14 February 2005 A virtual instrument based on lightwave scattering by surfaces for real-time mapping of atmospheric corrosion of metals
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Abstract
The present work reports the design and implementation of an optical-sensor based virtual instrument for visualizing and estimating the degree of corrosion of metal surfaces exposed to atmosphere. A platform carrying the specimen plates was driven by a stepper motor assembly horizontally in XY directions. An opto-electronic transmitter-receiver unit was fixed vertically very close to the platform so that the sample surfaces may be scanned by a light beam. The reflected and scattered optical signals from each point in the scanned area were acquired by the sensor module. A parameter incorporating the relative values of these signals proved to be a fairly reliable measure of the surface texture, which in turn consistently represented the degree of corrosion. These signals interfaced with a personal computer enabled 3D visualization of the magnitude of the corrosion level of the surface and 2D mapping of the surface corrosion.
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Arunachalam Ponnusamy Kabilan, Arunachalam Ponnusamy Kabilan, Marimuthu Paulvanna Nayaki, Marimuthu Paulvanna Nayaki, Sadagopan Sathiyanarayanan, Sadagopan Sathiyanarayanan, } "A virtual instrument based on lightwave scattering by surfaces for real-time mapping of atmospheric corrosion of metals", Proc. SPIE 5634, Advanced Sensor Systems and Applications II, (14 February 2005); doi: 10.1117/12.574467; https://doi.org/10.1117/12.574467
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