JURUTERA MEKANIKAL Muhammad Arif Hairuddin JURUTERA MEKANIKAL 03-9145-5286 arif@ppukm.ukm.edu.my MOHD FATHI HILMI BIN MOHD RADZI JURUTERA MEKANIKAL 03-9145 5252 fathi.hilmi@ppukm.ukm.edu.my