1. Department of Engineering Mechanics, Faculty of Mechanical and Manufacturing Engineering, Universiti Tun Hussein Onn Malaysia, 86400 Parit Raja, Batu Pahat, Johor, Malaysia
2. Universitas Muhammadiyah Surakarta, Surakarta 57162, Jawa Tengah, Indonesia
3. Universiti Pertahanan Nasional Indonesia, 57000 Kuala Lumpur, Malaysia