Title :
Identification of slider/disk contacts using the energy of the acoustic emission signal
Author :
McMillan, Thomas C. ; Talke, Frank E. ; Harrison, Joshua C.
Author_Institution :
Center for Magnetic Recording Res., California Univ., San Diego, La Jolla, CA, USA
fDate :
7/1/1998 12:00:00 AM
Abstract :
The take-off behavior of typical tri-pad and sub-ambient pressure tri-pad sliders is investigated using acoustic emission (AE) measurements. The relative energy of the torsional and bending mode frequencies in the AE signal is determined as a function of velocity. The change in energy in the AE signal corresponding to the torsional and bending modes of vibration of the slider is found to be associated with the change in the contact location between slider and disk from the side rails to the trailing edge
Keywords :
acoustic emission; hard discs; magnetic heads; mechanical contact; tribology; vibrational modes; acoustic emission signal; bending mode frequencies; contact location; energy; hard disks; magnetic heads; side rails; slider/disk contacts; sub-ambient pressure tri-pad sliders; take-off behavior; torsional mode frequencies; trailing edge; tri-pad sliders; velocity; Acceleration; Acoustic emission; Acoustic measurements; Frequency; Magnetic recording; Pressure measurement; Rails; Rough surfaces; Signal processing; Surface roughness;
Journal_Title :
Magnetics, IEEE Transactions on
