Претраживање
Приказ резултата 41-50 од 163
Istraživanje mogućnosti primene lasera u čišćenju arheoloških metalnih predmeta / Laser cleaning of the archaeological metal sample from the Danube
(Inženjersko društvo za koroziju, Beograd, 2018)
U radu su prikazani rezultati laserskog čišćenja korozivnih i drugih naslaga na metalnom arheološkom predmetu koji je nađen u Dunavu. Korišćen je Nd:YAG laser, energije do 750mJ i talasne dužine λ=1064nm i 532nm. Efikasnost ...
Izazovi budućih istraživanja u oblasti industrijske bezbednosti / Challenges of future research in the area of industrial safety
(Institut za ispitivanje materijala, Beograd, 2015)
In today's turbulent business conditions, characterised by rapid technological development of a 'post industrial' society, in which new technologies result in new risks, safety management of complex techno-socio-ecological ...
Shear strength testing of hardfaced samples using special tool on an universal testing machine
(Institut za ispitivanje materijala, Beograd, 2015)
Complex working conditions of forging dies are the most frequent causes of their damage, requiring suitable hard facing repair procedures. The method of determining the bond strength between the hardfaced layer and the ...
Provera sigurnosti rada isparivača energetskog parnog kotla u TE 'Kostolac B' / Work verification of the energy steam boiler evaporator in the Power plant 'Kostolac B'
(Univerzitet u Beogradu - Mašinski fakultet, Beograd, 2012)
U okviru Elektroprivrede Srbije 1991. godine puštena je u rad Termoelektrana 'Kostolac B' snage 2 × 350 MW. Na osnovu dosadašnjih ispitivanja cevnog sistema parnog kotla utvrđeno je da se on nalazi u 'lošem' stanju. Njegovi ...
Uticaj zone loma iznad podzemne prostorije na opterećenje konstrukcije sa visećom podgradom / Impact of a failure zone above the underground roadway on rockbolting structure loading
(Institut za ispitivanje materijala, Beograd, 2015)
Research in this article presents development of model of strata interaction with roof support installed in bauxite. The main task of this research is modelling of rock degradation over the surface of underground roadway ...
Effect of locally damaged elbow segments on the integrity and reliability of the heating system
(Institut za ispitivanje materijala, Beograd, 2016)
This paper presents the integrity and reliability evaluation of the heating system as a whole, based on results of metallographic tests performed on parent material and the ultrasonic measurement of wall thickness of elbows ...
Stress state around imperfections in welded joints
(Institut za ispitivanje materijala, Beograd, 2015)
Because of their geometry, welded joints can cause a local increase of stress. In the presence of imperfections in welded joints the local stress additionally increases and can lead to the formation of cracks. Cracks are ...
An analysis of random mechanical failures of bucket wheel excavator
(Institut za ispitivanje materijala, Beograd, 2015)
In this article random mechanical failures of bucket wheel excavator at open cast mine "Tamnava Zapad" are analysed. Random mechanical failures of mining equipment may represent an important factor in coal production because ...
Ponašanje legure Al-Mg frikciono zavarene mešanjem pri udarnom lomu / Impact fracture response of friction stir welded Al-Mg alloy
(Institut za ispitivanje materijala, Beograd, 2013)
Ispitivani su uticaji parametara frikcionog zavarivanja mešanjem na ponašanje loma udarom po Šarpiju u leguri Al-Mg 5083. Rotaciona i poprečna brzina zavarivanja su povezane sa dinamičkom inicijacijom prsline i duktilno ...
Uporedna analiza proračuna mašinskih elemenata simuliranjem kombinovanog opterećenja i odvojenim simuliranjem komponentnih opterećenja - studija slučaja / Combined load simulation vs component loads simulation in machine design: A case study
(Univerzitet u Beogradu - Mašinski fakultet, Beograd, 2014)
Na sadašnjem nivou razvoja tehnologije, u stvarnim radnim uslovima, gotovo svi mašinski elementi su opterećeni kombinovanim opterećenjima. Cilj istraživanja prikazanog u ovom radu je ukazivanje na značaj proračuna nosivosti ...