**About the Editors**

**Jinyi Lee** studied mechanical design at Chonbuk University, Jeonju, Korea, in 1992. He received his M.S. and Ph.D degrees in mechanical design, and aeronautics, and space engineering from Tohoku University, Sendai, Japan, from 1993 to 1998. Afterwards, he also worked as a scientist at Tohoku University, Iwate University, and Saitama University from 1997 to 2000. He also worked as a research director for Gloria Tech Co.Ltd and Lacomm Co. Ltd, Korea from 2000 to 2003. Since 2003, he has been the director of the IT-based Real Time NDT Center and a professor at Chosun University (Gwangju, Korea). Additionally, he has been a Specially Appointed Visiting Professor, NICHe, Tohoku University (Sendai, Japan). In 2010, 2011, and 2012, he received the Innovation Leader in Korea news maker award; a silver prize from the Military Science and Technologies Conference; and an award for an excellent paper from the KSME, respectively. He is a member of the World Conference on Non-Destructive Testing (WCNDT) and a member of the Korean Society for Nondestructive Testing (KSNT). His research interests include the application of magneto-optical and laser sensors and the development of magnetic cameras so that they can cover a wider range of applications in the field of non-destructive testing. He is the author and co-author of about 200 patents and scientific journals.

**Hoyong Lee**, Ph.D., is a Senior Researcher at Korea Aerospace Industries, LTD (Sachon, South Korea). He previously worked at Gwangju University and the Air Force Research Institute in South Korea. He received his M.S. degree (2005) in structural analysis from Seoul National University and received his Ph.D. (2012) in the mechanical reliability of avionics system from the State University of New York at Binghamton. His research interests are the application of nondestructive inspection methods in the aerospace industry and the development of aircraft structural repair methods. Currently, He is developing nondestructive inspection and structural repair methods at Korea Aerospace Industries, Ltd.

**Azouaou Berkache**, Ph.D., is a postdoctoral researcher at the IT-based Real-Time NDT Center of Chosun University (Gwangju, South Korea). He previously worked at the University Mouloud Mammeri (Tizi-Ouzou, Algeria), where he received his B.S. and M.S. degrees in electrical drive and his PhD degrees in the modeling and in the design of electromagnetic systems in 2013, 2015, and 2019, respectively. His scientific interests are centered on electromagnetic systems, and non-destructive testing as well as the development of evaluation methods for a wide spectrum of applications. To this end, together with Professor Jinyi Lee, he has developed an eddy current test setup and three-dimensional metal grain imaging technique for industry and laboratory applications.
