# Effect of Simulated Mechanical Filtration by the Stylus Tip on Changes in the Parameters of Areal Surface Texture

## TL;DR

This study examines how using a stylus tip to measure surface textures can distort the results, especially for rougher surfaces.

## Contribution

The novelty lies in simulating stylus tip filtration effects on 3D surface textures and quantifying their impact on texture parameters.

## Key findings

- Stylus tip filtration reduces amplitude and hybrid parameters and peak curvature radius.
- Surface skewness and kurtosis changes depend on surface type.
- Furrow depth and density decrease with stylus tip filtration.

## Abstract

The objective of this work was to study distortion of the 3D surface textures measurement using the stylus tip technique. This distortion was simulated using a dilation procedure. Topographies of many machined surfaces of various characters measured using a white light interferometer were analysed. The growth in the tip of the radius of the stylus produced larger changes in surface texture. Mechanical filtration by a stylus tip caused a reduction in the amplitude parameters, hybrid parameters, and average radius of the peak curvature. Variations in skewness (Ssk) and kurtosis (Sku) depended on the type of surface. The depth and density of the furrows had a tendency to decrease. The measurement results were more distorted for a higher roughness amplitude and a smaller main wavelength.