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Now showing items 21-30 of 164
Primena koncepta integriteta konstrukcije na analizu stanja energetske opreme / Power equipment structural integrity assessment
(JP Elektroprivreda Srbije, Beograd, 2002)
Jedan od osnovnih ciljeva provere integriteta konstrukcije je procena preostale čvrstoće i veka komponenata kod kojih je utvrđeno postojanje prslina. U tom cilju, neophodno je što preciznije znati naponsko stanje komponente, ...
Uticaj ekvivalentnog sadržaja kiseonika u mešavini gasova na strukturu i žilavost metala šava mikrolegiranih čelika / The influence of the oxygen equivalent in a gas-mixture on the structure and toughness of microalloyed steel weldments
(Srpsko hemijsko društvo, Beograd, 2006)
Ispitivanja su izvedena na dva čelika. Prvi je mikrolegiran sa Nb, a drugi sa: Ti, Nb i V. Žilavost metala šava navedenih čelika je određena na instrumentiranom Šarpijevom klatnu. Pet različitih mešavina gasova (Ar, CO2, ...
Integritet kotlova izloženih vodoničnom oštećenju / Intergrity of boilers exposed to hydrogen damage
(Institut za ispitivanje materijala, Beograd, 2007)
Vodonična oštećenja metala, kao opšti pojam, podrazumevaju mehanička oštećenja, degradaciju mehaničkih svojstava i mikrostrukturne promene izazvane prisustvom i efektima vodonika u metalu, najčešće uz istovremeno dejstvo ...
Garancijska ispitivanja toplotnih performansi i pada pritiska razmejivača toplote / Acceptance test of thermal performances and pressure drop of heat exchangers
(Univerzitet u Beogradu - Institut za nuklearne nauke Vinča, Beograd i Društvo termičara Srbije, Beograd, 2009)
U okviru rada prikazana je metodologija ispitivanja razmenjivača toplote u zavisnosti od cilja ispitivanja. Cilj ispitivanja prikazanog razmenjivača toplote je određivanje toplotnih performansi i pada pritiska razmenjivača ...
Procena integriteta feritno-austenitnih zavarenih spojeva / Structural integrity assessment of ferrite-austenitic welded joints
(Univerzitet u Beogradu - Mašinski fakultet, Beograd, 2008)
Ovaj rad prikazuje uticaj prslina na integritet heterogenih feritno-austenitnih zavarenih spojeva primenom osnovnih principa mehanike loma. Sile rasta prsline su određene numerički primenom Kingove metode, dok je otpornost ...
Modelling of ductile crack growth in welded joints using micromechanical failure criterion
(17th European Conference on Fracture 2008: Multilevel Approach to Fracture of Materials, Components, 2008)
In this paper, ductile crack growth in strength mismatched welded joints is considered. High-strength low-alloyed (HSLA) steel in quenched and tempered condition is used as the base metal. Two different fillers are selected ...
Analysis of loading steel structure of bucket wheel excavator by stress condition measuring
(Institute of Mechanical Engineering, 2009)
A framework for comparative analysis of belgrade housing stock - determinants of carbon reduction strategy
(IBPSA 2009 - International Building Performance Simulation Association 2009, 2009)
Approximately 33% of total annual energy consumption and carbon emission in Belgrade (Serbia) are related to the housing sector. As such, the housing sector represents a key determinant in the development of an overall ...
Thermal-hydraulic analysis of a steam boiler with rifled evaporating tubes
(Pergamon-Elsevier Science Ltd, Oxford, 2007)
Rifled evaporating tubes are applied in the steam boilers with the aim to increase the steam-water mixture turbulization and to prevent the burnout of tubes walls. The rifled evaporating tubes and the working fluid forced ...
Development of the heating system using geothermal energy
(Univerzitet u Beogradu - Institut za nuklearne nauke Vinča, Beograd, 2006)
The paper presents the results achieved by the project financed by Ministry of Science and Environmental Protection of Serbia during the period 2003-2005. The purpose of the project was determination methodology for designing ...