Journal
EXPERIMENTAL MECHANICS
Volume 52, Issue 7, Pages 805-815Publisher
SPRINGER
DOI: 10.1007/s11340-011-9545-5
Keywords
3D laser scanning vibrometry; Displacement; Strain; Optical measurements
Categories
Funding
- German Academic Exchange Servise [D/09/42247]
- German Federal Ministry of Education and Research [WTZ AUS06/001]
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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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