Our publications

Research outputs
Journals (Refereed – 21) Conferences (Refereed- 12) Book chapters– 05, Patents filed/granted– 02
Google scholar: h-index: 12, i10-index: 12, Citations: 438 as on 23rd Jan, 2022
For updated profile: https://scholar.google.co.in/citations?user=gzjXB4kAAAAJ&hl=en

Journal Publications

21.	Dipanjan Dey, Sagar Sarkar, Sunil Rawal, Anitesh Kumar Singh, Kalinga Simant Bal, Manideep Khande, Ashish Kumar Nath, Asimava Roy Choudhury, Correlation of real-time thermal history with tribological properties of laser coated NiCrBSi with Ag and WS2 addition, *Surface and Coatings Technology, (2022) , IF: 4.158*
20.	Abhijit Sadhu, Sagar Sarkar, Angshuman Chattopadhyay, Omkar Mypati, Surjya K Pal, Ashish Kumar Nath, Effect of Laser Shock Peening on Micro-structure and Mechanical Properties of Friction Stir Welded CuCrZr sheets, *Materials Science & Engineering: A, 831, 142238, (2022) IF: 5.234,* https://doi.org/10.1016/j.msea.2021.142238
19.	Angshuman Chattopadhyay, Gopinath Muvvala, Sagar Sarkar, Vikranth Racherla, Ashish Kumar Nath, Mitigation of cracks in laser welding of titanium and stainless steel by in-situ nickel interlayer deposition, *Journal of Materials Processing Technology, 300, 117403, (2022) IF: 5.551,* https://doi.org/10.1016/j.jmatprotec.2021.117403
18.	Angshuman Chattopadhyay, Gopinath Muvvala, Sagar Sarkar, Vikranth Racherla, Ashish Kumar Nath, Microstructural, Mechanical and Corrosion Properties of Electron Beam Welded Commercially Pure Titanium after Laser Shock Peening, *The International Journal of Advanced Manufacturing, (2021) IF: 3.226,* https://doi.org/10.1007/s00170-021-07955-x
17.	Harikrishnan Ramadas, Sagar Sarkar, Ashish Kumar Nath, Three-body dry abrasive wear properties of 15-5 precipitation hardening stainless steel produced by laser powder bed fusion process, *Wear,* 470-471, 203623, (2021), IF: 3.892, https://doi.org/10.1016/j.wear.2021.203623
16.	Angshuman Chattopadhyay, Gopinath Muvvala, Sagar Sarkar, Vikranth Racherla, Ashish Kumar Nath, Effect of Laser Shock Peening on Microstructural, Mechanical and Corrosion Properties of Laser Beam Welded Commercially Pure Titanium, *Optics and Laser Technology, 133, 106527, (2021) IF: 3.867,* https://doi.org/10.1016/j.optlastec.2020.106527
15.	Sagar Sarkar, Shreya Mukherjee, Cheruvu Siva Kumar, Ashish Kumar Nath, Effects of heat treatment on microstructure, mechanical and corrosion properties of 15-5 PH stainless steel parts built by selective laser melting process, *Journal of Manufacturing Processes, 50, 279-294, (2020) IF: 5.35,* https://doi.org/10.1016/j.jmapro.2019.12.048
14.	Amit Choudhary, Abhijit Sadhu, Sagar Sarkar, Ashish Kumar Nath, Muvvala Gopinath, Laser surface polishing of NiCrSiBC – 60WC ceramic-metal matrix composite deposited by laser directed energy deposition process, *Surface and Coatings Technology, 404, 126480, (2020) , IF: 4.158,* https://doi.org/10.1016/j.surfcoat.2020.126480
13.	Angshuman Chattopadhyay, Sagar Sarkar, Harikrishnan Ramadas, Ashish Kumar Nath, Effect of active flux MgF2 on weld geometry and joint strength in LBW of titanium, *Materials Today: Proceedings* , 41, 301-306 (2020) Cite score: 1.24 https://doi.org/10.1016/j.matpr.2020.09.285
12.	Bibhu Kalyan Panda, Sagar Sarkar, Ashish Kumar Nath, 2D thermal model of laser cladding process of Inconel 718, *Materials Today: Proceedings* 41, 286-291 (2020) Cite score: 1.24 https://doi.org/10.1016/j.matpr.2020.09.214
