3-D ESPI Measurements Applied to Selected Engineering Problems


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The presented paper introduces the application of the Electronic Speckle Pattern Interferometry (ESPI) technique for measurements of contours of strains and stresses on 3-D surfaces. The paper focuses on three selected applications. Firstly, the methodology for determining the Poisson ratio of a material from tensile tests is described. Secondly, results of calibration verification of a biaxial extensometer used for measurements of shear strain in comparison with the ESPI measurements are presented. Finally, the experimental analysis of stresses in welds is discussed. As mentioned in the paper, the method is very useful for material testing, as well as for measurements on structural parts in service.



Edited by:

Pavel Padevět




R. Halama et al., "3-D ESPI Measurements Applied to Selected Engineering Problems", Applied Mechanics and Materials, Vol. 827, pp. 65-68, 2016

Online since:

February 2016




* - Corresponding Author

[1] R. Halama, M. Kalina, L. Pečenka. Use of Digital Holography for Measuring Strains and Stresses. International Masaryk Conference for Ph.D. Students and Young Researchers, 2012, vol. III, pp.2885-2891. ISBN 978-80-905243-3-0.

[2] L. Pečenka, M. Kalina, R. Halama. Verification of ESPI Stress Analysis by Means of FEM. Transactions of the VŠB – Technical University of Ostrava, No. 1, 2013, vol. LIX, pp.65-68. ISSN 1210-0471.

DOI: https://doi.org/10.22223/tr.2013-1/1938

[3] Information on http: /www. dantecdynamics. com.

[4] M. Krejsa et al., Experimental verification of the steel fillet welded joint model: Proceedings of the Fifteenth International Conference on Civil, Structural and Environmental Engineering Computing, CTU in Prague, Prague, Czech Republic (in press).

DOI: https://doi.org/10.4203/ccp.108.34

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