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AE 신호를 이용한 HDD 슬라이더 공기베어링의 부상상태 측정
김재직,정태건,Kim, Jae-Jic,Jeong, Tae-Gun 대한기계학회 2001 大韓機械學會論文集A Vol.25 No.9
The AE measurement is one of the most convenient methods for detecting contacts between the slider and the disk. The AE method has been widely used in the investigation of the tribology of sliding interfaces due to its convenience. We examined the relationship between the AE signal and the flying height of a slider. We investigated the influence of the disk linear velocity on the AE rms signal by using the AE measurement system. The experiment also gives the relationship between the take-off velocity and the disk surface conditions. To investigate the behavior of the slider further, the variances of the AE signals are analyzed. The experimental results indicate that the increase in the magnitude of the AE rms signal does not necessarily mean the slider/disk contacts.