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Surface Strain Measurements Using a 3D Scanning Laser Vibrometer

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Abstract

Three-dimensional scanning laser vibrometers enable extremely accurate non-contact measurement of the three-dimensional displacements on the surface of structures. This paper looks at the feasibility of using such a scanning laser vibrometer for the non-contact measurement of dynamic strain fields across the surface of a planar structure subjected to in-plane loading. Issues such as laser head alignment and choice of differentiation filter parameters are discussed. Finally, experimental results of two test specimens are presented which clearly demonstrate the significant potential of this new experimental technique as well as highlighting several limitations.

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Acknowledgements

This project was partly funded by the German Academic Exchange Servise (D/09/42247) and by the German Federal Ministry of Education and Research (WTZ AUS06/001).

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Authors and Affiliations

  1. Institut für Festkörpermechanik, Technische Universität Dresden, 01062, Dresden, Germany

    H. Weisbecker

  2. School of Mechanical Engineering, University of Adelaide, Adelaide, SA, Australia

    B. Cazzolato, J. Codrington & A. Kotousov

  3. School of Computer Science, Engineering and Mathematics, Flinders University of South Australia, Adelaide, SA, Australia

    S. Wildy

  4. LRT4 - Institute of Mechanics, Universität der Bundeswehr München, 85577, Neubiberg, Germany

    S. Marburg

Authors
  1. H. Weisbecker
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  2. B. Cazzolato
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  3. S. Wildy
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  4. S. Marburg
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  5. J. Codrington
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  6. A. Kotousov
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Corresponding author

Correspondence to B. Cazzolato.

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Weisbecker, H., Cazzolato, B., Wildy, S. et al. Surface Strain Measurements Using a 3D Scanning Laser Vibrometer. Exp Mech 52, 805–815 (2012). https://doi.org/10.1007/s11340-011-9545-5

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  • DOI: https://doi.org/10.1007/s11340-011-9545-5

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