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- Title
Predicting Remaining Life by Fusing the Physics of Failure Modeling with Diagnostics.
- Authors
Kacprzynski, G. J.; Sarlashkar, A.; Roemer, M. J.; Hess, A.; Hardman, W.
- Abstract
Technology that enables failure prediction of critical machine components (prognostics) has the potential to significantly reduce maintenance costs and increase availability and safety. This article summarizes a research effort funded through the U.S. Defense Advanced Research Projects Agency and Naval Air System Command aimed at enhancing prognostic accuracy through more advanced physics-of-failure modeling and intelligent utilization of relevant diagnostic information. H-60 helicopter gear is used as a case study to introduce both stochastic sub-zone crack initiation and three-dimensional fracture mechanics lifting models along with adaptive model updating techniques for tuning key failure mode variables at a local material/damage site based on fused vibration features. The overall prognostic scheme is aimed at minimizing inherent modeling and operational uncertainties via sensed system measurements that evolve as damage progresses.
- Subjects
UNITED States; FAILURE analysis; STRUCTURAL failures; STRENGTH of materials; SYSTEM failures; HELICOPTERS; VIBRATION (Mechanics); AERONAUTICAL safety measures; UNITED States. Defense Advanced Research Projects Agency
- Publication
JOM: The Journal of The Minerals, Metals & Materials Society (TMS), 2004, Vol 56, Issue 3, p29
- ISSN
1047-4838
- Publication type
Article
- DOI
10.1007/s11837-004-0029-2