窒化けい素のフレッティング疲労特性に及ぼす相対すべり振幅の影響

抄録

Fretting fatigue tests were carried out using HIP-sintered silicon nitride to study the effect of relative slip amplitude between the specimen and the contact piece on fretting fatigue behavior. Fretting fatigue strength decreased with increasing relative slip amplitude. Application of static contact without fretting motion had no influence on static fatigue strength. Therefore, fretting action with relative slip will be essential to the degradation of fatigue strength. Fretting fatigue life prediction based on the fracture mechanics analysis was also carried out, where the frictional force between the specimen and the contact piece was taken into consideration. The predicted fretting fatigue lives agreed well with the experimental results.