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Karakterizacija kontaktnih sočiva na bazi nanomaterijala pomoću nanoprob mikroskopa atomskih sila / Characterization of nanomaterial-based contact lenses by atomic force microscopy
(Contemporary materials, 2012)
U ovom radu predstavljeno je komparativno ispitivanje topografskih karakteristika potencijalnog novog, fotoničnog nanomaterijala za izradu kontaktnih sočiva i komercijalnog materijala kontaktnih sočiva. Ispitivanje je ...
Elastic-plastic behaviour of welded joints during loading and unloading of pressure vessels
(Elsevier Science Bv, Amsterdam, 2016)
In this paper elastic-plastic behaviour of welded joints during loading and unloading of pressure vessel has been analysed. Two stage pressuring process has been applied in previous experimental investigation and simulated ...
Classical and modernmeasuring methods inexperimental analysis of g -beam structure
(University of Belgrade, 2012)
Sustainable sub-geothermal heat pump heating in Serbia
(Pergamon-Elsevier Science Ltd, Oxford, 2011)
Considering the necessity of improvement of Serbian energy production structure through higher participation of clean and renewable energy sources, the possibility of utilization of low enthalpy geothermal waters have been ...
Theoretical-experimental determining of cooling time (t8/5) in hard facing of steels for forging dies
(Univerzitet u Beogradu - Institut za nuklearne nauke Vinča, Beograd, 2010)
This paper investigates the accuracy of analytical, empirical, and numerical expressions, i. e. the most favourable methods for calculating the cooling time from 800 to 500°C (t8/5). The degree of accuracy of time t8/5 is ...
Failure analysis of the combat jet aircraft rudder shaft
(Pergamon-Elsevier Science Ltd, Oxford, 2011)
This paper analyzes failure causes of the combat jet aircraft rudder shaft (RS) which occurred during the flight mission. A finite element method (FEM), utilized to determine the stress state of the RS subjected to hinge ...
Sensitivity Equation for Transient Three-Dimensional Heat Conduction Problem with Moving Heat Source
(Amer Inst Physics, Melville, 2010)
Sensitivity analysis of transient three-dimensional heat conduction in a plate during process of welding is performed. Crank-Nicolson method with multi-step Douglas-Gunn Alternating Direction Implicit (AD!) method is used ...
The Influence of Power and Velocity of the Heat Source on Temperature Distribution in Plate Welding Problems
(Amer Inst Physics, Melville, 2011)
The main objective of this study is to compare results obtained from some widely used simplified analytical formulas of plate welding problem to results obtained from numerical analysis of this problem based on the solution ...
Energetic analysis of hard facing and weld cladding of an air powered drop hammer damaged ram
(Univerzitet u Beogradu - Institut za nuklearne nauke Vinča, Beograd, 2010)
This paper studies problems of hard facing of damaged and initially cracked mechanical engineering heavy parts of complex geometry such as large rams of air powered drop hammers. During long-term exploitation, these parts ...
Estimation of the number of trays for natural gas triethylene glycol dehydration column
(Elsevier, Amsterdam, 2011)
The paper deals with the tray-to-tray method for determining the required number of trays in columns with intensive entrainment of liquid when the operating line of the "dry working regime" is not straight and with a small ...