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…Generate additional fatigue curves correlated with damage growth.
Simulate X
flight hours
Defect
Growth?
Flaw Tolerant - Safe Life Methodology1
Yes
Record data
(S-N Curve)
No
Increase
Reference Stress
• Miner's Rule used to set inspection/retirement prior to
crack initiation from clearly detectable flaws (dents,
scratches, corrosion, etc.).
•…
https://www.wichita.edu/industry_and_defense/NIAR/Documents/JAMS2024-FAA-RBT.pdf