Here is Heavy Steel Rail Manufacturer talking about Axle fatigue test.
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There are many types of test stands, the main difference being the way in which lateral loads are applied.
Axle fatigue test usually uses a cantilever type rotary bending fatigue test bench to perform a 1:1 fatigue test on the part of the axle. In this way, not all cases can be directly tested with the physical axis, sometimes according to different tests. The axle part is made by the connection method of the part and the test bench. At this time, the type size and processing technology of the tested part of the axle should be made according to the physical axis. The test load is constantly applied to the cantilever end. Wheel Fatigue Test There are two domestic test methods for wheel fatigue testing.
The fatigue test of a single wheel is carried out using a structural fatigue test rig, the wheel is placed flat on the test rig, the rim side is upward, and the outer rim is supported by two points, and a pulsating load is applied to the inner end of the inner hub. This method is simple and easy, except that the wheel has a large difference between the force state and the actual application.
The second method is to use the entire wheel pair on the wheelset test bench. The track wheel of the test bench drives the test wheel pair to rotate, and the vertical load is applied to the axle journal, but the lateral load is difficult to apply. The inadequacies of this test method are also difficult to apply to higher values even for vertical loads due to the bearing life and load carrying capacity of the test bench.