Abstract Fabric composites are widely employed in self-lubricating bearing liners as solid lubrication materials. Although the tribological behaviors of fabric have been extensively studied, cryogenic properties and mechanisms scarcely reported largely unclear to instruct material design for aerospace other high-tech applications. Herein, polytetrafluoroethylene (PTFE)-based hybrid-fabric were ...

This study has investigated the influence of journal bearing wear on dynamic behaviour a flexible rotor with central disc. Rotors supported bearings are susceptible to self-excited whirling, leading unstable conditions. Prior knowledge stability limit speed is important avoid excessive vibration rotating machines. For in this paper, were lubricated powder owing high-temperature applications whe...

Metal abrasive particle content in lubricating oil is an important index to judge the degree of deterioration of lubricating oil. Established a spiral electrode capacitance sensor by the finite element software ANSYS, the simulation result shows that the sensor is sensitive to the content of metal abrasive particle in lubricating oil, not affect by the metal abrasive particle itself. According ...

• Multi-layer MXenes were used as solid lubricants coatings for rolling bearings. Comparison with molybdenum disulfide (MoS 2 ) and diamond-like carbon (DLC) coatings. Bearing washer wear was substantially reduced by MXene Transfer film formation verified on secondary contacts (rolling elements/cage pockets). Service life extension 30 55% compared to MoS DLC, respectively. Two-dimensional (2D) ...

Lubricant oil is used in hydropower units to minimize friction, improving the turbine efficiency and reducing wear. However, production a pollutant process, while eventual spills may affect water quality damage freshwater ecosystems. In this study, lubricant consumption of European fleet was estimated (considering its installed capacity 254 GW). The energy required extract process also based on...

Abstract Alternative fuels in diesel engines are getting attention due to the current world energy crisis. Biodiesel is a fuel where main composition from palm oil, it an alternative may can replace fossil fuels. However, use of biodiesel has several impacts on engine if its not maintained. The using usually results decrease lubricating oil viscosity and increases metal wear rate. This research...