1. Department of Mechanical Engineering, Faculty of Engineering, University of Malaya, Kuala Lumpur, Malaysia
2. Department of Mechanical Engineering, Politeknik Negeri Medan, Medan, Indonesia
3. Department of Mechanical Engineering, Faculty of Engineering, Universiti Tenaga Nasional, Kajang, Selangor, Malaysia
4. Department of Mechanical Engineering, Faculty of Engineering, Syiah Kuala University, Banda Aceh, Indonesia
5. Department of Mechanical Engineering, Faculty of Engineering, Universitas Janabadra, Yogyakarta, Indonesia