Tracking Filter Design for Predictive Maintenance of Jet Engine – Different Approaches and their Comparison

Kunz, Jan; Čala, Martin; Pikula, Stanislav; Beneš, Petr

doi:10.2478/scjme-2018-0049

Cited by 1 publication

(1 citation statement)

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“…Conditionbased maintenance reduces the cost of machine failures; however, it requires equipment to be installed on the system, which is commonly expensive and sometimes unaffordable. Predictive maintenance applies condition-based maintenance for fault prognosis and planning for replacing damaged subsystems, such as the methods presented in [9][10][11]. Predictive maintenance can minimize the time spent on maintenance, and it can also improve reliability.…”

Section: Introductionmentioning

confidence: 99%

Jet Engine Optimal Preventive Maintenance Scheduling Using Golden Section Search and Genetic Algorithm

Afshari¹,

Jonnadula²,

Xu³

et al. 2022

J Progn Health Mgt

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Jet engines are critical assets in aircraft, and their availability is crucial in the modern aircraft industry. Therefore, their maintenance scheduling is one of the major tasks an airline has to make during an engine’s lifetime. A proper engine maintenance schedule can significantly reduce maintenance costs without compromising the aircraft's reliability and safety. Different maintenance scheduling approaches have been used for jet engines, such as corrective, preventive, and predictive maintenance strategies. Regarding the safety demands in aircraft industries, preventive maintenance is a frequent maintenance method for jet engines. However, preventive maintenance schedules are often use fixed maintenance intervals, which is usually suboptimal. This paper focuses on minimizing a jet engine's overall maintenance cost by optimizing its preventive maintenance schedule based on an engine’s comprehensive reliability model. A hierarchical optimization framework including the golden section search and genetic algorithms is applied to find the optimal set of preventive maintenance number and their times and the components to be replaced at those times during the jet engine's overall lifetime. The Monte Carlo simulation is used to estimate the engine’s failure times using their lifetime distributions from the reliability model. The estimated failure times are then used to determine the engine's overall corrective and preventive maintenance costs during its lifetime. Finally, an optimal preventive maintenance schedule is proposed for an RB 211 jet engine using the presented method. In the end, comparing the proposed method's overall maintenance cost with two other maintenance methods demonstrates the proposed schedule's effectiveness. The method presented in this paper is generic, and it can be used for other similar engineering systems.

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Section: Introductionmentioning

confidence: 99%