STUDY OF VIBRATION FORMS OF GTE ELEMENTS BY METHODS OF HOLOGRAPHIC INTERFEROMETRY IN REAL TIME

M.R. Tkach, J.G. Zolotoi, D.V. Dovgan, I.J. Zhuk

The experimental determination of dynamic parameters of GTE elements using holographic vibrometry in real time are consider. The influence of parasitic interference fringes is excluded and recovery modes of vibration is carried out according to the computer by scanning photometry interferograms strobe pulse phase of the mechanical vibrations. The method of interferogram digitization allows without reference to the zero fringe and to determine the spectrum of natural frequencies and modes of vibration of construction using one reference hologram is presented.

Key words: decoding holographic interferograms, GTE blade, strobogolografic vibrometry, self-resonant frequency, the vibration forms.