Tribology Wiki


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Fatigue Surface Crack

Rolling Contact Fatigue

Rolling-contact fatigue (RCF) is defined as a failure or material removal driven by crack propagation caused by the near-surface alternating stress field.  It is typically considered that if a bearing is properly mounted, aligned, lubricated, […]

Fatigue Wear

Fatigue Wear

Fatigue wear is a type of wear where a number of cycles is needed to generate debris. The fatigue process in metals may induce the generation of surface and subsurface cracks, which after a critical […]

Wear Particle Image

Wear Particles

The wear process results in generation of debris, or particles, of various size, shape, color distributions and chemical composition[1, 2, 3]. These distributions are dependent on normal load, sliding speed, environment and many other parameters[4]. […]

Corrosive Wear

Corrosive Wear

Corrosive wear occurs when the component operates in a corrosive media, liquid or gas [1, 2]. In this type of wear, the tribochemical reaction between corrosive agent and the bulk material generates a reaction (protective) […]

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Abrasive Wear

Abrasive wear occurs when a hard surface or hard particles pass over a soft surface, causing loss of material [1]. However, the abrasive grooves can be found on the wear tracks of the sliding friction […]

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Adhesive Wear

Adhesive wear occurs when two solids are in a sliding contact and the atomic bonding forces occurring between the materials on the interface are stronger than the strength of the surrounding area in either of […]

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Wear

Definition Wear is defined as a surface damage of one or all solid surfaces in contact subject to relative motion. Wear might have different patterns corresponding to various wear mechanisms. A surface can be subject […]

Da Vinci Tribology

Friction

  Friction Definition Friction is a force acting opposite to the direction of relative motion. Friction rises on the interface between bodies, but may also develop within the body.Examples of the latter include air and […]