Investigation of machining behavior of Polyether Ether Ketone in Single grit scratch test

The Single grit scratch test is one of the first experiments for the fundamental recognition of the behavior of the material and the mechanism of chip formation under the grinding process. In this Test, a grit as an agent of the grinding wheel, is involved with the workpiece. The interpretation of its results makes a significant contribution to the understanding of the grinding behavior of this material, and the mechanism of cutting. Polyether ether ketone has been considered for its unique mechanical and chemical properties in aerospace and medical engineering. One of its applications is the construction of implants in the medical industry. In this study, the effect of uncut chip thickness has been studied on the mechanism of chip formation of the Polyether ether ketone. Several tests were carried out at different depths (starting from 1 μm) and different cutting speed (5, 10 and 15 m/s). By increasing the cutting speed, a higher specific energy is required and the amount of energy at a maximum depth would be 2.5 j/mm3.