Assessment of Damage Tolerance Requirements and Analysis. Volume 3. Analytical Predictions and Correlations
Abstract
Structural test program of typical aircraft structural configuration was conducted to assess the current Air Force damage tolerance design requirements defined in MIL-A-83444. The specimens, made of 2024-T3XX and 7075-T6XX, were subjected to randomized flight-by-flight spectra, representative of fighter/trainer and bomber/cargo type loading spectra, respectively, and to constant amplitude loading spectrum. A total of seventy-two (72) specimens were tested. The test results were correlated with analytical predictions using crack growth and crack initiation methods. As a result of this study, recommendation is provided to the validity of MIL-A-83444, to develop guidelines for selection of critical crack locations, and to assess the state-of-the-art analytical capabilities in prediction crack growth and crack initiation time.
Document Details
- Document Type
- Technical Report
- Publication Date
- Mar 31, 1986
- Accession Number
- ADA170989
Entities
People
- Meir Levy