Research Interest 

1. Additive Manufacturing,  2. Welding and Joining , 3. Material Processing, 4. Friction Stir Cladding,  5. Industry 4.0

Education Details

1.  PhD, 2014-2019, Indian Institute of Technology Kharagpur , India 

Title: Friction Stir Lap Welding of AA6061-T6 and AISI304 in Air and Water Media: Mechanical Studies and Material Characterizations. (Supervisor: Prof Surjya K Pal)

2. M.Tech, 2012-2014, National Institute of Technology Warangal, India

Title: Experimental Study of Cryogenic Machining of AISI5210 Steel Alloy by Using Design of Experiments. (Supervisor : Shri G V Rao)

3.  B.Tech, 2008-2012, B.Tech, Mechanical Engineering, 2008-2012, Biju Patnaik University of Technology Rourkela Odisha 

Publications

Patent:

1. Pal SK, Kumari K, Mahto RP, Sharma V. A Counter Rotating Pin and Shoulder Tool Arrangement for Friction Stir Weld System, Filled Application no. 201631016398.11/05/2016 (Granted 25/02/2022)

Journal:

1. Mahto RP, Bhoje R, Pal SK, Joshi HS, Das S. A study on mechanical properties in friction stir lap welding of AA 6061-T6 and AISI 304. Material Science & Engineering A, 2016;652:136–44. doi:10.1016/j.msea.2015.11.064.  (Elsevier)

2. Mahto RP, Kumar R, Pal SK, Panda SK. A comprehensive study on force , temperature , mechanical properties and micro-structural characterizations in friction stir lap welding of dissimilar materials ( AA6061-T6 and AISI304 ). Journal of Manufacturing Processes 2018;31:624–39. doi:10.1016/j.jmapro.2017.12.017,  (Elsevier)

3.  Parikh C, Ranjan R, Khan AR, Jain R, Mahto RP, Chakravarty D, et al. Volumetric defect analysis in friction stir welding based on three dimensional reconstructed images. Journal of Manufacturing Processes,  2017;29:96–112. doi:10.1016/j.jmapro.2017.07.006.  (Elsevier)

4.  Ranjan R, Khan AR, Parikh C, Jain R, Mahto RP, Pal S, et al. Classification and identification of surface defects in friction stir welding: An image processing approach. Journal of Manufacturing Processes,  2016;22:237–53. doi:10.1016/j.jmapro.2016.03.009.  (Elsevier)

5. Sahu SK, Mishra D, Mahto RP, Sharma VM, Pal SK, Pal K, et al. Friction stir welding of polypropylene sheet. Engineering Science and Technology, An International Journal , 2018;21:245–54. doi:10.1016/j.jestch.2018.03.002.  (Elsevier)

6.  Sharma A, Sagar S, Mahto RP, Sahoo B, Pal SK, Paul J. Surface modification of Al6061 by graphene impregnation through a powder metallurgy assisted friction surfacing. Surface & Coatings Technology 2018;337:12–23. doi:10.1016/j.surfcoat.2017.12.059.  (Elsevier)

7.  RB Roy, A Ghosh, S Bhattacharyya, Mahto RP, K Kumari, SK Pal, S Pal. Weld defect identification in friction stir welding through optimized wavelet transformation of signals and validation through X-ray micro-CT scan, The International Journal of Advanced Manufacturing Technology 99 (1-4), 623-633 . 10.1007/s00170-018-2519-3 (Elsevier)

8.  Mahto RP, Anishetty S, Sarkar A, Mypati O, Pal SK, Majumdar JD. Interfacial Microstructural and Corrosion Characterizations of Friction Stir Welded AA6061-T6 and AISI304 Materials. Metals and Materials International   2018. 752–767,  doi:10.1007/s12540-018-00222-x.  (Springer)

9. Sahu SK, Pal K, Mahto RP, Dash P. Monitoring of friction stir welding for dissimilar Al6063 alloy to polypropylene using sensor signals.The International Journal of Advanced Manufacturing Technology, 104, 159–177 (2019).doi.org/10.1007/s00170- 019-03855-3. (Springer)

10.  Sharma A, Tripathi A, Narsimhachary D, Mahto RP, Paul J. Surface alteration of aluminium alloy by an exfoliated graphitic tribolayer during friction surfacing using a consumable graphite rich tool. Surface Topography: Metrology and Properties; 7. doi:10.1088/2051-672X/ab4826.  (IOP)

11. Mahto RP, Gupta C, Kinjawadekar M, Meena A, Pal SK. Weldability of AA6061-T6 and AISI 304 by underwater friction stir welding. Journal of Manufacturing Processes 2019;38:370–86. doi:10.1016/j.jmapro.2019.01.028.   (Elsevier)

12.  Mahto RP, Kumar R, Pal SK. Characterizations of weld defects, intermetallic compounds and mechanical properties of friction stir lap welded dissimilar alloys. Materials Characterization, 2020;160. doi:10.1016/j.matchar.2019.110115.  (Elsevier) 

13.  Mahto RP, Pal SK. Friction Stir Welding of Dissimilar Materials: An Investigation of Micro structure and Nano-Indentation Study. Journal of Manufacturing Processes 2020;55:103–18. doi.org/10.1016/j.jmapro.2020.03.050.   (Elsevier)

14.  Iqbal MP, Tripathi A, Jain R, Mahto RP, Pal SK, Mandal P. Numerical modelling of microstructure in friction stir welding of aluminium alloys. International Journal of Mechanical Sciences,  2020;185. doi:10.1016/j.ijmecsci.2020.105882.  (Elsevier) 

15. Sahu SK, Mahto RP,Pal K. Investigation on Mechanical Behavior of Friction Stir Welded Nylon-6 Using Temperature Signatures. Journal of Materials Engineering and Performance, 2020;1991:1–8. doi:10.1007/s11665-020-05030-2 .  (Springer)

