Digital determination of the secondary principal stress parameters in scattered-light photoelasticity

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

Scattered-light photoelasticity provides a nondestructive approach for analyzing the secondary principal stresses in a 3D photoelastic model. In this paper, a method is proposed to determine the whole-field secondary photoelastic parameters (isoclinics and isochromatics) using polarized incident light in the scatted-light photoelasticity. Relevant theory is derived and explained. Two polarization-stepped loaded model images and the associated unloaded model images are used to determine the isoclinic angle and the fractional retardation or fringe order. Tests of this method on a circular disk under diametrical compression are demonstrated. The digitally determined secondary principal stress direction agrees well with the theory.

Original languageEnglish
Title of host publicationProceedings of the 2006 SEM Annual Conference and Exposition on Experimental and Applied Mechanics 2006
Pages1589-1595
Number of pages7
Publication statusPublished - 2006 Oct 31
EventSEM Annual Conference and Exposition on Experimental and Applied Mechanics 2006 - Saint Louis, MO, United States
Duration: 2006 Jun 42006 Jun 7

Publication series

NameProceedings of the 2006 SEM Annual Conference and Exposition on Experimental and Applied Mechanics 2006
Volume3

Other

OtherSEM Annual Conference and Exposition on Experimental and Applied Mechanics 2006
CountryUnited States
CitySaint Louis, MO
Period06-06-0406-06-07

Fingerprint

Photoelasticity
Polarization

All Science Journal Classification (ASJC) codes

  • Engineering(all)

Cite this

Lee, H. L., & Chen, T. Y-F. (2006). Digital determination of the secondary principal stress parameters in scattered-light photoelasticity. In Proceedings of the 2006 SEM Annual Conference and Exposition on Experimental and Applied Mechanics 2006 (pp. 1589-1595). (Proceedings of the 2006 SEM Annual Conference and Exposition on Experimental and Applied Mechanics 2006; Vol. 3).
Lee, H. L. ; Chen, Terry Yuan-Fang. / Digital determination of the secondary principal stress parameters in scattered-light photoelasticity. Proceedings of the 2006 SEM Annual Conference and Exposition on Experimental and Applied Mechanics 2006. 2006. pp. 1589-1595 (Proceedings of the 2006 SEM Annual Conference and Exposition on Experimental and Applied Mechanics 2006).
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Lee, HL & Chen, TY-F 2006, Digital determination of the secondary principal stress parameters in scattered-light photoelasticity. in Proceedings of the 2006 SEM Annual Conference and Exposition on Experimental and Applied Mechanics 2006. Proceedings of the 2006 SEM Annual Conference and Exposition on Experimental and Applied Mechanics 2006, vol. 3, pp. 1589-1595, SEM Annual Conference and Exposition on Experimental and Applied Mechanics 2006, Saint Louis, MO, United States, 06-06-04.

Digital determination of the secondary principal stress parameters in scattered-light photoelasticity. / Lee, H. L.; Chen, Terry Yuan-Fang.

Proceedings of the 2006 SEM Annual Conference and Exposition on Experimental and Applied Mechanics 2006. 2006. p. 1589-1595 (Proceedings of the 2006 SEM Annual Conference and Exposition on Experimental and Applied Mechanics 2006; Vol. 3).

Research output: Chapter in Book/Report/Conference proceedingConference contribution

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AB - Scattered-light photoelasticity provides a nondestructive approach for analyzing the secondary principal stresses in a 3D photoelastic model. In this paper, a method is proposed to determine the whole-field secondary photoelastic parameters (isoclinics and isochromatics) using polarized incident light in the scatted-light photoelasticity. Relevant theory is derived and explained. Two polarization-stepped loaded model images and the associated unloaded model images are used to determine the isoclinic angle and the fractional retardation or fringe order. Tests of this method on a circular disk under diametrical compression are demonstrated. The digitally determined secondary principal stress direction agrees well with the theory.

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Lee HL, Chen TY-F. Digital determination of the secondary principal stress parameters in scattered-light photoelasticity. In Proceedings of the 2006 SEM Annual Conference and Exposition on Experimental and Applied Mechanics 2006. 2006. p. 1589-1595. (Proceedings of the 2006 SEM Annual Conference and Exposition on Experimental and Applied Mechanics 2006).