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Micro-Measurements - PhotoStress® Plus - PhotoStress® Analysis System
Stress Separation: [top]
To obtain principle stress/strain values at locations removed from free boundaries, an additional measurement is required. This is usually obtained by using PhotoStress separator gages, or experimentally by creating an artificial free boundary called a slit.
Slitting Technique [top]
A slit is made in the photoelastic coating in the direction of ε1 ε2 which creates a uni-axial stress state at the slit boundary. To create a slit, appropriate tooling is needed including a slitting tool with cutters and freezing spray.
PhotoStress® Analysis System
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