16. Mahto RP, Rout M, Pal SK. Mechanism of microstructure evolution and grain growth in friction stir welding of AA6061-T6 and AISI304 in air and water media. Materials Chemistry and Physics, 2021, 125081, doi.org/10.1016/j.matchemphys.2021.125081.  (Elsevier)

17. Singh VP, Kumar D, Mahto RP, Kuriachen B,  Microstructural and Mechanical Behavior of Friction-Stir-Welded AA6061-T6 and AZ31 Alloys with Improved Electrochemical Corrosion, Journal of Materials Engineering and Performance, 1-20, 2022 (Springer)

18. Jain R, H Soni, Mahto RP, BN Sahoo, An insight into high-temperature deformation mechanism of magnesium in-situ composite through development of Johnson-Cook and constitutive model, International Journal of Lightweight Materials and Manufacture, Pages 574-588, Volume 6, Issue 4, 2023. (Elsevier)

19. Attah BI , Lawal SA, Bala KC, Ikumapayi OM, O Adedipe, Mahto RP, Akinlabi ET, Optimization and numerical analysis of friction stir welding parameters of AA7075-T651 and AA 1200-H19 using tapered tool, International Journal on Interactive Design and Manufacturing (IJIDeM), 1-15, 2024 (Springer).

20. Mahto RP, Iqbal MP, Kumari K, Pal SK,  Control of the Weld Heterogeneity by using A Novel Counter Variable Pin Shoulder Rotation Friction Stir Welding A Simulation and Experimental study, Journal of Manufacturing Science and Engineering, 1-39, MANU-23-1763, 2024. (ASME)

Book Chapters:

1. Kishor G, Mahto RP, Mugada KK, Assessment of defects in solid-state additive manufacturing through conventional methods and sensor-based data, Solid State Additive Manufacturing, CRC Press, 184-213, 2024.

2. Mahto RP, Rout M, Challenges and Prospects of Welding 4.0 Adoption: Implication for Emerging Economics, Smart Technologies for Improved Performance of Manufacturing Systems and Services, CRC Press, Pages 71-93, 2024.

3. Mahto RP., Kinjawadekar M., Gupta C. PS. Effect of Pin Diameter in Underwater Friction Stir Lap Welding of Dissimilar Materials: AA6061-T6 and AISI304. Adv Addit Manuf Joining Lect Notes Multidiscip Ind Eng Springer, Singapore 2020:487–96.  

4. Mishra D, Sahu SK, Mahto RP, Pal SK. Strengthening and Joining by Plastic Deformation. Springer Singapore; 2019. doi:10.1007/978-981-13-0378-4. 

5. Sahu S, Thorat O., Mahto R.P., Pal S.K., Srirangam P. (2019) A Review and Case Study on Mechanical Properties and Microstructure Evolution in Magnesium–Steel Friction Stir Welding. In: Joshi V., Jordon J., Orlov D., Neelameggham N. (eds) Magnesium Technology 2019. The Minerals, Metals and Materials Series. Springer, Cham. https://doi.org/10.1007/978-3-030-05789-3-17. 

6. Nayak S.S., Mahto R.P., Pal S.K., P. Srirangam, Microstructure and Texture in Welding: A Case Study on Friction Stir Welding, Springer International Publishing, 2021. doi:10.1007/978-3-030-63986-0-6. 

Conference Proceedings:

1. Mahto RP, A Dutta, D Mishra, Prediction of Weld Defects in Underwater Friction Stir Welding of Dissimillar Materials, ASME 2022, International Manufacturing Science and Engineering, June 2022, Indiana USA.

2. Mahto RP, Pal SK  , Friction Stir Lap Welding of Thin AA6061-T6 and AISI304 Sheets at Different Values of Pin Penetrations, ASME 2018 13th International Manufacturing Science and Engineering, June 2017, Texas, USA. 

3. Mahto RP, Pal SK  , A Nano-Indentation study on Intermetallic compound in Friction Stir Welding of AA6061-T6 and AISI304 , id: ID183 40th International MATADOR Conference on Advanced Manufacturing, June 2019, Hangzhou, China.

4.  Mahto RP , Gaikwad J, Kumar R, Pal SK, Friction stir lap welding of AA6061-T6 and AISI304: Mechanical and metallurgical properties of stir zone, Asia Steel International Conference 2018, February 2018 Bhubaneswar, India

5. Kumari K , Mahto RP, Pal SK, Singh SB, Comparative Study on Effect of Counter-rotating Twin Tool and Single Tool on Temperature Rise during Friction Stir Welding. All India Manufacturing Technology, Design and Research Conference, 2016, Pune, India 

6. Mahto RP, Kinjawadekar M, Gupta C, Pal SK, "Effect of pin diameter in underwater friction stir lap welding of dissimilar materials: AA6061-T6 and AISI304 ", Materials Processing - All India Manufacturing Technology, Design and Research Conference, 2018. December Chennai, India  

Reviewer:

1. Journal of Manufacturing Science and Engineering (ASME)

2. Journal of Manufacturing Processes (Elsevier) 

3. Journal of Advanced Manufacturing Systems (World Scientific Publishing )

Professional Experience 

1. Working as Assistant Professor in Department of Mechanical Engineering, Sardar Vallabhbhai National Institute of Technology (SVNIT), Surat, Gujarat, India (20/05/2021 - Present).

2. T Faculty, Department of Mechanical Engineering, Indian Institute of Engineering Science and Technology (IIEST), Shibpur, Oct 2020-May 2021.

3. Project Staff, Friction Stir Welding Lab, Indian Institute of Technology Kharagpur, June 2020-August 2020