1. Oak Ridge National Laboratory, Materials Science and Technology Division, P.O. Box 2008, Oak Ridge, TN 37831, US
2. Dept. of Mechanical Engineering, University of California, Santa Barbara, Santa Barbara, CA 93106, US
3. ATI Consulting, P.O. Box 879, Black Mountain, NC 28711, US
4. Electric Power Research Institute, 3420 Hillview Ave., Palo Alto, CA 94304, US