Characterization of surface topography with Abbott Firestone curve
Contemporary Engineerng Sciences
The Abbott Firestone curve is an important method of surface characterization, especially when working with surfaces where it is necessary to introduce specific characteristics related to surface integrity and functional requirements for certain applications, an example of which is the interior walls of internal combustion engines, where specific tribological characteristics are sought, characterized by the distribution of peaks and valleys. These characteristics are not easily visible with the
... ly visible with the values of roughness parameters such as Ra or Rz, as the parameters are synthetic and do not provide information on the nature of the surface. The Abbott Firestone material percentage curve is, therefore, a suitable procedure for this purpose. When looking to characterize surfaces, measurements are taken at different points to obtain representative average values of the measurements, this implies for the case of surface characterization by Abbott Firestone curves, averaging different curves of each of the measured profiles to obtain an average curve. Due to the nature of the distribution of the peaks and valleys of the surface topography, each curve represents a particular distribution of peaks and valleys of the point where it has been measured, with its respective midline, this makes the process of averaging the values of each curve complex to obtain a single characteristic curve for measurements made on the surface. The curve comparison method proposed here serves this purpose, and it has also been found to be very useful, for example, for calculating the wear that a surface has suffered, as in the case of the interior walls of cylinders in internal combustion engines, hydraulic cylinders, or in controlled material starting processes, as in the case of plateau honing machining where the 3398 Milton Coba Salcedo et al. aim is to cut the peaks of the roughness profile at a certain height without modifying the valleys.