1. Department of Aerospace EngineeringUniversiti Putra Malaysia 43400 Serdang Selangor Malaysia
2. Aerospace Manufacturing Research Centre (AMRC)Universiti Putra Malaysia 43400 Serdang Selangor Malaysia
3. Institute of Tropical Forestry and Forest Products (INTROP)Universiti Putra Malaysia 43400 Serdang Selangor Malaysia
4. Department of Mechanical and Manufacturing EngineeringUniversiti Putra Malaysia 43400 Serdang Selangor Malaysia