RGB profiles in digital image analysis for the description of interference colors produced on photoelasticity studies of the plastic film deformation

Abstract

Over the last years image analysis has taken great positioning in the automation of industrial processes, digital photoelasticity employs techniques supported in the digital image analysis applied to studies based on measuring of the intensity of light and the reconstruction of the phase maps generated in the transmission of light through the studied material. This paper proposes the implementation of profiles RGB image analysis to describe the behavior of the interference colors produced in photoelasticity studies during deformation of plastic films, these techniques aim to study the photoelastic characteristics of plastic films starting from the analysis of the content of an image generated through a pattern of polarization. Plastic films samples are subjected to tensile mechanical, optical polarization assemblies are used for observing the phenomenon of photoelasticity, a digital camera is used to capture changes in interference colors, and RGB profiles are used for image analysis. The use of the implemented technique allows to identify the transition points for the change of order in the colors of interference, and to describe the behavior of the color stripes in the same order.