**About the Editor**

**Yeon-Gil Jung** is a professor at the School of Materials Science and Engineering, Department of Materials Convergence and System Engineering, Changwon National University, Republic of Korea. He received his Ph.D. degree in Department of Inorganic Materials Science and Engineering from the Hanyang University, Republic of Korea, in 1996. His Ph.D. work mainly focused on the fabrication and residual stress of zirconia/metal functionally gradient materials. After that, he studied material property evaluation using Hertzian Indentation at NIST (National Institute Standard and Technology) with Dr. Brian Lawn during the period 1997–1999. He joined Changwon National University in 1999. He has been a visiting scholar and research professor at Indiana University–Purdue University Indianapolis during the period 2013–2017. His current research involves the microstructure design and property evaluation in thermal barrier coatings for gas turbine applications. He has established different evaluation techniques to verify the comprehensive reliability and lifetime performance.
