Zobrazeno 1 - 10
of 35
pro vyhledávání: '"Leon Kukiełka"'
Autor:
Bogusława Berner, Jerzy Chojnacki, Jiří Dvořák, Aleksandra Pachuta, Jan Najser, Leon Kukiełka, Jan Kielar, Tomáš Najser, Marcel Mikeska
Publikováno v:
Agronomy, Vol 14, Iss 9, p 1894 (2024)
On a mounted laboratory stand, comparative tests were carried out on the effectiveness of spraying wheat plants with liquid using a multi-rotor drone. The study was undertaken with and without propeller rotations. The lack of rotations simulated spra
Externí odkaz:
https://doaj.org/article/10bc6911e51d4c19b19b88db8c1ac2de
Autor:
Jarosław Chodór, Leon Kukiełka, Grzegorz Chomka, Łukasz Bohdal, Radosław Patyk, Marek Kowalik, Tomasz Trzepieciński, Andrii M. Radchenko
Publikováno v:
Applied Sciences, Vol 13, Iss 3, p 1963 (2023)
This article concerns the application of the FEM method for the prediction of stress and deformation states in the workpiece during diamond sliding burnishing (DSB). An updated Lagrange (UL) description was used to describe the phenomena at a typical
Externí odkaz:
https://doaj.org/article/97c63e559ba04d7d83d0c0d35ff057b6
Publikováno v:
Materials, Vol 16, Iss 2, p 647 (2023)
The paper concerns the application a high-pressure abrasive waterjet (AWJ) for cutting the most commonly used rock materials such as granite, limestone, basalt and marble. Based on the analysis of the literature, the influence of parameters on the sp
Externí odkaz:
https://doaj.org/article/8beb17f2d97e4f5cbe4603eb37311f14
Publikováno v:
Materials, Vol 15, Iss 23, p 8436 (2022)
The objective of this work is to present the numerical simulation of the air-bending process of DC01 steel. There are plenty of works concerned with assessing the springback phenomenon in the bending process also using anisotropic material models (Hi
Externí odkaz:
https://doaj.org/article/fa9cec7259634bf8a1f4b98b2d82abcd
Autor:
Jerzy Chojnacki, Jan Kielar, Waldemar Kuczyński, Tomáš Najser, Leon Kukiełka, Jaroslav Frantík, Bogusława Berner, Václav Peer, Bernard Knutel, Błażej Gaze
Publikováno v:
Materials, Vol 15, Iss 21, p 7740 (2022)
A comparative study was carried out of emissions from the catalytic combustion of pellets made from furniture board waste and pellets made from wood mixed with Fe2O3. The mass content of the Fe2O3 catalyst in the fuel was varied from 0% to 5%, 10%, a
Externí odkaz:
https://doaj.org/article/e29afeccebfb47f7b1e8a48940857d50
Publikováno v:
Materials, Vol 15, Iss 3, p 1168 (2022)
The paper presents the results of investigations into the possibility of using ahigh-pressure water-ice jet as a new method for removing a worn-out paint coating from the surface of metal parts (including those found in means of transportation) and f
Externí odkaz:
https://doaj.org/article/a9f5c11bad3f471c9393669d6717cd3a
Autor:
Jerzy Chojnacki, Jan Kielar, Leon Kukiełka, Tomáš Najser, Aleksandra Pachuta, Bogusława Berner, Agnieszka Zdanowicz, Jaroslav Frantík, Jan Najser, Václav Peer
Publikováno v:
Materials, Vol 15, Iss 3, p 1230 (2022)
Granulated beet pulp and wheat straw, first separately and then mixed in a weight ratio of 50/50%, underwent a pyrolysis process in a laboratory batch generator with process temperatures of 400 and 500 °C. The feedstock’s chemical composition and
Externí odkaz:
https://doaj.org/article/c6ef68a6c44d417f861b3c4754ea121e
Publikováno v:
Materials, Vol 14, Iss 24, p 7856 (2021)
The article presents the original technology of the extrusion of hollow curved pipes. The curvature radius of pipe axis was obtained directly during extrusion by eccentric alignment of the annular calibration gap of the extrusion die. Theoretical rel
Externí odkaz:
https://doaj.org/article/53b0e0047d964543ae80a404162ffa0c
Autor:
Łukasz Bohdal, Leon Kukiełka, Radosław Patyk, Katarzyna Kośka, Jarosław Chodór, Konrad Czyżewski
Publikováno v:
Materials, Vol 15, Iss 1, p 107 (2021)
The work concerns an analysis of the wear mechanisms of punches in the nibbling process. The nibbling process is the multiple punching of holes or external contours using circular punches, the diameter of which is much smaller than the size of the pu
Externí odkaz:
https://doaj.org/article/0486cb5cdff34eb88521885bd328e7a9
Publikováno v:
Materials, Vol 14, Iss 23, p 7242 (2021)
In modern constructions, especially aircraft, the aim is to minimize the weight of the components used. This necessitates the use of innovative construction materials, or the production of these parts with ever-decreasing wall thicknesses. To simplif
Externí odkaz:
https://doaj.org/article/cdf4bd29e0234de8afcabb4120759b5f