Abstract
In order to study effect of load velocity on scratch test, scratch test were carried out with three different conditions on two scratch directions with Berkovich indenter. In the case that the edge of indenter was front, damage of interface was observed at 0.4mN〜0.6mN. In another, the critical load was nearly 1.2mN and was not connected with load velocity. In order to elucidate damage evolution of interface, we examined stress distribution on interface by FEM analysis. Stress concentrated on an edge of indenter. Therefore load value to be necessary for damage of interface is different in scratch direction.
