Recent Fracture Mechanics Results from NASA Research Related to the Aging Commercial Transport Fleet. (Reannouncement with New Availability Information).

摘要

NASA is conducting the Airframe Structural Integrity Program in support of the aging commercial transport fleet. This interdisciplinary program is being worked in cooperation with the U. S. airframe manufacturers, airline operators, and the FAA. Advanced analysis methods are under development to predict the fatigue crack growth in complex built-up shell structures. Innovative nondestructive examination technologies are also under development to provide large area inspection capability to detect corrosion, disbonds, and fatigue cracks. This paper reviews recent fracture mechanics results applicable to predicting the growth of cracks initiating at the rivets of fuselage splice joints.