کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
806703 1468220 2016 9 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
A delay time model for a mission-based system subject to periodic and random inspection and postponed replacement
ترجمه فارسی عنوان
یک مدل زمان تاخیر برای یک سیستم مبتنی بر ماموریت برای بازرسی های دوره ای و تصادفی و جایگزینی معوق
کلمات کلیدی
مدلسازی نگهداری؛ زمان تاخیر؛ بازرسی دوره ای و تصادفی ؛ جایگزینی معوق؛ هزینه پیش بینی شده در واحد زمان
موضوعات مرتبط
مهندسی و علوم پایه سایر رشته های مهندسی مهندسی مکانیک
چکیده انگلیسی


• A delay time model of inspection is introduced for mission-based systems.
• Periodic and random inspections are performed to check the state.
• Replacement of the defective system at a random inspection can be postponed.

We propose an inspection and replacement policy for a single component system that successively executes missions with random durations. The failure process of the system can be divided into two states, namely, normal and defective, following the delay time concept. Inspections are carried out periodically and immediately after the completion of each mission (random inspections). The failed state is always identified immediately, whereas the defective state can only be revealed by an inspection. If the system fails or is defective at a periodic inspection, then replacement is immediate. If, however, the system is defective at a random inspection, then replacement will be postponed if the time to the subsequent periodic inspection is shorter than a pre-determined threshold, and immediate otherwise. We derive the long run expected cost per unit time and then investigate the optimal periodic inspection interval and postponement threshold. A numerical example is presented to demonstrate the applicability of the proposed maintenance policy.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Reliability Engineering & System Safety - Volume 150, June 2016, Pages 96–104
نویسندگان
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