Head/Disk Interface Contact Detection Using a Refined Acoustic Emission Technique

[+] Author and Article Information
K. O’Brien, D. Harris

Quantum Corporation, 2270 South 88th Street, Louisville, CO 80028

J. Tribol 118(3), 539-542 (Jul 01, 1996) (4 pages) doi:10.1115/1.2831571 History: Received February 21, 1995; Revised July 15, 1995; Online January 24, 2008


A refined technique using Acoustic Emission has been developed for use in head/disk interface contact detection. These refinements are focused on the design parameters of the Acoustic Emission electronics, amplification and filter settings, which permit accurate and repeatable contact detection measurements. A technique for determining the slider body natural frequencies is described in order that the proper filter design parameters can be determined. Experiments confirm the existence of these frequencies for a Al2 O3 TiC 50 percent slider are in excess of 600 KHz.

Copyright © 1996 by The American Society of Mechanical Engineers
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