Proof of wheel fasteners by multiaxial tests in the biaxial wheel test rig

The complex design and loading conditions of the wheel-hub assembly and decisive safety demands make it necessary to proof the wheel fasteners under reliable, service-like testing conditions. In this paper main parameters, the function and fatigue life of wheel fasteners and consequences for testing are described and discussed. The test procedure is based on the Biaxial Wheel Test Method, whereby the existing load program "Eurocyclex" was extended by additional braking and torsional force sequences. The test requirement and some typical test results are presented.