11.	Amal M Nair, Muvvala Gopinath, Sagar Sarkar, Ashish Kumar Nath, Real-time detection of cooling rate using pyrometers in tandem in laser material processing and additive manufacturing, *Materials Letters, 277, 128330, (2020), IF: 3.019,* https://doi.org/10.1016/j.matlet.2020.128330
10.	Abhijit Sadhu, Amit Choudhury, Sagar Sarkar, Amal M Nair, Pravanjan Nayak, Pawar Sagar Dadasaheb, Muvvala Gopinath, Surya K Pal, Ashish Kumar Nath, A study on the influence of substrate pre-heating on mitigation of cracks in direct metal laser deposition of NiCrSiBC-60%WC ceramic coating on Inconel 718, *Surface & Coatings Technology, 389, 125646, (2020), IF: 4.158,* https://doi.org/10.1016/j.surfcoat.2020.125646
9.	Sagar Sarkar, Cheruvu Siva Kumar, Ashish Kumar Nath, Effects of different surface modifications on the fatigue life of selective laser melted 15-5 PH stainless steel, *Materials Science & Engineering A, 762, 138109, (2019) IF:* 5.234, https://doi.org/10.1016/j.msea.2019.138109
8.	Sagar Sarkar, Cheruvu Siva Kumar, Ashish Kumar Nath, Effects of heat treatment and build orientations on the fatigue life of selective laser melted 15-5 PH stainless steel, Materials Science & Engineering A, 755, 235-245, (2019) IF: 5.234, https://doi.org/10.1016/j.msea.2019.04.003
7.	Sagar Sarkar, Cheruvu Siva Kumar, Ashish Kumar Nath, Investigation on the mode of failures and fatigue life of selective laser melted stainless steel parts under variable amplitude loading conditions, *Additive Manufacturing, 25, 71-83, (2019) IF: 10.998,* https://doi.org/10.1016/j.addma.2018.10.044
6.	Sagar Sarkar, Cheruvu Siva Kumar, Ashish Kumar Nath, Effect of mean stresses on mode of failures and fatigue life of selective laser melted stainless steel, *Materials Science & Engineering A, 700, 92-106, (2017) IF:* 5.234, https://doi.org/10.1016/j.msea.2017.05.118
5.	Sagar Sarkar, Cheruvu Siva Kumar, Ashish Kumar Nath, Effect of Different Heat Treatments on Mechanical Properties of Laser Sintered Additive Manufactured Parts, *ASME Journal of Manufacturing Science and Engineering, 131(11), 111010-1 to 111010-11, (2017) IF: 3.033,* https://doi.org/10.1115/1.4037437
4.	Sagar Sarkar, Gopinath Muvvala, Shitanshu S. Chakraborty, B Syed, Ashish Kumar Nath, Analysis of temperature and surface hardening of low carbon thin steel sheets using Yb-fiber laser, *Surface and Coatings Technology, 302, 344-358, (2016) IF: 4.158* https://doi.org/10.1016/j.surfcoat.2016.06.045
3.	Alok Choudhary, Sagar Sarkar, Srikar Settur, Manoj K Tiwari, A carbon market sensitive optimization model for integrated forward–reverse logistics, *International Journal of Production Economics, 164, 433-444, (2015) IF: 7.885* https://doi.org/10.1016/j.ijpe.2014.08.015
2.	Pradip Kumar Ray, Ratri Parida, Sagar Sarkar, Ergonomic analysis of construction jobs in India: A biomechanical modelling approach, *Procedia Manufacturing, 3, 4606-4612, (2015) Cite score: 1.794,* https://doi.org/10.1016/j.promfg.2015.07.542
1.	A. K. Nath, D. Patra Karmakar, M. Gopinath, Sagar Sarkar, S. S. Chakraborty, S. Mullick, Y. K. Madhukar, Recent Studies on Laser Material Processing with Fiber Laser at Indian Institute of Technology, Kharagpur, *A Bulletin of the Indian Laser Association*, 27(3), 14-21, (2016).

