Abstract
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 Al2O3TiC 50 percent slider are in excess of 600 KHz.
Issue Section:
Research Papers
1.
Kita, T., Kogrue, K., Mitsuya, Y., and Nakaishi, T.,
1980 “New Method of Detecting Contact Between Floating-Head and Disk,”
IEEE Transactions on Magnetics, Mag-15, No. 5, pp.
873–875.
2.
Yeack-Scranton, C. E., 1986 “Novel Piezoelectric
Transducers to Monitor Head-Disk Interactions,” IEEE Transactions on
Magnetics, Mag-22, No. 5, pp. 1011–1016.
3.
Jeong
T.
G.
Bogy
D.
B.
1989
,
“Natural Frequencies of Sliders and Transducers Used to
Detect Slider-Disk Contacts
,” IEEE Transactions on
Magnetics
, Vol. 25
, No. 5
, pp.
3725
–3727
.4.
Briggs
J.
C.
Chang
M.
Tse
M.
1992
, “High Frequency Slider Vibrations During
Asperity Impacts in Rigid Magnetic Disk Systems
,”
Advances in Information Storage Systems
, Vol.
4
, pp.
181
–194
.
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