14th International Conference on Shot Peening

Characterization Of Blasted Surfaces With Mesh-Based Parameters

Stefanie Stöckela, Sophie Grögera, Frank Segel

Chemnitz University of Technology, Professorship of Production Measuring Technology, Reichenhainer Str. 70, 09126 Chemnitz, Germany, Stefanie.stoeckel@mb.tu-chemnitz.de

Introduction

To study the effect of manufacturing processes or the function, e.g. wear behaviour or optical appearance, the geometrical microstructure can be characterized. The new ISO 21920-2 in 2D and the ISO 25178-2 in 3D offer parameters to assess the properties of surfaces. Many of these parameters are based on the evaluation of amplitudes. In the context of blasted surfaces it can be useful to record the distribution of areal surface characteristics and gain information about the homogeneity.

Objectives

This paper presents an approach for the determination of surface parameters based on a calculated mesh for identified features. The distribution parameters resulting from the mesh are used to assess the homogeneity of the feature distribution on the surface. (fig. 1)

Figure 1: a) Surface with identified feautures b) extracted point-cloud c) meshed point-cloud