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Whole-field vibration phase measurement with electronic speckle pattern interferometry (ESPI)

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Whole-field vibration phase measurement with electronic speckle pattern interferometry (ESPI)

Valera, J. D; Jones, J. D. C; Fernández Doval, Ángel Manuel
 
DATE : 1994-11-15
UNIVERSAL IDENTIFIER : http://hdl.handle.net/11093/1248
UNESCO SUBJECT : 3311.11 Instrumentos Opticos ; 2209.07 Holografía ; 2201.11 Vibraciones
DOCUMENT TYPE : conferenceObject

ABSTRACT :

A stroboscopically illuminated ESPI system is described for the simultaneous measurement of vibration amplitude and phase. The technique involves modulating both the illumination pulse phase relative to the vibration, and the optical phase of the interferometer reference beam to generate eight video frames which are processed to yield vibration amplitude and phase.

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