies. The image acquisition is carried out by novel flat panel detectors. The performance of the 3D visualization is demonstrated using examples from various scientific areas and applications. The system makes it feasible to extend automatic defective recognition (ADR) also on a real-time basis. By the special construction and the choice of its components, in combination with individually developed software tools, different application spectra are possible, e.g. for rapid prototyping or reverse engineering as well as FEM analysis in real components.

2010 ◽  
pp. 497-509
Author(s):  
Carl Lacasce ◽  
Larry Partain ◽  
Chuck Blouir

2017 ◽  
Vol 2017 ◽  
pp. 1-6 ◽  
Author(s):  
Gongyi Yu ◽  
Yi Du ◽  
Xincheng Xiang ◽  
Yuan Liu ◽  
Ziqiang Li ◽  
...  

A nonuniform distribution of tristructural isotropic (TRISO) particles within a high-temperature gas-cooled reactor (HTGR) pebble may lead to excessive thermal gradients and nonuniform thermal expansion during operation. If the particles are closely clustered, local hotspots may form, leading to excessive stresses on particle layers and an increased probability of particle failure. Although X-ray digital radiography (DR) is currently used to evaluate the TRISO distributions in pebbles, X-ray DR projection images are two-dimensional in nature, which would potentially miss some details for 3D evaluation. This paper proposes a method of 3D visualization and evaluation of the TRISO distribution in HTGR pebbles using cone-beam computed tomography (CBCT): first, a pebble is scanned on our high-resolution CBCT, and 2D cross-sectional images are reconstructed; secondly, all cross-sectional images are restructured to form the 3D model of the pebble; then, volume rendering is applied to segment and display the TRISO particles in 3D for visualization and distribution evaluation. For method validation, several pebbles were scanned and the 3D distributions of the TRISO particles within the pebbles were produced. Experiment results show that the proposed method provides more 3D than DR, which will facilitate pebble fabrication research and production quality control.


Author(s):  
Chumin Zhao ◽  
Stephen Z. Liu ◽  
Wenying Wang ◽  
Magdalena Herbst ◽  
Thomas Weber ◽  
...  

NDT World ◽  
2021 ◽  
pp. 14-16
Author(s):  
Oliver Ruzek ◽  
Uli Pöhler ◽  
Kirill Bagaev

DÜRR NDT provides ultra-high resolution computed radiography (CR) scanners, flat panel detectors, innovative software solutions and X-ray film processors for mobile use plus DÜRR NDT’s unique ‘green’ X-ray chemistry.


2009 ◽  
Vol 24 (2) ◽  
pp. 167-167
Author(s):  
J. Gelb ◽  
A. Tkachuk ◽  
M. Feser ◽  
H. Chang ◽  
S. Chen ◽  
...  

2009 ◽  
Vol 15 (S2) ◽  
pp. 618-619 ◽  
Author(s):  
J Gelb ◽  
M Feser ◽  
A Tkachuk ◽  
G Hsu ◽  
S Chen ◽  
...  

Extended abstract of a paper presented at Microscopy and Microanalysis 2009 in Richmond, Virginia, USA, July 26 – July 30, 2009


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