Laser Material Processing and Additive Manufacturing Group
Dr. Sagar Sarkar
Associate Professor
Department of Mechanical Engineering
IIT Delhi
Interests:
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Additive Manufacturing
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Laser Material Processing
Research Areas
AI and ML in Additive Manufacturing
Design for additive manufacturing
Materials for additive manufacturing
Modeling and Simulations
Post-processing
Real-time monitoring and Control
Software development
Innovative processes, optics design and applications
Bio
Dr. Sagar Sarkar
Associate Professor, Department of Mechanical Engineering, IIT Delhi
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Dr. Sagar Sarkar's research focuses on laser material processing, additive manufacturing, process monitoring and control, and the mechanical behavior of advanced manufactured materials.
He completed his B.Tech (Honours) - Dual Degree and Ph.D. at IIT Kharagpur, where he later served as a Senior Scientific Officer. In this role, he led the development of an indigenous metal additive manufacturing system with real-time process monitoring and control, and contributed to the development of laser-assisted cold spray and laser shock deposition systems.
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His current work explores the behavior of additively manufactured materials under dynamic loading including fatigue and durability alongside intelligent online monitoring techniques for ensuring process reliability and part quality. His broader research interests span laser-based manufacturing technologies, advanced materials processing, and the integration of sensing, automation, and data-driven methods in manufacturing systems.
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Through collaborations with academia, research organizations, and industry, Dr. Sarkar works to translate fundamental research into scalable manufacturing solutions with real-world industrial impact.
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News + Media
June 2026 Huge success of Session 1 of IFAM Network Webinar on Thermal Spray for Advanced Surface Engineering and Sustainable Manufacturing! - https://ifamschool.fi
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Nov 2024 Huge success of first-ever Indo-Finnish Winter School on Additive Manufacturing at IIT Delhi - https://ifamschool.fi/
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Upcoming Events:-
Feb 2027 IFAM webinar session and the 2nd IFAM Winter School!
Events
July 2026 Ruchi Sharma joined DMS group of University of Turku, Finland as visiting researcher
February 2026 Ananya Nath joined as Project Worker in University of Turku, Finland
August 2024 Debanjan Das joined DMS group of University of Turku, Finland as visiting researcher
July 2024 Ananya Nath joined DMS group of University of Turku, Finland as visiting researcher
March 2023 Ananya Nath has been awarded Prime Minister's Research Fellowship [PMRF]
October 2022 Pritam Patra has been awarded Prime Minister's Research Fellowship [PMRF]
PhD Achievements
May 2026 Neelakshi Rastogi (B.Tech, NIT kurukshetra) and Shubhamdeep Dhal (M.Tech) has been awarded Summer Research Fellowship Programme (SRFP 2026)
Feb 2025 Singana Sri Krishna Sai (B.Tech) and Sidhant Nair (B.Tech) has been awarded Summer Undergraduate Research Award (SURA 2024)
April 2024 Sanchit (B.Tech) has been awarded Summer Undergraduate Research Award (SURA 2023)
May 2023 Navneet Thakur (M.Tech, PEC, Chandigarh) has been awarded Summer Research Fellowship Programme (SRFP 2023)
B.Tech Achievements
June 2025 Pritam Patra presented in Materials today conference in Sitges, Spain
Sep 2025 Group Presented their work in ASME IMECE, Hydrabad
Conferences
Professor Details
Education
2009-2014
IIT Kharagpur
Dual degree
(B.Tech (Honours) and M.Tech)
2014-2019
IIT Kharagpur
PhD
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Research Interest
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Laser Material Processing
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Laser Additive Manufacturing
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Online Process Monitoring and Control
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AI and ML in Additive Manufacturing
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Fatigue and Fracture in Additive Manufacturing
Honors + Awards
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Editorial Board Member, Nature Scientific Reports [2025-Present]
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Young Faculty Incentive Fellowship, IIT Delhi [2021-2024]
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DST travel support to attend MATADOR 2017 held in Manchester, UK [2017]
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Branch rank 02 at IIT Kharagpur [2014]
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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]
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Recipient of “Institute Proficiency Prize” for “Best B.Tech Project” from IIT Kharagpur [2013]
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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]
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Awarded “Merit-Cum-Means (MCM) scholarship” by Ministry of Human Resource & Development (MHRD), India for the academic session 2010-11.
