Natarajan Jeyaprakash is an Associate Professor at the Mechanical Engineering Department, Global College of Engineering and Technology, Muscat, Oman. He earned bachelor’s and master’s degrees at Anna University, Chennai, India, in 2006 and 2009, respectively, and a PhD in production engineering in 2018 at the National Institute of Technology, Tiruchirappalli, India. He teaches various postgraduate courses in automotive, mechanical, manufacturing, and laser ultrasound and conducts academic research and consultancy. Govindarajan Prabu is a Postdoctoral Research Associate at the Graduate Institute of Manufacturing Technology, National Taipei University of Technology. He earned MTech and doctoral degrees at the National Institute of Technology, Tiruchirappalli, India. His areas of research include tribology, wear, friction, laser surface treatment, and mechanical characterization. Che‑Hua Yang is a Professor at the Graduate Institute of Manufacturing Technology, National Taipei University of Technology. He earned a bachelor’s degree at the National Taiwan University in 1984 and master’s and PhD degrees in 1989 and 1991, respectively, at Johns Hopkins University. He has previously been Vice President of National Taipei University of Technology and Director of its Additive Manufacturing Center for Mass Customization Production.