Vibrations of composite material beam and shaft - laser vibrometer vs accelerometer

This paper presents a comparative study between accelerometer and laser vibrometer measurements aimed at quality measurements carried out on composite material shaft and beam. The experiments have been carried for different number of layers and fiber orientation of composite material beam. Results indicate the great influence of fiber orientation on the natural frequency of the beam. The measurements of laser are much clearer than that of the accelerometer. And other advantages of the laser vibrometer are checked while studying the vibrations of composite shaft.