The 50th volume of "International Journal of Engineering Research in Africa" contains peer-reviewed manuscripts reflecting the research results in the fields of materials science, applied mechanics and mechanical engineering. Such issues as Steel Reinforcement, Strain Based Approach, Temperature, Thermo-Physical Properties, Vehicle Dynamics, Water Resources are raised in the volume. The presented scientific papers can be appreciated by the majority of engineers, researchers, academic teachers and students majoring in the fields of engineering science.

We are glad to present our readers with the 40th volume of International Journal of Engineering Research in Africa. This volume contains articles describing the research results in the fields of materials science, mechanical engineering, power distribution and power control, construction materials and technologies, technological processes in the wastewater treatment and industrial engineering. The articles will be useful for many engineers as well as for academic teachers and students majoring in these fields of engineering science.

This periodical edition includes peer-reviewed papers based on results of scientific research and engineering solutions in different areas of modern engineering science.

Automation and Control of Mechanical Systems and Technological Processes Special topic volume with invited peer reviewed papers only.

This periodical edition includes peer-reviewed papers based on results of scientific research and engineering solutions in different areas of modern engineering science.

Special topic volume with invited peer reviewed papers only

This book is the proceeding of the International Conference on Sustainable Engineering Development and Technological Innovation (ICSEDTI 2022) that was successfully held on 11-13 October 2022 using an hybrid platform. The conference is themed “Sustainable empowerment of innovative solutions through the development of integrated scientific researches to enhance the advanced technological world”, which represents our belief of how the sustainability is essential in our approach to solve problems through technological innovation. A total of 56 papers were submitted and presented within the sessions of the conference. The papers’ topics revolve around Informatics Technology, Electrical Technology, Marine Technology, Manufacturing System and Technology, Mechanical Engineering, And also Information Industry and Management. In addition to the technical paper presentations, there were also five keynote speeches featured, and eight plenary talks were delivered. Two of the keynote speeches were delivered in person by Professor Selo from Universitas Gajah Mada, Indonesia, and Professor Goib Wiranto from the National Research and Innovation Agency, Indonesia. The rest of the keynote speeches were delivered online by Professor Yvon Kermarrec from IMT Atlantique, France; Professor Ian Gibson from University of Twente, Netherlands; and Dr. Ilham Akbar Habibie from The Association of Indonesian Engineer, Indonesia. It was a great pleasure to work with the technical program committee led by Mr. Hilfi Pardi, who have completed the imperative process of peer-review on the technical papers submitted in this conference. We are also very fortunate to have on our side the excellent organizing committee team of the Faculty of Engineering of UMRAH who work very hard to organize and support the conference. Finally, our appreciation to all the authors who have participated in this conference with their amazing achievements and enthusiasm. We firmly believe that ICSEDTI is a suitable platform for researchers, engineers, and developers who are concerned with sustainability in engineering and technological development. We hope in the coming years ICSEDTI will be better in terms of the organization of the conference, the quantity and the quality of the researches submitted, and most importantly the impact on the sustainability of technological innovation.