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Wyszukujesz frazę "Srećković, M." wg kryterium: Autor


Wyświetlanie 1-7 z 7
Tytuł:
Laser Sheet Scattering and the Cameras Positions in Particle Image Velocimetry
Autorzy:
Ilić, J.
Čantrak, Dj.
Srećković, M.
Powiązania:
https://bibliotekanauki.pl/articles/2047893.pdf
Data publikacji:
2007-11
Wydawca:
Polska Akademia Nauk. Instytut Fizyki PAN
Tematy:
42.25.Fx
42.62.Eh
42.68.Mj
42.79.Qx
Opis:
Simulations of laser sheet scattering by microparticles, based on the generalized Lorenz-Mie theory for the case of numerous random spatial distributions of scattering particles, were done, using the novel computational time saving strategy. This type of scattering by particles immersed in a fluid flow and its recording on cameras, presents the essence of particle image velocimetry systems. The continuous and large change of the intensity of a scattered light falling on the camera causes the sequences of images of varying quality, which makes many of them useless. This paper shows how the problem could be alleviated by determining the angles of low relative standard deviation of scattered light intensity and using them for recording, as well as by avoiding the angles of high relative standard deviation of scattered light intensity.
Źródło:
Acta Physica Polonica A; 2007, 112, 5; 1113-1118
0587-4246
1898-794X
Pojawia się w:
Acta Physica Polonica A
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Laser-PMMA Interaction and Mechanical Stresses
Autorzy:
Kovačević, A.
Srećković, M.
Gospavić, R.
Ristić, S.
Jovanić, P.
Powiązania:
https://bibliotekanauki.pl/articles/2047863.pdf
Data publikacji:
2007-11
Wydawca:
Polska Akademia Nauk. Instytut Fizyki PAN
Tematy:
81.40.Wx
42.25.Bs
61.80.Ba
Opis:
The polymethylmetacrylate samples were exposed to laser beams of various types of lasers. The modifications of the surfaces of the samples were analyzed by light microscopy and scanning electron microscopy. Numerical approach to thermal distribution for specified power ranges of selected lasers was obtained. The results of polymethylmetacrylate drilling and cutting performed by laser and non-laser means were compared by photoelastic methods.
Źródło:
Acta Physica Polonica A; 2007, 112, 5; 981-986
0587-4246
1898-794X
Pojawia się w:
Acta Physica Polonica A
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Fine-Scale Structure Investigation of Nimonic 263 Superalloy Surface Damaged by Femtosecond Laser Beam
Autorzy:
Milosavljevic, A.
Petronic, S.
Sreckovic, M.
Kovacevic, A.
Krmpot, A.
Kovacevic, K.
Powiązania:
https://bibliotekanauki.pl/articles/1791236.pdf
Data publikacji:
2009-10
Wydawca:
Polska Akademia Nauk. Instytut Fizyki PAN
Tematy:
01.55.+b
42.62.-b
81.05.Bx
81.20.Vj
Opis:
Due to the specific conditions of manufacturing, processing and utilization of nickel-base superalloys, the implementation of contemporary precision techniques is necessary in the research of the alloys features. Multi-component nickel-base superalloys, with about of 50% of nickel content, are commonly exploited in the conditions of high temperatures and pressures as well as in various aggressive operating environments. For successful quality control, which includes the monitoring of the changes in the alloy microstructure, fine-scale structure investigations are necessary. In this work, the samples of nickel-base superalloys have been exposed to 800 nm femtosecond laser in various operating regimes. Surface damages and dents caused by femtosecond laser pulses have been observed by optical and scanning microscopy.
Źródło:
Acta Physica Polonica A; 2009, 116, 4; 553-556
0587-4246
1898-794X
Pojawia się w:
Acta Physica Polonica A
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Laser Interaction with Material - Theory, Experiments and Discrepancies
Autorzy:
Srećković, M.
Ilić, J.
Davidović, M.
Djokić, B.
Tomić, Ž.
Latinović, Z.
Družijanić, D.
