Equivalence of Intensity Integration Technique with Line Summation method for contouring of 1D Reflective surfaces

Author(s):
Raghuraman M, SRM University
Keywords
Correlation, IIT, optical strain, deformation, line, summation, slope, curvature, reflective
Abstract
Digital image correlation and tracking (DIC) is an optical method that employs tracking and image registration techniques for accurate 2D and 3D measurements of changes in images. This is often used to measure deformation, displacement, strain. Intensity Integration Technique and Line summation method are one of DIC Techniques. The purpose of this research is to identify the similarities between the Intensity Integration Technique and Line Summation method for Cantilever beam under the given loading conditions where the slope and curvature is found out for mirror like reflective surfaces. In Intensity Integration Technique (IIT) for small deformation, it is assumed that total amount of light reflected by a designated area on the surface would be same before and after deformation when there is no change in illumination (conservation of the total quantity of reflected light). Line summation method is a grid method where the optical strain of grid lines is related to slope and curvature of the loaded beams (Theory of bending). The spacing between two grid lines is unaltered under no load condition and spacing changes when it is in loaded condition. Thus, the strain is related to slope and curvature. These findings may be useful in study of material deformation, nature of defect (inclusion and void) and crack propagation in real-world applications, as it has the potential to become a cheap, simple yet accurate solution.	
Reference
[1]	G.Subramanian and R.Arunagiri, “Reflecting grid method for curvature and twist.” Journal of Strain (1981), 17(3), 87–88.
[2]	G.Subramanian and V.R.Jagannath, “Surface contouring of reflecting plates using intensity integration technique”. Journal of Experimental Mechanics (2001), 37(4), 159– 165.
[3]	Theocaris, P. S., “Moire fringes in strain analysis”, Pergamon Press, Oxford, (1969), 241
[4]	Chiang, F. P. and Bailangadi, M., “A method for direct determination of small curvatures”, Journal of App. Mech., 42(1), (1975), 29-31
[5]	Ligtenberg, F. K., “The Moire method-a new experimental method for the determination of moments in small slab models”, Proc. SESA, 12(II),(1954), 83-98
Other Details
Paper ID: GRDCF002009
Published in: Conference : International Conference on Innovations in Engineering and Technology (ICIET) - 2016
Page(s): 18 - 23
Article Preview
Academia.edu is a social networking website for academics. It was launched in September 2008 and had over 21 million registered users as of April 2015.The platform can be used to share papers, monitor their impact, and follow the research in a particular field. Academia.edu was founded by Richard Price, who raised $600,000 from Spark Ventures, Brent Hoberman, and others.
Learn More
Google Scholar is a freely accessible web search engine that indexes the full text or metadata of scholarly literature across an array of publishing formats and disciplines. Released in beta in November 2004, the Google Scholar index includes most peer-reviewed online journals of Europe and America's largest scholarly publishers,plus scholarly books and other non-peer reviewed journals.
Learn More
Issuu is a free electronic publishing platform for magazines, catalogs, newspapers and more. As a digital newsstand with over 21 million publications and 85 million active readers
Learn More
ResearchBib is a free academic database that indexes and provides open access to peer-reviewed journals, full text papers, research conferences & positions.
Learn More
Scribd is a digital library and ebook, audiobook and comic book subscription service that includes one million titles. In addition, Scribd hosts 60 million documents on its open publishing platform.
Learn More