We can't find the internet
Attempting to reconnect
Something went wrong!
Hang in there while we get back on track
Multifactorial criterion evaluation of lubrication efficiency and wear resistance of friction units operating under extreme operating conditions
Summary
Researchers proposed a multifactorial criterion-based approach to optimising lubricant formulations for friction units operating under extreme conditions, incorporating rheological properties and chemical composition to sustain micro-elastohydrodynamic lubrication and reduce wear. The framework integrates viscosity class selection, plasticity assessment, and lubrication mode criteria to prevent lubrication layer breakdown and extend component service life.
A new multifactor criterial approach to modifying lubricants by rheological properties and chemical composition is proposed in order to increase the lubricating ability of modified layers and wear resistance of friction units from the position of mixed lubrication conditions. Prevention of micro-EНD lubricating layer is achieved by a set of measures: implementation of stable micro-EHD lubrication by the criterion of lubrication mode; optimal viscosity class with an increase in the fraction of hydrodynamic pressure of modified layers relative to the contact pressure from micro-unevenness of rough surfaces by the pressure criterion; optimal type of lubricant by the rheological criterion; assessment of the appearance of a plastically deformed state by the criterion of plasticity; selection of the qualitative and quantitative chemical composition of active components in the lubricant to create durable modified layers with high structural adaptability and thermomechanical stability by the temperature criterion. A new concept for increasing lubricity and wear resistance for friction units operating in extreme operating conditions, using an appropriate criteria approach, takes into account: non-stationary friction conditions, the shape of local contact and friction kinematics, rheological properties of lubricating layers, contact temperature, and the composition of components in the lubricant
Sign in to start a discussion.
More Papers Like This
High-Temperature Solid Lubricants and Self-Lubricating Composites: A Critical Review
This review examined high-temperature solid lubricants and self-lubricating composites used in extreme conditions such as aerospace and metallurgy, covering material properties, mechanisms, and recent advances in reducing friction and wear at elevated temperatures.
Tribological Aspects of Rolling Bearing Failures
This review covers the tribology (friction and wear science) of rolling element bearings, discussing failure modes and how material fatigue drives bearing lifespan predictions. This mechanical engineering study has no relevance to microplastics or environmental health.
Vastness of Tribology and its Contribution for a Sustainable Development
This review organises the multidisciplinary field of tribology into six branches covering fundamental tribology, materials and lubricants, micro and nanotribology, industrial tribology, biotribology, and emerging frontiers, and examines its contributions to friction and wear reduction for sustainable development.
Modification of Frictional Surfaces of Bearings by Addition of Nanoparticle Compositions to Lubricants
Researchers studied the effects of nanoparticle additive compositions in lubricating oils on changes to the frictional surface structure and tribological characteristics of a steel-to-steel friction pair, using scanning electron microscopy to analyze surfaces after step-loading fatigue tests.
Nanofluids Minimal Quantity Lubrication Machining: From Mechanisms to Application
This review examines nanofluid minimum quantity lubrication as a sustainable machining technique that reduces environmental impact while maintaining manufacturing precision. The study summarizes the mechanisms and performance benefits of this approach across different materials, aiming to bridge the gap between laboratory research and factory-scale implementation.