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

H. L. Lee; Terry Yuan-Fang Chen

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

Department of Mechanical Engineering

Research output: Chapter in Book/Report/Conference proceeding › Conference 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 language	English
Title of host publication	Proceedings of the 2006 SEM Annual Conference and Exposition on Experimental and Applied Mechanics 2006
Pages	1589-1595
Number of pages	7
Publication status	Published - 2006 Oct 31
Event	SEM Annual Conference and Exposition on Experimental and Applied Mechanics 2006 - Saint Louis, MO, United States Duration: 2006 Jun 4 → 2006 Jun 7

Publication series

Name	Proceedings of the 2006 SEM Annual Conference and Exposition on Experimental and Applied Mechanics 2006
Volume	3

Other

Other	SEM Annual Conference and Exposition on Experimental and Applied Mechanics 2006
Country	United States
City	Saint Louis, MO
Period	06-06-04 → 06-06-07

All Science Journal Classification (ASJC) codes

Engineering(all)

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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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title = "Digital determination of the secondary principal stress parameters in scattered-light photoelasticity",

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.",

author = "Lee, {H. L.} and Chen, {Terry Yuan-Fang}",

year = "2006",

month = oct,

day = "31",

language = "English",

isbn = "091205395X",

series = "Proceedings of the 2006 SEM Annual Conference and Exposition on Experimental and Applied Mechanics 2006",

pages = "1589--1595",

booktitle = "Proceedings of the 2006 SEM Annual Conference and Exposition on Experimental and Applied Mechanics 2006",

note = "SEM Annual Conference and Exposition on Experimental and Applied Mechanics 2006 ; Conference date: 04-06-2006 Through 07-06-2006",

}

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 proceeding › Conference contribution

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AU - Lee, H. L.

AU - Chen, Terry Yuan-Fang

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N2 - 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.

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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