Conference Publications

12.	Harikrishnan Ramadas, Sagar Sarkar, Angshuman Chattopadhyay, Ashish Kumar Nath, Effect of morphology and particle size distribution on the reusability of 15-5 Precipitation Hardening Stainless Steel powder in Laser Powder Bed Fusion Process, *Current Advances in Mechanical Engineering,* *Select Proceedings of ICRAMERD 2020, Springer Lecture Notes in Mechanical Engineering,* 817-824 (2020) https://www.springer.com/gp/book/9789813347946
11.	Sagar Sarkar, Harikrishnan R., Gopinath Muvvala, Ashish Kumar Nath, Effect of laser shock peening on corrosion properties of laser additive manufactured IN718 superalloy, *Proceedings of LAMP2019 – the 8th International Congress on Laser Advanced Materials Processing*, Hiroshima, Japan (2019)
10.	Abhijit Sadhu, Amit Choudhary, Sagar Sarkar, Pawar Sagar Dadasaheb, Masetty Krishna Chaitanya, Muvvala Gopinath, Surjya K Pal, Ashish Kumar Nath, Laser Surface Polishing of NiCrSiBC-6OKWC Ceramic-Metal Composite Deposited by Direct Metal Laser Deposition, *Proceedings of Visualization in Joining & Welding Science through Advanced Measurements and Simulation (Visual-JW 2019)*, Osaka, Japan (2019)
9.	Sagar Sarkar, Soumya Dubey, Ashish Kumar Nath, Effect of Heat Treatment on Impact Toughness of Selective Laser Melted Stainless Steel Parts, *Proceedings of ASME 2018 Manufacturing Science and Engineering Conference* , Volume 1: Additive Manufacturing; Bio and Sustainable Manufacturing, V001T01A005, College Station, TX, USA (2018) https://doi.org/10.1115/MSEC2018-6418
8.	Sagar Sarkar, Saumya Ranjan Jha, Ashish Kumar Nath, Effect of Heat Treatment on corrosion properties of Selective Laser Melted Stainless Steel Parts, *Proceedings of ASME 2018 Manufacturing Science and Engineering Conference*, Volume 1: Additive Manufacturing; Bio and Sustainable Manufacturing, V001T01A007, College Station, TX, USA (2018) https://doi.org/10.1115/MSEC2018-6429
7.	Sagar Sarkar, Ankit Porwal, Nuthalapati Yaswanth, Ashish Kumar Nath, A Study on Effect of Different Process Parameters on the Quality of Overhang Surface Produced by Selective Laser Melting, *Proceedings of ASME 2018 Manufacturing Science and Engineering Conference*, Volume 1: Additive Manufacturing; Bio and Sustainable Manufacturing, V001T01A006, College Station, TX, USA (2018) https://doi.org/10.1115/MSEC2018-6421
6.	Sagar Sarkar, Ashish Kumar Nath, Water-jet assisted laser surface hardening of medium carbon steel using fiber laser, *Proceedings of ASME 2018 Manufacturing Science and Engineering Conference*, Volume 4: Processes, V004T03A054, College Station, TX, USA (2018) https://doi.org/10.1115/MSEC2018-6457
5.	Sagar Sarkar, Cheruvu Siva Kumar, Ashish Kumar Nath, Effect of Different Heat Treatments on Mechanical Properties of Laser Sintered Additive Manufactured parts, *Proceedings of ASME 2017 Manufacturing Science and Engineering Conference*, 111010, Los Angeles, CA, USA (2017)
4.	Sagar Sarkar, Cheruvu Siva Kumar, Ashish Kumar Nath, Effect of variable amplitude loadings on fatigue life of laser sintered parts, *Proceedings of the 39th International MATADOR Conference*, Springer, Manchester, UK (2017)
3.	Abhishek Kumar, Cheruvu Siva Kumar, Sagar Sarkar, Ashish Kumar Nath, Laser surface re- melting using cylindrical lens on DMLS (additive manufactured) sample, Indo-German workshop on “*Additive Manufacturing of Metals: Current issues and way forward* *(AMM-2019)*”, CSIR NML, Jamshedpur (2019)
2.	Sagar Sarkar, Ankit Porwal, Cheruvu Siva Kumar, Ashish Kumar Nath, Study on the Effect of Different Process Parameters on the Quality of Overhang Surface Produced by Direct Metal Laser Sintering Process, *Proceedings of National Conference on Advanced Functional Materials Processing & Manufacturing* *(NCAFMPM-2017)*, CSIR Durgapur, India (2017)
1.	Sagar Sarkar, Ashish Kumar Nath, Water-jet assisted laser surface hardening of medium carbon steel using fiber laser, *National Laser Symposium*, paper ID 8446, Bhubaneswar, India (2016)

Book Chapters

5.	Gopinath Muvvala, Sagar Sarkar, Ashish Kumar Nath, Laser Cladding of Ni-based superalloys, *Laser Cladding of Metals, Springer (2020) [Invited]*. https://doi.org/10.1007/978-3-030-53195-9_11
4.	Ashish Kumar Nath, Sagar Sarkar, Shitanshu S. Chakraborty, Gopinath Muvvala, Suvradip Mullick, Yuvraj K. Madhukar, Debapriya Patra Karmakar, LASER based manufacturing as a green manufacturing process, *Sustainable Material Forming and Joining, CRC press (2019) [Invited]* https://doi.org/10.1201/9781315163147
3.	Ashish Kumar Nath, Sagar Sarkar, Laser Transformation Hardening of Steel, *Advances in Laser Materials Processing (Second Edition), Elsevier, 257-298 (2018)[Invited]* https://doi.org/10.1016/B978-0-08-101252-9.00011-X
2.	Ratri Parida, Sagar Sarkar, Pradip Kumar Ray, Improving occupational health of Indian construction workers: A biomechanical evaluation approach, *Smart Technologies for Smart Nations*, Springer, Singapore, 195-216 (2016) https://doi.org/10.1007/978-981-287-585-3_13
1.	Ratri Parida, Sagar Sarkar, Pradip Kumar Ray, Selection of alternate work systems to improve occupational health of Indian construction Workers: A Design of Experiment- Based Approach, *Smart Technologies for Smart Nations*, Springer, Singapore, 155-173 (2016) https://doi.org/10.1007/978-981-287-585-3_11

Patents

1	Angshuman Chattopadhyay, Gopinath Muvvala, Sagar Sarkar, Abhijit Sadhu, Vikranth Racherla, Ashish Kumar Nath, Direct Additive Laser Welding of Dissimilar Materials (Patent application no: 202031000073 dated 1^st January, 2020)
2.	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 application no: 202031001870 dated 15^th January, 2020)