Yohanes, Yohanes, AND 		Efriyansyah, Muhammad.
" Influence of Flywheel for Drive System of Rotary Friction Welding and Chamfer Angle Variations Forging to Welding Strength" <em>Proceeding of Ocean, Mechanical and Aerospace -Science and Engineering-</em> [Online], Volume 5 Number 1 (19 October 2018)