Morphological Analysis for Temporary Behaviour Description of Photoelasticity Images on Plastic Films

Thermo-deformable plastic films experience an optical birefringence phenomenon when they are subjected to mechanical strain, this phenomenon can be described by color fringes behavior observed in sequences of images acquired through photoelasticity assemblies. This paper proposes a temporary morphological analysis that color fringes experience when the plastic film is deformed. For the image analysis, stereology and erosion surfaces techniques are applied. It achieves the relationship between morphological description and mechanical behavior of the plastic films deformation process. The stereology and erosion surfaces allowed the identification of the appearance of color fringes that gradually increase in size into the image sequence. The morphological results showed that temporary behavior of color fringes could be used for modeling the mechanical behavior of the plastic films deformation process.