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In this paper, the mathematical expressions for the three-dimensional displacements of an object by holography are given. The authors derive the general equations for strain and stress using sandwich hologram interferometry. The method has been verified experimentally.
Lingli Wang andJingtang Ke
"Three-Dimensional Displacements By Sandwich Holographic Interferometry", Proc. SPIE 0952, Laser Technologies in Industry, (16 January 1988); https://doi.org/10.1117/12.968827
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