1. Faculty of Mechanical Engineering; Universiti Teknologi Malaysia; 81310 UTM Skudai Johor Malaysia
2. Green Design and Manufacture Research Group; Center of Excellence Geopolymer and Green Technology (CEGeoGTech), School of Materials Engineering, Universiti Malaysia Perlis; 01000 Kangar Perlis Malaysia
3. School of Manufacturing Engineering; Universiti Malaysia Perlis; Kampus Tetap Pauh Putra, 02600 Arau Perlis Malaysia
4. Soft Computing Research Group; Faculty of Computing, Universiti Teknologi Malaysia; 81310 UTM Skudai Johor Malaysia