A Delay-Time Model with Imperfect Inspection for Aircraft Structure Subject to a Finite Time Horizon
According to the failure characteristic of aircraft structure, the delay-time model is an effective method to optimize maintenance activities of aircraft structure to decrease maintenance cost rate.In order to be consistent with the actual situation as much as possible, imperfect inspections, threshold and repeated intervals are been considered in the delaytime model.Whats more, the all exsiting delay-time models assume that the inspections are over an infinite time horizon that doesnt match the reality, so a delay-time model with imperfect inspection for aircraft structure subject to a finite time horizon is proposed to solve the above problem.In the proposed model, the nonhomogenous poisson process is studied and adopted to obtain the renewal probabilities due to defects or failures between the different two successive inspections, and an algorithm is applied based on the Nelder-Mead downhill simplex method to solve the model.Finally, a numerical example is illustrated as a case study, and the result proves the model validity and effectiveness.
delay-time model imperfect inspection aircraft structure optimal maintenance finite time
CAI Jing ZHU Lei
College of Civil Aviation,Nanjing University of Aeronautics and Astronautics,Nanjing,China 210016
国际会议
南京
英文
725-728
2011-09-15（万方平台首次上网日期，不代表论文的发表时间）