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Digital Photoelasticity

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Photomechanics

Part of the book series: Topics in Applied Physics ((TAP,volume 77))

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Abstract

Photoelasticity is an experimental technique for stress and strain analysis. The method is based upon an optical property called double refraction, or birefringence, of some transparent materials. The birefringence in a stressed photoelastic model is controlled by the state of stress at each point in the model. It is very useful for problems in which stress or strain information is required for extended regions of the structure or member, and particularly for those having complicated geometry, complicated loading conditions, or both. While the traditional areas of application have largely been taken over by numerical techniques, advances in computer technology and digital image processing techniques have made photoelastic analysis more efficient and reliable for solving engineering problems. The main aim of this review is to provide the reader with a brief background of the computer-based digital image processing approaches for evaluation of photoelastic fringe patterns, and for the determination of isochromatic fringe orders and principal stress directions from photoelastic images.

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Author information

Authors and Affiliations

  1. Department of Mechanical Engineering, National Cheng Kung University, Tainan, 701, Taiwan, Republic of China

    Terry Y. Chen

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  1. Terry Y. Chen
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Editors and Affiliations

  1. Stress Analysis Laboratory IMAC-DGC, Swiss Federal Institute of Technology, 1015, Lausanne, Switzerland

    Pramod K. Rastogi

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© 2000 Springer-Verlag Berlin Heidelberg

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Chen, T.Y. (2000). Digital Photoelasticity. In: Rastogi, P.K. (eds) Photomechanics. Topics in Applied Physics, vol 77. Springer, Berlin, Heidelberg. https://doi.org/10.1007/3-540-48800-6_6

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  • DOI: https://doi.org/10.1007/3-540-48800-6_6

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  • Publisher Name: Springer, Berlin, Heidelberg

  • Print ISBN: 978-3-540-65990-7

  • Online ISBN: 978-3-540-48800-2

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