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Prikaz rezultata 1-10 od 6776
Mechanism of electrical breakdown of gases for pressures from 10(-9) to 1 bar and inter-electrode gaps from 0.1 to 0.5mm
(IOP Publishing Ltd, Bristol, 2007)
This paper discusses the mechanisms of gas breakdown at low values of pressure and inter-electrode gap, i.e. in the vicinity of the Paschen minimum. In this area of pressure and inter-electrode gap values, breakdown occurs ...
The validity of the similarity law for the electrical breakdown of SF6 gas
(Ieee-Inst Electrical Electronics Engineers Inc, Piscataway, 2007)
The aim of this paper is to investigate the justification and the limitation of the geometrical similarity law application on the electrical breakdown of SF6 gas. For this purpose, the measurements of the dielectric breakdown ...
Three-dimensional modeling of utility boiler pulverized coal tangentially fired furnace
(Pergamon-Elsevier Science Ltd, Oxford, 2006)
This paper presents selected results of numerical simulations of processes in utility boiler pulverized coal tangentially fired dry-bottom furnace. The simulations have been performed by specially developed comprehensive ...
Predviđanje sile i momenta kod operacije urezivanja navoja korišćenjem kompjuterske simulacije / Prediction of thrust force and torque in tapping operations using computer simulation
(Univerzitet u Beogradu - Mašinski fakultet, Beograd, 2006)
Pristup opšte mehanike rezanja, uspešno je primenjivan za različite zahvate obrade alatima složene geometrije. Ovde je primenjen za predviđanje aksijalne sile i momenta pri urezivanju navoja mašinskim ureznikom. Osnovna ...
Micromechanical analysis of constraint effect on fracture initiation in strength mismatched welded joints
(Trans Tech Publications Ltd, 2007)
In this paper the micromechanical approach to ductile fracture was applied in a study of constraint effect on crack growth initiation in mismatched welded joints. The single-edged notched bend specimens (precrack length a ...
Nonlinear transformation of electromagnetic wave in time-varying plasma medium: Longitudinal propagation
(Amer Inst Physics, Melville, 2006)
The nonlinear transformation of a linearly polarized source plane electromagnetic wave, propagating along an external static magnetic field in free space for t lt 0, due to the sudden creation of homogeneous plasma at ...
Z mere povezanosti između Fuzzy skupova / Z similarity measure among Fuzzy sets
(Univerzitet u Beogradu - Mašinski fakultet, Beograd, 2006)
U radu se najpre analiziraju postojeće mere povezanosti između fuzzy skupova Postojeće mere definisane su kao mere povezanosti dva fuzzy skupa. Ograničenja koja ove mere imaju su da se one primenjuju za fuzzy skupove čije ...
Crack tip strain on ship and in situ measurement in shipyards
(IFAC Secretariat, 2007)
The paper presents the application extent of procedures for measurement deformations on ships. The actual deformation distribution was measured on the surface of the specimen by the optical grating method (OGM) parallel ...
Određivanje parametara zamornog rasta prsline kod zavarenih spojeva od HSLA čelika / Determination of fatigue crack growth parameters in welded joint of HSLA steel
(Institut za ispitivanje materijala, Beograd, 2011)
Integritet konstrukcije i sigurnost u radu zavarenih posuda pod pritiskom uglavnom zavisi od ponašanja zavarenih spojeva. Pored svih uloženih napora u proizvodnji i poboljšanja postupaka zavarivanja, uključujući i stroge ...
Numerical and analytical modeling of elastic-plastic fracture mechanics parameters
(Trans Tech Publications Ltd, 2007)
Structural integrity and service reliability depend on the fracture resistance of a material. Cracks in the material are the locations of stress concentration, and elastic-plastic deformation can occur causing the development ...