Measurement of modal damping by electronic speckle shearing interferometry

Wai On Wong, K. T. Chan

Research output: Journal article publicationJournal articleAcademic researchpeer-review

7 Citations (Scopus)

Abstract

A time-average electronic speckle shearing interferometer (ESSI) has been used for modal damping measurement. This is effected by a new fringe enhancement technique. The damping factor of a cantilever measured by using this technique agrees well with the value measured by using the accelerometer method. The study shows that time-average speckle interferometry can be used as a convenient tool for modal damping measurement.
Original languageEnglish
Pages (from-to)113-120
Number of pages8
JournalOptics and Laser Technology
Volume30
Issue number2
DOIs
Publication statusPublished - 1 Jan 1998

Keywords

  • Electronic speckle shearing interferometry
  • Modal damping
  • Vibration analysis

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Atomic and Molecular Physics, and Optics
  • Electrical and Electronic Engineering

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