Sliding Failure Model for Magnetic Head-Disk Interface

[+] Author and Article Information
P. A. Engel

Department of Mechanical Engineering, SUNY Binghamton, Binghamton, New York 13901

B. Bhushan

IBM Research Division, Almaden Research Center, San Jose, Calif. 95120-6099

J. Tribol 112(2), 299-303 (Apr 01, 1990) (5 pages) doi:10.1115/1.2920256 History: Received April 11, 1989; Online June 05, 2008


A mechanical model is presented for the “time to failure” of a sliding magnetic head-disk interface system. The principal physical variables include the sliding speed, surface topography, elastic mechanical properties, coefficient of friction, and wear rate. Surface protrusions, such as asperities and debris particles, induce impact and sliding encounters which represent a damage rate. Failure occurs when a specific damage rate, a characteristic for the system, is reached. Modeling uses a set of topographic parameters describing the changing, wearing surface.

Copyright © 1990 by The American Society of Mechanical Engineers
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