Abstract
Digital image processing is used to create an optical extensometer to measure deformation in materials under quasi-static loading. The optical extensometer setup created in the present work is a single camera setup which is a two-dimensional system. The main objective of this work is to create an optical extensometer system by digital image processing to measure the deformation and strain in materials under tensile and compressive loading and to calculate the properties of these materials. Furthermore, the aim is to optimize the parameters used in digital image processing by studying the effect of different parameters on the quality of the digital images and performing statistical analysis in order to attain the best configuration of the camera setup. The setup is implemented by acquiring digital images of the tested specimens simultaneously with the load recorded by the load cell, and user-friendly software is developed to analyze the acquired images and measure deformation and strain. Subsequently, the loads can be inserted, and the mechanical properties of the materials tested can be calculated.
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