Digital speckle photography combined with TV shearography is developed for precise measurement of the magnitude of the shear field in a linear shear configuration. As an application the method is implemented to determine the slope-change variations of a three-dimensional object with TV shearography in which the shear magnitude is obtained with the digital speckle photography technique.
© 2000 Optical Society of America
(120.3940) Instrumentation, measurement, and metrology : Metrology
(120.4290) Instrumentation, measurement, and metrology : Nondestructive testing
(120.6160) Instrumentation, measurement, and metrology : Speckle interferometry
Angelica Andersson, Nandigana Krishna Mohan, Mikael Sjödahl, and Nils-Erik Molin, "TV Shearography: Quantitative Measurement of Shear-Magnitude Fields by use of Digital Speckle Photography," Appl. Opt. 39, 2565-2568 (2000)