photoelasticity


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Related to photoelasticity: birefringence

photoelasticity

[¦fōd·ō‚i‚las′tis·əd·ē]
(optics)
An experimental technique for the measurement of stresses and strains in material objects by means of the phenomenon of mechanical birefringence.
References in periodicals archive ?
Second, for field-field interaction in solids, spectral methods in photoelasticity have been proposed based on the tensor tomography and on the hybrid method which combines experimental results with analytics [4,5].
Key words: stress analysis, FEM, photoelasticity, screw joint
Photoelasticity, deflectometry methods and grids, holography, speckle interferometry and image correlation are thus the subject of dedicated chapters.
The mathematical model of calculation obtained using the finite element method was validated by means of the photoelasticity technique (Iliescu, Atanasiu, 2006).
Photoelasticity and boiling water tests were implemented as well.
It is less known that Seebeck discovered the piezooptic effect or photoelasticity in 1813 [3,4].
The experimental investigation was conducted using the three-dimensional photoelasticity technique (Iliescu & Atanasiu, 2006; Paipetis, 1990).
The most elaborate physical modeling of entire injection molding stages in the literature has included nonlinear viscoelasticity and photoelasticity for the liquid state and linear viscoelasticity, photoviscoelasticity and free volume theory for the solid state along with a Tait's state equation, and could successfully predict birefringence and residual stress profile especially when a pressure dependent lateral motion model (PLMM) was adopted (10-13).
The aim of this paper is to show that Seebeck observed in his apparatus in various glass specimens the basic photoelastic effect, isoclinic and interference fringes, which are used nowadays for residual stress measurement in glass and in other applications of photoelasticity.
In order to perform a structural optimization of the scroller shaft, it was necessary to validate the mathematical model of calculation using the photoelasticity technique.
To observe the molded polymer behavior in the cavity, a test mold with an acrylic observation window in its side and an optical setup similar to photoelasticity visualization were used.