1. Graduate Student, Univ. of Akron, 302 Buchtel Mall, Akron, OH 44325 (corresponding author).
2. Professor, Univ. of Akron, 302 Buchtel Mall, Akron, OH 44325.
3. Research Materials Engineer, NASA Glenn Research Center, 21000 Brookpark Rd., Cleveland OH 44135.
4. Aerospace Engineer, NASA Glenn Research Center, 21000 Brookpark Rd., Cleveland OH 44135.