RESEARCH AND ANALYSIS ON DAMAGE OF FRETTING WEAR AND FRETTING FATIGUE FOR COMPONENTS IN NPPs

摘要

In this paper, from the point of view of study and analysis on fretting wear and fretting fatigue mechanism of materials, the main differences between fretting fatigue and ordinary fatigue are summarized; further more, the damage reasons on a component in a NPP are analyzed and semi-quantitative relationship between fretting fatigue and ordinary fatigue for the component material is obtained to provide with referenced basis for structural improvement and failure analysis on original structure.