Passive-damping of the axial run-out for high speed rotating flexible optical disk using the idea of damping orifice

Abdelrasoul M.M. Gad, Yoon Chul Rhim

Research output: Contribution to journalArticle

Abstract

In the present work, the idea of damping orifice is applied so as to reduce the axial run-out of a high speed rotating flexible optical disk. A track or more of rectangular-edge orifices is inscribed in a rigid flat stabilizer near the outer region of the disk that exhibits large vibration amplitudes. The effects of the orifice geometry, number of orifices per track, and the number of tracks are investigated experimentally. The results from this study show that the introduced new design of the stabilizer can reduce the axial run-out of the disk at 10,000 rpm to within 10 μm over its entire span using two tracks of damping orifices near the disk rim. The study proved that the introduced orifices in the flat stabilizer effectively enhance the damping capability of the air-film to dissipate the vibration energy of the rotating disk.

Original languageEnglish
Article number08KC03
JournalJapanese journal of applied physics
Volume49
Issue number8 PART 3
DOIs
Publication statusPublished - 2010 Aug 1

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optical disks
orifices
Orifices
Damping
damping
high speed
vibration
rotating disks
Rotating disks
rims
Geometry
air
geometry
Air

All Science Journal Classification (ASJC) codes

  • Engineering(all)
  • Physics and Astronomy(all)

Cite this

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abstract = "In the present work, the idea of damping orifice is applied so as to reduce the axial run-out of a high speed rotating flexible optical disk. A track or more of rectangular-edge orifices is inscribed in a rigid flat stabilizer near the outer region of the disk that exhibits large vibration amplitudes. The effects of the orifice geometry, number of orifices per track, and the number of tracks are investigated experimentally. The results from this study show that the introduced new design of the stabilizer can reduce the axial run-out of the disk at 10,000 rpm to within 10 μm over its entire span using two tracks of damping orifices near the disk rim. The study proved that the introduced orifices in the flat stabilizer effectively enhance the damping capability of the air-film to dissipate the vibration energy of the rotating disk.",
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Passive-damping of the axial run-out for high speed rotating flexible optical disk using the idea of damping orifice. / Gad, Abdelrasoul M.M.; Rhim, Yoon Chul.

In: Japanese journal of applied physics, Vol. 49, No. 8 PART 3, 08KC03, 01.08.2010.

Research output: Contribution to journalArticle

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AU - Rhim, Yoon Chul

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