Detecting oscillation amplitude and defects of hard disk rotating in high speed by laser Doppler technique

Zhu, Shaoli, Zhou, Wei and Song, Yunfeng (2012) Detecting oscillation amplitude and defects of hard disk rotating in high speed by laser Doppler technique. Measurement, 45 1: 74-78. doi:10.1016/j.measurement.2011.09.021


Author Zhu, Shaoli
Zhou, Wei
Song, Yunfeng
Title Detecting oscillation amplitude and defects of hard disk rotating in high speed by laser Doppler technique
Journal name Measurement   Check publisher's open access policy
ISSN 0263-2241
1873-412X
Publication date 2012-01
Year available 2011
Sub-type Article (original research)
DOI 10.1016/j.measurement.2011.09.021
Volume 45
Issue 1
Start page 74
End page 78
Total pages 5
Place of publication Amsterdam, Netherlands
Publisher Elsevier
Language eng
Abstract Laser Doppler technique is widely used in industry for the purpose of detecting vibration and oscillation. Many researchers have found that using non-contact laser vibrometry to measure surface roughness of disk under dynamic status is more difficult than that of the static condition. In this paper, we proposed a laser Doppler technique for the purpose of measuring the oscillation amplitude and defects of hard disk rotating in high speed. Laser light source, optical Doppler system, detector and data process system were integrated in our experimental system. The whole system was calibrated using a sinusoid generator. The method for converting the measured voltage signals into the corresponding size data was described in detail. It was found that the average size of defects of the hard disk in our experiment is from 1 μm to 5 μm. The developed technique may be useful for quality control in real time in mass production processes.
Keyword Doppler
Oscillation
Laser
Hard Disks
Laser Doppler technique
High rotating speed
Hard disk
Amplitude
Defect
Q-Index Code C1
Q-Index Status Provisional Code
Institutional Status Non-UQ
Additional Notes Published online 29 September 2011

Document type: Journal Article
Sub-type: Article (original research)
Collection: Australian Institute for Bioengineering and Nanotechnology Publications
 
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Created: Wed, 18 Sep 2013, 11:26:21 EST by Cathy Fouhy on behalf of Aust Institute for Bioengineering & Nanotechnology