Wszystkie pola: Semeniuk, A. - Katalog OPAC zbiorów

Skocz do pozycji: 1.

Tytuł:: Artificial neural network modelling of cutting force components during AZ91HP alloy milling
Autorzy:: Kulisz, M.
Zagórski, I.
Semeniuk, A.
Powiązania:: https://bibliotekanauki.pl/articles/118253.pdf
Data publikacji:: 2016
Wydawca:: Polskie Towarzystwo Promocji Wiedzy
Tematy:: simulation
cutting force
artificial neural networks
magnesium alloys
Opis:: The paper presents simulation of the cutting force components for ma-chining of magnesium alloy AZ91HP. The simulation employs the Black Box model. The closest match to (input and output) data obtained from the machining process was determined. The simulation was performed with the use of the Statistica programme with the application of neural networks: RBF (Radial Basis Function) and MLP (Multi-Layered Perceptron).
Źródło:: Applied Computer Science; 2016, 12, 4; 49-58
1895-3735
Pojawia się w:: Applied Computer Science
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 2.

Tytuł:: Artificial neural network modelling of vibration in the milling of AZ91D alloy
Autorzy:: Zagórski, I.
Kulisz, M.
Semeniuk, A.
Malec, A.
Powiązania:: https://bibliotekanauki.pl/articles/102005.pdf
Data publikacji:: 2017
Wydawca:: Stowarzyszenie Inżynierów i Techników Mechaników Polskich
Tematy:: magnesium alloys
high-speed dry milling
vibration
chatter in milling
simulation
artificial neural networks
Opis:: The paper reports the results of artificial neural network modelling of vibration in a milling process of magnesium alloy AZ91D by a TiAlN-coated carbide tool. Vibrations in machining processes are regarded as an additional, absolute machinability index. The modelling was performed using the so-called “black box” model. The best fit was determined for the input and output data obtained from the machining process. The simulations were performed by the Statistica software using two types of neural networks: RBF (Radial Basis Function) and MLP (Multi-Layered Perceptron).
Źródło:: Advances in Science and Technology. Research Journal; 2017, 11, 3; 261-269
2299-8624
Pojawia się w:: Advances in Science and Technology. Research Journal
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 3.

Tytuł:: Study of structure and morphology of surface layers formed on TRIP steel by the femtosecond laser treatment
Autorzy:: Duriagina, Z. A.
Tepla, T. L.
Kulyk, V. V.
Kosarevych, R. Ya.
Vira, V. V.
Semeniuk, O. A.
Powiązania:: https://bibliotekanauki.pl/articles/367952.pdf
Data publikacji:: 2019
Wydawca:: Stowarzyszenie Komputerowej Nauki o Materiałach i Inżynierii Powierzchni w Gliwicach
Tematy:: femtosecond laser
TRIP steel (03X13AG19)
image processing algorithms
digital image analysis
metallographic complex
laser femtosekundowy
stal TRIP
algorytmy przetwarzania obrazu
cyfrowa analiza obrazu
Opis:: Purpose: The purpose of the work is to demonstrate the possibility of using a femtosecond laser for forming surface layers with an adjustable microstructure on the surface of TRIP steel 03X13AG19, and processing the obtained images using digital complexes. Design/methodology/approach: A laser treatment of TRIP steel (03X13AG19) with pulses of femtosecond duration was carried out in a melting mode. The source of the radiation is a femtosecond titanium-sapphire Ti:Al2O3 complex consisting of a predefining femtosecond generator “Mira Optima 900-F” and regenerative amplifier Legend F-1K-HE. Peculiarities of the surface structure of irradiated samples were studied using a Solver P47-PRO atomic force microscope. The structural-geometric parameters of the surface of the investigated steel treated with the femtosecond laser were determined using the software package Nova 1.0.26.1443 and the functions of the Image Analysis. Microstructural analysis was performed using a raster electron microscope JSM 6700F and a METAM-1P microscope. In this work, the digitization of images of microstructures obtained as a result of surface irradiation by highly concentrated energy streams of femtosecond duration has been carried out. The analysis of the surface structure of laser-structured materials was carried out using a metallographic complex with the software ImProcQCV. Findings: It has been revealed that the predetermined change of the laser treatment mode changes the microrelief and the shape and size of the fragments of the surface structure of the investigated steel. The use of digital image processing allowed to generalize the morphological features of the surface structure, to assess in detail the character of the microrelief, and to monitor under in-situ mode the structure and properties of the surface of the material being studied. Research limitations/implications: The obtained research results can be applied to stainless steels of various structural classes. Practical implications: Surface digitization significantly reduces the time for research, improves the quality and accuracy of the data obtained, makes it possible to conduct in-situ researches with the further implementation of the results using the Internet of Things technologies. Originality/value: A comprehensive approach is proposed for the estimation of parameters of laser-induced periodic surface structures (LIPSS) using a metallographic complex with the software ImProcQCV.
Źródło:: Journal of Achievements in Materials and Manufacturing Engineering; 2019, 93, 1-2; 5-19
1734-8412
Pojawia się w:: Journal of Achievements in Materials and Manufacturing Engineering
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 4.

Tytuł:: Piotr Semeniuk, Koncepcja jednego organizmu gospodarczego w prawie ochrony konkurencji [The concept of a single economic unit in competition law], University of Warsaw Faculty of Management Press, Warsaw 2015, 325 p.
Autorzy:: Jurkowska-Gomułka, Agata
Powiązania:: https://bibliotekanauki.pl/articles/530008.pdf
Data publikacji:: 2016-12-31
Wydawca:: Uniwersytet Warszawski. Wydawnictwo Naukowe Wydziału Zarządzania
Źródło:: Yearbook of Antitrust and Regulatory Studies; 2016, 9(14); 317-320
1689-9024
2545-0115
Pojawia się w:: Yearbook of Antitrust and Regulatory Studies
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 5.

Tytuł:: Study on Synthesis and Modification of Conical Ni Structures by One-Step Method
Autorzy:: Skibińska, K.
Semeniuk, S.
Kutyła, D.
Kołczyk-Siedlecka, K.
Jędraczka, A.
Żabiński, P.
Powiązania:: https://bibliotekanauki.pl/articles/2049399.pdf
Data publikacji:: 2021
Wydawca:: Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:: electrodeposition
one-step method
crystal modifier
nickel cones
free-standing structures
Opis:: In this work the conical Ni structures were obtained from an electrolyte containing NH4Cl as a crystal modifier. This process is called one-step method and allows to cover large areas with micro- and nanostructures during a single electrodeposition. Presence of NH4Cl promotes a vertical direction of structure growth in order to block a horizontal one. Additionally, this method does not require using chromic acid solution, which is dangerous for the environment. Due to the ferromagnetic properties of Ni, obtained coatings could be applied as magnetic devices. The influence of the parameters such as a preparation of copper substrate, a composition of electrolyte and electrodeposition conditions (time, the electrolyte temperature and current density) was investigated in this work.
Źródło:: Archives of Metallurgy and Materials; 2021, 66, 3; 861-869
1733-3490
Pojawia się w:: Archives of Metallurgy and Materials
Dostawca treści:: Biblioteka Nauki

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