Tribology

His research mainly focuses on the stability aspects of different types of hydrodynamic bearings. Some of the noteworthy studies in this area are:

  • Effect of fluid inertia on the stability of oil bearings
  • Stability of multi-lobe bearings, stability and dynamic characteristics of a flexible rotor supported on hydrodynamic bearings
  • Dynamic characterisation of a flexible rotor supported on porous oil bearings
  • Stability of textured slider and journal bearings, stability of gas foil bearings (GFBs)
  • Performance analysis of textured journal bearings
  • Performance analysis of hydrodynamic journal bearings using mass conservation (JFO) boundary condition
  • Effect of Non-Newtonian Lubricants on the Performance of Two-Axial Groove and Multi-Lobe Pressure Dam Bearing


Duct Acoustics

  • Bulk reaction modeling of ducts with and without mean flow
  • Bulk reaction modeling of sound propagation through circular dissipative ducts backed by an air gap


Mechanical System Design

Some of the noteworthy studies in this area are:

  • Design and development of five-speed automated manual transmission for a midsize car
  • Computer aided analysis and design of high speed ball and roller bearings
  • Improvisation of heavy duty Bicycle
  • Improvisation of Dryer for drying crops & fruits
  • Improvisation of pirn winding machine for both power-loom & hand-loom
  • Improvisation of hank to bobbin machine for both power-loom & hand-loom
  • Improvisation of sectional warping machine for both power-loom & hand-loom
  • Improvisation of potter’s wheel


Rural Technology

He is also actively involved with the School of Agro and Rural Technology, IIT-Guwahati. He has contributed immensely to developing many low-cost, easy-to-maintain implements/machinery for rural masses. A few noteworthy contributions as Coordinator of RuTAG-IITG are listed below: Design and Development of

  • Eri Cocoon Opener
  • High Capacity Improvised Bicycle
  • Feed Block Making Machine for Yak and Cattle
  • Mechanized Production of Muga Fabric
  • Bamboo Charcoal and Bamboo Vinegar Production Technology
  • Pulp Pressing Machine for the production of Sanitary Napkin
  • Betel Nut Cutting Machine
  • Hank to Bobbin Machine
  • Pirn Winding Machine
  • Sectional Warping Machine Implementing Patented Technology in the Mechanized Production of Plain Muga Fabric in collaboration with RuTAG-NE and NEDFi is one of the most successful and challenging tasks.
Most of the products mentioned above have attracted artisans and entrepreneurs. The latest success is the Feed Block Making Machine, which was adopted by National Research Centre on Yak - ICAR, Arunachal Pradesh, and five machines were distributed among Yak farmers. National Research Centre on Mithun - ICAR, Nagaland, also implemented it for Mithun. Many entrepreneurs have shown interest in going for its commercial production.