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Design and evaluation of the poleidoscope: A novel digital polariscope

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Abstract

The goal of recent research in digital photoelasticity has been fast, reliable, and accurate full-field photoelastic data that will allow the technique to play a valued role in assessing material and structural integrity. A novel design for a polariscope that allows simultaneous capture of multiple images is described, and a prototype instrument is evaluated using both transmission and reflection photoelasticity. The design offers the potential for real-time data acquisition and processing of high-speed events, using a number of different approaches to digital photoelasticity. The evaluation of the instrument arranged for the phase-stepping method demonstrated that it was capable of providing results of comparable quality and accuracy to manual analysis and more conventional methods of acquiring phase-stepped images.

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Authors and Affiliations

  1. Stress Photonics Inc, Madison, USA

    J. Lesniak (SEM Member)

  2. Department of Mechanical Engineering, University of Sheffield, Sheffield, UK

    S. J. Zhang & E. A. Patterson

Authors
  1. J. Lesniak
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  2. S. J. Zhang
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  3. E. A. Patterson
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Lesniak, J., Zhang, S.J. & Patterson, E.A. Design and evaluation of the poleidoscope: A novel digital polariscope. Experimental Mechanics 44, 128–135 (2004). https://doi.org/10.1007/BF02428172

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  • DOI: https://doi.org/10.1007/BF02428172

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