Indian Institute of Technology, Patna

Dr. Subrata Kumar

Dr. Subrata Kumar

Associate Professor

Ph.D, IIT Kharagpur

                                Ph: +91-612-302 8039
                            

                                subrata[*AT]iitp.ac.in
                            

Research Areas

Heat transfer, Laser Material Processing, Flow of Granular Materials, CFD

Courses taught at IIT P

UG Courses: Heat and Mass Transfer Applied Thermodynamics I Kinematics of Machinery Advanced Solid Mechanics Fluid Mechanics II PG Courses: Advanced Heat Transfer Advanced Manufacturing Processes Computational Methods in Mechanical Engineering Elective Courses: Laser Material Processing Computational Fluid Dynamics Aerodynamics

Students

Sr. No.	Photo	Area of Reasearch	Degree
1	Shashi Prakash

Publications / Journals / Conferences

Book Chapters:
- Shashi Prakash and Subrata Kumar, Microchannel Fabrication via Direct Laser Writing, Microfabrication and Precision Engineering: Research & Development, 163-187, Woodhead Publishing, 2017.
- Shashi Prakash and Subrata Kumar, Energy Based Analysis of Laser Microchanneling Process on Polymethyl Methacrylate (PMMA), Lasers Based Manufacturing, 239-253, Springer India, 2015.
International Journal Publications:
- Shashi Prakash and Subrata Kumar, Pulse smearing and profile generation in CO2 laser micromachining on PMMA via raster scanning, Journal of Manufacturing Processes, 31, 116-123, 2018, Elsevier.
- Shashi Prakash and Subrata Kumar, Fabrication of rectangular cross-sectional microchannels on PMMA with CO2 laser and underwater fabricated copper mask, Optics & Laser Technology, 94, 180-192, 2017, Elsevier.
- Shashi Prakash and Subrata Kumar, Experimental investigations and analytical modeling of multi-pass CO2 laser processing on PMMA, Precision Engineering, 49, 220-234, 2017, Elsevier. Shashi Prakash and Subrata Kumar, Experimental and theoretical analysis of defocused CO2 laser microchanneling on PMMA for enhanced surface finish, Journal of Micromechanics and Microengineering, 27(2), 1-15, 2017, IOP.
- S. Mandal, S. Kumar, P. Bhargava and C. P. Paul, Analysis of discontinuous bead formation by PTAW process, Materials and Manufacturing Processes, 31, 2181-2185, 2016, Taylor & Francis.
- Shashi Prakash and Subrata Kumar, Profile and depth prediction in single-pass and two-pass CO2 laser microchanneling processes, Journal of Micromechanics and Microengineering, 25(3), 1-10, 2015, IOP. (Most Cited Author Award, 2018)
- Shashi Prakash and Subrata Kumar, Fabrication of microchannels on transparent PMMA using CO2 Laser (10.6 μm) for microfluidic applications: An experimental investigation, International Journal of Precision Engineering and Manufacturing, 16(2), 361-366, 2015, KSPE and Springer. (Most Cited Article Award, 2018)
- S. Mandal, S. Kumar, P. Bhargava, C. H. Premsingh, C. P. Paul and L. M. Kukreja, An Experimental investigation and analysis of PTAW process, Materials and Manufacturing Processes, 30, 1131-1137, 2015, Taylor & Francis.
- S. Mandal, S. Kumar, P. Bhargava, C. H. Premsingh, C. P. Paul and L. M. Kukreja, An analysis on bead characteristics in material deposition by PTAW process, Applied Mechanics and Materials, 592, 33-37, 2014, Trans Tech.
- Shashi Prakash and Subrata Kumar, Fabrication of microchannels: A review, Proc. Instn Mech. Engrs Part B: J. Engineering Manufacture, 229(8), 1273-1288, 2014, SAGE.
- S. Kumar, S. Roy, C. P. Paul and A. K. Nath, A three dimensional conduction heat transfer model for laser cladding process, Numerical Heat Transfer B : Fundamentals, 53, 271-287, 2008, Taylor & Francis.
- Subrata Kumar and Subhransu Roy, Development of theoretical process map for laser cladding using two-dimensional conduction heat transfer model, Computational Materials Science, 41(4), 457-466, 2008, Elsevier.
- Subrata Kumar and Subhransu Roy, The effect of Marangoni-Rayleigh-Benard convection on the process parameters in blown powder laser cladding process - A numerical investigation, Numerical Heat Transfer A: Applications, 50(7), 689-704, 2006, Taylor & Francis.
- Subrata Kumar and Subhransu Roy, Development of theoretical process maps to study the role of powder preheating in laser cladding, Computational Materials Science, 37, 425-433, 2006, Elsevier.
- Subrata Kumar and Subhransu Roy, A parametric study of a blown powder laser cladding and alloying process using two-dimensional conduction model, Proc. Instn Mech. Engrs Part C: J. Mechanical Engineering Science, 218, 703-709, 2004, SAGE.

ME

Dr. Subrata Kumar