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A Digital Laser Speckle Technique for Generating Slope Contours of Bent Plate

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Advancement of Optical Methods & Digital Image Correlation in Experimental Mechanics, Volume 3

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Abstract

A digital method is proposed whereby spatial speckles created when an optically rough surface is illuminated by a diffuse coherent laser beam are used to generate slope contour fringes. This is done by photographing the speckles contained in a parallel plane in front of the plate before and after deformation. The resulting photographs are then Fast Fourier Transformed twice with the digital image correlation software CASI to produce slope contours.

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Acknowledgement

We gratefully acknowledge the support of Dr. Rajapakse, and the financial support of the Office of Naval Research through award NO.-N00014-17-1-2873.

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Authors and Affiliations

  1. Department of Mechanical Engineering, State University of New York at Stony Brook, Stony Brook, NY, USA

    Austin Giordano & Fu-Pen Chiang

Authors
  1. Austin Giordano
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  2. Fu-Pen Chiang
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Corresponding author

Correspondence to Austin Giordano .

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Editors and Affiliations

  1. Dipartimento Meccanica, Matematica e Management, Politechnico di Bari, Bari, Italy

    Luciano Lamberti

  2. Graduate Institute of Precision Engineering, National Chung Hsing University, Taichung, Taiwan

    Ming-Tzer Lin

  3. Mechanical Engineering Department, Worcester Polytechnic Institute, Worcester, MA, USA

    Cosme Furlong

  4. Department of Mechanical, Materials and Aerospace Engineering, Illinois Institute of Technology, Chicago, IL, USA

    Cesar Sciammarella

  5. Sandia National Laboratory, Albuquerque, NM, USA

    Phillip L. Reu

  6. Department of Mechanical Engineering, University of South Carolina, Columbia, SC, USA

    Michael A Sutton

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Giordano, A., Chiang, FP. (2019). A Digital Laser Speckle Technique for Generating Slope Contours of Bent Plate. In: Lamberti, L., Lin, MT., Furlong, C., Sciammarella, C., Reu, P., Sutton, M. (eds) Advancement of Optical Methods & Digital Image Correlation in Experimental Mechanics, Volume 3. Conference Proceedings of the Society for Experimental Mechanics Series. Springer, Cham. https://doi.org/10.1007/978-3-319-97481-1_28

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  • DOI: https://doi.org/10.1007/978-3-319-97481-1_28

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  • Publisher Name: Springer, Cham

  • Print ISBN: 978-3-319-97480-4

  • Online ISBN: 978-3-319-97481-1

  • eBook Packages: EngineeringEngineering (R0)

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