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Integrity assessment of turbine flat cover pipe
(Institut za ispitivanje materijala, Beograd, 2018)
The turbine flat cover pipe (dimension phi 219.1x12.7 mm, and material STPG-38) is tested and cracks are found. Determination of the required wall thickness for a pipe exposed to internal pressure is done according to EN ...
Non-homogeneity effect in the spherical shell by using seth's theory
(Institut za ispitivanje materijala, Beograd, 2017)
This paper presents nonlinear deformation behaviour of non-homogeneous spherical shell examined under pressure by using Seth's transition theory. It has been seen that for increased material compressibility in thickness ...
Welding safety by using a new model of welders' recertification in the oil and gas industry
(Institut za ispitivanje materijala, Beograd, 2021)
The paper presents a solution applied for determining the quality of the welding process in oil and gas industrial plants, as well as reliable verification of professional qualification of welding personnel. By applying ...
Numerical analysis of heat transfer during friction stir welding
(Institut za ispitivanje materijala, Beograd, 2017)
The paper deals with the heat input and maximum temperature that develops in friction stir welding with different welding parameters. The finite element method has been used for numerical analysis of temperature distribution ...
Experimental and numerical cross-correlated modal analysis of the floor structure dynamics in a thermal power plant
(Institut za ispitivanje materijala, Beograd, 2015)
This article presents search methodology after the cause of excessive floor vibrations in a thermal power plant control room. The floor structure is a composition of a steel grillage and concrete slabs at 12 m level above ...
Predupređivanje otkaza obrtnih mašina pomoću vibrodijagnostike / Failure prevention of rotating equipment by vibrodiagnostics
(Institut za ispitivanje materijala, Beograd, 2012)
Opterećene obrtne mašine, kao što su turbine i ventilatori, često otkazuju, ponekad sa katastrofalnim posledicama. Neprekidno poboljšavanje osobina materijala, tehnologije proizvodnje i inspekcija, podržano usavršenim ...
Numerical simulation of welded joint with multiple various defects
(Institut za ispitivanje materijala, Beograd, 2021)
The paper presents continuation of extensive work on determining the behaviour of welded joints in the presence of multiple various types of defects, a problem that is not sufficiently covered by existing standards, such ...
Fire resistance of boiler room building structure for liquid and gaseous fuels
(Institut za ispitivanje materijala, Beograd, 2021)
Significant limitation of the methodology for determining the class of fire resistance, defined by the group of standards DIN 18230, is its inapplicability to industrial facilities in which energy is produced or distributed. ...
Analysis of fracture behaviour of thin s316l stainless steel plates
(Institut za ispitivanje materijala, Beograd, 2017)
In this paper are presented experimental analyses of the behaviour of 316L stainless steel in regard to fracture, according to standard methods of investigation on modified tensile C(T) specimens. The S316L alloy is selected ...
Klasifikacija opreme pod pritiskom prema direktivi 2014/68/EU i regulativi 1272/2008/EU / Classification of pressure equipment according to directive 2014/68/EU and regulation no 1272/2008/EU
(Institut za ispitivanje materijala, Beograd, 2016)
For the first time after 17 years the Directive 97/23/EC of the European Council and the Council on the harmonisation of the laws of the Member States relating to the making available on the market of pressure equipment ...