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Optics Letters

Optics Letters


  • Vol. 21, Iss. 4 — Feb. 15, 1996
  • pp: 296–298

Bending vibration measurement on rotors by laser vibrometry

Toby Miles, Margaret Lucas, and Steve Rothberg  »View Author Affiliations

Optics Letters, Vol. 21, Issue 4, pp. 296-298 (1996)

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A new technique is proposed for noncontact measurement of bending vibration directly from a rotating component. This notoriously difficult and previously unattained measurement is a further development of laser Doppler vibrometry. Simultaneously the technique provides an accurate measure of shaft torsional vibration in situations in which measurements of torsional vibration have shown significant sensitivity to bending vibration. Experimental results validate the theory developed, and a conservative estimate of the minimum measurable bending vibration is made at 20 millidegrees.

© 1996 Optical Society of America

Original Manuscript: September 13, 1995
Published: February 15, 1996

Toby Miles, Margaret Lucas, and Steve Rothberg, "Bending vibration measurement on rotors by laser vibrometry," Opt. Lett. 21, 296-298 (1996)

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  1. L. E. DrainThe Laser Doppler Technique (Wiley, Chichester, UK, 1980), pp. 222–225.
  2. S. J. Rothberg, N. A. HalliwellTrans. ASME: J. Vibration Acoust. 116, 326 (1994). [CrossRef]
  3. N. A. Halliwell, C. J. D. Pickering, P. G. EastwoodJ. Sound Vibratio 93, 588 (1984). [CrossRef]
  4. T. J. Miles, M. Lucas, S. J. Rothberg, presented at ASME 15th Biennial Conference on Vibration and Noise, Boston, Mass., September 17–21, 1995.
  5. M. Kinoshita, T. Sakamoto, H. Okamurain SAE Transactions, Section 3 (Society of Automotive Engineers, Warrendale, Pa., 1989), paper 891127, pp.1605–1615.

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