Experimental study on head-disk interaction in ramp loading process

Author

He, Yuming ; Liu, Bo ; Zhu, Yaolong

Author_Institution

Dept. of Mech., Huazhong Univ. of Sci. & Technol., Wuhan, China

Volume

37

Issue

4

fYear

2001

fDate

7/1/2001 12:00:00 AM

Firstpage

1809

Lastpage

1813

Abstract

This paper presents results of experimental study on the head-disk interaction in ramp loading process. The experimental set-up consists of an optical interferometer-used to measure the flying height variation, a high sensitivity PZT force sensor-used to measure air bearing force history, and an AE sensor-used to monitor the head-disk contact. A head-gimbal assembly (HGA) with a suitable load/unload suspension and a pico-format slider (30%) were employed. Two samples, with different static attitude settings, were tested under different loading velocities. The effects of loading velocity and static attitude on the loading stability of the pico-slider are discussed

Keywords

force sensors; light interferometry; magnetic disc storage; magnetic heads; stiction; air bearing force; flying height variation; head-disk interaction; head-gimbal assembly; high sensitivity PZT force sensor; load/unload suspension; loading stability; loading velocities; optical interferometer; pico-format slider; ramp loading process; static attitude; static attitude settings; Assembly; Charge coupled devices; Force measurement; Force sensors; Helium; History; Monitoring; Optical interferometry; Optical sensors; Stability;

fLanguage

English

Journal_Title

Magnetics, IEEE Transactions on

Publisher

ieee

ISSN

0018-9464

Type

jour

DOI

10.1109/20.950975

Filename

950975