Rupinder Singh is a Professor in Department of Mechanical Engineering, National Institute of Technical Teacher Training and Research, Chandigarh. He has received Ph.D in Mechanical Engineering from Thapar Institute of Engineering and Technology Patiala. His area of research is additive manufacturing, composite filament processing, rapid tooling, metal casting and plastic solid waste management. He has co-authored more than 350 science citation indexed research papers, 10 books, more than 100 book chapters, and has presented more than 100 research papers in various national/international journals. His research has been cited more than 8600 times with H index of 44 and google scholar i-10 index of 175. As per the Standford University, He has been listed under world’s top 2% scientist. Ranvijay Kumar is an Assistant Professor in University Center for Research and Development, Chandigarh University. He has received Ph.D in Mechanical Engineering from Punjabi University, Patiala. Additive manufacturing, shape memory polymers, smart materials, friction based welding techniques, advance materials processing, polymer matrix composite preparations, reinforced polymer composites for 3D printing, plastic solid waste management, thermosetting recycling and destructive testing of materials are the skills of Dr. Ranvijay Kumar. He has co-authored more than 50 research papers in science citation index journal, 45 book chapters and has presented 26 research papers in various national/international level conferences. Recently, he has won the silver medal in prestigious CII MILCA award 2020 for his excellent research contribution to society.