Lubricant Analysis as the Most Useful Tool in the Proactive Maintenance Philosophies of Machinery and its Components

Abstract

Condition monitoring and fault diagnosis of engineering systems are critical for the stable and reliable operation in various areas as mobile technology (primarily agricultural, forestry, mining and construction machinery), railways, airlines and large fleets. Thus, to achieve a satisfactory level of reliability for the life of a machine, proactive maintenance strategy is the only key. This means that the application of classical reliability methods suitable for components with sudden failures can be complemented by technical diagnostic methods which have the potential to provide the information about the system condition. In this article we focus on the diagnostic signal related to the used oil – tribodiagnostic measures and is an interesting theoretical item related to the evaluation of the quality of lubricants in the aspect of operation. This is because the oil is in direct contact with single parts of the assessed technical systems. Results tests were reviewed and derived from various parameters of lubricants and their limits that highlight the condition and state of the lubricants under varying categories which include, physiochemical, elemental (wear), contamination and additive analysis.

Application of Multidimensional Statistical Analysis in Tribotechnical Diagnostics of Hydraulic Fluids in Woodworking Equipment

“…The authors [19][20][21] point out the importance of performing a complex analysis of oil and machine condition by introducing multiparametric diagnostics, which includes tribotechnical diagnostics and its implementation in the machine maintenance plan. A proactive approach ensures a constant check of the machine's technical condition and increases its operability [22,23].…”

Ranking of management factors for safe maintenance system based on Grey Systems Theory

“…The type of maintenance can be different depending on the sector in which the task is performed (Kučera and Kopčanová, 2020), hence the consequences of working in inappropriate conditions can be very diverse. For example, during corrective maintenance, maintenance workers are exposed, among others, to psychosocial risks in the form of high professional demands and intense time pressure.…”

Application of FTIR-ATR Spectrometry in Conjunction with Multivariate Regression Methods for Viscosity Prediction of Worn-Out Motor Oils

“…Products of thermo-oxidative degradation and soot in oil have an effect on the increase in viscosity. Oxidation of the oil is accompanied by its darkening, increase in its acidity and viscosity, odour and discharge of insoluble oxidation products [13]. The increase in viscosity can also be caused by the penetration of coolant into the oil due to an operational accident of the engine.…”