Aji, A.A. et al. 2025. ANALYSIS OF THE EFFECT OF MACHINING VARIABLES ON SURFACE ROUGHNESS AND VIBRATION AMPLITUDE IN TURNING AISI 1045 STEEL USING THE TAGUCHI METHOD. PHENOMENON : Multidisciplinary Journal Of Sciences and Research. 3, 01 (Feb. 2025), 53–62. DOI:https://doi.org/10.62668/phenomenon.v3i1.1406.