Sinabutar J pranata, Yohanes. THE EFFECT OF FRICTION TIME VARIATIONS ON DISSIMILAR MATERIAL WELDING JOINTS AND HARDNESS VALUE USING A BAR-PLATE ROTARY FRICTION WELDING MACHINE. REM [Internet]. 2024 Mar. 31 [cited 2026 Jun. 8];7(01):36-42. Available from: https://journal.uir.ac.id/index.php/REM/article/view/15916