Design and evaluation of the poleidoscope: A novel digital polariscope |
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Authors: | J Lesniak S J Zhang E A Patterson |
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Institution: | (1) Stress Photonics Inc, Madison, USA;(2) Department of Mechanical Engineering, University of Sheffield, Sheffield, UK |
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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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Keywords: | Digital photoelasticity poleidoscope ellipsometry |
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