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Numerical analysis of anchored bored piles in fractured rock masses
(ICE Publishing, 2015)
Grdelicka gorge, through which upcoming Motorway E-75 will pass by, is made of very old rock masses, influenced by strong tectonic forces and severe physical, chemical and erosion processes. The oldest and most frequents ...
Failure resistance of drilling rig casing pipes with an axial crack
(Pergamon-Elsevier Science Ltd, Oxford, 2015)
Working conditions of casing pipes in drilling rigs can significantly influence the initiation and development of damage in the material, and therefore also the safe service of the entire system. In this work, an integrity ...
Bond strength of restorative materials to hydroxyapatite inserts and dimensional changes of insert-containing restorations during polymerization
(Elsevier Sci Ltd, Oxford, 2015)
Objective. To determine the shear bond strength (SBS) between synthetic controlled porous hydroxyapatite (HAP) inserts and restorative materials and dimensional changes of insert-containing restorations during curing. ...
Irreversible changes of vacuum circuit breakers' dielectric strength as a result of current breaking operation
(Institute of Electrical and Electronics Engineers Inc., 2015)
In the vacuum switching element, current breaking operations cause the changes of the electrodes' surface by means of the following mechanism: 1 - cathode erosion (during the movement of electric arc's cathode spot); 2 - ...
Simplified method for generating slope seismic deformation hazard curve
(Elsevier Ltd, 2015)
A simplified method for generating slope deformation hazard curve that takes into account the variations of input parameters is presented in this paper. The main assumption in the new approach is that the occurrence of ...
Tensile properties of ADI material in water and gaseous environments
(Elsevier Science Inc, New York, 2015)
Austempered ductile iron (ADI) is an advanced type of heat treated ductile iron, having comparable mechanical properties as forged steels. However, it was found that in contact with water the mechanical properties of ...
Characteristics' optimization of gas-filled surg arresiers by using gas mixtures
(Institute of Electrical and Electronics Engineers Inc., 2015)
The increasing trend of electronic components' miniaturization makes them unresisting to overvoltage occurrences. Therefore, it is necessary to pay special attention to overvoltage protection at the low-voltage level. ...
Belgrade solid waste management optimization potential of landfill gas recovery
(Gh Asachi Technical Univ Iasi, Iasi, 2015)
Establishing a management system for collecting and disposing the solid waste materials is of great importance in urban areas. Belgrade, the capital city of Serbia, is at its initial phase of managing this problem. Currently, ...
The parameters of the free electrons gas spectrum of noble gases mixture at small pressures and inter-electrode distances
(Institute of Electrical and Electronics Engineers Inc., 2015)
Strictly speaking, electrically uncharged and electrically charged gas mixtures can approach the Maxwell's specter in the context of low-ionized mono-atomic mixtures within a weak electric field. The parameters of the ...
The correlation and regression between the pre-breakdown current and breakdown voltage of the vacuum switchgear in dependence of switching operation
(Institute of Electrical and Electronics Engineers Inc., 2015)
Determining the correlation and regression is a statistical method applied when several random variables are simultaneously being measured on the same statistical sample and if their interdependency is being investigated. ...