액체질소 실험을 위한 예냉 과정 중 뉴매틱 해머에 의한 하이브리드 베어링의 파손에 관하여

Abstract

This study shows the effect of a pneumatic hammer generated during the pre-cooling process for the liquid nitrogen experiments in the hybrid bearing. In a non-rotating condition of the rotor-bearing system supported on the hybrid bearing, pneumatic hammer is notable during a pre-cooling process. The pneumatic hammer renders continued contact pressure and frictional heat between the bearing and the rotor surfaces, thereby enabling adhesive wear.