Vibration Measurement and Analysis Using Heterodyne Laser Detection

Authors

  • Mohammed A. Hussain Department of Laser and Optoelectronics Engineering, Nahrain University
  • Hussam M. A. MohamedSalih Department of Laser and Optoelectronics Engineering, Nahrain University

Keywords:

Vibration Measurement, laser heterodyne detection

Abstract

An experimental Michelson interferometer arrangement has been implemented utilizing the principle of laser Doppler vibrometry. He-Ne laser

has been used as a coherent light source. The circuit for heterodyne detection has been built to detect and record Doppler signals. Two types of

materials have been used as vibrating panel, which are excited by acoustic waves applied from a loudspeaker connected to a function generator.

The applied waves were in frequency range of 10- 100Hz. The recorded results of the experimental work demonstrate that the vibration frequency of

the panel conforms to the applied frequency when the ratio between the applied and natural frequencies is greater than two (or less than one

half).

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Published

03-03-2007

How to Cite

Vibration Measurement and Analysis Using Heterodyne Laser Detection. (2007). Al-Nahrain Journal for Engineering Sciences, 10(1), 65-71. https://nahje.com/index.php/main/article/view/487

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