time-average holographic interferometry

time-average holographic interferometry

[′tīm ¦av·rij ¦häl·ə¦graf·ik ‚in·tər·fə′räm·ə·trē]
(optics)
The study of holograms of a vibrating surface which have been averaged over time; illumination of such a hologram yields an image of the surface on which are superimposed interference fringes which are contour lines of equal displacement of the surface, enabling vibrational amplitudes of the surface to be measured with precision.
References in periodicals archive ?
The hybrid numerical-experimental investigation included the following tasks: (a) to investigate the vibrating piezoelectric transducer using time-average holographic interferometry; (b) to compose the numeric model of piezoelectric transducer and (c)--to investigate it by using eigenfrequency analysis.
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