In his dissertation ‘Potential of mechanical process effects in finish machining’, Mr. Eich aimed to improve the surface and subsurface properties of machined workpieces using grinding technology. His central hypothesis was that tools with spherical grains in elastic bonding generate higher mechanical loads, which lead to favourable material modifications. This innovative tool concept had not previously been tested industrially or scientifically investigated. The research was conducted at the SFB TRR136 Process Signatures and in a transfer project in cooperation with Artifex.

Mr. Eich's work showed that spherical ceramic and steel grains induce beneficial compressive stresses to a depth of 200 µm and cause grain refinement. Steel spheres also led to better surface roughness due to plastic deformation and wear. He also investigated the influence of key control variables.

With his doctoral thesis, Mr. Eich did pioneering work in process technology. His methodologically sophisticated results can increase the strength and load-bearing capacity of components, extend their service life and contribute to lightweight construction.