Effects of Different Piston Materials and Head Design on the Thermal Performance of Four Stroke Spark Ignition Engine Piston. - ATAŞ, Hasancan; KARAÇOR, Berkay; ÖZCANLI, Mustafa (Afyon Kocatepe University Journal of Science & Engineering / Afyon Kocatepe Üniversitesi Fen Ve Mühendislik Bilimleri Dergisi, 2025)