A study on fatigue test of soundproof wheels

초록

Noise occurs due to the interaction between wheels and rails when railway vehicles run. Soundproof wheels could reduce this type of radiated noise, and, with this paper, we have evaluated the durability of wheel dampers based on rolling contact fatigue test. We have also gone through a test by applying loads that occur while driving a vehicle such as vertical force and lateral force to the wheel damper so that stresses could be generated on the wheels. As a result of a verification on the safety of processing wheels and assembling bolts, we have found out that regular bolts and nuts were loosened at 200,000 times of load cycle. We have continued tests using self-locking nuts, and presented durability test results after non-destructive and visual inspections with the application of 2million times of load cycle.