Invited Speaker

Dr. V.K.Bupesh Raja

Dr. V.K.Bupesh Raja

Professor and Head, Department of Automobile Engineering,
School of Mechanical Engineering, Sathyabama Institute of Science and Technology, India.
Speech Title: Friction Drilling

Abstract: Friction drilling is the emerging technique of producing hole and also called as flow drilling, thermal drilling and friction stir drilling. Friction drilling is a five step hole making process, where tool is penetrated into the work material. Due to friction, heat is generated between the material and tool thus softening the material. At early stages of sliding the frictional coefficient varies with respective to the load condition. Thrust force will be more in first two stages, and then will be gradually decreasing. Plate thickness less than 4mm is advisable for this method. Unlike traditional drilling, Friction Drilling (FD) is an unconventional hole-making method. FD is a clean and chipless hole making method. Bushing is formed in the material during FD process while tool is forced downwards; bushing height is triple times of the thickness of the material thickness. For assembling the FD drilled components, the bush formation shall aid for alignment and easy fastening. In traditional drilling process the fastening and assembly needs additional components incurring additional manufacturing time and material cost. Feed rate, spindle speed plays a major role in friction drilling process. Torque and thrust force are to be optimizing for getting a better surface finish and good quality hole.

Keywords: Friction, Plastic, Bush, Hole, Heat, Fastening.


Biography: Dr.V.K.Bupesh Raja is Professor and Head at Department of Automobile Engineering, School of Mechanical Engineering, Sathyabama Institute of Science and Technology, Chennai, India. He completed his master’s degree in Computer Aided Design and under graduation in Mechanical Engineering, from University of Madras, Chennai, Tamil Nadu, India, and obtained Ph.D. degree in Mechanical Engineering from Sathyabama University, Chennai, Tamil Nadu, India. He completed his Overseas Research Fellowship (ORF) from Materials Division, Department of Mechanical engineering, National University of Singapore (NUS), Singapore. He has more than 20 years of experience in teaching and research. His current area of research includes advanced Welding Techniques, Super Alloys, Friction drilling, Material Characterization, Laser Material Processing and Surface Modification, Bioimplants, Composites, Geopolymer, Corrosion and Wear. He has published more than 120 papers in International/National journals, and participated and presented more than 130 research papers in International/National conferences. He has successfully coordinated and completed several funded research projects.