Development of a simplified model for deformation and strain analyses via digital shearography

Authors

Raphael D. Santos National Institute of Physics, University of the Philippines Diliman
Francesca Celine I. Catalan National Institute of Physics, University of the Philippines Diliman
Victor Angelo C. Gonzalez National Institute of Physics, University of the Philippines Diliman
Percival F. Almoro National Institute of Physics, University of the Philippines Diliman and DTU Fotonik, Danmarks Tekniske Universitet, Roskilde, Denmark

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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Issue

2009: Proceedings of the 27th Samahang Pisika ng Pilipinas Physics Congress

Article ID

SPP-2009-PA-14

Section

Poster Session PA

Published

2009-10-28

How to Cite

[1]

RD Santos, FCI Catalan, VAC Gonzalez, and PF Almoro, Development of a simplified model for deformation and strain analyses via digital shearography, Proceedings of the Samahang Pisika ng Pilipinas 27, SPP-2009-PA-14 (2009). URL: https://proceedings.spp-online.org/article/view/SPP-2009-PA-14.