Structural Integrity Analysis and Verification for Aircraft Structures. Volume 1:Characterization of 7O75-T7351 Aluminum; MODGRO Verification; MODGRO GUI Development

摘要

Crack growth rate tests were performed for 7O75-T7351 aluminum under standardlaboratory environment. These data served to establish the baseline material properties of the alloy. The Air Force crack growth life prediction software (MoDGRO) was used to predict the life of 7O75-T7351 aluminum specimens tested with cracks emanating from open and pin loaded fastener holes. The ability to use cyclic material property data under any environment was added to MODGRO. The effect of cold-working and interference fit fasteners was also examined. In addition, a user-friendly graphical user interface (GUI) was added to NODGRO and is documented in this report.