Vibration Measurement for Rotating Disk Using Contactless Laser Excitation

• MIYAMOTO Daisuke

  Division of Human Mechanical Systems and Design, Hokkaido University

• KAJIWARA Itsuro

  北海道大学 大学院工学研究院

• HOSOYA Naoki

  芝浦工業大学 工学部

Bibliographic Information

Other Title

• 非接触レーザー加振技術を用いた回転円板の実稼動時振動計測

Abstract

This paper proposes a contactless vibration testing system for rotating disks based on an impulse response excited by a laser ablation. High power YAG pulse laser is used in this system for producing an ideal impulse force on structural surface without contact. The contactless vibration testing system is composed of a YAG laser, laser Doppler vibrometer and spectrum analyzer. This system makes it possible to measure vibration characteristics of structures under operation, such as vibration measurement of a rotating disk. The effectiveness of this system is confirmed by experimental and theoretical analyses. In this paper, a platter of hard disk drive is employed as an experimental object. Vibration characteristics of a rotating and non-rotating platter are measured and compared with the results of theoretical analysis.

Journal

• TRANSACTIONS OF THE JAPAN SOCIETY OF MECHANICAL ENGINEERS Series C

  TRANSACTIONS OF THE JAPAN SOCIETY OF MECHANICAL ENGINEERS Series C 77 (784), 4402-4412, 2011

  The Japan Society of Mechanical Engineers

Keywords

• Vibration of Rotating Body
• Vibration of Continuous System
• Measurement
• Laser Ablation
• Impulse Response
• Impact Testing

Details

• CRID: 1390001206386340992
• NII Article ID: 130002051245
• DOI: 10.1299/kikaic.77.4402
• ISSN: 18848354
• ISSN: 03875024
• Web Site: http://www.jstage.jst.go.jp/article/kikaic/77/784/77_784_4402/_pdf
• Data Source:
  • JaLC
  • Crossref
  • CiNii Articles
  • KAKEN
• Abstract License Flag: Disallowed