Optical Methods for Solid and Fluid Mechanics
INTENDED AUDIENCE :Final year undergraduate students in engineering; PG & PHD students wanting to specialize in experimental methods in fluid and solid mechanics
PREREQUISITES : Not required, but background in fluid and solid mechanics and optics can be helpful.
INDUSTRIES SUPPORT : Industries requiring experimental work specially those involved in aviation.
ABOUT THE COURSE :Course dealing with use of optical methods for quantification of fluid and solid mechanics phenomena. On the fluid mechanics front, the course will focus primarily on fluid flow visualization and quantification. Techniques discussed will include shadowgraphy, particle tracking velocimetry (PTV) and particle imaging velocimetry (PIV). The section on solid mechanics will cover a range of methods, including strain field visualization using Digital Image Correlation (DIC), stress measurements using photoelasticity and volumetric imaging using tomography.
Prof. Aloke Kumar
IISc Bangalore
Dr. Aloke Kumar received his Bachelors and Masters degrees from the Indian Institute of Technology, Kharagpur, India in 2005 and his Ph.D in Mechanical Engineering from Purdue University, West Lafayette, USA in 2010. His doctoral work is one of the founding works in the area of opto-electrofluidics. His research on opto-electric manipulation of matter in microfluidic systems has been recognized by the scientific community through several awards, including the prestigious DeKarman fellowship. After completing his doctoral work, Dr. Kumar joined the Oak Ridge National Laboratory (ORNL) as a Eugene Wigner Fellow. In this role, Dr. Kumar established a research program focused on understanding bacterial biofilms. After his post-doctoral work, Dr. Kumar joined University of Albertas Mechanical Engineering Department, where he was the Canada Research Chair in Microfluidics for Biological Systems. He recently moved to the Indian Institute of Science, where he is re-establishing his Soft Matter Lab with a focus on bacterial biofilms and polymeric flows. Dr. Kumars academic record boasts a constant pursuit of excellence. He has co-authored over 50 scientific manuscripts (38 peer-reviewed journal articles, 10 book chapters and 2 invited journal articles). He has published in reputed journals like Nanoscale, Lab-on-a-Chip, Langmuir and Physical Review Letters. Eight of his papers have also been journal cover articles (Soft Matter, Lab-on-a-Chip, Applied Physics Letters & Green Chemistry).
Prof. Koushik Viswanathan
IISc Bangalore
Prod. Koushik Viswanathan is an assistant professor at the Indian Institute of Science, Bangalore. He obtained B-Tech and M-Tech degrees in mechanical engineering from IIT Madras, followed by MS and PhD degrees from Purdue University. At IISc, he heads the Laboratory for Advanced Manufacturing and Finishing Processes (LAMFiP) and is interested in problems at the intersection of solid mechanics and materials science.
Course layout
Week 1: Introduction and Historical Context.
Week 2: Vector and Tensor fields in Mechanics.
Week 3: Imaging and Optics.
Week 4: Fluid Flow Visualization (Basics, Shadowgraphy, PIV/PTV).
Week 5: Solid deformation visualization (comparison with fluids, DIC methods).
Week 6: Stress-optic law and photoelasticity for plane stress problems.
Week 7: Tomography methods for volumetric imaging (optical, X-ray).
Week 8: Lab demo and discussion.
Books and references
1. Particle Image Velocimetry – A practical Guide by Raffel, Willter, Wereley and Kompenhans, Springer
2. Principles of Computerized Tomographic Imaging by Avinash Kak and Malcolm Slaney
3. Image Correlation for Shape, Motion and Deformation Measurements: Basic Concepts,Theory and Applications by Schrier, Orteu and Sutton
