TY - JOUR
T1 - An improved modified Weibull distribution applied to predict the reliability evolution of an aircraft lock mechanism
AU - Jiang, Deyin
AU - Han, Yajie
AU - Cui, Weimin
AU - Wan, Fangyi
AU - Yu, Tianxiang
AU - Song, Bifeng
N1 - Publisher Copyright:
© 2023 Elsevier Ltd
PY - 2023/4
Y1 - 2023/4
N2 - A new improved modified Weibull distribution (IMW), which consists of two tandem failure models is proposed in this paper. The order statistics, moment estimate and maximum likelihood estimate of the new distribution are investigated. The distribution is flexible for modeling the three phases of the modified bathtub-shaped hazard function. The modified distribution allows for enhanced statistical simulation. The new distribution is analyzed and applied to two sets of known lifetime data to demonstrate the advantages of the model. To verify the practical engineering applications of the model, reliability evolution test data for an aircraft door lock mechanism are analyzed and fitted. Based on the obtained trends of the lock hook angle and lock hook distance, we predict the evolutionary data for numerous mechanism samples, thus reducing the test cost. By considering the subdistribution and removing one parameter, the fitting effect is improved over that of the traditional distribution model.
AB - A new improved modified Weibull distribution (IMW), which consists of two tandem failure models is proposed in this paper. The order statistics, moment estimate and maximum likelihood estimate of the new distribution are investigated. The distribution is flexible for modeling the three phases of the modified bathtub-shaped hazard function. The modified distribution allows for enhanced statistical simulation. The new distribution is analyzed and applied to two sets of known lifetime data to demonstrate the advantages of the model. To verify the practical engineering applications of the model, reliability evolution test data for an aircraft door lock mechanism are analyzed and fitted. Based on the obtained trends of the lock hook angle and lock hook distance, we predict the evolutionary data for numerous mechanism samples, thus reducing the test cost. By considering the subdistribution and removing one parameter, the fitting effect is improved over that of the traditional distribution model.
KW - Aircraft lock mechanism
KW - Bathtub-shaped hazard function
KW - Lifetime distribution
KW - Reliability engineering
KW - Weibull distribution
UR - http://www.scopus.com/inward/record.url?scp=85151727899&partnerID=8YFLogxK
U2 - 10.1016/j.probengmech.2023.103449
DO - 10.1016/j.probengmech.2023.103449
M3 - 文章
AN - SCOPUS:85151727899
SN - 0266-8920
VL - 72
JO - Probabilistic Engineering Mechanics
JF - Probabilistic Engineering Mechanics
M1 - 103449
ER -