Dr. Ram Krishna Upadhyay is currently working as Assistant Professor at the National Rail and Transportation Institute, Vadodara, established by the Ministry of Railway, Government of India. He received his Ph.D. and M.Tech. from the Indian Institute of Technology (ISM) Dhanbad in Mechanical & Mining Machinery Engineering with a broad specialization in Surface Engineering and Tribology. Before joining NRTI Vadodara, Dr. Upadhyay has worked as Postdoctoral Fellow at the Indian Institute of Technology (IIT) Kanpur for over three years. His research interests include lubrication and materials wear for industrial application, tribology of additive manufactured parts, and nanocomposites. He is a recipient of the SERB-ACS NPDF Best Poster Competition Award by the Science and Engineering Research Board, New Delhi, and the American Chemical Society, USA. He published several journal papers, book chapters, edited a book, and completed a project funded by the Science and Engineering Research Board, New Delhi. Dr. Sunil Kumar Sharma is an assistant professor and the assistant program director of the Engineering and Applied Science Department at the National Rail and Transportation Institute Vadodara, established by the Ministry of Railway, Government of India. He received his Ph.D. from the Indian Institute of Technology, Roorkee. He worked at the Non-destructive Evaluation and Structural Health Monitoring Laboratory at C. N. University, South Korea. His research interests are vehicle dynamics, contact mechanics, mechatronics, and real-time software-enabled control systems for high-speed rail vehicles. He published several research articles in national and international journals. Dr. Sharma is also among the top 2% of scientists in a global list compiled by Stanford University, USA.  Dr. Vikram Kumar is currently at Indian Institute of Technology (IIT) Kanpur where he also received his Ph.D. in Mechanical Engineering. His areas of research include polymer and composite coating, wear, friction and lubrication, IC engine tribology, alternative fuels, advanced low-temperature combustion, engine emissions measurement, and particulate characterization. Dr. Kumar has edited 1 book and authored 7 book chapters and 16 research articles in international journals and conferences. He has been awarded with ‘ISEES Best Ph.D. Thesis Award’ (2018) and ‘Senior Research Associateship’ under ‘SCIR-POOL Scientist’ (2018-2021). He is Lifetime Member of ISEES.Mr. Hardikk Valera is pursuing Ph.D. from Indian Institute of Technology (IIT) Kanpur. He completed his M.Tech. and B.Tech. from NIT Jalandhar (India) and Ganpat University, respectively. His research interests include methanol-fueled SI engines, methanol-fueled CI engines, optical diagnostics, fuel spray characterization, and emission control from engines.