Abstract
The development of comparative holographic Moire interferometry is accelerated by the need for nondestructive evaluation. It is based on a comparison of a master and test objects and a visualization of the difference in the mechanical responses under identical loading condition. In this paper, the hybrid method of comparative holographic Moire interferometry and the two-refractive-index contouring technique are used to generate contour difference for two compared specimens. The interference pattern of the master and test specimens are superimposed by a reconstruction beam. Moire fringes, produced between the two interference patterns, outline the contour differences in the compared specimens. The proposed experimental approach provides an advantage that full knowledge of the optical arrangement during construction and reconstruction of the hologram does not have to be accurately available. A partial-spherical object and its rotated status were simulated as the master and test objects.
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