About myself

@LAMP 2019 conference, Hiroshima, Japan

Hello, I am Sagar Sarkar. Presently, I am an Assistant Professor in Mechanical Engineering Department, IIT Delhi. I completed my B.Tech (Honours), M.tech and PhD- all from Indian Institute of Technology, Kharagpur. I continued two more years as a Senior Scientific Officer in the same institute where I was involved in developing a system for metal additive manufacturing with facility for real-time process monitoring and its control. The system was indigenously built and is first of its kind. Together with the team, I was also actively involved in other important indigenous developments such as laser assisted cold spray, laser shock deposition etc. I am working broadly in the area of Laser Material Processing for more than 10 years . My research interests include understanding the mechanical properties of additively manufactured parts under dynamic loading conditions mainly fatigue and online process monitoring in laser based additive manufacturing processes to ensure repeatable and reproducible part properties. Also, I am actively involved in other laser material processing applications and open to collaborative research works to develop better understanding of the process.

I strongly encourage undergraduate students to explore the possibilities of taking research as their career. You will be surprised to know what a laser can do and the exciting opportunities ahead in the coming years in the area of Additive Manufacturing/3D printing!!! It is not only about the academic research, but can be a startup too. We need people to join our hands.

I follow an open door policy. You are welcome to discuss your ideas and together we can make it happen.

Research /consultancy projects

Title of the projectSponsoring AgencyDurationRole/involvement
Design and development of a photodiode-based melt pool monitoring system for real-time quality control in laser-based metal additive manufacturing and its allied processesScience and Engineering Research Board2022-2024PI
Indigenous design and fabrication of auxetic vascular stents using the laser powder-bed fusion techniques- a pilot studyMFIRP, IIT Delhi-AIIMS, New Delhi2022-2024Co-PI
Laser Surface Treatment of Martensitic Stainless SteelSulzer Tech India Pvt. Ltd. (headquarter in Switzerland)2019 -2022
Indigenous development of online process monitoring of laser surface hardening, cladding and additive manufacturing and studies on dynamic mechanical behavior of manufactured partsMinistry of Human Resource Development (MHRD) & Department of Heavy Industries (DHI)2017-2022
Professional / Research experience

Assistant ProfessorMechanical Engineering Department; IIT DelhiLaser material processing and additive manufacturing/3D printingJune 2021- present
Senior Scientific OfficerMechanical Engineering Department; IIT KharagpurResearch and development: Laser material processing and additive manufacturingJune 2019- June 2021


PhDMechanical Engineering Department;
IIT Kharagpur
Research Area: Laser Additive Manufacturing2014-2019
Dual degree
(B.Tech (H) and M.Tech)
Mechanical Engineering Department;
IIT Kharagpur
Specialization: Manufacturing Science and Engineering2009-2014

Peer Recognition

• Young Faculty Incentive Fellowship, IIT Delhi [2021-2024]

• DST travel support to attend MATADOR 2017 held in Manchester, UK [2017]
• Branch rank 02 (at the end of five years dual degree course at IIT Kharagpur) [2014]
• Awarded “TKT Srikrishnan Endowment Awards” by IIT Kharagpur for Academic Excellence CGPA 9.61/10 during the academic session 2012-13 and best project work among all the 4th year B.Tech (Honours) as well as 5th year Dual degree students of Department of Mechanical Engineering ,IIT Kharagpur [2013]
• Recipient of “Institute Proficiency Prize” for “Best B.Tech Project” from IIT Kharagpur [2013]
• Recipient of scholarship under “Incentive Scheme for Meritorious Children of Staff Pursuing Professional Courses at Elite Institutes in India ” by State Bank of India (SBI) [2011- 2014]
• Awarded “Merit-Cum-Means (MCM) scholarship” by Ministry of Human Resource & Development (MHRD), India for the academic session 2010-11.

Invited talks

Topic: Effect of Heat Treatments on the Fatigue Life of Laser Powder-Bed Fusion (L-PBF) produced  parts; ONLINE STTP on Additive Manufacturing of Metallic and Non-metallic Components, December 21-27, 2022

Topic: Effect of heat treatment and post-processing techniques on the mechanical properties of laser power bed fusion fabricated 15-5 PH Stainless Steel; International Conference on Laser Assisted Material Processing (LAMP), August 29-31, 2022

Extra academic activities


• UG Student Mentor of 1st year and 2nd year undergraduate students under Student Mentorship Programme which is an initiative taken by Student Welfare Group, IIT Kharagpur for the session February 2012-May 2014.
• Group Leader of the “Literacy Campaign Group, National Service Scheme (NSS), IIT Kharagpur” for the session 2010-2011.
• Member of American Society of Mechanical Engineers (ASME) IIT Kharagpur Student Chapter for the session July 2009 –April 2011.


• Selected as “One of the best NSS volunteers” (number of selections was 2 out of 1400 students and I was one of these two students) and interviewed for Youth Leader India, a national edition of the positive-change magazine Youth Leader. Youth Leader is an official United Nations project for the decade of education and sustainability development. It also holds the four UNESCO status and 5 of its team members have won the United Nations Online Voluntary Award for 2010. http://www.india.youthleader.org/2011/09/efforts-of-two-iit-kgp-studentsinvolved-with-national-service-scheme/


• Awarded certificate for “Best Team Performance” during NSS Annual Camp, 2009 organized by IIT Kharagpur where more than 600 NSS vo lunteers participated and our team won the competition. I was the “Leader” of the team.
• I was featured for making positive change, as a group leader of Literacy Improvement Group, to NSS IIT Kharagpur community in “Anuraag”, the NSS Newsletter.
• Awarded certificate for effort towards excellent community service and continuous effort to encourage the youth to work for the poor and less privileged during “National Youth Week, 12th -19th January, 2011” organized by NSS, IIT Kharagpur.

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