Industrial Lubrication and Tribology: Volume 74 Issue 3

Guest editorial: BALKANTRIB ‘20

Aleksandar Vencl

Investigation of tribological properties of environmentally friendly ionic liquids as a potential lubricity improving additives for water-based lubricants

Raimondas Kreivaitis, Milda Gumbytė, Jolanta Treinytė

This paper aims to investigate the tribological properties of two protic ionic liquids used as lubricity-improving additives in the water. Their concentration was optimized for…

The importance of the electrical properties of hydraulic fluids

Darko Lovrec, Vito Tič

Apart from the basic material properties of liquid lubricants, such as, e.g., the viscosity and density of the hydraulic fluid, it is also important to have information regarding…

Performance characteristics of lubricant based on rapeseed oil containing different amounts of metal-containing additive

Mara Kandeva, Zhecho Kalitchin, Elena Zadorozhnaya, Aleksandar Vencl

The purpose of this study was to investigate the biobased (rapeseed) oil with the addition of different amounts of metal-containing additive in a steel–bronze tribological system…

About the change of flow factors during the run-in process of lubricated contacts

Achill Holzer, Katharina Schmitz

This paper aims to increase the knowledge of the run-in process of lubricated contacts in hydraulical pumps. When performing EHL simulations of tribological contacts, the surface…

3D texture parameters for wear scars after severe regime

Lorena Deleanu, Traian Florian Ionescu, George Catalin Cristea, Cornel Camil Suciu, Constantin Georgescu

This paper aims to present an analysis of several 3 D texture parameters for the entire wear scars obtained in severe regime, on a four-ball tester. The aim of this analysis is to…

Influence of the air pressure and oil amount to the temperature of the high-speed bearings lubricated by oil mist

Miloš Stanković, Nenad Kolarević, Nikola Davidovic, Marko Miloš

The purpose of this paper is to improve the lubrication and remove as much as possible of the heat generated in the bearing assembly, embedded in the jet engine.

Modelling the thermal state of a turbocharger bearing housing when calculating the rotor dynamics at transient modes

Elena Zadorozhnaya, Vladislav Hudyakov, Elizaveta Polyacko, Igor Dolgushin

The reliability of various mechanisms and machines is determined by the durability of tribo-units, which must ensure operation at high temperatures and an extended range of rotor…

Optimization of parameters that affect wear of A356/Al2O3 nanocomposites using RSM, ANN, GA and PSO methods

Blaža Stojanović, Sandra Gajević, Nenad Kostić, Slavica Miladinović, Aleksandar Vencl

This study aims to present a novel methodology for the evaluation of tribological properties of new nanocomposites with the A356 alloy matrix reinforced with aluminium oxide (Al₂O₃…

Investigation on wear of biopolymer parts produced by 3D printing in lubricated sliding conditions

Mihail Zagorski, Georgi Todorov, Nikolay Nikolov, Yavor Sofronov, Mara Kandeva

The purpose of this study is to investigate the influence of the printing temperature on several tribological parameters.

Modularity of total hip prosthesis and its tribological implications

Liliana-Laura Badita, Virgil Florescu, Constantin Tiganesteanu, Lucian Capitanu

The study aims to analyze the fretting phenomenon, manifested at the taper junctions of modular total hip prostheses (THP). Modularity of prostheses implies the micro-movement…