Powiązania:
https://bibliotekanauki.pl/articles/1795618.pdf
Data publikacji:
2009-10
Wydawca:
Polska Akademia Nauk. Instytut Fizyki PAN
Tematy:
01.55.+b
42.62.-b
42.25.Bs
81.40.Wx
61.80.Ba
Opis:
The experimental treatment of chosen material with laser beams, starting from continuous wave up to fs pulses, produces the necessity to find the common and sophisticated theoretical approaches to interaction modeling. For chosen materials, some laser treatment and damage analyses are performed. The provoked stresses and parameters of transport processes (penetration depth) are calculated by using the programs for electrical circuit analyses. Some inconsistencies in the treatment of large area laser-material interaction are discussed.
Źródło:
Acta Physica Polonica A; 2009, 116, 4; 618-621
0587-4246
1898-794X
Pojawia się w:
Acta Physica Polonica A
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Ruby Laser Interaction with Austenite Structural Materials
Autorzy:
Milosavljević, A.
Petronić, S.
Srećković, M.
Ristić, S.
Nešić, I.
Pljakić, R.
Negovanović, V.
Powiązania:
https://bibliotekanauki.pl/articles/1808064.pdf
Data publikacji:
2009-04
Wydawca:
Polska Akademia Nauk. Instytut Fizyki PAN
Tematy:
01.55.+b
42.62.-b
81.05.-t
Opis:
The investigations were carried out on chrome nickel steel and nickel based superalloy samples thermo-mechanically treated to obtain optimal mechanical properties and surface stability. Chrome nickel steel and a few nickel based superalloys samples were exposed to the laser beam before creep deformation process. The second group of nickel based superalloy samples were exposed after the creep deformation. The damages occurred by exposing of chrome nickel steel and nickel base superalloy samples to the ruby laser were analyzed by scanning electron microscope and energy-dispersive X-ray spectrometry. In this paper, the influence of laser dynamical regime (MW/$mm^{2}$) to the microstructural changes of heat treated chrome nickel steel and nickel based superalloy are analyzed and discussed.
Źródło:
Acta Physica Polonica A; 2009, 115, 4; 823-825
0587-4246
1898-794X
Pojawia się w:
Acta Physica Polonica A
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Models of Interactions of Laser Beams with Materials of Interest for Optical Components and Provoked Damages
Autorzy:
Srećković, M.
Ilić, J.
Kovačević, A.
Pantelić, S.
Latinović, Z.
Borna, N.
Ćosović, V.
Powiązania:
https://bibliotekanauki.pl/articles/2047854.pdf
Data publikacji:
2007-11
Wydawca:
Polska Akademia Nauk. Instytut Fizyki PAN
Tematy:
81.40.Wx
61.80.Ba
42.62.-b
Opis:
Models of interactions of laser beams with materials of interest for optical components are presented in this paper. Special attention is paid to damages which appear within both active materials and optical components along the path of a propagating beam with theoretical treatment via various models.
Źródło:
Acta Physica Polonica A; 2007, 112, 5; 935-940
0587-4246
1898-794X
Pojawia się w:
Acta Physica Polonica A
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
The Effects of Nonstoichiometry on Optical Properties of Oxide Nanopowders
Autorzy:
Šćepanović, M.
Grujić-Brojčin, M.
Dohčević-Mitrović, Z.
Vojisavljević, K.
Srećković, T.
Popović, Z. V.
Powiązania:
https://bibliotekanauki.pl/articles/2047872.pdf
Data publikacji:
2007-11
Wydawca:
Polska Akademia Nauk. Instytut Fizyki PAN
Tematy:
77.84.Bw
73.63.Bd
78.67.-n
78.55.-m
78.30.-j
Opis:
In this paper we illustrate the change of optical properties of mechanically activated wurtzite ZnO powder and laser synthesized anatase TiO$\text{}_{2}$ nanopowder due to the nonstoichiometry caused by mechanical activation and/or laser irradiation in vacuum. Both of the investigated materials are widely used in optoelectronics and the examination of their optical properties under different preparation and environmental conditions is of great practical interest.
Źródło:
Acta Physica Polonica A; 2007, 112, 5; 1013-1018
0587-4246
1898-794X
Pojawia się w:
Acta Physica Polonica A
Dostawca treści:
Biblioteka Nauki
Artykuł
    Wyświetlanie 1-7 z 7

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