Browsing by Subject "X-ray tomography"

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Access status: Open Access ,
Analysis of bridge ligaments in 3D volumetric images using discrete topology
(Wydawnictwa AGH, 2009) Babout, Laurent; Janaszewski, Marcin Sławomir
The paper presents a new algorithm that aims to fragment volumetric features that are connected via thin junctions such as isthmus. The method is based on the calculation of local topological numbers and decision making about the volume of the features following junction deletion. The algorithm is applied on a real 3D dataset from X-ray tomography imaging which represents crack and bridge ligaments in stainless steel during intergranular stress corrosion cracking. Bridge ligaments, which can be identified as holes in a 3D object - the crack - are segmented using so-called hole closing algorithm.
Access status: Open Access ,
Ilościowa analiza porowatości materiału sypkiego z zastosowaniem systemu tomografii promieniowania X
(Wydawnictwa AGH, 2009) Grudzień, Krzysztof; Adrien, Jerome; Babout, Laurent; Romanowski, Andrzej; Chaniecki, Zbigniew
Paper presents feasibility study of X Ray tomography system application to porosity measurement of dense packed bulk solid in rectangular silo model. Obtained preliminary experimental results reveal the measurement capabilities of the tested system. Results presented are for static measurement of silo sand filling. There is a comparison between two different silo regions, with different packing density values of sand, and qualitative analysis of results is performed. Theoretical description of distinct parameters of X Ray tomography system parts influence on quality of obtained results is presented. Additionally, the discussion on procedure of preparation and adjustment of measurement system parameters in order to achieve best data for quantitative analysis of tomography images is cover in this paper.