Fatigue Life Prediction of Flaw-Tolerant Damaged Rotorcraft Structures
Abstract: Paper presented at the American Helicopter Society Annual Forum 74 in Phoenix, Arizona May 14-17, 2018: Fatigue Life Prediction of Flaw-Tolerant Damages Rotorcraft Structures. The presentation and paper report the work done by ESRD and NAVAIR under a SBIR program to develop an analytical approach to predicting the remaining useful fatigue life of metallic components with surface flaws.
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“In the case of the through crack configuration, the comparison of experimental and StressCheck® derived geometry factors showed a close correlation and were an improvement to solutions provided in AFGROW at the time. Based on the results of this research, StressCheck® pin-loaded lug geometry factors have since been incorporated into the AFGROW software.”
Dr. Alten GrandtPurdue University