A method of holographic interferometry which uses an amplitude-modulated reference wave
is proposed for investigating vibration phases. Sinusoidal amplitude modulation of a …

Computer image processing techniques for the measurement of vibration amplitude are
presented, which utilize phase-shifted time-average holographic interferograms. The …

It is shown that temporal modulation of the object and/or reference wave in holographic
interferometry can advantageously control fringe characteristics. The work presented is …

A fringe-evaluation system for a vibration measurement is presented, which is based on the
phase-shifting method in real-time holographic interferometry. Phase-shifted real-time …

Generally, both the phase and amplitude of vibration of an object's surface vary from point to
point. This paper details two methods for extracting vibrational phase information from the …

Common reconstructed fringes in holographic interferometry of vibration show rapidly
diminishing intensity with extended amplitude limiting the measurement range. Using …

Conventional holographic interferometry of vibrating objects yields reconstructed images in
which the radiance of each point is proportional to the square of the zero-order Bessel …

Instrument Design Development Centre, Indian Institute of Technology, New Delhi-110029,
India x(r, t) = Xo(r ) + A(r) sin (cot) Page 1 Volume 11, number 4 OPTICS …

Time-average hologram interferometry provides a very useful and accurate method for
studying vibrating objects.[1] Besides eliminating the need for sensing elements in contact …

The Netherlands Holographic interferometry [l] has been ap- plied to the study of flow
phenomena inside a re- action vessel with Page 1 Volume 2, number 6 OPTICS …