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Experimental Mechanics

, Volume 44, Issue 2, pp 128–135 | Cite as

Design and evaluation of the poleidoscope: A novel digital polariscope

  • J. Lesniak
  • S. J. Zhang
  • E. A. Patterson
Article

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.

Key Words

Digital photoelasticity poleidoscope ellipsometry 

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Copyright information

© Society for Experimental Mechanics 2004

Authors and Affiliations

  • J. Lesniak
    • 1
  • S. J. Zhang
    • 2
  • E. A. Patterson
    • 2
  1. 1.Stress Photonics IncMadisonUSA
  2. 2.Department of Mechanical EngineeringUniversity of SheffieldSheffieldUK

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