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10 June 1996 Cases of weak and strong birefringence in integrated photoelasticity
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Proceedings Volume 2791, Photomechanics '95; (1996)
Event: Photomechanics '95, 1995, Novosibirsk, Russian Federation
General algorithm of integrated photoelasticity is complicated and leads to nonlinear relationships between the stress components and measurement data. It is shown that effective algorithms for determining completely the axisymmetric state of stress and for measuring normal stress distribution in an arbitrary 3-D model, can be constructed if birefringence is weak. In the case of strong birefringence stresses can be determined only if rotation of the principal stress axes is absent or weak. In the general case of strong birefringence curious optical phenomena take place and integrated fringe pattern becomes ambiguous.
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Hillar K. Aben, Juri Josepson, and Alfred E. Puro "Cases of weak and strong birefringence in integrated photoelasticity", Proc. SPIE 2791, Photomechanics '95, (10 June 1996);

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