8 September 1994 Compact multibeam shearography for deformation and vibration observation
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Proceedings Volume 2358, First International Conference on Vibration Measurements by Laser Techniques: Advances and Applications; (1994); doi: 10.1117/12.185333
Event: Vibration Measurements by Laser Techniques: First International Conference, 1994, Ancona, Italy
Abstract
The application of a transportable electronic speckle pattern shearing instrument, based on multiple laser sources is presented. Uniform illumination over a wide surface is assured by inexpensive and multiple laser diodes. High visibility deformation and vibration patterns have been obtained using a modified Michelson interferometer, prisms, and diffractive components as shearing optics.
© (1994) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
Paulo del Carretto, Piero P. Perlo, "Compact multibeam shearography for deformation and vibration observation", Proc. SPIE 2358, First International Conference on Vibration Measurements by Laser Techniques: Advances and Applications, (8 September 1994); doi: 10.1117/12.185333; https://doi.org/10.1117/12.185333
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KEYWORDS
Shearography

Laser sources

Michelson interferometers

Prisms

Semiconductor lasers

Speckle pattern

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