Application of Faraday's effect in static and dynamic holographic photoelasticity

The basic principle of Faraday's effect to achieve the separation of fringes in static and dynamic photoelasticity is discussed. The application of Faraday's light rotator is described, and it is proposed that the rotator be used for automating photoelastic instrumentation for measuring isoclinics and the decimal orders of isochromatic fringes. A series of experiments are conducted, using electric control and taking readings of the electric current, which provides a better signal for the potential automation of photoelastic instrumentation. The method may be used in combination with photoelectric receiving, digital indicating, and automatic recording systems.