Development of a simplified model for deformation and strain analyses via digital shearography
Abstract
A simplified model for the measurements of surface deformation and strain using digital shearography is presented. The model uses phase calculation and subtraction to obtain the shearogram which represents the effective phase difference distribution at the detector plane. The shearogram is directly related to the surface strain and, upon integration, to the surface deformation. The characteristics of the shearograms for increasing deformations and its sensitivity to shearing angle are evaluated. The numerical results confirm the experimental shearograms obtained from previous works. The shearography model can be used in optimizing the setup parameters and validating experimental results.
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Scouting the grand vista: From curiosity-driven research to real world application
28-30 October 2009, Development Academy of the Philippines Convention Center, Tagaytay City