TY - JOUR
T1 - Risk evaluation in failure mode and effects analysis of aircraft turbine rotor blades using Dempster-Shafer evidence theory under uncertainty
AU - Yang, Jianping
AU - Huang, Hong Zhong
AU - He, Li Ping
AU - Zhu, Shun Peng
AU - Wen, Dunwei
N1 - Funding Information:
This research was partially supported by the Specialized Research Fund for the Doctoral Program of Higher Education of China under the Contract Number 20090185110019. The authors wish to express their thanks to Victor Ontiveros at University of Maryland for his help in writing this paper.
PY - 2011/12
Y1 - 2011/12
N2 - Rotor blades are the major components of an aircraft turbine. Their reliability seriously affects the overall aircraft turbine security. Failure mode and effects analysis (FMEA), especially, the risk priority order of failure modes, is essential in the design process. The risk priority number (RPN) has been extensively used to determine the risk priority order of failure modes. When multiple experts give different risk evaluations to one failure mode, which may be imprecise and uncertain, the traditional RPN is not a sufficient tool for risk evaluation. In this paper, the modified Dempster-Shafer (D-S) is adopted to aggregate the different evaluation information by considering multiple experts' evaluation opinions, failure modes and three risk factors respectively. A simplified discernment frame is proposed according to the practical application. Moreover, the mean value of the new RPN is used to determine the risk priority order of multiple failure modes. Finally, this method is used to deal with the risk priority evaluation of the failure modes of rotor blades of an aircraft turbine under multiple sources of different and uncertain evaluation information. The consequence of this method is rational and efficient.
AB - Rotor blades are the major components of an aircraft turbine. Their reliability seriously affects the overall aircraft turbine security. Failure mode and effects analysis (FMEA), especially, the risk priority order of failure modes, is essential in the design process. The risk priority number (RPN) has been extensively used to determine the risk priority order of failure modes. When multiple experts give different risk evaluations to one failure mode, which may be imprecise and uncertain, the traditional RPN is not a sufficient tool for risk evaluation. In this paper, the modified Dempster-Shafer (D-S) is adopted to aggregate the different evaluation information by considering multiple experts' evaluation opinions, failure modes and three risk factors respectively. A simplified discernment frame is proposed according to the practical application. Moreover, the mean value of the new RPN is used to determine the risk priority order of multiple failure modes. Finally, this method is used to deal with the risk priority evaluation of the failure modes of rotor blades of an aircraft turbine under multiple sources of different and uncertain evaluation information. The consequence of this method is rational and efficient.
KW - Aircraft turbine rotor blade
KW - D-S evidence theory
KW - Failure mode and effects analysis
KW - Risk priority number
UR - http://www.scopus.com/inward/record.url?scp=80054718859&partnerID=8YFLogxK
U2 - 10.1016/j.engfailanal.2011.06.014
DO - 10.1016/j.engfailanal.2011.06.014
M3 - Journal Article
AN - SCOPUS:80054718859
SN - 1350-6307
VL - 18
SP - 2084
EP - 2092
JO - Engineering Failure Analysis
JF - Engineering Failure Analysis
IS - 8
ER -