Comparing the Effectiveness of R and S Roughness Parameters on Surfaces Lubricated with Standardized Nominal Particle Size Lubricants

L. Mendieta-Echevarría, M.A. Sáenz-Nuño, E.M. Rubio

Lubricants Vol. 13, nº. 4, pp. 148-1 - 148-48

Summary:

The aim of this article is to simulate the distribution of oil or lubricants on the surface by the characterization of the R and S roughness parameters. It is considered that undesirable particles may appear in the oil due to friction, the wear of parts, or dirt in the lubrication circuit. One of the problems that can generate the appearance of particles in the oil is the poor distribution of this along the surface, using standards, standardised particle sizes, and following the standard. This research aims to implement effective algorithms for the calculation of profile and surface roughness parameters following existing standards, as well as the development of a morphological filter that will simulate particles on the surface. The analysis of the surface roughness of the surface in contact with the lubricant can help to decide the maximum particle size that is permissible in the system; therefore, analysing the oil will help to decide when it is necessary to filter or replace that lubricant. This research is carried out form the geometrical point of view of the morphological filter effect. This paper represents a first approach to researching the calculation of all standardized profile and surface roughness parameters. As a result, only a selection of parameters has been chosen from the full range of available ones, in order to improve effectiveness.

Spanish layman's summary:

Este estudio implementa algoritmos efectivos para calcular los parámetros de rugosidad del perfil y la superficie, y desarrolla un filtro morfológico que simula partículas en la superficie. 

English layman's summary:

This study implements effective algorithms to calculate profile and surface roughness parameters, and develops a morphological filter that simulates particles on the surface.

Keywords: roughness parameter; morphological filter; metrology; surface roughness parameter; profile roughness parameter; roughness areal parameter

JCR Impact Factor and WoS quartile: 3,100 - Q2 (2023)

DOI reference: https://doi.org/10.3390/lubricants13040148

Published on paper: April 2025.

Published on-line: March 2025.

Citation:
L. Mendieta-Echevarría, M.A. Sáenz-Nuño, E.M. Rubio, Comparing the Effectiveness of R and S Roughness Parameters on Surfaces Lubricated with Standardized Nominal Particle Size Lubricants. Lubricants. Vol. 13, nº. 4, pp. 148-1 - 148-48, April 2025. [Online: March 2025]