抄録
When the traffic machine in motion such as automobile or aircraft collides with rigid wall, it is necessary to carry out safer design for the collision. In order to improve the collision safety, sliding and deformation behavior in the collided contact surface for a structural member has been required. Therefore, in the study, friction coefficient was measured by measured by measuring system using drop hammer impact test machine, the velocity dependence of friction coefficient was examined by measurement at the various moving velocity as dynamic characteristic.