[1] Georgia Inst Technol, George W Woodruff Sch Mech Engn, 801 Ferst Dr, Atlanta, GA 30332 USA
[2] Georgia Inst Technol, Sch Math, 686 Cherry St NW, Atlanta, GA 30332 USA
[3] Boeing Co, 499 Boeing Blvd, Huntsville, AL 35824 USA
[4] Georgia Inst Technol, Sch Mat Sci & Engn, 771 Ferst Dr NW, Atlanta, GA 30332 USA