Dr. Belal F. Yousif is an Associate Professor at the University of Southern Queensland, Australia. He also worked previously at the University of Nottingham as an Associate Professor. Dr. Yousif has experience in teaching and developing several mechanical courses, which are mainly related to static, the strength of materials, machine design elements, tribology, engineering materials, fiber composites, and internal combustion engines. He currently leads the ‘# MEC1201—Engineering Materials’ and ‘# MEC230—Design of Machine Elements’ teaching courses/programs. As for professional memberships, he is a Guest Editor for Materials and Design (ranked A), a member of the editorial board of the International Journal of Surface Engineering and Interdisciplinary Materials Science [IJSEIMS], and a member of the editorial board of the International Journal of Precision Technology. Furthermore, his current research focuses on sustainable systems, design, and tribology, covering the areas of recyclable fiber polymer composites, waste oil as fuel and/or lubricants, and innovative system design.