The surface properties of a machined part have a significant impact on its performance during use, particularly for demanding applications in the aerospace, automotive and bearing industries. Surface damage, a poor surface roughness, residual stresses or sub-layer deformation can adversely affect the part’s fatigue life. This surface quality is closely related to the cutting-edge geometry, tool wear, and cutting, cooling and lubrication conditions during machining.
A better understanding of the thermo-mechanical loads transferred to the machined and ground surfaces, combined with in-depth and multi-scale characterisation of surfaces, provides essential guidelines in meeting the targeted performance of the machined parts.
MCR has led numerous initiatives in this area, particularly in machining and grinding of steels and titanium alloys.