Research in Automated Photoelasticity
Parmjit Singh Kanth
Mechanical and Industrial Engineering, University
of Toronto, 1997.
The focus of the current research is on the development of an automated stress analysis system, whereby isochromatic and isoclinic fringe patterns can be separated using image capturing and digital signal processing techniques. The separation will indicate the magnitude and directional information of stress field distribution throughout the specimen. Furthermore, the work considers two and three dimensional analysis using stress freezing techniques, allowing for the analysis of a variety of engineering components such as:
Such a system could be used in conjunction with the finite element method
to analyse, optimize, and redesign engineering components.
Another important engineering application would be in the field of fracture mechanics. Here, photoelasticity can be used to determine the stress intensity factor of a stable crack in a specimen experiencing failure: