Process monitoring and metrology for single grit grinding test performance

Single grit scratch test may provide better understanding of complex material removal mechanism of grinding process on the micro scale. In this paper, evaluation of single grit scratches was performed by utilizing monitoring and metrology devices. Particularly, AE and force sensors were used to monitor the process. AE sensitivity on material deformation was found comparable to force sensor sensitivity. High contact area interaction result in increase of AE raw signal amplitude. Grit cutting edge wear phenomena was also investigated under the digital microscope. Multiple scratches formation was observed in one rotation, due to grit cutting edge wear. AE sensitivity on scratch tests and grit wear are investigated in this paper to provide more insight into grinding process monitoring and material removal mechanism by single grit approach.