کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
805789 905208 2011 7 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
A joint spare part and maintenance inspection optimisation model using the Delay-Time concept
موضوعات مرتبط
مهندسی و علوم پایه سایر رشته های مهندسی مهندسی مکانیک
پیش نمایش صفحه اول مقاله
A joint spare part and maintenance inspection optimisation model using the Delay-Time concept
چکیده انگلیسی

Spare parts and maintenance are closely related logistics activities where maintenance generates the need for spare parts. When preventive maintenance is present, it may need more spare parts at one time because of the planned preventive maintenance activities. This paper considers the joint optimisation of three decision variables, e.g., the ordering quantity, ordering interval and inspection interval. The model is constructed using the well-known Delay-Time concept where the failure process is divided into a two-stage process. The objective function is the long run expected cost per unit time in terms of the three decision variables to be optimised. Here we use a block-based inspection policy where all components are inspected at the same time regardless of the ages of the components. This creates a situation that the time to failure since the immediate previous inspection is random and has to be modelled by a distribution. This time is called the forward time and a limiting but closed form of such distribution is obtained. We develop an algorithm for the optimal solution of the decision process using a combination of analytical and enumeration approaches. The model is demonstrated by a numerical example.


► Joint optimisation of maintenance and spare part inventory.
► The use of the Delay-Time concept.
► Block-based inspection.
► Fixed order interval but variable order quantity.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Reliability Engineering & System Safety - Volume 96, Issue 11, November 2011, Pages 1535–1541
نویسندگان
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