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Effect of Non-Operational Shock on Interaction Between Suspension Lift-Tab and Load/Unload Ramp

[+] Author Affiliations
Aravind N. Murthy, Frank E. Talke

University of California at San Diego, La Jolla, CA

Eric M. Jayson

ATA Engineering, Inc., San Diego, CA

Paper No. WTC2005-63558, pp. 709-710; 2 pages
doi:10.1115/WTC2005-63558
From:
  • World Tribology Congress III
  • World Tribology Congress III, Volume 1
  • Washington, D.C., USA, September 12–16, 2005
  • Conference Sponsors: Tribology Division
  • ISBN: 0-7918-4201-0 | eISBN: 0-7918-3767-X
  • Copyright © 2005 by ASME

abstract

Most hard disk drives manufactured in the last few years have Load/Unload (L/UL) technology. As opposed to the Contact Start/Stop (CSS) technology, L/UL technology has the advantage of improved areal density because of more disk space availability and better shock performance. The latter characteristic has significant benefits during the non-operational state of the hard disk drive since head/disk interactions are eliminated and the head is parked on a ramp adjacent to the disk. However, even if head/disk interactions are absent, other failure modes may occur such as lift-tab damage and dimple separation leading to flexure damage. A number of investigations have been made to study the response of the head disk interface with respect to shock when the head is parked on the disk ([1], [2]). In this paper, we address the effect of non-operational shock for L/UL disk drives.

Copyright © 2005 by ASME

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