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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 possible to determine the deformation.
Speckle, Non destructive testing, Aluminium, Interferometry, Image processing.
R. DAÏRA, B. BOUDJEMA, M. MORDJAOUI, Measurement of the deformations of objects by optical method, Optoelectronics and Advanced Materials - Rapid Communications, 3, 2, February 2009, pp.89-93 (2009).
Submitted at: Oct. 1, 2007
Accepted at: Feb. 13, 2009
Optoelectronics and Advanced Materials - Rapid Communications
(2023): 0.5 - 2023 Journal Citation Reports (Clarivate Analytics, 2024)
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