1. Universitas Negeri Malang,Center of Advanced Materials and Renewable Energy,Mechanical and Industrial Department,Malang,Indonesia
2. Universitas Negeri Malang,Mechanical and Industrial Department,Malang,Indonesia
3. Universitas Muhammadiyah Surakarta,Mechanical Engineering Program
4. Universiti Teknikal Malaysia Melaka,Fakulti Teknologi Kejuruteraan Mekanikal dan Pembuatan,Melaka,Malaysia