Removal of systematic failure of belt conveyor drive by reducing vibrations

J Homišin, R Grega, P Kaššay, G Fedorko… - Engineering Failure …, 2019 - Elsevier
The performance of continuous conveyor systems based on belt conveyors depends on their
reliable and trouble-free operation. The most common failures encountered during their …

Failure analysis of driveshaft of truck body caused by vibrations

R Grega, J Krajňák, L Žuľová, G Fedorko… - Engineering Failure …, 2017 - Elsevier
In recent years, a current trend of mechanical engineers is to design such mechanical drives
which will have a guaranteed life time. In this guaranteed operating life it is many times …

[HTML][HTML] Innovative solution of torsional vibration reduction by application of pneumatic tuner in shipping piston devices

R Grega, J Krajnak, L Žuľová, M Kačír… - Journal of Marine …, 2023 - mdpi.com
The industries of shipping, shipbuilding and port operations are among those in which
mechanical drives with piston machines are widely used. The wide use of piston machines …

Reduction of the NOx emissions in vehicle diesel engine in order to fulfill future rules concerning emissions released into air

J Sinay, M Puškár, M Kopas - Science of the Total Environment, 2018 - Elsevier
In the past period occurred information about a fact that in some of the motorcars was
installed a software, which enabled to hide the over-limit values of the nitrogen oxides …

The failures of flexible couplings due to self-heating by torsional vibrations–validation on the heat generation in pneumatic flexible tuner of torsional vibrations

J Krajňák, J Homišin, R Grega, P Kaššay… - Engineering Failure …, 2021 - Elsevier
The phenomenon of torsional vibrations which arise in mechanical systems has become an
important issue in mechanical design. Flexible couplings are widely used to tune dynamic …

Optimization of noisiness of mechanical system by using a pneumatic tuner during a failure of piston machine

L Žuľová, R Grega, J Krajňák, G Fedorko… - Engineering Failure …, 2017 - Elsevier
The stage of construction and operation of the machines requires monitoring of the steps
causing negative effects on humans and environment in the form of noise during their use …

[HTML][HTML] Rotor resonance avoidance by continuous adjustment of support stiffness

S Laine, S Haikonen, T Tiainen, R Viitala - International Journal of …, 2024 - Elsevier
This paper presents a method to reduce lateral vibration amplitudes in large rotating
machines. The method is based on avoiding resonances by altering the natural frequencies …

Electronic constant twist angle control system suitable for torsional vibration tuning of propulsion systems

J Homišin, P Kaššay, M Urbanský, M Puškár… - Journal of Marine …, 2020 - mdpi.com
Currently, great emphasis on reducing energy consumption and harmful emissions of
internal combustion engines is placed. Current control technology allows us to customize …

Marine Engines Performance and Emissions

MIL Galdo - Journal of Marine Science and Engineering, 2021 - mdpi.com
Marine engines are key components in most ships. Nowadays, diesel engines power most
of the ships in the world. These engines are efficient in comparison with other thermal …

[PDF][PDF] Frequency of free vibration in systems with power-law restoring force

I Grega, R Grega, J Homisin - Bulletin of the Polish Academy of …, 2021 - bibliotekanauki.pl
To model the nonlinear behaviour of vibrating systems, Taylor expansion with integer
powers is often used. Some systems, however, are inherently nonlinear. In the case of a non …