セラミックス用フレッティング疲労試験装置の試作と窒化けい素を用いたフレッティング疲労試験結果

概要

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A fretting fatigue test machine for ceramic materials was designed and fabricated to investigate the fretting fatigue properties of ceramic materials. Fretting occurred at the contact surface between the rectangular specimen which was maintained under static fatigue conditions and the cylindrical contact piece. The major factors which affect the fretting fatigue prorerties such as relative slip amplitude and contact load can be controlled and their values can be measured in the test machine. Preliminary experiments were carried out using HIP sintered silicon nitride. Fretting reduced static fatigue strength of silicon nitride. Fretting damage was observed on the contact surface under small relative slip amplitude which never produced fretting damage in the case of metallic materials. Since fretting cracks are initiated at a very early stage of fatigue life, crack propagation life is domenant in fretting fatigue life.
一般社団法人日本機械学会の論文
1993-05-25