FATIGUE LIMIT PREDICTION OF A COMPRESSION FORK-PIN COUPLING OF A FRONT MOTORBIKE SUSPENSION UNDER FULLY REVERSED BENDING LOAD

Introduction. The fork-pin compression coupling of the front suspension of a motorbike is very important for the reliability and the safety of the vehicle. The failure of this component is very dangerous because it would make the vehicle unmanageable, and it could cause severe injuries to the driver. Therefore, the designer’s aim is to assure its reliability keeping at the same time the production costs low. One of the most important causes of failure is due to fatigue under fully reversed bending load. In this work, fatigu