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Now showing items 11-20 of 99
Control algorithm applied on the diesel engine
(VDI Verein Deutscher Ingenieure, 2014)
Material characterization of the main steam gate valve made of X20CrMoV 12.1 steel after long term service
(Elsevier Science Bv, Amsterdam, 2014)
Martensitic steel X20CrMo12.1 has been extensively used within the last few decades as a material for tubing systems and pipelines in thermal power plants (TPP). Long term behavior of this steel is very well known and ...
Fracture mechanics analysis of damaged turbine rotor discs using finite element method
(Univerzitet u Beogradu - Institut za nuklearne nauke Vinča, Beograd, 2014)
This paper presents evaluation fracture mechanics parameters in low pressure turbine components. Critical locations such as keyway and dovetail area are experiencing stress concentration leading to crack initiation. Stress ...
Radiative heat exchange inside the pulverized lignite fired furnace for the gray radiative properties with thermal equilibrium between phases
(Elsevier France-Editions Scientifiques Medicales Elsevier, Paris, 2014)
The objective of the research was to find if an agreement of the results of a numerical investigation with experimental data could be achieved considering the two-phase medium in thermal equilibrium. Influence of the gray ...
Effect of Exploitation Conditions and Flaw Geometry on the Load Carrying Capacity of Casing Pipes for Oil Drilling Rigs
(Trans Tech Publications Ltd, Durnten-Zurich, 2014)
The subject of this work is examination of API J55 steel casing pipes manufactured by high frequency (HF) contact welding. Since the pipes were withdrawn after about 70 000 hours of service in an oil drilling rig, the ...
Numerical aspects for efficient welding computational mechanics
(Univerzitet u Beogradu - Institut za nuklearne nauke Vinča, Beograd, 2014)
The effect of the residual stresses and strains is one of the most important parameter in the structure integrity assessment. A finite element model is constructed in order to simulate the multi passes mismatched submerged ...
Višeciljna fazi optimizacija veličine i položaja piezoelektričnih aktuatora i senzora za upravljanje vibracijama bazirana na optimizaciji rojem čestica (deo 1: teorijski model) / Mul'ticelevaja faza optimizacii razmera i raspoloženija p'ezoëlektričeskih privodov i datčikov dlja upravlenija vibracijami na osnove optimizacii roja častic (čast' 1: teoretičeskaja model') / (francuski) Optimisation 'fuzzy' multi objective de la taille et de la location des actuaires piézoélectriques et des capteurs pour le contrôle des vibrations basée sur l'optimisation par essaim des particules (première partie: modèle théorétique)
(Vojnotehnički institut, Beograd, 2014)
Određivanje veličine i položaja piezoelektričnih aktuatora i senzora za aktivno upravljanje vibracijama savitljivih struktura obično je bazirano na maksimalnoj efikasnosti upravljanja i postizanja maksimalnog izlaza za ...
Interfacial crack behavior in the stationary temperature field conditions
(Univerzitet u Beogradu - Institut za nuklearne nauke Vinča, Beograd, 2014)
The brittle coatings, made of different materials, when subjected to elevated temperatures and in the heat exchange conditions, are susceptible to delamination. Those coatings, as well as thin films, can be used for various ...
The initial analysis of the river Ibar temperature downstream of the lake Gazivode
(Univerzitet u Beogradu - Institut za nuklearne nauke Vinča, Beograd, 2014)
As a result of a very limited number of geometric and other input data, the temperature modeling of the river Ibar downstream of the lake Gazivode was started by analyzing one river reach between Pridvorica, secondary dam ...
Structural, mechanical and tribological characterization of Zn25Al alloys with Si and Sr addition
(Elsevier Sci Ltd, Oxford, 2014)
The ZA-27 alloy is a zinc-aluminium casting alloy that has been frequently used as the material for sleeves of plain bearings. It has good physical, mechanical and tribological properties. However, one of the major ...