Ahmad Atif Fikri Department of Mechanical Engineering, Faculty of Engineering, Universitas Negeri Malang, Semarang Street No. 5, Malang, East Java, Indonesia Indonesia
Maftuchin Romlie Department of Mechanical Engineering, Faculty of Engineering, Universitas Negeri Malang, Semarang Street No. 5, Malang, East Java, Indonesia Indonesia
Aminnudin Aminnudin Department of Mechanical Engineering, Faculty of Engineering, Universitas Negeri Malang, Semarang Street No. 5, Malang, East Java, Indonesia Indonesia