Paper Title:
A New Six-Step Phase Shifting Technique Using Mixed-Polariscope in Digital Photoelasticity
  Abstract

Photoelasticity is one of the most widely used techniques for experimental stress and strain analysis. With the availability of low cost digital image processing systems, a separate branch of photoelasticity known as digital photoelasticity came into existence providing whole-field values of the isoclinics (θ) and isochromatics (N) in a true sense. Among the several methods available for data acquisition, phase shifting / polarization stepping techniques are most widely used for their simplicity and accuracy. In this paper a new digital photoelastic method based on phase shifting using monochromatic light source is presented. It provides full field values of θ and N. The arrangement is carefully chosen with the intention of reducing the influence of quarter wave mismatch error in the evaluation of θ and N. The methodology is validated for the benchmark problem of a disk under diametral compression.

  Info
Periodical
Key Engineering Materials (Volumes 326-328)
Edited by
Soon-Bok Lee and Yun-Jae Kim
Pages
35-38
DOI
10.4028/www.scientific.net/KEM.326-328.35
Citation
M. Ramji, K. Ramesh, "A New Six-Step Phase Shifting Technique Using Mixed-Polariscope in Digital Photoelasticity", Key Engineering Materials, Vols. 326-328, pp. 35-38, 2006
Online since
December 2006
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$32.00
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