Enhanced Reliability Prediction Methodology for Impact Damaged Composite Structures
NORTHROP GRUMMAN CORP EL SEGUNDO CA MILITARY AIRCRAFT SYSTEMS DIV
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A through review of the existing impact test data and analysis methods was conducted and the results were used to identify a reliability prediction methodology for further development. The integrated residual strengthreliability method developed by Northrop Grumman under a NavyFederal Aviation Administration sponsored program was selected and modified. The modification was primarily in reducing the number of empirical constants required in the model. In addition, a cutoff energy level and a threshold energy level were also established analytically for the strength prediction. A structural damage tolerance evaluation was conducted using the modified model and the results compared to those obtained from the existing model.
- Laminates and Composite Materials