Firmansyah, Mohammad Hanif, and Iswanto. “Rotational Speed Variation Governs Impact Strength in HDPE Friction Stir Welding: Variasai Kecepatan Rotasi Mempengaruhi Kekuatan Dampak Pada Pengelasan Gesekan Putar HDPE”. Indonesian Journal of Innovation Studies 27, no. 2 (February 25, 2026): 10.21070/ijins.v27i2.2044. Accessed March 2, 2026. https://ijins.umsida.ac.id/index.php/ijins/article/view/2044.