![]() ![]() Detailed tabulation of the fracture toughness data and results of life prediction using the NASA/FLAGRO program are presented. The material used in this study was the Ti-6Al-4V alloy in the solution treated and aged (STA) and stress relieved condition. Room temperature lab air provided the test environment. Tests were conducted on various types of surface and corner cracks under tensile and bending loads. Comparisons are made of experimental values of toughness obtained using surface and corner cracked specimens with those obtained using standard test specimens, and also experimental growth cycles were compared with numerical predictions using the NASA/FLAGRO computer program. The behavior of part-through flaws with regard to failure under monotonic loading and their growth under fatigue loading was studied experimentally and analytically.
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