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On the effect of residual birefringence in anisotropic photoelastic materials
Author(s) -
MITTAL R. K.
Publication year - 1975
Publication title -
strain
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.477
H-Index - 47
eISSN - 1475-1305
pISSN - 0039-2103
DOI - 10.1111/j.1475-1305.1975.tb00136.x
Subject(s) - birefringence , isotropy , anisotropy , residual , materials science , residual stress , optics , photoelasticity , dielectric , composite material , physics , mathematics , optoelectronics , algorithm , solid mechanics
The effect of residual birefringence on isoclinic angle and fringe order is considered for mechanically and optically anisotropic materials. Toupin's 4 theory of deformable dielectrics forms the basis of the investigation. Equations are derived for fringe order, stress fringe value and isoclinic angle in linear orthotopic photoelastic materials. The principal effect of residual birefringence relates to the determination of the isoclinic angle. This is particularly so for certain fibre–orientations. Unlike the isotropic case, the isoclinic angle depends on the stress at which it is measured.