1. National Research Council Canada, Aerospace, Montreal H3T 2B2, Canada
2. IHI Corporation, Yokohama-shi, Kanagawa 235-8501, Japan
3. 4MAT, Université Libre de Bruxelles, 50 Avenue F.D. Roosevelt, 1050 Bruxelles, Belgium
4. McGill University, Department of Materials Engineering, Montreal H3A 0C5, Canada