slijtagevolume

Slijtagevolume is a Dutch-term referring to the volume of material removed from a surface due to wear in a tribological contact. It is a quantitative measure of wear and is typically denoted V, expressed in cubic millimeters (mm^3). In practice, slijtagevolume can be determined directly by measuring surface removal with profilometry or 3D scanning, or indirectly from mass loss Δm using V = Δm/ρ, where ρ is the material density.

The value of slijtagevolume depends on factors such as sliding distance, contact area, applied load, material hardness, and environmental conditions. A widely used model is Archard's law, which states V = k * (L*A)/H, where k is the wear coefficient, L is the total sliding distance, A the apparent contact area, and H the hardness of the softer material. The wear rate w = dV/ds or dV/dt expresses how quickly material is removed per unit distance or time. In testing, common methods include pin-on-disk, block-on-ring, and thrust bearing wear tests.

Applications of slijtagevolume include assessing the durability of components such as bearings, gears, cylinder liners, and seals. Lubricants, coatings, and surface treatments can reduce slijtagevolume by lowering the wear coefficient or altering contact conditions.

Limitations: real-world wear can deviate from simple models, and the term is primarily a measurement concept rather than a universal constant. Etymology: Dutch, where slijtage means wear and volume denotes volume. See also: tribology, wear, Archard’s law, wear coefficient, profilometry.