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Evaluation of properties of cast metal foams with irregular inner structure
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SYSNO ASEP 0506926 Document Type J - Journal Article R&D Document Type Journal Article Subsidiary J Článek ve WOS Title Evaluation of properties of cast metal foams with irregular inner structure Author(s) Kroupová, I. (CZ)
Lichý, P. (CZ)
Hendrych, J. (CZ)
Souček, Kamil (UGN-S) RID, ORCIDNumber of authors 6 Source Title Archives of Metallurgy and Materials. - : Akademia Gorniczo-Hutnicza im. Stanislawa Staszica - ISSN 1733-3490
Roč. 63, č. 4 (2018), s. 1847-1851Number of pages 5 s. Publication form Online - E Language eng - English Country PL - Poland Keywords metal foams ; irregular structure ; precursor ; porosity ; micro-CT Subject RIV JG - Metallurgy OECD category Materials engineering Method of publishing Open access Institutional support UGN-S - RVO:68145535 UT WOS 000453260800036 EID SCOPUS 85061292730 DOI 10.24425/amm.2018.125114 Annotation Internal structure of metal foams is one of the most important factors that determine its mechanical properties. There exists a number of methods for studying the nature of the inner porous structure. Unfortunately most of these processes is destructive and therefore it is not possible to reuse the sample. From this point of view, as a suitable method seems to be the ability of using the so-called X-ray microtomography (also micro-CT). This is a non-destructive methodology used in a number of fields (industry, science, archaeology, medicine) for a description of the material distribution in the space (e.g. pores, fillers, defects, etc.). In principle, this technology works on different absorption of X-ray radiation by materials with changing proton number. The contribution was worked out in collaboration with experts from the Faculty of Electrical Engineering and Computer Science of the VSB-Technical University of Ostrava and it is focused on the analysis of internal structure of the metal foam casting with irregular arrangement of internal pores by using micro-CT. The obtained data were evaluated in the commercial software VGStudio MAX 2.2 and in the FOTOMNG system. For the evaluation of these data a new specialized module was introduced in this system. Several methods of pre-processing the image was prepared for the measurement. This preliminary processing consists, for example, from a binary image thresholding for better diversity between the internal porosity and the material itself or functions for colour inversion. Workplace Institute of Geonics Contact Lucie Gurková, lucie.gurkova@ugn.cas.cz, Tel.: 596 979 354 Year of Publishing 2020 Electronic address http://journals.pan.pl/dlibra/publication/125114/edition/109155/content
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