1. Materials Engineer, NASA Glenn Research Ctr., 21000 Brookpark Rd., Cleveland, OH 44135.
2. Aerospace Engineer, NASA Glenn Research Ctr., 21000 Brookpark Rd., Cleveland, OH 44135.
3. Professor of Civil Engineering, Univ. of Akron, Akron, OH 44325-3905.
4. Lead Design Engineer, General Electric Aircraft Engines, One Neumann Way, Cincinnati, OH 45215-6301.