25 November 1985 Stress Analysis Combining Speckle Metrology With Finite Element Modelling
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Abstract
The work described in this paper represents an effort to demonstrate the validity of the hybrid approach to the analysis of structural deformation. Mathematical modelling was incorporated into the process of reducing data from a digital correlation analysis of a speckled surface. The experimental data was collected both by directly imaging the surface onto a digitizing vidicon system and by transmitting the image through a coherent optical fiber bundle. Considerable savings of time and resources can be realized through the hybrid approach and the strengths of the theoretical and experimental procedures complement each other beautifully. The final results agreed within a few percent of each other and with values obtained by another independent method (high frequency moire), demonstrating the accuracy of the procedure.
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D. R. Matthys, D. R. Matthys, T. D. Dudderar, T. D. Dudderar, J. A. Gilbert, J. A. Gilbert, M. A. Taher, M. A. Taher, H. S. Johnson, H. S. Johnson, "Stress Analysis Combining Speckle Metrology With Finite Element Modelling", Proc. SPIE 0556, Intl Conf on Speckle, (25 November 1985); doi: 10.1117/12.949530; https://doi.org/10.1117/12.949530
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