The movements in the contact surface of tires have a great influence on the transferable forces, noise and wear. With the help of the measuring device proposed here, the movements in the contact surface should be recorded under the action of all tire forces (vertical, longitudinal, transverse) and at almost all speeds. It should also be possible to investigate the behaviour of aquaplaning
A tire drum is used, similar to what is already in use today.The tire is pressed against the rotating drum with the desired wheel load and can also be operated with inclined running or circumferential slip if necessary. In the present drum, however, a transparent hollow cylinder is used. On the opposite side of the tire, a flash of light microscope and/or a camera is arranged.
Alternatively, only one angular element of the drum can be made transparent. In this case, recordings are only taken during stationary scanning when the wheel rolls over the transparent area. This can be useful for larger drum diameters for cost reasons.
It is also conceivable that the drum is watered so that aquaplaning processes occur. This irrigation is cheaper with internal drum test benches because there is less splashing water and the adjustment of the water film thickness is easier.