Experimental Stress Analysis. Instructor: Prof. K. Ramesh, Department of Applied Mechanics, IIT Madras. The course covers the basic aspects of experimental stress analysis that includes exhaustive treatment of the most versatile techniques like photoelasticity and strain gauges and also a brief introduction to the emerging techniques like digital image correlation. In addition it also provides the fundamental aspects of six different experimental techniques such as Moire, brittle coatings, holography, speckle methods, thermoelastic stress analysis and caustics.
(from nptel.ac.in)
Lecture 05 - Introduction to Moire, Bridle Coatings and Holography
Concepts covered in this lecture: Brief introduction to Moire, Brittle coatings and Holography. Difference between normal photography and holography, Visualising the depth information, Formation of speckles due to illumination by a laser, Rainbow hologram.