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Surface Strain Measurements Using a 3D Scanning Laser Vibrometer |
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| Authors: | H Weisbecker B Cazzolato S Wildy S Marburg J Codrington A Kotousov |
| Institution: | 1.Institut für Festk?rpermechanik,Technische Universit?t Dresden,Dresden,Germany;2.School of Mechanical Engineering,University of Adelaide,Adelaide,Australia;3.School of Computer Science, Engineering and Mathematics,Flinders University of South Australia,Adelaide,Australia;4.LRT4 - Institute of Mechanics,Universit?t der Bundeswehr München,Neubiberg,Germany |
| 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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