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 21 - Fringe Thinning Methodologies
Concepts covered in this lecture: Fringe thinning methodologies, Thresholding to find fringe areas, Binary based and intensity based algorithms, Chen & Taylor algorithm for one scanning direction, Fringe skeletonisation, Global fringe thinning algorithm, Experimental evaluation, Theoretical reconstruction of fringe pattern, Opening remarks on comments on fringe ordering.