What is Boundary Lubrication? Boundary lubrication describes situations where the applied load is primarily supported by contacting solid asperities, rather than a liquid lubricant. The boundary lubrication regime acts when the lambda ratio (the ratio […]
Variation of Viscosity with Pressure Primary purpose of any industrial lubricant is to maintain a satisfactory lubricating film in between contacting surfaces; and importance of viscosity to achieve this is univocally known in industrial maintenance […]
Temperature – Viscosity Relation Viscosity is a measure of a lubricating oil’s resistant to flow. It is well-known from Hydrodynamic Lubrication Theory that viscosity plays a central role in the lubrication regime encountered in the […]
What is surface fatigue? Surface fatigue is the failure on the top layer of a body due to repeated loading. It can be differentiated from other types as it only occurs on the surface. It […]
The Engine Bearing (Main Bearing) The internal combustion engine (piston engine) currently is still the most common engine used in automotive indutstry, even though the electric vehicles using electric vehicles are getting rapidly popular. Combustion […]
1. Introduction: Friction is the force that prevents layers of fluid, surfaces of solids and material components sliding against one another. The force which resists the relative lateral movement between two solid contacting surfaces is […]
What is Nanotribology? Nanotribology or molecular tribology is one of the most significant components of tribology which is concerned with atomic and molecular interaction at a nanoscale, occurring upon the frictional contact of materials or lubrication. […]
What is triboelectricity? Triboelectricity refers to the electrification of dissimilar objects or materials occurred due to the collision resulting in the phenomenal flow of electrons from one material to other balancing the potential difference. The […]
Roughness is known to be an important factor in friction, wear and related performance of the machine parts. It was shown recently that Power Spectrum Density (PSD) can be used as a metric to describe […]
Hertzian contact stress Hertzian contact theory is a classical theory of contact mechanics and is a very useful tool for engineers and researchers. Even though the derivation of the theory is relatively difficult, the final […]