Related Experience
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2026-Present, Associate Professor, Mechanical Engineering Department; IIT Delhi
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2021-2026, Assistant Professor, Mechanical Engineering Department; IIT Delhi
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2019-2021, Senior Scientific Officer, Mechanical Engineering Department; IIT Kharagpur
Life Member
Indian Laser Association
IIT Service
Indo-Finnish Winter School on Additive Manufacturing (IFAM 2024) ; Host: University of Turku, Finland, Co-host: IIT Delhi, FICORE, Nov 2024
Metal Additive Manufacturing: Fundamentals and Applications; SERB Karyashala, IIT Delhi, May 2024
One-Day Training Program on CNC Integrated Hybrid Metal 3D Printer, SATHI IIT Delhi, February 2024
Materialise Mimics Innovation Course, Materialise, Venue: IIT Delhi, November 2023
Member of Committee
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Coordinator, M.Tech Program (Production) [2025–Present]
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B.Tech Project Evaluation Committee [2025–26]
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Academic Unit Wellness Committee [2025–26]
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Lab In-charge, Advanced Manufacturing Laboratory-I [2024–Present]
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In-charge, CNC Integrated Hybrid Metal 3D Printer (SATHI, IIT Delhi) [2023–Present]
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Advisor, Undergraduate Student (ME2-2023 entry batch) [2023–Present]
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In-charge, Timetable and Examination (Department) [2023–25]
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Department Space Management Committee [2023–24]
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Institute Representative for JEE (Advanced) [2023–25]
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Institute Representative for GATE [2022–25]
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Department Research Committee [2022–Present]
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Co-Lab In-charge, IDM (D.F.M.) Lab [2022–Present]
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Web Committee [2022–24]
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Group of Post-graduate Students (GPS) [2022–24]
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M.Tech Projects Evaluation and Admission Committees [2022–23]
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Seminar Committee [2022–23]
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Member, Proctorial Team [2021–25]
Professional Service
Institute Representative for GATE [2022-2026], JEE (Advanced) [2023-2025]
Member of Proctorial Team for the sessions [2021-2025]
In-charge: Timetable and Examination [2023-25]
Lab in-charge: Advanced Manufacturing Laboratory-I
Co-lab In-charge: IDM (D.F.M.) Lab
Advisor : Undergraduate Student [ME2-2023 entry batch]
Teaching
Regular semester courses
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Major Project Part- 2 (MCD882) : Spring 2026
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Metrology & Quality Assurance (MCL134) : Autumn 2025,
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Seminar Course – III (MCQ303) : Autumn 2025
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Major Project Part-1 (MCD881) : Autumn 2025
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Welding and Allied Processes (MCL135) : Autumn 2024
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Product Realization through Manufacturing (MCP101) : Spring 2024, Autumn 2024
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Additive Manufacturing (MCL796) : Autumn 2022, Autumn 2023
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Near Net Shape Manufacturing (MEL2021/MCL133) : Spring 2022, Spring 2023, Autumn 2026
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Surface Engineering (MCL788) : Autumn 2022
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Experimental Methods (MCL705) : Spring 2022, Spring 2023
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Seminar Course (MCQ303) : Autumn 2022
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CAM and Automation (MCL431) : Autumn 2021
Post Graduate Program for Executives – Visionary Leadership for Manufacturing (PGPEX –VLFM)​
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CAD/CAM and Numerical Control (VLM108) : Spring 2023, Spring 2024, Spring 2026
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AI & ML for Manufacturing Management (VLM118) : Spring 2023
Publications
Patents
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Angshuman Chattopadhyay, Gopinath Muvvala, Sagar Sarkar, Abhijit Sadhu, Vikranth Racherla, Ashish Kumar Nath, Direct Additive Laser Welding of Dissimilar Materials [Patent No. 559411]
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Ashish Kumar Nath, Gopinath Muvvala, Amal M Nair, Sagar Sarkar, System for Real- time monitoring and control of thermal history for laser based material processing [Patent No. 54188]