Transient response of a plate convolved with a mechanical shaker using high speed optical interferometry

C. Perez-Lopez; J. Sanchez Preciado

doi:10.1117/12.2197265

24 August 2015 Transient response of a plate convolved with a mechanical shaker using high speed optical interferometry

C. Perez-Lopez, J. Sanchez Preciado

Proceedings Volume 9660, SPECKLE 2015: VI International Conference on Speckle Metrology; 96600O (2015) https://doi.org/10.1117/12.2197265
Event: SPECKLE 2015: VI International Conference on Speckle Metrology, 2015, Guanajuato, Mexico

Abstract

Transient response analysis is widely used in mechanical systems; with a single stimulation the mechanical behavior of the system could be characterized. Commonly, the entrance used in transient systems is a delta function, due to the possibility of stimulate the system in a wide range of frequencies. Unfortunately, the Dirac function is not easy to achieve. For this work we stimulated a mechanical shaker with a step function obtaining a Gaussian-type displacement of the spike. The spike is then used as the entrance signal for a square elastic plate. The measurement of the convolved transient response of an elastic plate is obtained by means of a high speed camera working at 10,000 fps with an out of plane speckle interferometer. Experimental results are shown.

Citation Download Citation

C. Perez-Lopez and J. Sanchez Preciado "Transient response of a plate convolved with a mechanical shaker using high speed optical interferometry", Proc. SPIE 9660, SPECKLE 2015: VI International Conference on Speckle Metrology, 96600O (24 August 2015); https://doi.org/10.1117/12.2197265

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KEYWORDS

High speed cameras

Optical interferometry

Cameras

Interferometry

Laser Doppler velocimetry

Speckle

Speckle pattern

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