We analyze the basic principles and features of the digital recording and reconstruction of holographic images and interferograms. The advantages and disadvantages of digital interferograms are presented in comparison with the classical analog interferograms. The main requirements to the parameters of software and hardware for digital holographic interferometry are indicated. Examples of practical application of the digital holographic interferometry for analyzing various vibrations under both laboratory and industrial conditions are given. A number of new high-efficiency methods for performing vibrational measurements and analyzing multicomponent free and coupled oscillations and impact vibrational excitations are described, and examples of a particular realization with presentation of the results in the form of computer dynamic animation visualization (three-dimensional representation in time) are given. Promising methods of vibrational measurements related to the programmed multiframe recording and subsequent multifunctional analysis of the recorded data array with animation of the results are proposed.
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Translated from Izvestiya Vysshikh Uchebnykh Zavedenii, Radiofizika, Vol. 57, No. 8–9, pp. 608–616, August–September 2014.
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Gusev, M.E., Alekseenko, I.V. A Study of Multicomponent Mechanical Oscillations by the Method of Digital Holographic Vibrometry. Radiophys Quantum El 57, 543–550 (2015). https://doi.org/10.1007/s11141-015-9537-x
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DOI: https://doi.org/10.1007/s11141-015-9537-x