Ismail Thamrin, Amrifan Saladin Mohruni, Irsyadi Yani, Riman Sipahutar and Zulkarnain Ali Leman 2024. Swarm Optimisation to Model the Surface Roughness of an AISI 4340 Turning using the Hot Machining Process. Journal of Advanced Research in Fluid Mechanics and Thermal Sciences. 117, 2 (May 2024), 147–156. DOI:https://doi.org/10.37934/arfmts.117.2.147156.