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Tribology is the science and engineering of understanding friction, lubrication and wear phenomena for interacting surfaces in relative motion. It is highly interdisciplinary, drawing on many academic fields, including physics , chemistry , materials science , mathematics , biology and engineering . [ 1 ]
Tribology is the science and engineering of interacting surfaces in relative motion. It includes the study and application of the principles of friction, lubrication and wear. It includes the study and application of the principles of friction, lubrication and wear.
The Stribeck curve is a fundamental concept in the field of tribology.It shows that friction in fluid-lubricated contacts is a non-linear function of the contact load, the lubricant viscosity and the lubricant entrainment speed.
The study of wear and related processes is referred to as tribology. Wear in machine elements, together with other processes such as fatigue and creep, causes functional surfaces to degrade, eventually leading to material failure or loss of functionality. Thus, wear has large economic relevance as first outlined in the Jost Report. [1]
The progression of the humanity suggested new technologies, devices, materials and surface treatments which required novel lubricants and lubrication systems. Likewise, the development of high-speed trains, aircraft, space stations, computer hard discs, artificial implants, and bio-medical and many other engineering systems, have only been possible through the advances in tribology.
Nanotribology is the branch of tribology that studies friction, wear, adhesion and lubrication phenomena at the nanoscale, where atomic interactions and quantum effects are not negligible. The aim of this discipline is characterizing and modifying surfaces for both scientific and technological purposes.
The steady-state wear equation was proposed as: [2] = where is the Brinell hardness expressed as Pascals, is the volumetric loss, is the normal load, and is the sliding distance.
Nikolai Pavlovich Petrov's method of lubrication analysis, which assumes a concentric shaft and bearing, was the first to explain the phenomenon of bearing friction.This method, which ultimately produces the equation known as Petrov's Law (or Petroff's Law), is useful because it defines groups of relevant dimensionless parameters, and predicts a fairly accurate coefficient of friction, even ...