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Akademický článek

SOLAR ABSORBER WITH A STRUCTURED SURFACE – A WAY TO INCREASE EFFICIENCY

Autor: Libor Mrňa, Jan Řiháček, Martin Šarbort, Petr Horník

Publikováno v: Acta Polytechnica, Vol 59, Iss 2, Pp 134-143 (2019)

The basic idea of a solar absorber’s thermal gain increase is the keyhole effect utilization during which the radiation is absorbed by multiple reflections on cavity walls. The lattice of pyramidal or conical cavities on the solar absorber surface

Externí odkaz: https://doaj.org/article/84b153c4631b4def8b9bc5e9203d534a

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MANUFACTURING OF SANDWICH PANELS AND ITS VERIFICATION BY NUMERICAL SIMULATION

Autor: Libor Mrna, Jan Rihacek, Martin Harant

Publikováno v: MM Science Journal. 2021:4797-4802

This paper deals with the manufacturing of a parallel hydroformed sandwich panel, which is used as a reinforcement for solar panels. The forming process can cause excessive thinning and cracking. Therefore, PAM-STAMP software is used for the analysis

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::a0b9a9d0aa6b0620ff51287a5ed99921
https://doi.org/10.17973/mmsj.2021_10_2021087

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NUMERICAL ANALYSIS AND OPTIMIZATION OF THE HOOK FORGING PROCESS

Autor: Eva Peterkova, Jan Rihacek, Jan Bartak, Kamil Podany, Michaela Cisarova

Publikováno v: MM Science Journal. 2021:4356-4361

The paper is focused on analysis and optimization of the jaw turnout lock hook forging process, which is used in rail transport. It is forged from 37MnSi5 steel in Kralovopolska LLC. Currently, a fold occasionally occur in the inner side of curved pa

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::6ec7b31be92401b8b5afe044a3203c3e
https://doi.org/10.17973/mmsj.2021_6_2021010

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INFLUENCE OF THE PRESSURE DIE GEOMETRY ON THE BENT TUBE OVALITY

Autor: Kamil Podany, Michaela Cisarova, Jan Rihacek, Eva Peterkova

Publikováno v: MM Science Journal. 2021:4474-4482

The paper deal with analysis and optimization of the pressure bar geometry in the case of the tube bending. The bending process is realized on Wafios RBV 60 ST CNC bending machine using rotary draw bending system. The processed semi-finished product

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::bb84c1bc9df23434430cde6d7075082e
https://doi.org/10.17973/mmsj.2021_6_2021082

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