Surface Strain Measurements Using a 3D Scanning Laser Vibrometer

Hannah Weisbecker; Benjamin Cazzolato; Stuart Wildy; Steffen Marburg; John Codrington; Andrei Kotousov

doi:10.1007/s11340-011-9545-5

Surface Strain Measurements Using a 3D Scanning Laser Vibrometer

Hannah Weisbecker, Benjamin Cazzolato, Stuart Wildy, Steffen Marburg, John Codrington, Andrei Kotousov

Research output: Contribution to journal › Article › peer-review

28 Citations (Scopus)

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.

Original language	English
Pages (from-to)	805-815
Number of pages	11
Journal	Experimental Mechanics
Volume	52
Issue number	7
DOIs	https://doi.org/10.1007/s11340-011-9545-5
Publication status	Published - Sept 2012

Keywords

3D laser scanning vibrometry
Displacement
Optical measurements
Strain

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10.1007/s11340-011-9545-5

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AU - Codrington, John

AU - Kotousov, Andrei

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AB - 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.

KW - 3D laser scanning vibrometry

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KW - Optical measurements

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Surface Strain Measurements Using a 3D Scanning Laser Vibrometer

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Keywords

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