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An improved oblique-incidence technique for principal-strain separation in photoelastic coatings

Paper presents an improved oblique-incidence method which allows oblique-incidence measurements of relative retardation in photoelastic coatings to be performed from a fixed observation point, without rotating the test object or the polariscope

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Abstract

This paper presents a generalized theory for oblique-incidence measurement of relative retardation in photoelastic coatings. Using this theory, measurements can be performed from a fixed observation point and do not require rotating the test object. Thus, this technique greatly reduces the time and labor involved in oblique-incidence measurements. Furthermore, the technique is potentially applicable to the separation of dynamic principal strains.

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Authors and Affiliations

  1. Tire Performance Research, B.F. Goodrich Research Development Center, 44141, Brecksville, OH

    M. G. Pottinger (Manager)

Authors
  1. Y. Y. Hung
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  2. M. G. Pottinger
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Additional information

Y.Y. Hung (SESA Member) was formerly associated with B.F. Goodrich Research and Development Center; is now Associate Professor, Oakland University, Rochester, MI 48063.

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Hung, Y.Y., Pottinger, M.G. An improved oblique-incidence technique for principal-strain separation in photoelastic coatings. Experimental Mechanics 20, 170–173 (1980). https://doi.org/10.1007/BF02327121

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  • DOI: https://doi.org/10.1007/BF02327121

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