Megavannan Mani a, M Thiyagu a, Pradeep Kumar Krishnan b a Institute of Mechanical Engineering, Saveetha School of Engineering, Saveetha Institute of Medical and Technical Sciences, Saveetha University, Chennai, Tamil Nadu 602 105, India b Department of Mechanical and Industrial Engineering, College of Engineering, National University of Science and Technology, P.O. Box 2322, CPO Seeb...