Summary
The use of holographic interferometry for the measurement of large deformations is described. From the nature of holographic interferometry it is evident that large deformations exceed the wave length of the light source used by at least ten times of this size. To obtain holographically identifiable values of large deformations, a method of successive partial lighting is used. It shows how it is possible to keep all the advantages of the holographic method and use it even under conditions which apparently exceed its possibilities of application.
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References
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Zemánek, Z., Hampl, P., Rudiš, M.: Obtaining time-dependent holographic interferograms by partial lighting method (in Czech). Jemná mechanika a optika29, 319–321.
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Zemánek, Z. Large deformation measurement by holographic interferometry. Acta Mechanica 115, 151–159 (1996). https://doi.org/10.1007/BF01187435
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DOI: https://doi.org/10.1007/BF01187435