Abstract: Sustained-load crack-growth experiments were conducted under isothermal and nonisothermal conditions. Temperature cycling was conducted between 537° and 649°C. Hold times at minimum and/or ...

Abstract: Numerical results are presented for a cracked elastic half-space surface-loaded by Hertzian contact stresses. A horizontal subsurface crack and a surface breaking vertical crack are contained ...

Abstract: “The X–29 and HI–MAT use on–board computers to provide greater flexibility. Designers hope that someday these techniques will give man–made flying machines the agility of a dragonfly, which can ...