Tape asperity compliance measurement using a pneumatic method

Author

Wang, Erik L. ; Wu, Yiqian ; Talke, Frank E.

Author_Institution

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

Volume

32

Issue

5

fYear

1996

fDate

9/1/1996 12:00:00 AM

Firstpage

3732

Lastpage

3734

Abstract

The effects of asperity compliance on the head/tape interface is investigated for various magnetic tapes with different surface roughness characteristics and structure. Laser interferometry is used to obtain the asperity compliance curves for each tape by relating spacing and contact pressure at the head/tape interface with the spacing and contact pressure between a glass optical flat and tape. The Greenwood-Williamson model for contact between rough surfaces is used to “curve fit” the experimental data. The effect of visco-elasticity on asperity compliance is investigated

Keywords

light interferometry; magnetic recording; magnetic tapes; surface topography; viscoelasticity; Greenwood-Williamson model; asperity compliance; contact pressure; curve fitting; glass optical flat; head/tape interface; laser interferometry; magnetic tape; pneumatic measurement; spacing; structure; surface roughness; viscoelasticity; Barium; Chromium; Distribution functions; Glass; Optical interferometry; Performance evaluation; Pressure measurement; Rough surfaces; Surface fitting; Surface roughness;

fLanguage

English

Journal_Title

Magnetics, IEEE Transactions on

Publisher

ieee

ISSN

0018-9464

Type

jour

DOI

10.1109/20.538819

Filename

538819