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Optical measurement techniques for full-field analysis of deformation, strain and vibration are commonly used in various
fields of mechanical engineering. The focus of this presentation is on the recent developments and applications of the
Electronic Speckle Pattern Interferometry (ESPI) and Digital Image Correlation (DIC) technique. The full-field function
allows an easy understanding of processes and designs under various conditions and their optimizations.
We present a brief overview about recent applications of ESPI for the determination of static strain in composite and
inhomogeneous materials and the use of the technique for optimization of the design of components in automotive
applications. DIC techniques have proven to be a flexible and useful tool for deformation analysis. Modern algorithm
and computer allows the calculation of the full-field three-dimensional displacement and strain in real-time. This
information can be converted to an electronic analog signal and be used for the real-time monitoring of the test. Using
High Speed cameras the DIC technique can be applied to vibration problems and a high resolution in the temporal
domain can be achieved. Different types of loading, like harmonic, shock or noise excitation, are applicable.
Thorsten Siebert,Hans-Reinhard Schubach, andKarsten Splitthof
"Recent developments and applications
for optical full field strain measurement using ESPI and DIC", Proc. SPIE 7997, Fourth International Seminar on Modern Cutting and Measurement Engineering, 79972B (26 May 2011); https://doi.org/10.1117/12.891864
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Thorsten Siebert, Hans-Reinhard Schubach, Karsten Splitthof, "Recent developments and applications for optical full field strain measurement using ESPI and DIC," Proc. SPIE 7997, Fourth International Seminar on Modern Cutting and Measurement Engineering, 79972B (26 May 2011); https://doi.org/10.1117/12.891864