本文介绍飞机及发动机中出现的微动损伤概况。飞机构件实验室实验中约有90％的破坏均发生在有微动环境处,微动作用使材料的疲劳强度降低了30～80％。本文还介绍了微动损伤的典型特征。 This article describes the fretting damage profile seen in aircraft and engines. About 90% of the damage in the airplane component laboratory experiments occurred in the fretting environment, and the micro-action reduced the fatigue strength of the materials by 30-80%. This article also describes the typical features of fretting damage.