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Приказ резултата 31-40 од 416
Tribological properties of WC-Co/NiCrBSi and Mo/NiCrBSi plasma spray coatings under boundary lubrication conditions
(Fakultet inženjerskih nauka, Kragujevac, 2017)
The tungsten carbide based WC-Co/NiCrBSi (50/50) and molybdenum based Mo/NiCrBSi (75/25) coatings were investigated under boundary lubricated sliding conditions, and their tribological properties were analysed and compared. ...
Enhanced matrix function approximation
(Kent State University, 2017)
Matrix functions of the form f (A) v, where A is a large symmetric matrix, f is a function, and v not equal 0 is a vector, are commonly approximated by first applying a few, say n, steps of the symmetric Lanczos process ...
Design of a high capacity derrick crane considering the effects induced by load application and release
(Institut za istraživanja i projektovanja u privredi, Beograd, 2017)
The main object of this paper is to design a very big derrick crane (the main boom is 80 m in length and the payload is 60 t) considering the dynamical effects induced by moving a load. The research was developed through ...
Numerical analysis of a hypersonic turbulent and laminar flow using a commercial cfd solver
(Univerzitet u Beogradu - Institut za nuklearne nauke Vinča, Beograd, 2017)
Computational fluid dynamics computations for two hypersonic flow cases using the commercial ANSYS FLUENT 16.2 CFD software were done. In this paper, an internal and external hypersonic flow cases were considered and ...
Increase energy efficiency of thermal power plant Kostolac B by revitalization ventilation mills
(Taylor & Francis Inc, Philadelphia, 2017)
Ventilation mill for grinding coal is one of the main steam power plants in the system that makes a significant effect on the level of energy efficiency with its work. The aim of this paper is to increase the energy ...
Cavitation resistance of turbine runner blades at the hydropower plant 'djerdap'
(Institut za ispitivanje materijala, Beograd, 2017)
Hydropower plants need to develop means of protection of turbine and hydromechanical equipment from undesirable occurrences, such as degradation of parent material and/or weld metal of parts and structures caused by stresses ...
Ductile fracture of pipe-ring notched bend specimens - Micromechanical analysis
(Pergamon-Elsevier Science Ltd, Oxford, 2017)
Integrity of pipes is typically assessed by testing fracture mechanics specimens, such as compact tensile (CT) or single-edge notched bending (SENB). However, for some pipe dimensions it is not easy or possible to fabricate ...
Kompjuterski potpomognuta, brza, nedestruktivna metoda za evaluaciju svežine mesa / Computer assisted rapid nondestructive method for evaluation of meat freshness
(Univerzitet u Beogradu - Mašinski fakultet, Beograd, 2017)
U ovom istraživanju je za procenu svežine mesa razvijena tehnika koja koristi nedestruktivnu metodu na bazi optičke slike i kompjuterski potpomognutu analizu. Tehnika podrazumeva kombinovanje Opto-magnetne imidžing spektro- ...
Experimental Investigation of the Efficiency of Heat Pump Drying System with Full Air Recirculation
(Wiley, Hoboken, 2017)
The paper presents results of an experimental investigation of convective drying of apples var. Idared, potatoes var. Desiree and bananas var. Grand Nein, in full recirculation laboratory-scale dryer. The experiments were ...
Exploring wear at the nanoscale with circular mode atomic force microscopy
(Beilstein-Institut, Frankfurt Am Main, 2017)
The development of atomic force microscopy (AFM) has allowed wear mechanisms to be investigated at the nanometer scale by means of a single asperity contact generated by an AFM tip and an interacting surface. However, the ...