Utilisation_of_Holographic_Interferometry

3.7 Utilisation of Holographic Interferometry

Holographic interferometry is an optical imaging method that enables us to investigate with high sensitivity and precision the displacements and deformations on the surface of real objects, to study vibrations, small displacements of objects, to visualise physical fields. We do not consider only the immediate visualisation, but also the permanent display of the field that is later possible to analyse.

Holographic interferometry mutually compares two information waves that originally did not exist at the same time. Thereby a qualitatively new possibility is created to take into account the influence of another independent dimensional parameter – time variable during the measurement.

To introduce holographic interferometry to research institutes, construction mechanics and wood-working industries a higher professional standard of personnel is requested to ensure the operation of their experimental laboratories. Moreover, sophisticated multifunction experimental equipment is needed to reduce the investments (Siklienka, Svoreň, 1997).

The utilisation of holographic interferometry as a quantitative measuring and non-contact diagnostic method requires continual elaboration of measurement methods to analyse the obtained information. New applications of holographic interferometry request a specific approach and, in majority of cases it is possible to consider it to be an original method.