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R. DAÏRA1,* , B. BOUDJEMA1, M. MORDJAOUI2
The electronic technique of interferometry speckle, used in the measurement of the deformations of diffusing objects, is based on the process of subtraction of the figures of interferences. A first image of speckle is recorded before the deformation of the object in the RAM of a computer, followed a second after deformation. The square of the difference between the two images gives fringes of correlation in observable real times directly on the monitor. The interpretation of these fringes makes it possible to determine the deformation. In this communication, we have experimental results of deformation out of the plan of two samples out of Aluminium and STAINLESS.
Speckle, Non destructive testing, Aluminium, Interferometry, Image processing.
R. DAÏRA, B. BOUDJEMA, M. MORDJAOUI, Control of the deformations of objects by electronic interferometry speckle (ESPI), Optoelectronics and Advanced Materials - Rapid Communications, 1, 12, December 2007, pp.717-721 (2007).
Submitted at: Oct. 1, 2007
Accepted at: Nov. 27, 2007
Optoelectronics and Advanced Materials - Rapid Communications
(2024): Impact Factor = 0.4 - Journal Citation Reports (Clarivate Analytics, 2025)
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