OPTIMIZATION OF MOLDING MATERIAL COMPOSITION FOR IMPROVED HARDNESS IN SAND-CAST ALUMINUM ALLOYS USING METAL CHIPS: TAGUCHI DESIGN APPROACH. JM [Internet]. 2026 Jun. 3 [cited 2026 Jul. 26];49(1):125-4. Available from: https://jurnalmekanikal.utm.my/index.php/jurnalmekanikal/article/view/698