White Light Speckle Method For Vibration Of Plates

A. Asundi; F. P. Chiang

doi:10.1117/12.941688

17 February 1987 White Light Speckle Method For Vibration Of Plates

A. Asundi, F. P. Chiang

Proceedings Volume 0814, Photomechanics and Speckle Metrology; (1987) https://doi.org/10.1117/12.941688
Event: 31st Annual Technical Symposium on Optical and Optoelectronic Applied Sciences and Engineering, 1987, San Diego, CA, United States

Abstract

The white light speckle method is used to study the in-plane and out-of-plane vibration of plates. By suitable choice of experimental set-up, the amplitude of vibration and location of the nodal or antinodal regions can be determined. For in-plane vibration studies, the object is coated with a layer of retro-reflective paint, which creates a random speckle pattern when illuminated by a beam of white light. Filtered time-averaged patterns recorded in this way gives the amplitudes of the sinusoidal oscillation. For out-of-plane vibration studies, the reflection speckle method and the projection speckle method provide the anti-nodal and nodal regions respectively.

Citation Download Citation

A. Asundi and F. P. Chiang "White Light Speckle Method For Vibration Of Plates", Proc. SPIE 0814, Photomechanics and Speckle Metrology, (17 February 1987); https://doi.org/10.1117/12.941688

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