OPTIMAL PERIODIC INSPECTION INTERVAL OVER A FINITE TIME HORIZON FOR A TWO-COMPONENT SYSTEM WITH TWO TYPES OF FAILURES

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Moakedi H.; SEYEDHOSSEINI S.M.; SHAHANAGHI K.

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Paper Information

Journal: INDUSTRIAL ENGINEERING & MANAGEMENT SHARIF (SHARIF: ENGINEERING) Year:2020 | Volume:35-1 | Issue:2/1 Page(s): 19-29

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Title

OPTIMAL PERIODIC INSPECTION INTERVAL OVER A FINITE TIME HORIZON FOR A TWO-COMPONENT SYSTEM WITH TWO TYPES OF FAILURES

Author(s)

Moakedi H. | SEYEDHOSSEINI S.M. | SHAHANAGHI K. | Issue Writer Certificate

Keywords

Two-component system

optimal inspection interval

opportunistic inspection

hidden failures

twostage revealed failures

Abstract

In this paper, the optimal periodic inspection interval over a , nite time horizon for a Two-component system with two types of failures is determined. The failure type of the , rst component is hidden. The hidden failure is not self-announcing, i. e., it does not stop the system from working. Thus, it is detected only by inspection,however, any delay in the detection of hidden failures causes an increment in operating costs. The failure type of the second component is of two stages. In other words, the second component has three possible states: healthy, defective, and failed. The defective state is identi, ed just by inspection,however, the failed state is self-announcing, i. e., it reveals itself by stopping the system from working. Each defect and revealed failure of the second component causes a shock to the , rst component and increases its failure rate. Both components of the system are periodically inspected simultaneously to identify defects and hidden failures. Whenever the system stops working due to the revealed failures of the second component, the , rst component is also inspected opportunistically to detect the hidden failures. The , rst component is either minimally repaired or replaced upon inspection if the hidden failure is detected. The second component is also either minimally repaired or replaced upon inspection if found defective or at revealed failure. The total cost of the system includes the periodic and opportunistic inspection costs, downtime penalty costs due to hidden failures, and the minimal repair and replacement costs due to hidden failures, defects, and revealed failures. The goal is to , nd the optimal periodic inspection interval minimizing the expected total cost over a , nite time horizon. In the introduced approach, the inspection model is , rst developed mathematically. Then, due to the complexity of numerical computing, a simulation algorithm is designed to estimate the expected total cost of the system. Finally, the suggested approach is explained by a numerical example with sensitivity analysis for an electrical distribution system.

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APA: Copy

Moakedi, H., SEYEDHOSSEINI, S.M., & SHAHANAGHI, K.. (2020). OPTIMAL PERIODIC INSPECTION INTERVAL OVER A FINITE TIME HORIZON FOR A TWO-COMPONENT SYSTEM WITH TWO TYPES OF FAILURES. INDUSTRIAL ENGINEERING & MANAGEMENT SHARIF (SHARIF: ENGINEERING), 35-1(2/1 ), 19-29. SID. https://sid.ir/paper/992180/en

Vancouver: Copy

Moakedi H., SEYEDHOSSEINI S.M., SHAHANAGHI K.. OPTIMAL PERIODIC INSPECTION INTERVAL OVER A FINITE TIME HORIZON FOR A TWO-COMPONENT SYSTEM WITH TWO TYPES OF FAILURES. INDUSTRIAL ENGINEERING & MANAGEMENT SHARIF (SHARIF: ENGINEERING)[Internet]. 2020;35-1(2/1 ):19-29. Available from: https://sid.ir/paper/992180/en

IEEE: Copy

H. Moakedi, S.M. SEYEDHOSSEINI, and K. SHAHANAGHI, “OPTIMAL PERIODIC INSPECTION INTERVAL OVER A FINITE TIME HORIZON FOR A TWO-COMPONENT SYSTEM WITH TWO TYPES OF FAILURES,” INDUSTRIAL ENGINEERING & MANAGEMENT SHARIF (SHARIF: ENGINEERING), vol. 35-1, no. 2/1 , pp. 19–29, 2020, [Online]. Available: https://sid.ir/paper/992180/en

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