1. Department of Manufacturing Engineering; College of Technological Studies; P.A.A.E.T.; P.O. Box 42325 Shuwaikh 70654 Kuwait
2. Department of Mechanical Engineering; College of Engineering & Petroleum; Kuwait University; P.O. Box 5969 Safat 13060 Kuwait
3. Materials Research Group; Faculty of Engineering and the Environment; University of Southampton; Southampton SO17 1BJ UK