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Towards a full-field compensation method

Scope of technical note is to point out a modification of Tardy's compensation principle which approaches a solution to the problem of full-field compensation

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Abstract

A new application of the principles of Tardy's compensation has been suggested in order to determine fractional-order isochromatic fringes, avoiding the necessity of compensating at isolated points. The accuracy of this method, although lower than the accuracy of point-by-point Tardy's compensation, is acceptable for most engineering work.

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Abbreviations

I 0;1;2 :

light flux from first, second and third polarizers

F 1;2 :

modulation functions

E x0;y0 :

components of the light vector at the point of the entrance into the set of retarders

E x;y :

components of the light vector after transformation by the set of retarders

S(α) :

matrix of rotation

G(Δ):

phase matrix

2Δ:

phase retardation

α:

mutual relative angle of principal directions of the retarders

References

  1. Post, D., “Isochromatic Fringe Sharpening and Fringe Multiplication in Photoelasticity,”Proc. of SESA,12 (2),143–156 (1955).

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  2. Richartz, M. andHsu Hsien-Yu, “Analysis of Elliptical Polarization,”Journal Opt. Soc. Amer.,39,136 (1949).

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  3. Schwieger, H. andHaberland, J., “Die Abwendung der Aquidensitometrie in der Spannungsoptik”,Bauplanung und Bautecknik,9 (2),71 (1955).

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Authors and Affiliations

  1. Pontificia Universidade Católica Do Rio de Janeiro, Rio de Janerio, Brazil

    Jan Cernosek (Associate Professor)

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  1. Jan Cernosek
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Cernosek, J. Towards a full-field compensation method. Experimental Mechanics 12, 152–154 (1972). https://doi.org/10.1007/BF02328565

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  • DOI: https://doi.org/10.1007/BF02328565

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