An investigation of the IBM 3380-K slider using laser Doppler interferometry

Author

Briggs, C.A. ; Talke, F.E.

Author_Institution

Center for Magnetic Recording Res., California Univ., San Diego, La Jolla, CA, USA

Volume

25

Issue

5

fYear

1989

fDate

9/1/1989 12:00:00 AM

Firstpage

3707

Lastpage

3709

Abstract

The dynamic characteristics of IBM 3380-K sliders are investigated using laser Doppler vibrometry, and the dependence of air bearing frequency on disk velocity, load, and yaw angle is studied. It is shown that vertical and pitch resonant modes are closely coupled and that the power in each of the modes changes with velocity or load. The measured resonant frequencies agree well with reported numerical predictions. A comparison is made with the dynamic behavior of conventional narrow-rail Winchester-type sliders. The comparison shows that the dynamic behaviors of both slider designs are very similar except for the substantially better damping properties of the IBM 3380-K slider

Keywords

Doppler effect; light interferometry; magnetic disc storage; magnetic heads; measurement by laser beam; resonance; IBM 3380-K slider; air bearing frequency; damping properties; disk velocity; dynamic characteristics; laser Doppler interferometry; load; magnetic head slider; mode coupling; pitch resonant modes; resonant frequencies; vertical resonant mode; vibrometry; yaw angle; Degradation; Frequency; Interferometry; Laser beams; Laser excitation; Magnetic recording; Power lasers; Rails; Vibrometers; Winches;

fLanguage

English

Journal_Title

Magnetics, IEEE Transactions on

Publisher

ieee

ISSN

0018-9464

Type

jour

DOI

10.1109/20.42408

Filename

42408