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Proceedings Paper

Strain Analysis Using TV Speckle Interferometer
Author(s): H. El-Ghandoor; A. M. Hamed
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Paper Abstract

A theoretical investigation of the signal processing by Electronic Speckle Pattern Interferometry ESPI is presented. Both optical and electronic noise are considered, and the optimum S/N ratio of ESPI with respect to a new reference/object ratio is obtained. The technique of ESPI is applied to study rough object deformation. We assume that the 1st signal representing one state of the object is recorded on a high resolution film while the 2nd signal representing another state of the object is recorded in real time through TV camera. Making use of coherent beam behaving as a carrier wave interference pattern will form over a TV monitor. Experimental results of interference images from the TV screen are photographed showing the validity of the technique.

Paper Details

Date Published: 1 June 1988
PDF: 7 pages
Proc. SPIE 0863, Industrial Optoelectronic Measurement Systems Using Coherent Light, (1 June 1988); doi: 10.1117/12.943500
Show Author Affiliations
H. El-Ghandoor, Ain Shams Univ (Egypt)
A. M. Hamed, Ain Shams Univ (Egypt)


Published in SPIE Proceedings Vol. 0863:
Industrial Optoelectronic Measurement Systems Using Coherent Light
William F. Fagan, Editor(s)

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