TY - GEN
T1 - Fatigue life prediction using hybrid prognosis for structural health monitoring
AU - Neerukatti, Rajesh Kumar
AU - Liu, Kuang C.
AU - Liu, Yingtao
AU - Chattopadhyay, Aditi
PY - 2012
Y1 - 2012
N2 - A reliable prognostics framework is essential to address failure mode mitigation and life cycle cost of aerospace systems. Metallic aircraft components are subject to a variety of in-service loading conditions and prediction of fatigue life remains a critical challenge. A hybrid prognostic model, which can accurately predict the crack growth regime and the residual useful life estimate (RULE) of aluminum components, is developed to address this issue. This model uses an integrated technique; coupling physics based approach with a data-driven approach. Different types of loading such as constant amplitude, random and overload are considered and the developed methodology is validated with the experimental data available in the literature. The results indicate that fusing the measured data and physics based models improves the accuracy of prediction compared to a pure data-driven or physics based approach.
AB - A reliable prognostics framework is essential to address failure mode mitigation and life cycle cost of aerospace systems. Metallic aircraft components are subject to a variety of in-service loading conditions and prediction of fatigue life remains a critical challenge. A hybrid prognostic model, which can accurately predict the crack growth regime and the residual useful life estimate (RULE) of aluminum components, is developed to address this issue. This model uses an integrated technique; coupling physics based approach with a data-driven approach. Different types of loading such as constant amplitude, random and overload are considered and the developed methodology is validated with the experimental data available in the literature. The results indicate that fusing the measured data and physics based models improves the accuracy of prediction compared to a pure data-driven or physics based approach.
UR - http://www.scopus.com/inward/record.url?scp=84880775303&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=84880775303&partnerID=8YFLogxK
M3 - Conference contribution
AN - SCOPUS:84880775303
SN - 9781600869396
T3 - AIAA Infotech at Aerospace Conference and Exhibit 2012
BT - AIAA Infotech at Aerospace Conference and Exhibit 2012
T2 - AIAA Infotech at Aerospace Conference and Exhibit 2012
Y2 - 19 June 2012 through 21 June 2012
ER -