The application of phase-shifting photoelasticity to a real-time dynamic event involves simultaneous recording of the four phase-shifted images. Here an instrument, believed to be novel, is developed and described for this purpose. Use of a Multispec Imager is introduced into digital photoelasticity for the first time to our knowledge. This device enables splitting the optical energy of an object into four identical paths, thus permitting recording of the required four phase-shifted images. Experimental demonstration is provided for validation.
© 2001 Optical Society of America
Anand Asundi, Liu Tong, and Chai Gin Boay, "Dynamic Phase-Shifting Photoelasticity," Appl. Opt. 40, 3654-3658 (2001)