A projection moire interferometer is presented which was developed to study rotating vibrating objects such as turbine blade assemblies. Three methods of moire interferometry were used in this study: pulsed; time-average; and real time. Real-time moire interferometry used in conjunction with image derotation and strobe techniques is shown to be a viable method of studying traveling wave modes on a rotating disk.
© 1983 Optical Society of America
K. G. Harding and J. S. Harris, "Projection moire interferometer for vibration analysis," Appl. Opt. 22, 856-861 (1983)