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Now showing items 11-20 of 23
Experimental determination of J-integral at elevated temperatures
(17th European Conference on Fracture 2008: Multilevel Approach to Fracture of Materials, Components, 2008)
In past two decades, the development of 9-12% Cr creep-resistant steel for critical components in coal-fired power stations that can withstand higher temperatures and pressures has been intensified in order to increase ...
Modelling of ductile fracture initiation in strength mismatched welded joint
(Pergamon-Elsevier Science Ltd, Oxford, 2008)
In this paper, the effect of strength mismatch and width of the welded joints oil the stress-strain distribution in the crack tip region has been discussed. The single-edge notched bend (SENB) specimens (precrack length ...
Evaluation of damage of steam pipeline steel using local approach to fracture
(American Society of Mechanical Engineers, Pressure Vessels and Piping Division (Publication) PVP, 2008)
In the paper, the level of damage of steam pipeline steel after about 100,000 hours at 540°C (1004 °F) under pressure of 42 bars (609 PSI) is analyzed. Material degradation is estimated using a combined experimental and ...
Termohidraulika isparivača ložišta parnog kotla sa prinudnom cirkulacijom / Thermal-hydraulics of evaporating tubes in the forced circulation loop of a steam boiler
(Univerzitet u Beogradu - Mašinski fakultet, Beograd, 2008)
Elektroprivreda Srbije je u toku 2005. godine nastavila radove na izgradnji TE Kolubara B snage 350 MW, koji su započeti još davne 1989. godine. Sam kotao je toranjske konstrukcije, a za isparivač kotla predviđeno je ...
Sanacija i rekonstrukcija autoklava / Overhaul and reconstruction of an autoclave
(Institut za ispitivanje materijala, Beograd, 2008)
Izveden je projekt sanacije i rekonstrukcije autoklava, bitnog dela opreme za sušenje uglja, po zahtevu kompanije Kolubara Prerada-Vreoci. Autoklavi rade pod pritiskom na povišenoj temperaturi. U toku eksploatacije na njima ...
Welded penstock, produced of high-strength steel and application of fracture mechanics parameters to structural integrity assessment
(Springer, Dordrecht, 2008)
Application of high-strength steel for welded penstock increased the probability of crack-like defects and in welded joint. Structural integrity assessment procedure is presented and applied to welded penstock produced of ...
A computer code for the prediction of mill gases and hot air distribution between burners' sections at the utility boiler
(Pergamon-Elsevier Science Ltd, Oxford, 2008)
One of the main tasks during the design or simulation and analyses of the utility steam boiler operation is the prediction of a distribution of mill gases and hot air flow rates between burners' sections. These are the ...
Dijagnostikovanje stanja i ponašanja rotornih bagera u cilju njihove revitalizacije / Behavior and condition diagnosis for bucket wheel excavators with the aim of its repair
(Savez inženjera i tehničara Srbije, Beograd, 2008)
Dijagnostika stanja i ponašanja je od presudnog značaja za donošenje pravilnog stava o radu i održavanju rotornog bagera, odnosno svih komponenti bagera, od čelične konstrukcije pa do pogonskih grupa. Da bi jedan rotorni ...
Ductile crack growth initiation in welded joints - Micromechanical approach
(Welding in the World, 2008)
The integrity of welded structures depends on the load-carrying capacities of their welded joints. Having in mind that welding process produces a large microstructural gradient through the weld, resulting in variation of ...
Raspodela napona kao uzrok otkaza korenog dela industrijskog čeličnog dimnjaka / Stress distribution as a cause of industrial steel chimney root section failure
(Univerzitet u Beogradu - Mašinski fakultet, Beograd, 2008)
Ovaj rad razmatra iniciranje otkaza korene sekcije industrijskog čeličnog dimnjaka visine 60 m. Prsline nastale u čeličnoj strukturi spoljašnjeg plašta dimnjaka značajno su uticale na integritet strukture. Izvršena je ...