Polymer Assisted Abrasive Finishing Processes

By Prof. Mamilla Ravi Sankar   |   IIT Tirupati
Learners enrolled: 242
Micro and Nano finishing is one of the basic courses for the mechanical undergraduate students. This process comes under the subtractive manufacturing processes where in material is removed in micro to nano range. This course gives the basic understanding of the various polymer assisted abrasive micro to nano finishing processes and its physics. The mentioned syllabus is systematic order to understand gradually, what is the importance of surface finish, how the polymers supports the abrasive particles to finish the workpiece surface to nano level. This course mostly deals with abrasive flow finishing process where polymer rheological abrasive medium/fluids are used achieve nano surface roughness. This course also gives emphasis on polymer rheology and its effect on nano finishing. This course is systemically arranged and taught in smooth as well as clear way so that students understand easily.

BE/B.Tech, ME/M.Tech, PHD (Mechanical Engineering, Production Engineering). Faculty who teaches manufacturing.

Course Status : Completed
Course Type : Elective
Duration : 4 weeks
Category :
  • Mechanical Engineering
Credit Points : 1
Level : Undergraduate/Postgraduate
Start Date : 25 Jul 2022
End Date : 19 Aug 2022
Enrollment Ends : 08 Aug 2022
Exam Date : 25 Sep 2022 IST

Note: This exam date is subjected to change based on seat availability. You can check final exam date on your hall ticket.

Page Visits

Course layout

Week 1  :  Introduction to Polymer Assisted Abrasive Finishing Processes, Importance of Mirco to Nano Finishing and Surface roughness representation, Finishing with polymer grinding wheels and polymer medium for vibratory bowl finishing
Week 2 :  Polymer abrasive medium for vibratory bowl finishing and Pitch Polishing, Polymer Pad and Chemo-mechanical Polishing, Elastic Emission and Elasto Abrasive Finishing
Week 3  : Abrasive Flow Machining and Finishing, Polymer Rheological Abrasive Medium/ Fluids for Finishing: Rheology and Tribology, Active abrasive particles and finishing forces during finishing using Polymer assisted Abrasives
Week 4  :  Advances in Abrasive Flow Finishing: DBGAFF, Spiral Polishing, CFAAFM, R-AFF, Micro AFF, Vibrations assisted AFF, Electro AFF process, Modeling of Polymer rheological abrasive medium for finishing, Finishing of Bio Implants: Knee implant, Hip implants.

Books and references

  1. M. C. Shaw, Principles of Abrasive Processing, Oxford University Press, 1996.
  2. VK Jain, Micromanufacturing Processes, CRC press, 2012.
  3. Jain VK, Nanofinishing Science and Technology: Basic and Advanced Finishing and Polishing Processes, CRC Press, 2016.
  4. G. K. Lal, Introduction to Machining Science, New Age International Publishers, 2007.

Instructor bio

Prof. Mamilla Ravi Sankar

IIT Tirupati
Dr. Mamilla Ravi Sankar is currently an Assistant Professor in the Department of Mechanical Engineering, IIT Guwahati. He did his B.Tech from Sri Venkateswara University, Tirupati, and M.Tech as well as PhD from IIT Kanpur. His research group is focus on Sustainable Manufacturing, Eco-friendly Cutting fluids, Coatings, Advanced Manufacturing, Tribology and Rheology. MRS Lab also involves in development of lab scale Innovations to Commercial Manufacturing Products. He has published over 30 research articles in internationally reputed journals, 2 Patents, 2 Edited Books and 6 Book chapters. He is recipient of prestigious awards such as Institution of Engineers India (IEI) Young Engineers Award-2015 in Production Engineering, Indian Society for Advancement in Materials and Process Engineering (ISAMPE)-2011 and finalist of Indian National Academy of Engineering (INAE) Young Engineer Award-2014. Apart from academic awards, he is also received Institute Blues (Outstanding Sports Personality) of IIT Kanpur for the year 2009.

Course certificate

The course is free to enroll and learn from. But if you want a certificate, you have to register and write the proctored exam conducted by us in person at any of the designated exam centres.
The exam is optional for a fee of Rs 1000/- (Rupees one thousand only).
Date and Time of Exams: 25 September 2022 Morning session 9am to 12 noon; Afternoon Session 2pm to 5pm.
Registration url: Announcements will be made when the registration form is open for registrations.
The online registration form has to be filled and the certification exam fee needs to be paid. More details will be made available when the exam registration form is published. If there are any changes, it will be mentioned then.
Please check the form for more details on the cities where the exams will be held, the conditions you agree to when you fill the form etc.


Average assignment score = 25% of average of best 3 assignments out of the total 4 assignments given in the course.
Exam score = 75% of the proctored certification exam score out of 100

Final score = Average assignment score + Exam score

YOU WILL BE ELIGIBLE FOR A CERTIFICATE ONLY IF AVERAGE ASSIGNMENT SCORE >=10/25 AND EXAM SCORE >= 30/75. If one of the 2 criteria is not met, you will not get the certificate even if the Final score >= 40/100.

Certificate will have your name, photograph and the score in the final exam with the breakup.It will have the logos of NPTEL and IIT Tirupati. It will be e-verifiable at nptel.ac.in/noc.

Only the e-certificate will be made available. Hard copies will not be dispatched.

Once again, thanks for your interest in our online courses and certification. Happy learning.

- NPTEL team

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