Abstract
In order to investigate the effect of the contact pad geometry on fretting fatigue strength, the fretting fatigue tests and interrupted fretting fatigue test by using two types bridge pad with the contact edge chamfered and non-chamfered were carried out for Ni-Cr-Mo steel. In this paper, the fretting fatigue test was conducted with; a stress ratio R=0.05,a contact pressure P=200Mpa. The main features in this study are as follows : the fretting fatigue strength increased by using bridge pad with the contact edge chamfered, and the interrupted fretting fatigue tests showed that crack initiation behavior was affected by the shape of contact edge in the fretting fatigue.
