# Optical Methods for Solid and Fluid Mechanics

- Institution: IISc Bangalore
- Department: Mechanical Engineering
- Taught by: Prof. Aloke Kumar, Prof. Koushik Viswanathan
- Level: Undergraduate
- Language: English
- Subjects: Engineering
- Source: [NPTEL](https://nptel.ac.in/courses/112108316)
- Licence: [CC BY-NC-SA](https://nptel.ac.in/faq) (Non-commercial use only.)
- Syllabus: [at the source](https://nptel.ac.in/courses/112108316)
- Who can watch: Tweens profiles and older (sources give no ratings; placed by Invisible Network from the source's own words)

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.

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.

## Lectures

1. [Introduction](https://invisiblenetwork.ai/learn/nptel/112108316/8580a94cf1aa) (YouTube)
2. [Mathematical Preliminaries I](https://invisiblenetwork.ai/learn/nptel/112108316/ed3c98bd14f9) (YouTube)
3. [Tensors and Deformations](https://invisiblenetwork.ai/learn/nptel/112108316/ee70ce94e8bd) (YouTube)
4. [Lagrangian and Eulerian Perspectives](https://invisiblenetwork.ai/learn/nptel/112108316/c5f427f10e35) (YouTube)
5. [Mathematical Preliminaries II](https://invisiblenetwork.ai/learn/nptel/112108316/72abdf15b273) (YouTube)
6. [Image Processing Preliminaries](https://invisiblenetwork.ai/learn/nptel/112108316/03524810a69a) (YouTube)
7. [Image Processing Operations](https://invisiblenetwork.ai/learn/nptel/112108316/cc2c88d195fc) (YouTube)
8. [Light Matter Interaction I](https://invisiblenetwork.ai/learn/nptel/112108316/00371204aa99) (YouTube)
9. [Lab Demo I: Optical Microscope](https://invisiblenetwork.ai/learn/nptel/112108316/5e888662b4fb) (YouTube)
10. [Optical System: Lenses](https://invisiblenetwork.ai/learn/nptel/112108316/7bb73c2a0a96) (YouTube)
11. [Lab Demo II: Lenses and Camera](https://invisiblenetwork.ai/learn/nptel/112108316/7ad8fec93043) (YouTube)
12. [Light Matter Interaction II(Lab Demostration)](https://invisiblenetwork.ai/learn/nptel/112108316/193827aa06d4) (YouTube)
13. [Light Matter Interaction II(Lab Demostration)](https://invisiblenetwork.ai/learn/nptel/112108316/c4fc2728e9e6) (YouTube)
14. [Tracer Particles for Flow Visualisation](https://invisiblenetwork.ai/learn/nptel/112108316/0f708d0fedf2) (YouTube)
15. [Particle Tracking Velocimetry](https://invisiblenetwork.ai/learn/nptel/112108316/f109bf87c845) (YouTube)
16. [Particle Image Velocimetry I](https://invisiblenetwork.ai/learn/nptel/112108316/ac59d44a19ee) (YouTube)
17. [Particle Image Velocimetry II](https://invisiblenetwork.ai/learn/nptel/112108316/5245dd951ddd) (YouTube)
18. [Particle Image Velocimetry III](https://invisiblenetwork.ai/learn/nptel/112108316/b5b1a2a06046) (YouTube)
19. [Particle Image Velocimetry IV](https://invisiblenetwork.ai/learn/nptel/112108316/631240711a21) (YouTube)
20. [Particle Image Velocimetry V](https://invisiblenetwork.ai/learn/nptel/112108316/caa8b308a3df) (YouTube)
21. [Particle Image Velocimetry VI](https://invisiblenetwork.ai/learn/nptel/112108316/0ed3aa4855b0) (YouTube)
22. [Schlieren and Shadowgraphy](https://invisiblenetwork.ai/learn/nptel/112108316/26e6ba8d16b7) (YouTube)
23. [Lab Demo III: PIV and Schlieren](https://invisiblenetwork.ai/learn/nptel/112108316/d1b57b181dbe) (YouTube)
24. [Introduction to optical methods for solids](https://invisiblenetwork.ai/learn/nptel/112108316/6dfa589dd6ca) (YouTube)
25. [Basics of Digital Image Correlation](https://invisiblenetwork.ai/learn/nptel/112108316/69e3fb977651) (YouTube)
26. [Iterative implementation of DIC](https://invisiblenetwork.ai/learn/nptel/112108316/e0914bba4a54) (YouTube)
27. [Example implementations](https://invisiblenetwork.ai/learn/nptel/112108316/ff601f528aed) (YouTube)
28. [How is a DIC experiment set up?](https://invisiblenetwork.ai/learn/nptel/112108316/bb598936acc1) (YouTube)
29. [DIY(C)!](https://invisiblenetwork.ai/learn/nptel/112108316/8bb13381a468) (YouTube)
30. [Introduction to Photoelasticity](https://invisiblenetwork.ai/learn/nptel/112108316/8bc940e723ed) (YouTube)
31. [Why do we see fringes?](https://invisiblenetwork.ai/learn/nptel/112108316/0fff027824ec) (YouTube)
32. [How does light interact with matter?](https://invisiblenetwork.ai/learn/nptel/112108316/5ed13d890666) (YouTube)
33. [Origin of Birefringence](https://invisiblenetwork.ai/learn/nptel/112108316/798392896dba) (YouTube)
34. [Loaded sample in a polarizer](https://invisiblenetwork.ai/learn/nptel/112108316/dc7a37f25271) (YouTube)
35. [Stress-induced birefringence](https://invisiblenetwork.ai/learn/nptel/112108316/8e2f82a22625) (YouTube)
36. [Analyses of optical paths using matrix methods](https://invisiblenetwork.ai/learn/nptel/112108316/72c8e40180fa) (YouTube)
37. [Putting it all together](https://invisiblenetwork.ai/learn/nptel/112108316/8e7d79ddc3aa) (YouTube)
38. [What is tomography?](https://invisiblenetwork.ai/learn/nptel/112108316/584a65c6f90d) (YouTube)
39. [Signal processing and Fourier methods](https://invisiblenetwork.ai/learn/nptel/112108316/75c5d8ac7c49) (YouTube)
40. [Rays and the Radon transforms](https://invisiblenetwork.ai/learn/nptel/112108316/f4c95bee04e4) (YouTube)
41. [Geometric interpretations](https://invisiblenetwork.ai/learn/nptel/112108316/6c93c73f60d6) (YouTube)
42. [The inverse problem: From Radon transform to 2D cross-section](https://invisiblenetwork.ai/learn/nptel/112108316/26ec4dd6fc94) (YouTube)
43. [Cone beams, parallel beams and the Feldkamp algorithm](https://invisiblenetwork.ai/learn/nptel/112108316/7a5565d5043f) (YouTube)