United States Air Force
Structural Health Monitoring of Composite Wing
AlphaSTAR guided the fatigue testing of a composite wing for the US Air Force. Data from health
monitoring structural testing were correlated with analytical simulation under static loading.
Analysis was then used to guide the fatigue testing at extreme environmental condition.
Hybrid Structures for Improved Damage Tolerance of Unitized Structures
AlphaSTAR evaluated benefits in weight and fatigue life from the use of fiber metal laminate
material concepts in structural components of large transport aircraft. Current efforts are
underway in partnership with ALCOA, Northrop Grumman Corporation, and Southwest Research Institute
to demonstrate and validate the technology concept. Under prior phase, AlphaSTAR predicted in
a sealed envelope static and fatigue properties of notched and un-notched ASTM laminates made
from Glare and CentrAl materials. The analytical predictions were followed by physical testing
to validate the technical approach for durability and damage tolerance and life prediction.
|Bolt Bearing: Bearing Stress Vs. Displacement|
|Rooijen, R. G. J. V., Sinke, J., Vries, T. J. De, and Zwaag, S. V. D., (2006). The bearing strength of fiber metal laminates. Journal of Composite Materials, (40), pp. 5-19.|
|Mohit Garg, Michael Falugi, Frank Abdi, and Galib Abumeri, "Predicting Bearing Strength of Fiber Metal Laminates Via Progressive Failure Analysis", AIAA-SDM 2011 conference, Denver Colorado, -AIAA-SDM-945352.|